configure.ac
author Sam Lantinga <slouken@libsdl.org>
Mon, 13 Jan 2020 15:35:52 -0800
changeset 13411 26cf14ba2193
parent 13389 7bcf24416ca6
child 13526 2b708d63875d
permissions -rw-r--r--
Added support for claiming individiual interfaces on USB devices on Android
This is needed for supporting multiple wireless Xbox 360 controllers
     1 dnl Process this file with autoconf to produce a configure script.
     2 AC_INIT(README.txt)
     3 AC_CONFIG_HEADER(include/SDL_config.h)
     4 AC_CONFIG_AUX_DIR(build-scripts)
     5 AC_CONFIG_MACRO_DIR([acinclude])
     6 
     7 dnl Save the CFLAGS to see whether they were passed in or generated
     8 orig_CFLAGS="$CFLAGS"
     9 
    10 dnl Set various version strings - taken gratefully from the GTk sources
    11 #
    12 # Making releases:
    13 # Edit include/SDL_version.h and change the version, then:
    14 #   SDL_MICRO_VERSION += 1;
    15 #   SDL_INTERFACE_AGE += 1;
    16 #   SDL_BINARY_AGE += 1;
    17 # if any functions have been added, set SDL_INTERFACE_AGE to 0.
    18 # if backwards compatibility has been broken,
    19 # set SDL_BINARY_AGE and SDL_INTERFACE_AGE to 0.
    20 #
    21 SDL_MAJOR_VERSION=2
    22 SDL_MINOR_VERSION=0
    23 SDL_MICRO_VERSION=11
    24 SDL_INTERFACE_AGE=0
    25 SDL_BINARY_AGE=11
    26 SDL_VERSION=$SDL_MAJOR_VERSION.$SDL_MINOR_VERSION.$SDL_MICRO_VERSION
    27 
    28 AC_SUBST(SDL_MAJOR_VERSION)
    29 AC_SUBST(SDL_MINOR_VERSION)
    30 AC_SUBST(SDL_MICRO_VERSION)
    31 AC_SUBST(SDL_INTERFACE_AGE)
    32 AC_SUBST(SDL_BINARY_AGE)
    33 AC_SUBST(SDL_VERSION)
    34 
    35 # libtool versioning
    36 LT_INIT([win32-dll])
    37 
    38 LT_RELEASE=$SDL_MAJOR_VERSION.$SDL_MINOR_VERSION
    39 LT_CURRENT=`expr $SDL_MICRO_VERSION - $SDL_INTERFACE_AGE`
    40 LT_REVISION=$SDL_INTERFACE_AGE
    41 LT_AGE=`expr $SDL_BINARY_AGE - $SDL_INTERFACE_AGE`
    42 m4_pattern_allow([^LT_])
    43 
    44 AC_SUBST(LT_RELEASE)
    45 AC_SUBST(LT_CURRENT)
    46 AC_SUBST(LT_REVISION)
    47 AC_SUBST(LT_AGE)
    48 
    49 dnl Detect the canonical build and host environments
    50 dnl AC_CANONICAL_HOST
    51 
    52 dnl Check for tools
    53 AC_PROG_LIBTOOL
    54 AC_PROG_CC
    55 AC_PROG_CXX
    56 AC_PROG_INSTALL
    57 AC_PROG_MAKE_SET
    58 AC_CHECK_TOOL(WINDRES, [windres], [:])
    59 PKG_PROG_PKG_CONFIG
    60 
    61 dnl Make sure that srcdir is a full pathname
    62 case "$host" in
    63     *-*-mingw32*)
    64         # Except on msys, where make can't handle full pathnames (bug 1972)
    65         ;;
    66     *)
    67         srcdir=`cd $srcdir && pwd`
    68         ;;
    69 esac
    70 
    71 dnl Set up the compiler and linker flags
    72 INCLUDE="-I$srcdir/include -idirafter $srcdir/src/video/khronos"
    73 if test x$srcdir != x.; then
    74     INCLUDE="-Iinclude $INCLUDE"
    75 elif test -d .hg; then
    76     AC_MSG_ERROR([
    77 *** When building from Mercurial you should configure and build in a
    78     separate directory so you don't clobber SDL_config.h, SDL_revision.h
    79 ])
    80 fi
    81 BASE_CFLAGS=""
    82 BASE_LDFLAGS=""
    83 case "$host" in
    84     *-*-cygwin*)
    85         # We build SDL on cygwin without the UNIX emulation layer
    86         save_CFLAGS="$CFLAGS"
    87         have_no_cygwin=no
    88         AC_MSG_CHECKING(for GCC -mno-cygwin option)
    89         CFLAGS="$save_CFLAGS -mno-cygwin"
    90 
    91         AC_TRY_COMPILE([
    92         ],[
    93         ],[
    94         have_no_cygwin=yes
    95         ])
    96         AC_MSG_RESULT($have_no_cygwin)
    97         CFLAGS="$save_CFLAGS"
    98 
    99         if test x$have_no_cygwin = xyes; then
   100             BASE_CFLAGS="-mno-cygwin"
   101             BASE_LDFLAGS="-mno-cygwin"
   102         fi
   103         BASE_CFLAGS="$BASE_CFLAGS -I/usr/include/mingw"
   104         ;;
   105 esac
   106 # Uncomment the following line if you want to force SDL and applications
   107 # built with it to be compiled for a particular architecture.
   108 #AX_GCC_ARCHFLAG([no], [BASE_CFLAGS="$BASE_CFLAGS $ax_cv_gcc_archflag]")
   109 BUILD_CFLAGS="$CFLAGS $CPPFLAGS -DUSING_GENERATED_CONFIG_H"
   110 # The default optimization for SDL is -O3 (Bug #31)
   111 if test "x$orig_CFLAGS" = x; then
   112     BUILD_CFLAGS=`echo $BUILD_CFLAGS | sed 's/-O2/-O3/'`
   113 fi
   114 EXTRA_CFLAGS="$INCLUDE $BASE_CFLAGS"
   115 BUILD_LDFLAGS="$LDFLAGS"
   116 EXTRA_LDFLAGS="$BASE_LDFLAGS"
   117 ## These are common directories to find software packages
   118 #for path in /usr/freeware /usr/pkg /usr/X11R6 /usr/local; do
   119 #    if test -d $path/include; then
   120 #        EXTRA_CFLAGS="$EXTRA_CFLAGS -I$path/include"
   121 #    fi
   122 #    if test -d $path/lib; then
   123 #        EXTRA_LDFLAGS="$EXTRA_LDFLAGS -L$path/lib"
   124 #    fi
   125 #done
   126 SDL_CFLAGS="$BASE_CFLAGS"
   127 SDL_LIBS="-lSDL2"
   128 if test "x$BASE_LDFLAGS" != x; then
   129     SDL_LIBS="$SDL_LIBS $BASE_LDFLAGS"
   130 fi
   131 if test "x$EXTRA_CFLAGS" != x; then
   132     CPPFLAGS="$CPPFLAGS $EXTRA_CFLAGS"
   133     CFLAGS="$CFLAGS $EXTRA_CFLAGS"
   134 fi
   135 if test "x$EXTRA_LDFLAGS" != x; then
   136     LDFLAGS="$LDFLAGS $EXTRA_LDFLAGS"
   137 fi
   138 
   139 dnl set this to use on systems that use lib64 instead of lib
   140 base_libdir=`echo \${libdir} | sed 's/.*\/\(.*\)/\1/; q'`
   141 
   142 dnl Function to find a library in the compiler search path
   143 find_lib()
   144 {
   145     gcc_bin_path=[`$CC -print-search-dirs 2>/dev/null | fgrep programs: | sed 's/[^=]*=\(.*\)/\1/' | sed 's/:/ /g'`]
   146     gcc_lib_path=[`$CC -print-search-dirs 2>/dev/null | fgrep libraries: | sed 's/[^=]*=\(.*\)/\1/' | sed 's/:/ /g'`]
   147     env_lib_path=[`echo $LIBS $LDFLAGS $* | sed 's/-L[ ]*//g'`]
   148     if test "$cross_compiling" = yes; then
   149         host_lib_path=""
   150     else
   151         host_lib_path="/usr/$base_libdir /usr/local/$base_libdir"
   152     fi
   153     for path in $env_lib_path $gcc_bin_path $gcc_lib_path $host_lib_path; do
   154         lib=[`ls -- $path/$1 2>/dev/null | sed -e '/\.so\..*\./d' -e 's,.*/,,' | sort | tail -1`]
   155         if test x$lib != x; then
   156             echo $lib
   157             return
   158         fi
   159     done
   160     # Try again, this time allowing more than one version digit after the .so
   161     for path in $env_lib_path $gcc_bin_path $gcc_lib_path $host_lib_path; do
   162         lib=[`ls -- $path/$1 2>/dev/null | sed -e 's,.*/,,' | sort | tail -1`]
   163         if test x$lib != x; then
   164             echo $lib
   165             return
   166         fi
   167     done
   168 }
   169 
   170 dnl Check for compiler characteristics
   171 AC_C_CONST
   172 AC_C_INLINE
   173 AC_C_VOLATILE
   174 
   175 dnl See whether we want assertions for debugging/sanity checking SDL itself.
   176 AC_ARG_ENABLE(assertions,
   177 AS_HELP_STRING([--enable-assertions],
   178                [Enable internal sanity checks (auto/disabled/release/enabled/paranoid) [[default=auto]]]),
   179               , enable_assertions=auto)
   180 case "$enable_assertions" in
   181     auto) # Use optimization settings to determine assertion level
   182         ;;
   183     disabled)
   184         AC_DEFINE(SDL_DEFAULT_ASSERT_LEVEL, 0, [ ])
   185         ;;
   186     release)
   187         AC_DEFINE(SDL_DEFAULT_ASSERT_LEVEL, 1, [ ])
   188         ;;
   189     enabled)
   190         AC_DEFINE(SDL_DEFAULT_ASSERT_LEVEL, 2, [ ])
   191         ;;
   192     paranoid)
   193         AC_DEFINE(SDL_DEFAULT_ASSERT_LEVEL, 3, [ ])
   194         ;;
   195     *)
   196         AC_MSG_ERROR([*** unknown assertion level. stop.])
   197         ;;
   198 esac
   199 
   200 dnl See whether we can use gcc style dependency tracking
   201 AC_ARG_ENABLE(dependency-tracking,
   202 AS_HELP_STRING([--enable-dependency-tracking],
   203                [Use gcc -MMD -MT dependency tracking [[default=yes]]]),
   204               , enable_dependency_tracking=yes)
   205 if test x$enable_dependency_tracking = xyes; then
   206     have_gcc_mmd_mt=no
   207     AC_MSG_CHECKING(for GCC -MMD -MT option)
   208     AC_TRY_COMPILE([
   209     #if !defined(__GNUC__) || __GNUC__ < 3
   210     #error Dependency tracking requires GCC 3.0 or newer
   211     #endif
   212     ],[
   213     ],[
   214     have_gcc_mmd_mt=yes
   215     ])
   216     AC_MSG_RESULT($have_gcc_mmd_mt)
   217 
   218     if test x$have_gcc_mmd_mt = xyes; then
   219         DEPENDENCY_TRACKING_OPTIONS="-MMD -MT \$@"
   220     fi
   221 fi
   222 
   223 AC_MSG_CHECKING(for linker option --no-undefined)
   224 have_no_undefined=no
   225 case "$host" in
   226     dnl Skip this on platforms where it is just simply busted.
   227     *-*-openbsd*)
   228         ;;
   229 
   230     *)
   231         save_LDFLAGS="$LDFLAGS"
   232         LDFLAGS="$LDFLAGS -Wl,--no-undefined"
   233         AC_TRY_LINK([
   234         ],[
   235         ],[
   236         have_no_undefined=yes
   237         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,--no-undefined"
   238         ])
   239         LDFLAGS="$save_LDFLAGS"
   240         ;;
   241 esac
   242 AC_MSG_RESULT($have_no_undefined)
   243 
   244 AC_MSG_CHECKING(for linker option --dynamicbase)
   245 have_dynamicbase=no
   246 case "$host" in
   247     *)
   248         save_LDFLAGS="$LDFLAGS"
   249         LDFLAGS="$LDFLAGS -Wl,--dynamicbase"
   250         AC_TRY_LINK([
   251         ],[
   252         ],[
   253         have_dynamicbase=yes
   254         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,--dynamicbase"
   255         ])
   256         LDFLAGS="$save_LDFLAGS"
   257         ;;
   258 esac
   259 AC_MSG_RESULT($have_dynamicbase)
   260 
   261 AC_MSG_CHECKING(for linker option --nxcompat)
   262 have_nxcompat=no
   263 case "$host" in
   264     *)
   265         save_LDFLAGS="$LDFLAGS"
   266         LDFLAGS="$LDFLAGS -Wl,--nxcompat"
   267         AC_TRY_LINK([
   268         ],[
   269         ],[
   270         have_nxcompat=yes
   271         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,--nxcompat"
   272         ])
   273         LDFLAGS="$save_LDFLAGS"
   274         ;;
   275 esac
   276 AC_MSG_RESULT($have_nxcompat)
   277 
   278 AC_MSG_CHECKING(for linker option --high-entropy-va)
   279 have_high_entropy_va=no
   280 case "$host" in
   281     *)
   282         save_LDFLAGS="$LDFLAGS"
   283         LDFLAGS="$LDFLAGS -Wl,--high-entropy-va"
   284         AC_TRY_LINK([
   285         ],[
   286         ],[
   287         have_high_entropy_va=yes
   288         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,--high-entropy-va"
   289         ])
   290         LDFLAGS="$save_LDFLAGS"
   291         ;;
   292 esac
   293 AC_MSG_RESULT($have_high_entropy_va)
   294 
   295 dnl See whether we are allowed to use the system C library
   296 AC_ARG_ENABLE(libc,
   297 AS_HELP_STRING([--enable-libc], [Use the system C library [[default=yes]]]),
   298               , enable_libc=yes)
   299 if test x$enable_libc = xyes; then
   300     AC_DEFINE(HAVE_LIBC, 1, [ ])
   301 
   302     dnl Check for C library headers
   303     AC_HEADER_STDC
   304     AC_CHECK_HEADERS(sys/types.h stdio.h stdlib.h stddef.h stdarg.h malloc.h memory.h string.h strings.h wchar.h inttypes.h stdint.h limits.h ctype.h math.h float.h iconv.h signal.h)
   305 
   306     dnl Check for typedefs, structures, etc.
   307     AC_TYPE_SIZE_T
   308 
   309     dnl Check for defines
   310     AC_CHECK_DEFINE(M_PI, math.h)
   311 
   312     dnl Checks for library functions.
   313     case "$host" in
   314     *-*-cygwin* | *-*-mingw32*)
   315         ;;
   316     *)
   317         AC_FUNC_ALLOCA
   318         ;;
   319     esac
   320 
   321     AC_FUNC_MEMCMP
   322     if test x$ac_cv_func_memcmp_working = xyes; then
   323         AC_DEFINE(HAVE_MEMCMP, 1, [ ])
   324     fi
   325     AC_FUNC_STRTOD
   326     if test x$ac_cv_func_strtod = xyes; then
   327         AC_DEFINE(HAVE_STRTOD, 1, [ ])
   328     fi
   329     AC_CHECK_FUNC(mprotect,
   330         AC_TRY_COMPILE([
   331           #include <sys/types.h>
   332           #include <sys/mman.h>
   333         ],[
   334         ],[
   335         AC_DEFINE(HAVE_MPROTECT, 1, [ ])
   336         ]),
   337     )
   338     AC_CHECK_FUNCS(malloc calloc realloc free getenv setenv putenv unsetenv qsort abs bcopy memset memcpy memmove wcslen wcslcpy wcslcat wcsdup wcsstr wcscmp wcsncmp strlen strlcpy strlcat _strrev _strupr _strlwr strchr strrchr strstr strtok_r itoa _ltoa _uitoa _ultoa strtol strtoul _i64toa _ui64toa strtoll strtoull atoi atof strcmp strncmp _stricmp strcasecmp _strnicmp strncasecmp vsscanf vsnprintf fopen64 fseeko fseeko64 sigaction setjmp nanosleep sysconf sysctlbyname getauxval poll _Exit)
   339 
   340     AC_CHECK_LIB(m, pow, [LIBS="$LIBS -lm"; EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lm"])
   341     AC_CHECK_FUNCS(acos acosf asin asinf atan atanf atan2 atan2f ceil ceilf copysign copysignf cos cosf exp expf fabs fabsf floor floorf fmod fmodf log logf log10 log10f pow powf scalbn scalbnf sin sinf sqrt sqrtf tan tanf)
   342 
   343     AC_CHECK_LIB(iconv, iconv_open, [LIBS="$LIBS -liconv"; EXTRA_LDFLAGS="$EXTRA_LDFLAGS -liconv"])
   344     AC_CHECK_FUNCS(iconv)
   345 
   346     AC_CHECK_MEMBER(struct sigaction.sa_sigaction,[AC_DEFINE([HAVE_SA_SIGACTION], 1, [ ])], ,[#include <signal.h>])
   347 
   348     dnl Check for additional non-standard headers
   349     AC_CHECK_HEADERS(libunwind.h)
   350 fi
   351 
   352 dnl AC_CHECK_SIZEOF(void*)
   353 
   354 dnl See whether we can use gcc atomic operations on this architecture
   355 AC_ARG_ENABLE(gcc-atomics,
   356 AS_HELP_STRING([--enable-gcc-atomics],
   357                [Use gcc builtin atomics [[default=yes]]]),
   358               , enable_gcc_atomics=yes)
   359 if test x$enable_gcc_atomics = xyes; then
   360     have_gcc_atomics=no
   361     AC_MSG_CHECKING(for GCC builtin atomic operations)
   362     AC_TRY_LINK([
   363     ],[
   364     int a;
   365     void *x, *y, *z;
   366     __sync_lock_test_and_set(&a, 4);
   367     __sync_lock_test_and_set(&x, y);
   368     __sync_fetch_and_add(&a, 1);
   369     __sync_bool_compare_and_swap(&a, 5, 10);
   370     __sync_bool_compare_and_swap(&x, y, z);
   371     ],[
   372     have_gcc_atomics=yes
   373     ])
   374     AC_MSG_RESULT($have_gcc_atomics)
   375 
   376     if test x$have_gcc_atomics = xyes; then
   377         AC_DEFINE(HAVE_GCC_ATOMICS, 1, [ ])
   378     else
   379         # See if we have the minimum operation needed for GCC atomics
   380         AC_TRY_LINK([
   381         ],[
   382         int a;
   383         __sync_lock_test_and_set(&a, 1);
   384         __sync_lock_release(&a);
   385         ],[
   386         have_gcc_sync_lock_test_and_set=yes
   387         ])
   388         if test x$have_gcc_sync_lock_test_and_set = xyes; then
   389             AC_DEFINE(HAVE_GCC_SYNC_LOCK_TEST_AND_SET, 1, [ ])
   390         fi
   391     fi
   392 fi
   393 
   394 # Standard C sources
   395 SOURCES="$SOURCES $srcdir/src/*.c"
   396 SOURCES="$SOURCES $srcdir/src/atomic/*.c"
   397 SOURCES="$SOURCES $srcdir/src/audio/*.c"
   398 SOURCES="$SOURCES $srcdir/src/cpuinfo/*.c"
   399 SOURCES="$SOURCES $srcdir/src/dynapi/*.c"
   400 SOURCES="$SOURCES $srcdir/src/events/*.c"
   401 SOURCES="$SOURCES $srcdir/src/file/*.c"
   402 SOURCES="$SOURCES $srcdir/src/haptic/*.c"
   403 SOURCES="$SOURCES $srcdir/src/joystick/*.c"
   404 SOURCES="$SOURCES $srcdir/src/libm/*.c"
   405 SOURCES="$SOURCES $srcdir/src/power/*.c"
   406 #SOURCES="$SOURCES $srcdir/src/filesystem/*.c"
   407 SOURCES="$SOURCES $srcdir/src/render/*.c"
   408 SOURCES="$SOURCES $srcdir/src/render/*/*.c"
   409 SOURCES="$SOURCES $srcdir/src/sensor/*.c"
   410 SOURCES="$SOURCES $srcdir/src/stdlib/*.c"
   411 SOURCES="$SOURCES $srcdir/src/thread/*.c"
   412 SOURCES="$SOURCES $srcdir/src/timer/*.c"
   413 SOURCES="$SOURCES $srcdir/src/video/*.c"
   414 SOURCES="$SOURCES $srcdir/src/video/yuv2rgb/*.c"
   415 
   416 dnl Enable/disable various subsystems of the SDL library
   417 
   418 AC_ARG_ENABLE(atomic,
   419 AS_HELP_STRING([--enable-atomic], [Enable the atomic operations subsystem [[default=yes]]]),
   420               , enable_atomic=yes)
   421 if test x$enable_atomic != xyes; then
   422     AC_DEFINE(SDL_ATOMIC_DISABLED, 1, [ ])
   423 else
   424     SUMMARY_modules="${SUMMARY_modules} atomic"
   425 fi
   426 AC_ARG_ENABLE(audio,
   427 AS_HELP_STRING([--enable-audio], [Enable the audio subsystem [[default=yes]]]),
   428               , enable_audio=yes)
   429 if test x$enable_audio != xyes; then
   430     AC_DEFINE(SDL_AUDIO_DISABLED, 1, [ ])
   431 else
   432     SUMMARY_modules="${SUMMARY_modules} audio"
   433 fi
   434 AC_ARG_ENABLE(video,
   435 AS_HELP_STRING([--enable-video], [Enable the video subsystem [[default=yes]]]),
   436               , enable_video=yes)
   437 if test x$enable_video != xyes; then
   438     AC_DEFINE(SDL_VIDEO_DISABLED, 1, [ ])
   439 else
   440     SUMMARY_modules="${SUMMARY_modules} video"
   441 fi
   442 AC_ARG_ENABLE(render,
   443 AS_HELP_STRING([--enable-render], [Enable the render subsystem [[default=yes]]]),
   444               , enable_render=yes)
   445 if test x$enable_render != xyes; then
   446     AC_DEFINE(SDL_RENDER_DISABLED, 1, [ ])
   447 else
   448     SUMMARY_modules="${SUMMARY_modules} render"
   449 fi
   450 AC_ARG_ENABLE(events,
   451 AS_HELP_STRING([--enable-events], [Enable the events subsystem [[default=yes]]]),
   452               , enable_events=yes)
   453 if test x$enable_events != xyes; then
   454     AC_DEFINE(SDL_EVENTS_DISABLED, 1, [ ])
   455 else
   456     SUMMARY_modules="${SUMMARY_modules} events"
   457 fi
   458 AC_ARG_ENABLE(joystick,
   459 AS_HELP_STRING([--enable-joystick], [Enable the joystick subsystem [[default=yes]]]),
   460               , enable_joystick=yes)
   461 if test x$enable_joystick != xyes; then
   462     AC_DEFINE(SDL_JOYSTICK_DISABLED, 1, [ ])
   463 else
   464     SUMMARY_modules="${SUMMARY_modules} joystick"
   465 fi
   466 AC_ARG_ENABLE(haptic,
   467 AS_HELP_STRING([--enable-haptic], [Enable the haptic (force feedback) subsystem [[default=yes]]]),
   468               , enable_haptic=yes)
   469 if test x$enable_haptic != xyes; then
   470     AC_DEFINE(SDL_HAPTIC_DISABLED, 1, [ ])
   471 else
   472     SUMMARY_modules="${SUMMARY_modules} haptic"
   473 fi
   474 AC_ARG_ENABLE(sensor,
   475 AS_HELP_STRING([--enable-sensor], [Enable the sensor subsystem [[default=yes]]]),
   476               , enable_sensor=yes)
   477 if test x$enable_sensor != xyes; then
   478     AC_DEFINE(SDL_SENSOR_DISABLED, 1, [ ])
   479 else
   480     SUMMARY_modules="${SUMMARY_modules} sensor"
   481 fi
   482 AC_ARG_ENABLE(power,
   483 AS_HELP_STRING([--enable-power], [Enable the power subsystem [[default=yes]]]),
   484               , enable_power=yes)
   485 if test x$enable_power != xyes; then
   486     AC_DEFINE(SDL_POWER_DISABLED, 1, [ ])
   487 else
   488     SUMMARY_modules="${SUMMARY_modules} power"
   489 fi
   490 AC_ARG_ENABLE(filesystem,
   491 AS_HELP_STRING([--enable-filesystem], [Enable the filesystem subsystem [[default=yes]]]),
   492               , enable_filesystem=yes)
   493 if test x$enable_filesystem != xyes; then
   494     AC_DEFINE(SDL_FILESYSTEM_DISABLED, 1, [ ])
   495 else
   496     SUMMARY_modules="${SUMMARY_modules} filesystem"
   497 fi
   498 AC_ARG_ENABLE(threads,
   499 AS_HELP_STRING([--enable-threads], [Enable the threading subsystem [[default=yes]]]),
   500               , enable_threads=yes)
   501 if test x$enable_threads != xyes; then
   502     AC_DEFINE(SDL_THREADS_DISABLED, 1, [ ])
   503 else
   504     SUMMARY_modules="${SUMMARY_modules} threads"
   505 fi
   506 AC_ARG_ENABLE(timers,
   507 AS_HELP_STRING([--enable-timers], [Enable the timer subsystem [[default=yes]]]),
   508               , enable_timers=yes)
   509 if test x$enable_timers != xyes; then
   510     AC_DEFINE(SDL_TIMERS_DISABLED, 1, [ ])
   511 else
   512     SUMMARY_modules="${SUMMARY_modules} timers"
   513 fi
   514 AC_ARG_ENABLE(file,
   515 AS_HELP_STRING([--enable-file], [Enable the file subsystem [[default=yes]]]),
   516               , enable_file=yes)
   517 if test x$enable_file != xyes; then
   518     AC_DEFINE(SDL_FILE_DISABLED, 1, [ ])
   519 else
   520     SUMMARY_modules="${SUMMARY_modules} file"
   521 fi
   522 AC_ARG_ENABLE(loadso,
   523 AS_HELP_STRING([--enable-loadso], [Enable the shared object loading subsystem [[default=yes]]]),
   524               , enable_loadso=yes)
   525 if test x$enable_loadso != xyes; then
   526     AC_DEFINE(SDL_LOADSO_DISABLED, 1, [ ])
   527 else
   528     SUMMARY_modules="${SUMMARY_modules} loadso"
   529 fi
   530 AC_ARG_ENABLE(cpuinfo,
   531 AS_HELP_STRING([--enable-cpuinfo], [Enable the cpuinfo subsystem [[default=yes]]]),
   532               , enable_cpuinfo=yes)
   533 if test x$enable_cpuinfo != xyes; then
   534     AC_DEFINE(SDL_CPUINFO_DISABLED, 1, [ ])
   535 else
   536     SUMMARY_modules="${SUMMARY_modules} cpuinfo"
   537 fi
   538 AC_ARG_ENABLE(assembly,
   539 AS_HELP_STRING([--enable-assembly], [Enable assembly routines [[default=yes]]]),
   540               , enable_assembly=yes)
   541 if test x$enable_assembly = xyes; then
   542     SUMMARY_modules="${SUMMARY_modules} assembly"
   543 
   544     AC_DEFINE(SDL_ASSEMBLY_ROUTINES, 1, [ ])
   545 
   546     # Make sure that we don't generate floating point code that would
   547     # cause illegal instruction exceptions on older processors
   548     case "$host" in
   549         *-*-darwin*)
   550             # Don't need to worry about Apple hardware, it's all SSE capable
   551             default_ssemath=yes
   552             ;;
   553         *64-*-*)
   554             # x86 64-bit architectures all have SSE instructions
   555             default_ssemath=yes
   556             ;;
   557         *)
   558             default_ssemath=no
   559             ;;
   560     esac
   561     AC_ARG_ENABLE(ssemath,
   562 AS_HELP_STRING([--enable-ssemath], [Allow GCC to use SSE floating point math [[default=maybe]]]),
   563                   , enable_ssemath=$default_ssemath)
   564     if test x$enable_ssemath = xno; then
   565         if test x$have_gcc_sse = xyes -o x$have_gcc_sse2 = xyes -o x$have_gcc_sse3 = xyes; then
   566             EXTRA_CFLAGS="$EXTRA_CFLAGS -mfpmath=387"
   567         fi
   568     fi
   569 
   570     dnl Check for various instruction support
   571     AC_ARG_ENABLE(mmx,
   572 AS_HELP_STRING([--enable-mmx], [use MMX assembly routines [[default=yes]]]),
   573                   , enable_mmx=yes)
   574     if test x$enable_mmx = xyes; then
   575         save_CFLAGS="$CFLAGS"
   576         have_gcc_mmx=no
   577         AC_MSG_CHECKING(for GCC -mmmx option)
   578         mmx_CFLAGS="-mmmx"
   579         CFLAGS="$save_CFLAGS $mmx_CFLAGS"
   580 
   581         AC_TRY_COMPILE([
   582         #ifdef __MINGW32__
   583         #include <_mingw.h>
   584         #ifdef __MINGW64_VERSION_MAJOR
   585         #include <intrin.h>
   586         #else
   587         #include <mmintrin.h>
   588         #endif
   589         #else
   590         #include <mmintrin.h>
   591         #endif
   592         #ifndef __MMX__
   593         #error Assembler CPP flag not enabled
   594         #endif
   595         ],[
   596         ],[
   597         have_gcc_mmx=yes
   598         ])
   599         AC_MSG_RESULT($have_gcc_mmx)
   600         CFLAGS="$save_CFLAGS"
   601 
   602         if test x$have_gcc_mmx = xyes; then
   603             EXTRA_CFLAGS="$EXTRA_CFLAGS $mmx_CFLAGS"
   604             SUMMARY_math="${SUMMARY_math} mmx"
   605         fi
   606     fi
   607 
   608     AC_ARG_ENABLE(3dnow,
   609 AS_HELP_STRING([--enable-3dnow], [use 3DNow! assembly routines [[default=yes]]]),
   610                   , enable_3dnow=yes)
   611     if test x$enable_3dnow = xyes; then
   612         save_CFLAGS="$CFLAGS"
   613         have_gcc_3dnow=no
   614         AC_MSG_CHECKING(for GCC -m3dnow option)
   615         amd3dnow_CFLAGS="-m3dnow"
   616         CFLAGS="$save_CFLAGS $amd3dnow_CFLAGS"
   617 
   618         AC_TRY_LINK([
   619         #include <mm3dnow.h>
   620         #ifndef __3dNOW__
   621         #error Assembler CPP flag not enabled
   622         #endif
   623         ],[
   624         void *p = 0;
   625         _m_prefetch(p);
   626         ],[
   627         have_gcc_3dnow=yes
   628         ])
   629         AC_MSG_RESULT($have_gcc_3dnow)
   630         CFLAGS="$save_CFLAGS"
   631 
   632         if test x$have_gcc_3dnow = xyes; then
   633             EXTRA_CFLAGS="$EXTRA_CFLAGS $amd3dnow_CFLAGS"
   634             SUMMARY_math="${SUMMARY_math} 3dnow"
   635         fi
   636     fi
   637 
   638     AC_ARG_ENABLE(sse,
   639 AS_HELP_STRING([--enable-sse], [use SSE assembly routines [[default=yes]]]),
   640                   , enable_sse=yes)
   641     if test x$enable_sse = xyes; then
   642         save_CFLAGS="$CFLAGS"
   643         have_gcc_sse=no
   644         AC_MSG_CHECKING(for GCC -msse option)
   645         sse_CFLAGS="-msse"
   646         CFLAGS="$save_CFLAGS $sse_CFLAGS"
   647 
   648         AC_TRY_COMPILE([
   649         #ifdef __MINGW32__
   650         #include <_mingw.h>
   651         #ifdef __MINGW64_VERSION_MAJOR
   652         #include <intrin.h>
   653         #else
   654         #include <xmmintrin.h>
   655         #endif
   656         #else
   657         #include <xmmintrin.h>
   658         #endif
   659         #ifndef __SSE__
   660         #error Assembler CPP flag not enabled
   661         #endif
   662         ],[
   663         ],[
   664         have_gcc_sse=yes
   665         ])
   666         AC_MSG_RESULT($have_gcc_sse)
   667         CFLAGS="$save_CFLAGS"
   668 
   669         if test x$have_gcc_sse = xyes; then
   670             EXTRA_CFLAGS="$EXTRA_CFLAGS $sse_CFLAGS"
   671             SUMMARY_math="${SUMMARY_math} sse"
   672         fi
   673     fi
   674 
   675     AC_ARG_ENABLE(sse2,
   676 AS_HELP_STRING([--enable-sse2], [use SSE2 assembly routines [[default=maybe]]]),
   677                   , enable_sse2=$default_ssemath)
   678     if test x$enable_sse2 = xyes; then
   679         save_CFLAGS="$CFLAGS"
   680         have_gcc_sse2=no
   681         AC_MSG_CHECKING(for GCC -msse2 option)
   682         sse2_CFLAGS="-msse2"
   683         CFLAGS="$save_CFLAGS $sse2_CFLAGS"
   684 
   685         AC_TRY_COMPILE([
   686         #ifdef __MINGW32__
   687         #include <_mingw.h>
   688         #ifdef __MINGW64_VERSION_MAJOR
   689         #include <intrin.h>
   690         #else
   691         #include <emmintrin.h>
   692         #endif
   693         #else
   694         #include <emmintrin.h>
   695         #endif
   696         #ifndef __SSE2__
   697         #error Assembler CPP flag not enabled
   698         #endif
   699         ],[
   700         ],[
   701         have_gcc_sse2=yes
   702         ])
   703         AC_MSG_RESULT($have_gcc_sse2)
   704         CFLAGS="$save_CFLAGS"
   705 
   706         if test x$have_gcc_sse2 = xyes; then
   707             EXTRA_CFLAGS="$EXTRA_CFLAGS $sse2_CFLAGS"
   708             SUMMARY_math="${SUMMARY_math} sse2"
   709         fi
   710     fi
   711 
   712     AC_ARG_ENABLE(sse3,
   713 AS_HELP_STRING([--enable-sse3], [use SSE3 assembly routines [[default=maybe]]]),
   714                   , enable_sse3=$default_ssemath)
   715     if test x$enable_sse3 = xyes; then
   716         save_CFLAGS="$CFLAGS"
   717         have_gcc_sse3=no
   718         AC_MSG_CHECKING(for GCC -msse3 option)
   719         sse3_CFLAGS="-msse3"
   720         CFLAGS="$save_CFLAGS $sse3_CFLAGS"
   721 
   722         AC_TRY_COMPILE([
   723         #ifdef __MINGW32__
   724         #include <_mingw.h>
   725         #ifdef __MINGW64_VERSION_MAJOR
   726         #include <intrin.h>
   727         #else
   728         #include <pmmintrin.h>
   729         #endif
   730         #else
   731         #include <pmmintrin.h>
   732         #endif
   733         #ifndef __SSE2__
   734         #error Assembler CPP flag not enabled
   735         #endif
   736         ],[
   737         ],[
   738         have_gcc_sse3=yes
   739         ])
   740         AC_MSG_RESULT($have_gcc_sse3)
   741         CFLAGS="$save_CFLAGS"
   742 
   743         if test x$have_gcc_sse3 = xyes; then
   744             EXTRA_CFLAGS="$EXTRA_CFLAGS $sse3_CFLAGS"
   745             SUMMARY_math="${SUMMARY_math} sse3"
   746         fi
   747     fi
   748 
   749     AC_CHECK_HEADER(immintrin.h,
   750                     have_immintrin_h_hdr=yes,
   751                     have_immintrin_h_hdr=no)
   752     if test x$have_immintrin_h_hdr = xyes; then
   753         AC_DEFINE(HAVE_IMMINTRIN_H, 1, [ ])
   754     fi
   755 
   756     AC_ARG_ENABLE(altivec,
   757 AS_HELP_STRING([--enable-altivec], [use Altivec assembly routines [[default=yes]]]),
   758                   , enable_altivec=yes)
   759     if test x$enable_altivec = xyes; then
   760         save_CFLAGS="$CFLAGS"
   761         have_gcc_altivec=no
   762         have_altivec_h_hdr=no
   763         altivec_CFLAGS="-maltivec"
   764         CFLAGS="$save_CFLAGS $altivec_CFLAGS"
   765 
   766         AC_MSG_CHECKING(for Altivec with GCC altivec.h and -maltivec option)
   767         AC_TRY_COMPILE([
   768         #include <altivec.h>
   769         vector unsigned int vzero() {
   770             return vec_splat_u32(0);
   771         }
   772         ],[
   773         ],[
   774         have_gcc_altivec=yes
   775         have_altivec_h_hdr=yes
   776         ])
   777         AC_MSG_RESULT($have_gcc_altivec)
   778 
   779         if test x$have_gcc_altivec = xno; then
   780             AC_MSG_CHECKING(for Altivec with GCC -maltivec option)
   781             AC_TRY_COMPILE([
   782             vector unsigned int vzero() {
   783                 return vec_splat_u32(0);
   784             }
   785             ],[
   786             ],[
   787             have_gcc_altivec=yes
   788             ])
   789             AC_MSG_RESULT($have_gcc_altivec)
   790         fi
   791 
   792         if test x$have_gcc_altivec = xno; then
   793             AC_MSG_CHECKING(for Altivec with GCC altivec.h and -faltivec option)
   794             altivec_CFLAGS="-faltivec"
   795             CFLAGS="$save_CFLAGS $altivec_CFLAGS"
   796             AC_TRY_COMPILE([
   797             #include <altivec.h>
   798             vector unsigned int vzero() {
   799                 return vec_splat_u32(0);
   800             }
   801             ],[
   802             ],[
   803             have_gcc_altivec=yes
   804             have_altivec_h_hdr=yes
   805             ])
   806             AC_MSG_RESULT($have_gcc_altivec)
   807         fi
   808 
   809         if test x$have_gcc_altivec = xno; then
   810             AC_MSG_CHECKING(for Altivec with GCC -faltivec option)
   811             AC_TRY_COMPILE([
   812             vector unsigned int vzero() {
   813                 return vec_splat_u32(0);
   814             }
   815             ],[
   816             ],[
   817             have_gcc_altivec=yes
   818             ])
   819             AC_MSG_RESULT($have_gcc_altivec)
   820         fi
   821         CFLAGS="$save_CFLAGS"
   822 
   823         if test x$have_gcc_altivec = xyes; then
   824             AC_DEFINE(SDL_ALTIVEC_BLITTERS, 1, [ ])
   825             if test x$have_altivec_h_hdr = xyes; then
   826               AC_DEFINE(HAVE_ALTIVEC_H, 1, [ ])
   827             fi
   828             EXTRA_CFLAGS="$EXTRA_CFLAGS $altivec_CFLAGS"
   829             SUMMARY_math="${SUMMARY_math} altivec"
   830         fi
   831     fi
   832 fi
   833 
   834 dnl See if the OSS audio interface is supported
   835 CheckOSS()
   836 {
   837     AC_ARG_ENABLE(oss,
   838 AS_HELP_STRING([--enable-oss], [support the OSS audio API [[default=maybe]]]),
   839                   , enable_oss=maybe)
   840 
   841     # OpenBSD "has" OSS, but it's not really for app use. They want you to
   842     #  use sndio instead. So on there, we default to disabled. You can force
   843     #  it on if you really want, though.
   844     if test x$enable_oss = xmaybe; then
   845         enable_oss=yes
   846         case "$host" in
   847             *-*-openbsd*)
   848                 enable_oss=no;;
   849         esac
   850     fi
   851 
   852     if test x$enable_audio = xyes -a x$enable_oss = xyes; then
   853         AC_MSG_CHECKING(for OSS audio support)
   854         have_oss=no
   855         if test x$have_oss != xyes; then
   856             AC_TRY_COMPILE([
   857               #include <sys/soundcard.h>
   858             ],[
   859               int arg = SNDCTL_DSP_SETFRAGMENT;
   860             ],[
   861             have_oss=yes
   862             ])
   863         fi
   864         if test x$have_oss != xyes; then
   865             AC_TRY_COMPILE([
   866               #include <soundcard.h>
   867             ],[
   868               int arg = SNDCTL_DSP_SETFRAGMENT;
   869             ],[
   870             have_oss=yes
   871             AC_DEFINE(SDL_AUDIO_DRIVER_OSS_SOUNDCARD_H, 1, [ ])
   872             ])
   873         fi
   874         AC_MSG_RESULT($have_oss)
   875         if test x$have_oss = xyes; then
   876             SUMMARY_audio="${SUMMARY_audio} oss"
   877             AC_DEFINE(SDL_AUDIO_DRIVER_OSS, 1, [ ])
   878             SOURCES="$SOURCES $srcdir/src/audio/dsp/*.c"
   879             have_audio=yes
   880 
   881             # We may need to link with ossaudio emulation library
   882             case "$host" in
   883                 *-*-openbsd*|*-*-netbsd*)
   884                     EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lossaudio";;
   885             esac
   886         fi
   887     fi
   888 }
   889 
   890 dnl See if the ALSA audio interface is supported
   891 CheckALSA()
   892 {
   893     AC_ARG_ENABLE(alsa,
   894 AS_HELP_STRING([--enable-alsa], [support the ALSA audio API [[default=yes]]]),
   895                   , enable_alsa=yes)
   896     if test x$enable_audio = xyes -a x$enable_alsa = xyes; then
   897         AM_PATH_ALSA(1.0.11, have_alsa=yes, have_alsa=no)
   898         # Restore all flags from before the ALSA detection runs
   899         CFLAGS="$alsa_save_CFLAGS"
   900         LDFLAGS="$alsa_save_LDFLAGS"
   901         LIBS="$alsa_save_LIBS"
   902         if test x$have_alsa = xyes; then
   903             AC_ARG_ENABLE(alsa-shared,
   904 AS_HELP_STRING([--enable-alsa-shared], [dynamically load ALSA audio support [[default=yes]]]),
   905                           , enable_alsa_shared=yes)
   906             alsa_lib=[`find_lib "libasound.so.*" "$ALSA_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
   907 
   908             AC_DEFINE(SDL_AUDIO_DRIVER_ALSA, 1, [ ])
   909             SOURCES="$SOURCES $srcdir/src/audio/alsa/*.c"
   910             EXTRA_CFLAGS="$EXTRA_CFLAGS $ALSA_CFLAGS"
   911             if test x$have_loadso != xyes && \
   912                test x$enable_alsa_shared = xyes; then
   913                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic ALSA loading])
   914             fi
   915             if test x$have_loadso = xyes && \
   916                test x$enable_alsa_shared = xyes && test x$alsa_lib != x; then
   917                 echo "-- dynamic libasound -> $alsa_lib"
   918                 AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_ALSA_DYNAMIC, "$alsa_lib", [ ])
   919                 SUMMARY_audio="${SUMMARY_audio} alsa(dynamic)"
   920             else
   921                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $ALSA_LIBS"
   922                 SUMMARY_audio="${SUMMARY_audio} alsa"
   923             fi
   924             have_audio=yes
   925         fi
   926     fi
   927 }
   928 
   929 dnl Find JACK Audio
   930 CheckJACK()
   931 {
   932     AC_ARG_ENABLE(jack,
   933 AS_HELP_STRING([--enable-jack], [use JACK audio [[default=yes]]]),
   934                   , enable_jack=yes)
   935     if test x$enable_audio = xyes -a x$enable_jack = xyes; then
   936         PKG_CHECK_MODULES([JACK], [jack >= 0.125], audio_jack=yes, audio_jack=no)
   937 
   938         if test x$audio_jack = xyes; then
   939             AC_ARG_ENABLE(jack-shared,
   940 AS_HELP_STRING([--enable-jack-shared], [dynamically load JACK audio support [[default=yes]]]),
   941                           , enable_jack_shared=yes)
   942             jack_lib=[`find_lib "libjack.so.*" "$JACK_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
   943 
   944             AC_DEFINE(SDL_AUDIO_DRIVER_JACK, 1, [ ])
   945             SOURCES="$SOURCES $srcdir/src/audio/jack/*.c"
   946             EXTRA_CFLAGS="$EXTRA_CFLAGS $JACK_CFLAGS"
   947             if test x$have_loadso != xyes && \
   948                test x$enable_jack_shared = xyes; then
   949                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic JACK audio loading])
   950             fi
   951             if test x$have_loadso = xyes && \
   952                test x$enable_jack_shared = xyes && test x$jack_lib != x; then
   953                 echo "-- dynamic libjack -> $jack_lib"
   954                 AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_JACK_DYNAMIC, "$jack_lib", [ ])
   955                 SUMMARY_audio="${SUMMARY_audio} jack(dynamic)"
   956 
   957                 case "$host" in
   958                     # On Solaris, jack must be linked deferred explicitly
   959                     # to prevent undefined symbol failures.
   960                     *-*-solaris*)
   961                         JACK_LIBS=`echo $JACK_LIBS | sed 's/\-l/-Wl,-l/g'`
   962                         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-zdeferred $JACK_LIBS -Wl,-znodeferred"
   963                 esac
   964             else
   965                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $JACK_LIBS"
   966                 SUMMARY_audio="${SUMMARY_audio} jack"
   967             fi
   968             have_audio=yes
   969         fi
   970     fi
   971 }
   972 
   973 dnl Find the ESD includes and libraries
   974 CheckESD()
   975 {
   976     AC_ARG_ENABLE(esd,
   977 AS_HELP_STRING([--enable-esd], [support the Enlightened Sound Daemon [[default=yes]]]),
   978                   , enable_esd=yes)
   979     if test x$enable_audio = xyes -a x$enable_esd = xyes; then
   980         AM_PATH_ESD(0.2.8, have_esd=yes, have_esd=no)
   981         if test x$have_esd = xyes; then
   982             AC_ARG_ENABLE(esd-shared,
   983 AS_HELP_STRING([--enable-esd-shared], [dynamically load ESD audio support [[default=yes]]]),
   984                           , enable_esd_shared=yes)
   985             esd_lib=[`find_lib "libesd.so.*" "$ESD_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
   986 
   987             AC_DEFINE(SDL_AUDIO_DRIVER_ESD, 1, [ ])
   988             SOURCES="$SOURCES $srcdir/src/audio/esd/*.c"
   989             EXTRA_CFLAGS="$EXTRA_CFLAGS $ESD_CFLAGS"
   990             if test x$have_loadso != xyes && \
   991                test x$enable_esd_shared = xyes; then
   992                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic ESD loading])
   993             fi
   994             if test x$have_loadso = xyes && \
   995                test x$enable_esd_shared = xyes && test x$esd_lib != x; then
   996                 echo "-- dynamic libesd -> $esd_lib"
   997                 AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_ESD_DYNAMIC, "$esd_lib", [ ])
   998                 SUMMARY_audio="${SUMMARY_audio} esd(dynamic)"
   999             else
  1000                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $ESD_LIBS"
  1001                 SUMMARY_audio="${SUMMARY_audio} esd"
  1002             fi
  1003             have_audio=yes
  1004         fi
  1005     fi
  1006 }
  1007 
  1008 dnl Find PulseAudio
  1009 CheckPulseAudio()
  1010 {
  1011     AC_ARG_ENABLE(pulseaudio,
  1012 AS_HELP_STRING([--enable-pulseaudio], [use PulseAudio [[default=yes]]]),
  1013                   , enable_pulseaudio=yes)
  1014     if test x$enable_audio = xyes -a x$enable_pulseaudio = xyes; then
  1015         PKG_CHECK_MODULES([PULSEAUDIO], [libpulse-simple >= 0.9], audio_pulseaudio=yes, audio_pulseaudio=no)
  1016 
  1017         if test x$audio_pulseaudio = xyes; then
  1018             AC_ARG_ENABLE(pulseaudio-shared,
  1019 AS_HELP_STRING([--enable-pulseaudio-shared], [dynamically load PulseAudio support [[default=yes]]]),
  1020                           , enable_pulseaudio_shared=yes)
  1021             pulseaudio_lib=[`find_lib "libpulse-simple.so.*" "$PULSEAUDIO_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1022 
  1023             AC_DEFINE(SDL_AUDIO_DRIVER_PULSEAUDIO, 1, [ ])
  1024             SOURCES="$SOURCES $srcdir/src/audio/pulseaudio/*.c"
  1025             EXTRA_CFLAGS="$EXTRA_CFLAGS $PULSEAUDIO_CFLAGS"
  1026             if test x$have_loadso != xyes && \
  1027                test x$enable_pulseaudio_shared = xyes; then
  1028                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic PulseAudio loading])
  1029             fi
  1030             if test x$have_loadso = xyes && \
  1031                test x$enable_pulseaudio_shared = xyes && test x$pulseaudio_lib != x; then
  1032                 echo "-- dynamic libpulse-simple -> $pulseaudio_lib"
  1033                 AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_PULSEAUDIO_DYNAMIC, "$pulseaudio_lib", [ ])
  1034                 SUMMARY_audio="${SUMMARY_audio} pulse(dynamic)"
  1035 
  1036                 case "$host" in
  1037                     # On Solaris, pulseaudio must be linked deferred explicitly
  1038                     # to prevent undefined symbol failures.
  1039                     *-*-solaris*)
  1040                         PULSEAUDIO_LIBS=`echo $PULSEAUDIO_LIBS | sed 's/\-l/-Wl,-l/g'`
  1041                         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-zdeferred $PULSEAUDIO_LIBS -Wl,-znodeferred"
  1042                 esac
  1043             else
  1044                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $PULSEAUDIO_LIBS"
  1045                 SUMMARY_audio="${SUMMARY_audio} pulse"
  1046             fi
  1047             have_audio=yes
  1048         fi
  1049     fi
  1050 }
  1051 
  1052 CheckARTSC()
  1053 {
  1054     AC_ARG_ENABLE(arts,
  1055 AS_HELP_STRING([--enable-arts], [support the Analog Real Time Synthesizer [[default=yes]]]),
  1056                   , enable_arts=yes)
  1057     if test x$enable_audio = xyes -a x$enable_arts = xyes; then
  1058         AC_PATH_PROG(ARTSCONFIG, artsc-config)
  1059         if test x$ARTSCONFIG = x -o x$ARTSCONFIG = x'"$ARTSCONFIG"'; then
  1060             : # arts isn't installed
  1061         else
  1062             ARTS_CFLAGS=`$ARTSCONFIG --cflags`
  1063             ARTS_LIBS=`$ARTSCONFIG --libs`
  1064             AC_MSG_CHECKING(for aRts development environment)
  1065             audio_arts=no
  1066             save_CFLAGS="$CFLAGS"
  1067             CFLAGS="$CFLAGS $ARTS_CFLAGS"
  1068             AC_TRY_COMPILE([
  1069              #include <artsc.h>
  1070             ],[
  1071              arts_stream_t stream;
  1072             ],[
  1073             audio_arts=yes
  1074             ])
  1075             CFLAGS="$save_CFLAGS"
  1076             AC_MSG_RESULT($audio_arts)
  1077             if test x$audio_arts = xyes; then
  1078                 AC_ARG_ENABLE(arts-shared,
  1079 AS_HELP_STRING([--enable-arts-shared], [dynamically load aRts audio support [[default=yes]]]),
  1080                               , enable_arts_shared=yes)
  1081                 arts_lib=[`find_lib "libartsc.so.*" "$ARTS_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1082 
  1083                 AC_DEFINE(SDL_AUDIO_DRIVER_ARTS, 1, [ ])
  1084                 SOURCES="$SOURCES $srcdir/src/audio/arts/*.c"
  1085                 EXTRA_CFLAGS="$EXTRA_CFLAGS $ARTS_CFLAGS"
  1086                 if test x$have_loadso != xyes && \
  1087                    test x$enable_arts_shared = xyes; then
  1088                     AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic ARTS loading])
  1089                 fi
  1090                 if test x$have_loadso = xyes && \
  1091                    test x$enable_arts_shared = xyes && test x$arts_lib != x; then
  1092                     echo "-- dynamic libartsc -> $arts_lib"
  1093                     AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_ARTS_DYNAMIC, "$arts_lib", [ ])
  1094                     SUMMARY_audio="${SUMMARY_audio} arts(dynamic)"
  1095                 else
  1096                     EXTRA_LDFLAGS="$EXTRA_LDFLAGS $ARTS_LIBS"
  1097                     SUMMARY_audio="${SUMMARY_audio} arts"
  1098                 fi
  1099                 have_audio=yes
  1100             fi
  1101         fi
  1102     fi
  1103 }
  1104 
  1105 dnl See if the NAS audio interface is supported
  1106 CheckNAS()
  1107 {
  1108     AC_ARG_ENABLE(nas,
  1109 AS_HELP_STRING([--enable-nas], [support the NAS audio API [[default=yes]]]),
  1110                   , enable_nas=yes)
  1111     if test x$enable_audio = xyes -a x$enable_nas = xyes; then
  1112         AC_CHECK_HEADER(audio/audiolib.h, have_nas_hdr=yes)
  1113         AC_CHECK_LIB(audio, AuOpenServer, have_nas_lib=yes)
  1114 
  1115         AC_MSG_CHECKING(for NAS audio support)
  1116         have_nas=no
  1117 
  1118         if test x$have_nas_hdr = xyes -a x$have_nas_lib = xyes; then
  1119             have_nas=yes
  1120             NAS_LIBS="-laudio"
  1121 
  1122         elif test -r /usr/X11R6/include/audio/audiolib.h; then
  1123             have_nas=yes
  1124             NAS_CFLAGS="-I/usr/X11R6/include/"
  1125             NAS_LIBS="-L/usr/X11R6/lib -laudio -lXt"
  1126 
  1127         fi
  1128 
  1129         AC_MSG_RESULT($have_nas)
  1130 
  1131         if test x$have_nas = xyes; then
  1132             AC_ARG_ENABLE(nas-shared,
  1133 AS_HELP_STRING([--enable-nas-shared], [dynamically load NAS audio support [[default=yes]]]),
  1134                           , enable_nas_shared=yes)
  1135             nas_lib=[`find_lib "libaudio.so.*" "$NAS_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1136 
  1137             if test x$have_loadso != xyes && \
  1138                test x$enable_nas_shared = xyes; then
  1139                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic NAS loading])
  1140             fi
  1141             if test x$have_loadso = xyes && \
  1142                test x$enable_nas_shared = xyes && test x$nas_lib != x; then
  1143                 echo "-- dynamic libaudio -> $nas_lib"
  1144                 AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_NAS_DYNAMIC, "$nas_lib", [ ])
  1145                 SUMMARY_audio="${SUMMARY_audio} nas(dynamic)"
  1146             else
  1147                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $NAS_LIBS"
  1148                 SUMMARY_audio="${SUMMARY_audio} nas"
  1149             fi
  1150 
  1151             AC_DEFINE(SDL_AUDIO_DRIVER_NAS, 1, [ ])
  1152             SOURCES="$SOURCES $srcdir/src/audio/nas/*.c"
  1153             EXTRA_CFLAGS="$EXTRA_CFLAGS $NAS_CFLAGS"
  1154             have_audio=yes
  1155         fi
  1156     fi
  1157 }
  1158 
  1159 dnl See if the sndio audio interface is supported
  1160 CheckSNDIO()
  1161 {
  1162     AC_ARG_ENABLE(sndio,
  1163 AS_HELP_STRING([--enable-sndio], [support the sndio audio API [[default=yes]]]),
  1164                   , enable_sndio=yes)
  1165     if test x$enable_audio = xyes -a x$enable_sndio = xyes; then
  1166         AC_CHECK_HEADER(sndio.h, have_sndio_hdr=yes)
  1167         AC_CHECK_LIB(sndio, sio_open, have_sndio_lib=yes)
  1168 
  1169         AC_MSG_CHECKING(for sndio audio support)
  1170         have_sndio=no
  1171 
  1172         if test x$have_sndio_hdr = xyes -a x$have_sndio_lib = xyes; then
  1173             have_sndio=yes
  1174             SNDIO_LIBS="-lsndio"
  1175         fi
  1176 
  1177         AC_MSG_RESULT($have_sndio)
  1178 
  1179         if test x$have_sndio = xyes; then
  1180             AC_ARG_ENABLE(sndio-shared,
  1181 AS_HELP_STRING([--enable-sndio-shared], [dynamically load sndio audio support [[default=yes]]]),
  1182                           , enable_sndio_shared=yes)
  1183             sndio_lib=[`find_lib "libsndio.so.*" "$SNDIO_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1184 
  1185             if test x$have_loadso != xyes && \
  1186                test x$enable_sndio_shared = xyes; then
  1187                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic sndio loading])
  1188             fi
  1189             if test x$have_loadso = xyes && \
  1190                test x$enable_sndio_shared = xyes && test x$sndio_lib != x; then
  1191                 echo "-- dynamic libsndio -> $sndio_lib"
  1192                 AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_SNDIO_DYNAMIC, "$sndio_lib", [ ])
  1193                 SUMMARY_audio="${SUMMARY_audio} sndio(dynamic)"
  1194             else
  1195                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $SNDIO_LIBS"
  1196                 SUMMARY_audio="${SUMMARY_audio} sndio"
  1197             fi
  1198 
  1199             AC_DEFINE(SDL_AUDIO_DRIVER_SNDIO, 1, [ ])
  1200             SOURCES="$SOURCES $srcdir/src/audio/sndio/*.c"
  1201             EXTRA_CFLAGS="$EXTRA_CFLAGS $SNDIO_CFLAGS"
  1202             have_audio=yes
  1203         fi
  1204     fi
  1205 }
  1206 
  1207 dnl Find FusionSound
  1208 CheckFusionSound()
  1209 {
  1210     AC_ARG_ENABLE(fusionsound,
  1211 AS_HELP_STRING([--enable-fusionsound], [use FusionSound audio driver [[default=no]]]),
  1212                   , enable_fusionsound=no)
  1213     if test x$enable_audio = xyes -a x$enable_fusionsound = xyes; then
  1214         PKG_CHECK_MODULES([FUSIONSOUND], [fusionsound >= 1.1.1], fusionsound=yes, fusionsound=no)
  1215 
  1216         if test x$fusionsound = xyes; then
  1217             AC_DEFINE(SDL_AUDIO_DRIVER_FUSIONSOUND, 1, [ ])
  1218             SOURCES="$SOURCES $srcdir/src/audio/fusionsound/*.c"
  1219             EXTRA_CFLAGS="$EXTRA_CFLAGS $FUSIONSOUND_CFLAGS"
  1220             
  1221             AC_ARG_ENABLE(fusionsound-shared,
  1222 AS_HELP_STRING([--enable-fusionsound-shared], [dynamically load fusionsound audio support [[default=yes]]]),
  1223                           , enable_fusionsound_shared=yes)
  1224             fusionsound_shared=no
  1225             AC_MSG_CHECKING(for FusionSound dynamic loading support)
  1226             if test x$have_loadso != xyes && \
  1227                test x$enable_fusionsound_shared = xyes; then
  1228                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic fusionsound loading])
  1229             fi
  1230             if test x$have_loadso = xyes && \
  1231                test x$enable_fusionsound_shared = xyes; then
  1232                 AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_FUSIONSOUND_DYNAMIC, "libfusionsound.so", [ ])
  1233                 fusionsound_shared=yes
  1234                 SUMMARY_audio="${SUMMARY_audio} fusionsound(dynamic)"
  1235             else
  1236                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $FUSIONSOUND_LIBS"
  1237                 SUMMARY_audio="${SUMMARY_audio} fusionsound"
  1238             fi
  1239             AC_MSG_RESULT($fusionsound_shared)
  1240             
  1241             have_audio=yes
  1242         fi
  1243     fi
  1244 }
  1245 
  1246 dnl rcg07142001 See if the user wants the disk writer audio driver...
  1247 CheckDiskAudio()
  1248 {
  1249     AC_ARG_ENABLE(diskaudio,
  1250 AS_HELP_STRING([--enable-diskaudio], [support the disk writer audio driver [[default=yes]]]),
  1251                   , enable_diskaudio=yes)
  1252     if test x$enable_audio = xyes -a x$enable_diskaudio = xyes; then
  1253         AC_DEFINE(SDL_AUDIO_DRIVER_DISK, 1, [ ])
  1254         SOURCES="$SOURCES $srcdir/src/audio/disk/*.c"
  1255         SUMMARY_audio="${SUMMARY_audio} disk"
  1256     fi
  1257 }
  1258 
  1259 dnl rcg03142006 See if the user wants the dummy audio driver...
  1260 CheckDummyAudio()
  1261 {
  1262     AC_ARG_ENABLE(dummyaudio,
  1263 AS_HELP_STRING([--enable-dummyaudio], [support the dummy audio driver [[default=yes]]]),
  1264                   , enable_dummyaudio=yes)
  1265     if test x$enable_audio = xyes -a x$enable_dummyaudio = xyes; then
  1266         AC_DEFINE(SDL_AUDIO_DRIVER_DUMMY, 1, [ ])
  1267         SOURCES="$SOURCES $srcdir/src/audio/dummy/*.c"
  1268         SUMMARY_audio="${SUMMARY_audio} dummy"
  1269     fi
  1270 }
  1271 
  1272 dnl See if libsamplerate is available
  1273 CheckLibSampleRate()
  1274 {
  1275     AC_ARG_ENABLE(libsamplerate,
  1276 AS_HELP_STRING([--enable-libsamplerate], [use libsamplerate for audio rate conversion [[default=yes]]]),
  1277                   , enable_libsamplerate=yes)
  1278     if test x$enable_libsamplerate = xyes; then
  1279         AC_CHECK_HEADER(samplerate.h,
  1280                         have_samplerate_h_hdr=yes,
  1281                         have_samplerate_h_hdr=no)
  1282         if test x$have_samplerate_h_hdr = xyes; then
  1283             AC_DEFINE(HAVE_LIBSAMPLERATE_H, 1, [ ])
  1284 
  1285             AC_ARG_ENABLE(libsamplerate-shared,
  1286 AS_HELP_STRING([--enable-libsamplerate-shared], [dynamically load libsamplerate [[default=yes]]]),
  1287                           , enable_libsamplerate_shared=yes)
  1288 
  1289             samplerate_lib=[`find_lib "libsamplerate.so.*" "" | sed 's/.*\/\(.*\)/\1/; q'`]
  1290 
  1291             if test x$have_loadso != xyes && \
  1292                test x$enable_libsamplerate_shared = xyes; then
  1293                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic libsamplerate loading])
  1294             fi
  1295             if test x$have_loadso = xyes && \
  1296                test x$enable_libsamplerate_shared = xyes && test x$samplerate_lib != x; then
  1297                 echo "-- dynamic libsamplerate -> $samplerate_lib"
  1298                 AC_DEFINE_UNQUOTED(SDL_LIBSAMPLERATE_DYNAMIC, "$samplerate_lib", [ ])
  1299             else
  1300                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lsamplerate"
  1301             fi
  1302         fi
  1303     fi
  1304 }
  1305 
  1306 dnl Check for ARM instruction support using gas syntax
  1307 CheckARM()
  1308 {
  1309     AC_ARG_ENABLE(arm-simd,
  1310 AC_HELP_STRING([--enable-arm-simd], [use SIMD assembly blitters on ARM [[default=yes]]]),
  1311                   enable_arm_simd=$enableval, enable_arm_simd=yes)
  1312     if test x$enable_video = xyes -a x$enable_assembly = xyes -a x$enable_arm_simd = xyes; then
  1313         save_CFLAGS="$CFLAGS"
  1314         have_arm_simd=no
  1315         CFLAGS="-x assembler-with-cpp $CFLAGS"
  1316         
  1317         AC_MSG_CHECKING(for ARM SIMD)
  1318         AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
  1319         .text
  1320         .arch armv6
  1321         .object_arch armv4
  1322         .arm
  1323         .altmacro
  1324         #ifndef __ARM_EABI__
  1325         #error EABI is required (to be sure that calling conventions are compatible)
  1326         #endif
  1327         pld [r0]
  1328         uqadd8 r0, r0, r0
  1329         ]])], have_arm_simd=yes)
  1330         AC_MSG_RESULT($have_arm_simd)
  1331         
  1332         CFLAGS="$save_CFLAGS"
  1333         
  1334         if test x$have_arm_simd = xyes; then
  1335             AC_DEFINE(SDL_ARM_SIMD_BLITTERS)
  1336 dnl            SOURCES="$SOURCES $srcdir/src/video/arm/pixman-arm-simd*.c"
  1337             SOURCES="$SOURCES $srcdir/src/video/arm/pixman-arm-simd*.S"
  1338             WARN_ABOUT_ARM_SIMD_ASM_MIT="yes"
  1339         fi
  1340     fi
  1341 }
  1342 
  1343 dnl Check for ARM NEON instruction support using gas syntax
  1344 CheckNEON()
  1345 {
  1346     AC_ARG_ENABLE(arm-neon,
  1347 AC_HELP_STRING([--enable-arm-neon], [use NEON assembly blitters on ARM [[default=yes]]]),
  1348                   enable_arm_neon=$enableval, enable_arm_neon=yes)
  1349     if test x$enable_video = xyes -a x$enable_assembly = xyes -a x$enable_arm_neon = xyes; then
  1350         save_CFLAGS="$CFLAGS"
  1351         have_arm_neon=no
  1352         CFLAGS="-x assembler-with-cpp $CFLAGS"
  1353         
  1354         AC_MSG_CHECKING(for ARM NEON)
  1355         AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
  1356         .text
  1357         .fpu neon
  1358         .arch armv7a
  1359         .object_arch armv4
  1360         .eabi_attribute 10, 0
  1361         .arm
  1362         .altmacro
  1363         #ifndef __ARM_EABI__
  1364         #error EABI is required (to be sure that calling conventions are compatible)
  1365         #endif
  1366         pld [r0]
  1367         vmovn.u16 d0, q0
  1368         ]])], have_arm_neon=yes)
  1369         AC_MSG_RESULT($have_arm_neon)
  1370         
  1371         CFLAGS="$save_CFLAGS"
  1372         
  1373         if test x$have_arm_neon = xyes; then
  1374             AC_DEFINE(SDL_ARM_NEON_BLITTERS)
  1375 dnl            SOURCES="$SOURCES $srcdir/src/video/arm/pixman-arm-neon*.c"
  1376             SOURCES="$SOURCES $srcdir/src/video/arm/pixman-arm-neon*.S"
  1377             WARN_ABOUT_ARM_NEON_ASM_MIT="yes"
  1378         fi
  1379     fi
  1380 }
  1381 
  1382 dnl See if GCC's -fvisibility=hidden is supported (gcc4 and later, usually).
  1383 dnl  Details of this flag are here: http://gcc.gnu.org/wiki/Visibility
  1384 CheckVisibilityHidden()
  1385 {
  1386     AC_MSG_CHECKING(for GCC -fvisibility=hidden option)
  1387     have_gcc_fvisibility=no
  1388 
  1389     visibility_CFLAGS="-fvisibility=hidden"
  1390     save_CFLAGS="$CFLAGS"
  1391     CFLAGS="$save_CFLAGS $visibility_CFLAGS -Werror"
  1392     AC_TRY_COMPILE([
  1393     #if !defined(__GNUC__) || __GNUC__ < 4
  1394     #error SDL only uses visibility attributes in GCC 4 or newer
  1395     #endif
  1396     ],[
  1397     ],[
  1398     have_gcc_fvisibility=yes
  1399     ])
  1400     AC_MSG_RESULT($have_gcc_fvisibility)
  1401     CFLAGS="$save_CFLAGS"
  1402 
  1403     if test x$have_gcc_fvisibility = xyes; then
  1404         EXTRA_CFLAGS="$EXTRA_CFLAGS $visibility_CFLAGS"
  1405     fi
  1406 }
  1407 
  1408 dnl See if GCC's -fno-strict-aliasingis supported.
  1409 dnl  Reference: https://bugzilla.libsdl.org/show_bug.cgi?id=4254
  1410 CheckNoStrictAliasing()
  1411 {
  1412     AC_MSG_CHECKING(for GCC -fno-strict-aliasing option)
  1413     have_gcc_no_strict_aliasing=no
  1414 
  1415     save_CFLAGS="$CFLAGS"
  1416     CFLAGS="$save_CFLAGS -fno-strict-aliasing"
  1417     AC_TRY_COMPILE([
  1418     int x = 0;
  1419     ],[
  1420     ],[
  1421     have_gcc_no_strict_aliasing=yes
  1422     ])
  1423     AC_MSG_RESULT($have_gcc_no_strict_aliasing)
  1424     CFLAGS="$save_CFLAGS"
  1425 
  1426     if test x$have_gcc_no_strict_aliasing = xyes; then
  1427         EXTRA_CFLAGS="$EXTRA_CFLAGS -fno-strict-aliasing"
  1428     fi
  1429 }
  1430 
  1431 dnl See if GCC's -mpreferred-stack-boundary is supported.
  1432 dnl  Reference: http://bugzilla.libsdl.org/show_bug.cgi?id=1296
  1433 CheckStackBoundary()
  1434 {
  1435     AC_MSG_CHECKING(for GCC -mpreferred-stack-boundary option)
  1436     have_gcc_preferred_stack_boundary=no
  1437 
  1438     save_CFLAGS="$CFLAGS"
  1439     CFLAGS="$save_CFLAGS -mpreferred-stack-boundary=2"
  1440     AC_TRY_COMPILE([
  1441     int x = 0;
  1442     ],[
  1443     ],[
  1444     have_gcc_preferred_stack_boundary=yes
  1445     ])
  1446     AC_MSG_RESULT($have_gcc_preferred_stack_boundary)
  1447     CFLAGS="$save_CFLAGS"
  1448 
  1449     if test x$have_gcc_preferred_stack_boundary = xyes; then
  1450         EXTRA_CFLAGS="$EXTRA_CFLAGS -mpreferred-stack-boundary=2"
  1451     fi
  1452 }
  1453 
  1454 dnl See if GCC's -Wdeclaration-after-statement is supported.
  1455 dnl  This lets us catch things that would fail on a C89 compiler when using
  1456 dnl  a modern GCC.
  1457 CheckDeclarationAfterStatement()
  1458 {
  1459     AC_MSG_CHECKING(for GCC -Wdeclaration-after-statement option)
  1460     have_gcc_declaration_after_statement=no
  1461 
  1462     save_CFLAGS="$CFLAGS"
  1463     CFLAGS="$save_CFLAGS -Wdeclaration-after-statement -Werror=declaration-after-statement"
  1464     AC_TRY_COMPILE([
  1465     int x = 0;
  1466     ],[
  1467     ],[
  1468     have_gcc_declaration_after_statement=yes
  1469     ])
  1470     AC_MSG_RESULT($have_gcc_declaration_after_statement)
  1471     CFLAGS="$save_CFLAGS"
  1472 
  1473     if test x$have_gcc_declaration_after_statement = xyes; then
  1474         EXTRA_CFLAGS="$EXTRA_CFLAGS -Wdeclaration-after-statement -Werror=declaration-after-statement"
  1475     fi
  1476 }
  1477 
  1478 dnl See if GCC's -Wall is supported.
  1479 CheckWarnAll()
  1480 {
  1481     AC_MSG_CHECKING(for GCC -Wall option)
  1482     have_gcc_Wall=no
  1483 
  1484     save_CFLAGS="$CFLAGS"
  1485     CFLAGS="$save_CFLAGS -Wall"
  1486     AC_TRY_COMPILE([
  1487     int x = 0;
  1488     ],[
  1489     ],[
  1490     have_gcc_Wall=yes
  1491     ])
  1492     AC_MSG_RESULT($have_gcc_Wall)
  1493     CFLAGS="$save_CFLAGS"
  1494 
  1495     if test x$have_gcc_Wall = xyes; then
  1496         EXTRA_CFLAGS="$EXTRA_CFLAGS -Wall"
  1497 
  1498         dnl Haiku headers use multicharacter constants all over the place. Ignore these warnings when using -Wall.
  1499         AC_MSG_CHECKING(for necessary GCC -Wno-multichar option)
  1500         need_gcc_Wno_multichar=no
  1501         case "$host" in
  1502             *-*-haiku*)
  1503                 need_gcc_Wno_multichar=yes
  1504                 ;;
  1505         esac
  1506         AC_MSG_RESULT($need_gcc_Wno_multichar)
  1507         if test x$need_gcc_Wno_multichar = xyes; then
  1508             EXTRA_CFLAGS="$EXTRA_CFLAGS -Wno-multichar"
  1509         fi
  1510     fi
  1511 }
  1512 
  1513 dnl Check for Wayland
  1514 CheckWayland()
  1515 {
  1516     AC_ARG_ENABLE(video-wayland,
  1517 AS_HELP_STRING([--enable-video-wayland], [use Wayland video driver [[default=yes]]]),
  1518                   ,enable_video_wayland=yes)
  1519 
  1520     AC_ARG_ENABLE(video-wayland-qt-touch,
  1521 AS_HELP_STRING([--enable-video-wayland-qt-touch], [QtWayland server support for Wayland video driver [[default=yes]]]),
  1522                   ,enable_video_wayland_qt_touch=yes)
  1523 
  1524     if test x$enable_video = xyes -a x$enable_video_wayland = xyes; then
  1525         AC_MSG_CHECKING(for Wayland support)
  1526         video_wayland=no
  1527         if  test x$video_opengl_egl = xyes && \
  1528             test x$video_opengles_v2 = xyes; then
  1529             if $PKG_CONFIG --exists wayland-client wayland-scanner wayland-protocols wayland-egl wayland-cursor egl xkbcommon ; then
  1530                 WAYLAND_CFLAGS=`$PKG_CONFIG --cflags wayland-client wayland-egl wayland-cursor xkbcommon`
  1531                 WAYLAND_LIBS=`$PKG_CONFIG --libs wayland-client wayland-egl wayland-cursor xkbcommon`
  1532                 WAYLAND_SCANNER=`$PKG_CONFIG --variable=wayland_scanner wayland-scanner`
  1533                 video_wayland=yes
  1534             fi
  1535         fi
  1536         AC_MSG_RESULT($video_wayland)
  1537 
  1538         if test x$video_wayland = xyes; then
  1539             AC_DEFINE(SDL_VIDEO_DRIVER_WAYLAND, 1, [ ])
  1540             if test x$enable_video_wayland_qt_touch = xyes; then
  1541                 AC_DEFINE(SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH, 1, [ ])
  1542             fi
  1543 
  1544             WAYLAND_SOURCES="$srcdir/src/video/wayland/*.c"
  1545             SOURCES="$SOURCES $WAYLAND_SOURCES"
  1546             EXTRA_CFLAGS="$EXTRA_CFLAGS $WAYLAND_CFLAGS -I\$(gen)"
  1547             AC_ARG_ENABLE(wayland-shared,
  1548 AS_HELP_STRING([--enable-wayland-shared], [dynamically load Wayland support [[default=maybe]]]),
  1549                           , enable_wayland_shared=maybe)
  1550 
  1551             dnl FIXME: Do BSD and OS X need special cases?
  1552             case "$host" in
  1553                 *)
  1554                     wayland_client_lib=[`find_lib "libwayland-client.so.*" "$WAYLAND_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1555                     wayland_egl_lib=[`find_lib "libwayland-egl.so.*" "$WAYLAND_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1556                     if test x$wayland_egl_lib = x; then
  1557                         dnl This works in Ubuntu 13.10, maybe others
  1558                         wayland_egl_lib=[`find_lib "mesa-egl/libwayland-egl.so.*" "$WAYLAND_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1559                     fi
  1560                     wayland_cursor_lib=[`find_lib "libwayland-cursor.so.*" "$WAYLAND_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1561                     xkbcommon_lib=[`find_lib "libxkbcommon.so.*" "$WAYLAND_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1562                     ;;
  1563             esac
  1564 
  1565             if test x$enable_wayland_shared = xmaybe; then
  1566                 enable_wayland_shared=yes
  1567             fi
  1568             if test x$have_loadso != xyes && \
  1569                test x$enable_wayland_shared = xyes; then
  1570                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic Wayland loading])
  1571                 enable_wayland_shared=no
  1572             fi
  1573             if test x$have_loadso = xyes && \
  1574                test x$enable_wayland_shared = xyes && \
  1575                test x$wayland_client_lib != x && \
  1576                test x$wayland_egl_lib != x && \
  1577                test x$wayland_cursor_lib != x && \
  1578                test x$xkbcommon_lib != x; then
  1579                 echo "-- dynamic libwayland-client -> $wayland_client_lib"
  1580                 echo "-- dynamic libwayland-egl -> $wayland_egl_lib"
  1581                 echo "-- dynamic libwayland-cursor -> $wayland_cursor_lib"
  1582                 echo "-- dynamic libxkbcommon -> $xkbcommon_lib"
  1583                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC, "$wayland_client_lib", [ ])
  1584                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_EGL, "$wayland_egl_lib", [ ])
  1585                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_CURSOR, "$wayland_cursor_lib", [ ])
  1586                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_XKBCOMMON, "$xkbcommon_lib", [ ])
  1587                 SUMMARY_video="${SUMMARY_video} wayland(dynamic)"
  1588             else
  1589                 enable_wayland_shared=no
  1590                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $WAYLAND_LIBS"
  1591                 SUMMARY_video="${SUMMARY_video} wayland"
  1592             fi
  1593             have_video=yes
  1594         fi
  1595     fi
  1596 }
  1597 
  1598 
  1599 dnl Check for Native Client stuff
  1600 CheckNativeClient()
  1601 {
  1602         AC_TRY_COMPILE([
  1603           #if !defined(__native_client__)
  1604           #error "NO NACL"
  1605           #endif
  1606         ],[
  1607         ],[
  1608         AC_DEFINE(SDL_VIDEO_DRIVER_NACL, 1, [ ])
  1609         AC_DEFINE(SDL_AUDIO_DRIVER_NACL, 1, [ ])
  1610         AC_DEFINE(HAVE_POW, 1, [ ])
  1611         AC_DEFINE(HAVE_OPENGLES2, 1, [ ])
  1612         AC_DEFINE(SDL_VIDEO_OPENGL_ES2, 1, [ ])
  1613         AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES2, 1, [ ])
  1614 
  1615         SDL_LIBS="-lppapi_simple -lppapi_gles2 $SDL_LIBS"
  1616 
  1617         SDLMAIN_SOURCES="$srcdir/src/main/nacl/*.c"
  1618         SOURCES="$SOURCES $srcdir/src/audio/nacl/*.c"
  1619         SUMMARY_audio="${SUMMARY_audio} nacl"
  1620         SOURCES="$SOURCES $srcdir/src/video/nacl/*.c"
  1621         SUMMARY_video="${SUMMARY_video} nacl opengles2"
  1622         ])
  1623 }
  1624 
  1625 
  1626 CheckRPI()
  1627 {
  1628     AC_ARG_ENABLE(video-rpi,
  1629 AS_HELP_STRING([--enable-video-rpi], [use Raspberry Pi video driver [[default=yes]]]),
  1630                   , enable_video_rpi=yes)
  1631     if test x$enable_video = xyes -a x$enable_video_rpi = xyes; then
  1632         PKG_CHECK_MODULES([RPI], [bcm_host brcmegl], video_rpi=yes, video_rpi=no)
  1633 
  1634         if test x$video_rpi = xno; then
  1635             if test x$ARCH = xnetbsd; then
  1636                 RPI_CFLAGS="-I/usr/pkg/include -I/usr/pkg/include/interface/vcos/pthreads -I/usr/pkg/include/interface/vmcs_host/linux"
  1637                 RPI_LIBS="-Wl,-R/usr/pkg/lib -L/usr/pkg/lib -lbcm_host"
  1638             else
  1639                 RPI_CFLAGS="-I/opt/vc/include -I/opt/vc/include/interface/vcos/pthreads -I/opt/vc/include/interface/vmcs_host/linux"
  1640                 RPI_LIBS="-Wl,-rpath,/opt/vc/lib -L/opt/vc/lib -lbcm_host"
  1641             fi
  1642         fi
  1643 
  1644         # Save the original compiler flags and libraries
  1645         ac_save_cflags="$CFLAGS"; ac_save_libs="$LIBS"
  1646 
  1647         # Add the Raspberry Pi compiler flags and libraries
  1648         CFLAGS="$CFLAGS $RPI_CFLAGS"; LIBS="$LIBS $RPI_LIBS"
  1649 
  1650         AC_MSG_CHECKING(for Raspberry Pi)
  1651         have_video_rpi=no
  1652         AC_TRY_LINK([
  1653           #include <bcm_host.h>
  1654         ],[
  1655           bcm_host_init();
  1656         ],[
  1657         have_video_rpi=yes
  1658         ],[
  1659         ])
  1660         AC_MSG_RESULT($have_video_rpi)
  1661 
  1662         # Restore the compiler flags and libraries
  1663         CFLAGS="$ac_save_cflags"; LIBS="$ac_save_libs"
  1664         
  1665         if test x$have_video_rpi = xyes; then
  1666             CFLAGS="$CFLAGS $RPI_CFLAGS"
  1667             SDL_CFLAGS="$SDL_CFLAGS $RPI_CFLAGS"
  1668             EXTRA_CFLAGS="$EXTRA_CFLAGS $RPI_CFLAGS"
  1669             EXTRA_LDFLAGS="$EXTRA_LDFLAGS $RPI_LIBS"
  1670             SOURCES="$SOURCES $srcdir/src/video/raspberry/*.c"
  1671             AC_DEFINE(SDL_VIDEO_DRIVER_RPI, 1, [ ])
  1672             SUMMARY_video="${SUMMARY_video} rpi"
  1673         fi
  1674     fi
  1675 }
  1676 
  1677 dnl Find the X11 include and library directories
  1678 CheckX11()
  1679 {
  1680     AC_ARG_ENABLE(video-x11,
  1681 AS_HELP_STRING([--enable-video-x11], [use X11 video driver [[default=yes]]]),
  1682                   , enable_video_x11=yes)
  1683     if test x$enable_video = xyes -a x$enable_video_x11 = xyes; then
  1684         case "$host" in
  1685             *-*-darwin*)
  1686                 # This isn't necessary for X11, but fixes GLX detection
  1687                 if test "x$x_includes" = xNONE && \
  1688                    test "x$x_libraries" = xNONE && \
  1689                    test -d /opt/X11/include && \
  1690                    test -d /opt/X11/lib; then
  1691                     x_includes="/opt/X11/include"
  1692                     x_libraries="/opt/X11/lib"
  1693                 fi
  1694                 ;;
  1695         esac
  1696         AC_PATH_X
  1697         AC_PATH_XTRA
  1698         if test x$have_x = xyes; then
  1699             AC_ARG_ENABLE(x11-shared,
  1700 AS_HELP_STRING([--enable-x11-shared], [dynamically load X11 support [[default=maybe]]]),
  1701                           , enable_x11_shared=maybe)
  1702 
  1703             case "$host" in
  1704                 *-*-darwin*)
  1705                     # Apple now puts this in /opt/X11
  1706                     x11_lib='/opt/X11/lib/libX11.6.dylib'
  1707                     x11ext_lib='/opt/X11/lib/libXext.6.dylib'
  1708                     xcursor_lib='/opt/X11/lib/libXcursor.1.dylib'
  1709                     xinerama_lib='/opt/X11/lib/libXinerama.1.dylib'
  1710                     xinput_lib='/opt/X11/lib/libXi.6.dylib'
  1711                     xrandr_lib='/opt/X11/lib/libXrandr.2.dylib'
  1712                     xrender_lib='/opt/X11/lib/libXrender.1.dylib'
  1713                     xss_lib='/opt/X11/lib/libXss.1.dylib'
  1714                     xvidmode_lib='/opt/X11/lib/libXxf86vm.1.dylib'
  1715                     ;;
  1716                 *-*-openbsd*)
  1717                     x11_lib='libX11.so'
  1718                     x11ext_lib='libXext.so'
  1719                     xcursor_lib='libXcursor.so'
  1720                     xinerama_lib='libXinerama.so'
  1721                     xinput_lib='libXi.so'
  1722                     xrandr_lib='libXrandr.so'
  1723                     xrender_lib='libXrender.so'
  1724                     xss_lib='libXss.so'
  1725                     xvidmode_lib='libXxf86vm.so'
  1726                     ;;
  1727                 *)
  1728                     x11_lib=[`find_lib "libX11.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1729                     x11ext_lib=[`find_lib "libXext.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1730                     xcursor_lib=[`find_lib "libXcursor.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1731                     xinerama_lib=[`find_lib "libXinerama.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1732                     xinput_lib=[`find_lib "libXi.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1733                     xrandr_lib=[`find_lib "libXrandr.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1734                     xrender_lib=[`find_lib "libXrender.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1735                     xss_lib=[`find_lib "libXss.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1736                     xvidmode_lib=[`find_lib "libXxf86vm.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1737                     ;;
  1738             esac
  1739 
  1740             if test x$ac_cv_func_shmat != xyes; then
  1741                 X_CFLAGS="$X_CFLAGS -DNO_SHARED_MEMORY"
  1742             fi
  1743             CFLAGS="$CFLAGS $X_CFLAGS"
  1744             LDFLAGS="$LDFLAGS $X_LIBS"
  1745 
  1746             AC_CHECK_HEADER(X11/extensions/Xext.h,
  1747                             have_xext_h_hdr=yes,
  1748                             have_xext_h_hdr=no,
  1749                             [#include <X11/Xlib.h>
  1750                              #include <X11/Xproto.h>
  1751                             ])
  1752             if test x$have_xext_h_hdr != xyes; then
  1753                AC_MSG_ERROR([
  1754 *** Missing Xext.h, maybe you need to install the libxext-dev package?
  1755                ])
  1756             fi
  1757 
  1758             AC_DEFINE(SDL_VIDEO_DRIVER_X11, 1, [ ])
  1759             SOURCES="$SOURCES $srcdir/src/video/x11/*.c"
  1760             EXTRA_CFLAGS="$EXTRA_CFLAGS $X_CFLAGS"
  1761 
  1762             # Needed so SDL applications can include SDL_syswm.h
  1763             SDL_CFLAGS="$SDL_CFLAGS $X_CFLAGS"
  1764 
  1765             if test x$enable_x11_shared = xmaybe; then
  1766                 enable_x11_shared=yes
  1767             fi
  1768             if test x$have_loadso != xyes && \
  1769                test x$enable_x11_shared = xyes; then
  1770                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic X11 loading])
  1771                 enable_x11_shared=no
  1772             fi
  1773             if test x$have_loadso = xyes && \
  1774                test x$enable_x11_shared = xyes && test x$x11_lib != x && test x$x11ext_lib != x; then
  1775                 echo "-- dynamic libX11 -> $x11_lib"
  1776                 echo "-- dynamic libX11ext -> $x11ext_lib"
  1777                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC, "$x11_lib", [ ])
  1778                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT, "$x11ext_lib", [ ])
  1779                 SUMMARY_video="${SUMMARY_video} x11(dynamic)"
  1780             else
  1781                 enable_x11_shared=no
  1782                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $X_LIBS -lX11 -lXext"
  1783                 SUMMARY_video="${SUMMARY_video} x11"
  1784             fi
  1785             have_video=yes
  1786 
  1787             AC_MSG_CHECKING(for const parameter to XextAddDisplay)
  1788             have_const_param_XextAddDisplay=no
  1789             AC_TRY_COMPILE([
  1790               #include <X11/Xlib.h>
  1791               #include <X11/Xproto.h>
  1792               #include <X11/extensions/Xext.h>
  1793               #include <X11/extensions/extutil.h>
  1794               extern XExtDisplayInfo* XextAddDisplay(XExtensionInfo* a,Display* b,_Xconst char* c,XExtensionHooks* d,int e,XPointer f);
  1795             ],[
  1796             ],[
  1797             have_const_param_XextAddDisplay=yes
  1798             AC_DEFINE([SDL_VIDEO_DRIVER_X11_CONST_PARAM_XEXTADDDISPLAY], 1, [ ])
  1799             ])
  1800             AC_MSG_RESULT($have_const_param_XextAddDisplay)
  1801 
  1802             dnl AC_CHECK_LIB(X11, XGetEventData, AC_DEFINE(SDL_VIDEO_DRIVER_X11_SUPPORTS_GENERIC_EVENTS, 1, [Have XGenericEvent]))
  1803             AC_MSG_CHECKING([for XGenericEvent])
  1804             have_XGenericEvent=no
  1805             AC_TRY_COMPILE([
  1806                 #include <X11/Xlib.h>
  1807             ],[
  1808 Display *display;
  1809 XEvent event;
  1810 XGenericEventCookie *cookie = &event.xcookie;
  1811 XNextEvent(display, &event);
  1812 XGetEventData(display, cookie);
  1813 XFreeEventData(display, cookie);
  1814             ],[
  1815                 have_XGenericEvent=yes
  1816                 AC_DEFINE([SDL_VIDEO_DRIVER_X11_SUPPORTS_GENERIC_EVENTS], 1, [ ])
  1817             ])
  1818             AC_MSG_RESULT($have_XGenericEvent)
  1819 
  1820             AC_CHECK_LIB(X11, XkbKeycodeToKeysym, AC_DEFINE(SDL_VIDEO_DRIVER_X11_HAS_XKBKEYCODETOKEYSYM, 1, [Have XkbKeycodeToKeysym]))
  1821 
  1822             AC_ARG_ENABLE(video-x11-xcursor,
  1823 AS_HELP_STRING([--enable-video-x11-xcursor], [enable X11 Xcursor support [[default=yes]]]),
  1824                             , enable_video_x11_xcursor=yes)
  1825             if test x$enable_video_x11_xcursor = xyes; then
  1826                 definitely_enable_video_x11_xcursor=no
  1827                 AC_CHECK_HEADER(X11/Xcursor/Xcursor.h,
  1828                                 have_xcursor_h_hdr=yes,
  1829                                 have_xcursor_h_hdr=no,
  1830                                 [#include <X11/Xlib.h>
  1831                                 ])
  1832                 if test x$have_xcursor_h_hdr = xyes; then
  1833                     if test x$enable_x11_shared = xyes && test x$xcursor_lib != x ; then
  1834                         echo "-- dynamic libXcursor -> $xcursor_lib"
  1835                         AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XCURSOR, "$xcursor_lib", [ ])
  1836                         definitely_enable_video_x11_xcursor=yes
  1837                     else
  1838                         AC_CHECK_LIB(Xcursor, XcursorImageCreate, have_xcursor_lib=yes)
  1839                         if test x$have_xcursor_lib = xyes ; then
  1840                             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lXcursor"
  1841                             definitely_enable_video_x11_xcursor=yes
  1842                         fi
  1843                     fi
  1844                 fi
  1845             fi
  1846             if test x$definitely_enable_video_x11_xcursor = xyes; then
  1847                 AC_DEFINE(SDL_VIDEO_DRIVER_X11_XCURSOR, 1, [ ])
  1848                 SUMMARY_video_x11="${SUMMARY_video_x11} xcursor"
  1849             fi
  1850             AC_ARG_ENABLE(video-x11-xdbe,
  1851 AS_HELP_STRING([--enable-video-x11-xdbe], [enable X11 Xdbe support [[default=yes]]]),
  1852                             , enable_video_x11_xdbe=yes)
  1853             if test x$enable_video_x11_xdbe = xyes; then
  1854                 AC_CHECK_HEADER(X11/extensions/Xdbe.h,
  1855                                 have_dbe_h_hdr=yes,
  1856                                 have_dbe_h_hdr=no,
  1857                                 [#include <X11/Xlib.h>
  1858                                 ])
  1859                 if test x$have_dbe_h_hdr = xyes; then
  1860                     AC_DEFINE(SDL_VIDEO_DRIVER_X11_XDBE, 1, [ ])
  1861                     SUMMARY_video_x11="${SUMMARY_video_x11} xdbe"
  1862                 fi
  1863             fi
  1864             AC_ARG_ENABLE(video-x11-xinerama,
  1865 AS_HELP_STRING([--enable-video-x11-xinerama], [enable X11 Xinerama support [[default=yes]]]),
  1866                             , enable_video_x11_xinerama=yes)
  1867             if test x$enable_video_x11_xinerama = xyes; then
  1868                 definitely_enable_video_x11_xinerama=no
  1869                 AC_CHECK_HEADER(X11/extensions/Xinerama.h,
  1870                                 have_xinerama_h_hdr=yes,
  1871                                 have_xinerama_h_hdr=no,
  1872                                 [#include <X11/Xlib.h>
  1873                                 ])
  1874                 if test x$have_xinerama_h_hdr = xyes; then
  1875                     if test x$enable_x11_shared = xyes && test x$xinerama_lib != x ; then
  1876                         echo "-- dynamic libXinerama -> $xinerama_lib"
  1877                         AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XINERAMA, "$xinerama_lib", [ ])
  1878                         definitely_enable_video_x11_xinerama=yes
  1879                     else
  1880                         AC_CHECK_LIB(Xinerama, XineramaQueryExtension, have_xinerama_lib=yes)
  1881                         if test x$have_xinerama_lib = xyes ; then
  1882                             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lXinerama"
  1883                             definitely_enable_video_x11_xinerama=yes
  1884                         fi
  1885                     fi
  1886                 fi
  1887             fi
  1888             if test x$definitely_enable_video_x11_xinerama = xyes; then
  1889                 AC_DEFINE(SDL_VIDEO_DRIVER_X11_XINERAMA, 1, [ ])
  1890                 SUMMARY_video_x11="${SUMMARY_video_x11} xinerama"
  1891             fi
  1892             AC_ARG_ENABLE(video-x11-xinput,
  1893 AS_HELP_STRING([--enable-video-x11-xinput], [enable X11 XInput extension for manymouse, tablets, etc [[default=yes]]]),
  1894                             , enable_video_x11_xinput=yes)
  1895             if test x$enable_video_x11_xinput = xyes; then
  1896                 definitely_enable_video_x11_xinput=no
  1897                 AC_CHECK_HEADER(X11/extensions/XInput2.h,
  1898                                 have_xinput_h_hdr=yes,
  1899                                 have_xinput_h_hdr=no,
  1900                                 [#include <X11/Xlib.h>
  1901                                 ])
  1902                 if test x$have_xinput_h_hdr = xyes; then
  1903                     if test x$enable_x11_shared = xyes && test x$xinput_lib != x ; then
  1904                         echo "-- dynamic libXi -> $xinput_lib"
  1905                         AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XINPUT2, "$xinput_lib", [ ])
  1906                         definitely_enable_video_x11_xinput=yes
  1907                     else
  1908                         AC_CHECK_LIB(Xi, XOpenDevice, have_xinput_lib=yes)
  1909                         if test x$have_xinput_lib = xyes ; then
  1910                             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lXi"
  1911                             definitely_enable_video_x11_xinput=yes
  1912                         fi
  1913                     fi
  1914                 fi
  1915             fi
  1916             if test x$definitely_enable_video_x11_xinput = xyes; then
  1917                 SUMMARY_video_x11="${SUMMARY_video_x11} xinput2"
  1918                 AC_DEFINE(SDL_VIDEO_DRIVER_X11_XINPUT2, 1, [ ])
  1919                 AC_MSG_CHECKING(for xinput2 multitouch)
  1920                 have_xinput2_multitouch=no
  1921                 AC_TRY_COMPILE([
  1922                     #include <X11/Xlib.h>
  1923                     #include <X11/Xproto.h>
  1924                     #include <X11/extensions/XInput2.h>
  1925                     ],[
  1926 int event_type = XI_TouchBegin;
  1927 XITouchClassInfo *t;
  1928                     ],[
  1929                     have_xinput2_multitouch=yes
  1930                     AC_DEFINE([SDL_VIDEO_DRIVER_X11_XINPUT2_SUPPORTS_MULTITOUCH], 1, [])
  1931                     SUMMARY_video_x11="${SUMMARY_video_x11} xinput2_multitouch"
  1932                     ])
  1933                 AC_MSG_RESULT($have_xinput2_multitouch)
  1934             fi
  1935             AC_ARG_ENABLE(video-x11-xrandr,
  1936 AS_HELP_STRING([--enable-video-x11-xrandr], [enable X11 Xrandr extension for fullscreen [[default=yes]]]),
  1937                             , enable_video_x11_xrandr=yes)
  1938             if test x$enable_video_x11_xrandr = xyes; then
  1939                 dnl XRRScreenResources is only present in Xrandr >= 1.2, we use that as a test.
  1940                 definitely_enable_video_x11_xrandr=no
  1941                 have_xrandr_h_hdr=no
  1942                 AC_TRY_COMPILE([
  1943                 #include <X11/Xlib.h>
  1944                 #include <X11/extensions/Xrandr.h>
  1945                 ],[
  1946                 XRRScreenResources *res = NULL;
  1947                 ],[
  1948                 have_xrandr_h_hdr=yes
  1949                 ])
  1950                 if test x$have_xrandr_h_hdr = xyes; then
  1951                     if test x$enable_x11_shared = xyes && test x$xrandr_lib != x ; then
  1952                         echo "-- dynamic libXrandr -> $xrandr_lib"
  1953                         AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR, "$xrandr_lib", [ ])
  1954                         definitely_enable_video_x11_xrandr=yes
  1955                     else
  1956                         AC_CHECK_LIB(Xrandr, XRRQueryExtension, have_xrandr_lib=yes)
  1957                         if test x$have_xrandr_lib = xyes ; then
  1958                             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lXrandr"
  1959                             definitely_enable_video_x11_xrandr=yes
  1960                         fi
  1961                     fi
  1962                 fi
  1963             fi
  1964             if test x$definitely_enable_video_x11_xrandr = xyes; then
  1965                 AC_DEFINE(SDL_VIDEO_DRIVER_X11_XRANDR, 1, [ ])
  1966                 SUMMARY_video_x11="${SUMMARY_video_x11} xrandr"
  1967             fi
  1968             AC_ARG_ENABLE(video-x11-scrnsaver,
  1969 AS_HELP_STRING([--enable-video-x11-scrnsaver], [enable X11 screensaver extension [[default=yes]]]),
  1970                             , enable_video_x11_scrnsaver=yes)
  1971             if test x$enable_video_x11_scrnsaver = xyes; then
  1972                 AC_CHECK_HEADER(X11/extensions/scrnsaver.h,
  1973                                 have_scrnsaver_h_hdr=yes,
  1974                                 have_scrnsaver_h_hdr=no,
  1975                                 [#include <X11/Xlib.h>
  1976                                 ])
  1977                 if test x$have_scrnsaver_h_hdr = xyes; then
  1978                     if test x$enable_x11_shared = xyes && test x$xss_lib != x ; then
  1979                         echo "-- dynamic libXss -> $xss_lib"
  1980                         AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XSS, "$xss_lib", [ ])
  1981                         definitely_enable_video_x11_scrnsaver=yes
  1982                     else
  1983                         AC_CHECK_LIB(Xss, XScreenSaverSuspend, have_xss_lib=yes)
  1984                         if test x$have_xss_lib = xyes ; then
  1985                             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lXss"
  1986                             definitely_enable_video_x11_scrnsaver=yes
  1987                         fi
  1988                     fi
  1989                 fi
  1990             fi
  1991             if test x$definitely_enable_video_x11_scrnsaver = xyes; then
  1992                 AC_DEFINE(SDL_VIDEO_DRIVER_X11_XSCRNSAVER, 1, [ ])
  1993                 SUMMARY_video_x11="${SUMMARY_video_x11} xscrnsaver"
  1994             fi
  1995             AC_ARG_ENABLE(video-x11-xshape,
  1996 AS_HELP_STRING([--enable-video-x11-xshape], [enable X11 XShape support [[default=yes]]]),
  1997                             , enable_video_x11_xshape=yes)
  1998             if test x$enable_video_x11_xshape = xyes; then
  1999                 AC_CHECK_HEADER(X11/extensions/shape.h,
  2000                                 have_shape_h_hdr=yes,
  2001                                 have_shape_h_hdr=no,
  2002                                 [#include <X11/Xlib.h>
  2003                                 ])
  2004                 if test x$have_shape_h_hdr = xyes; then
  2005                     AC_DEFINE(SDL_VIDEO_DRIVER_X11_XSHAPE, 1, [ ])
  2006                     SUMMARY_video_x11="${SUMMARY_video_x11} xshape"
  2007                 fi
  2008             fi
  2009             AC_ARG_ENABLE(video-x11-vm,
  2010 AS_HELP_STRING([--enable-video-x11-vm], [use X11 VM extension for fullscreen [[default=yes]]]),
  2011                             , enable_video_x11_vm=yes)
  2012             if test x$enable_video_x11_vm = xyes; then
  2013                 definitely_enable_video_x11_vm=no
  2014                 AC_CHECK_HEADER(X11/extensions/xf86vmode.h,
  2015                                 have_vm_h_hdr=yes,
  2016                                 have_vm_h_hdr=no,
  2017                                 [#include <X11/Xlib.h>
  2018                                 ])
  2019                 if test x$have_vm_h_hdr = xyes; then
  2020                     if test x$enable_x11_shared = xyes && test x$xvidmode_lib != x ; then
  2021                         echo "-- dynamic libXxf86vm -> $xvidmode_lib"
  2022                         AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XVIDMODE, "$xvidmode_lib", [ ])
  2023                         definitely_enable_video_x11_vm=yes
  2024                     else
  2025                         AC_CHECK_LIB(Xxf86vm, XF86VidModeQueryVersion, have_vm_lib=yes)
  2026                         if test x$have_vm_lib = xyes ; then
  2027                             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lXxf86vm"
  2028                             definitely_enable_video_x11_vm=yes
  2029                         fi
  2030                     fi
  2031                 fi
  2032             fi
  2033             if test x$definitely_enable_video_x11_vm = xyes; then
  2034                 AC_DEFINE(SDL_VIDEO_DRIVER_X11_XVIDMODE, 1, [ ])
  2035                 SUMMARY_video_x11="${SUMMARY_video_x11} xvidmode"
  2036             fi
  2037         fi
  2038     fi
  2039 }
  2040 
  2041 dnl Set up the Vivante video driver if enabled
  2042 CheckVivanteVideo()
  2043 {
  2044     AC_ARG_ENABLE(video-vivante,
  2045 AS_HELP_STRING([--enable-video-vivante], [use Vivante EGL video driver [[default=yes]]]),
  2046                   , enable_video_vivante=yes)
  2047     if test x$enable_video = xyes -a x$enable_video_vivante = xyes; then
  2048         AC_MSG_CHECKING(for Vivante VDK API)
  2049         have_vivante_vdk=no
  2050         AC_TRY_COMPILE([
  2051           #define LINUX
  2052           #define EGL_API_FB
  2053           #include <gc_vdk.h>
  2054         ],[
  2055         ],[
  2056         have_vivante_vdk=yes
  2057         ])
  2058         AC_MSG_RESULT($have_vivante_vdk)
  2059 
  2060         AC_MSG_CHECKING(for Vivante FB API)
  2061         have_vivante_egl=no
  2062         AC_TRY_COMPILE([
  2063           #define LINUX
  2064           #define EGL_API_FB
  2065           #include <EGL/eglvivante.h>
  2066         ],[
  2067         ],[
  2068         have_vivante_egl=yes
  2069         ])
  2070         AC_MSG_RESULT($have_vivante_egl)
  2071 
  2072         if test x$have_vivante_vdk = xyes -o x$have_vivante_egl = xyes; then
  2073             AC_DEFINE(SDL_VIDEO_DRIVER_VIVANTE, 1, [ ])
  2074             EXTRA_CFLAGS="$EXTRA_CFLAGS -DLINUX -DEGL_API_FB"
  2075             if test x$have_vivante_vdk = xyes; then
  2076                 AC_DEFINE(SDL_VIDEO_DRIVER_VIVANTE_VDK, 1, [ ])
  2077                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lVDK"
  2078             fi
  2079             SOURCES="$SOURCES $srcdir/src/video/vivante/*.c"
  2080             SUMMARY_video="${SUMMARY_video} vivante"
  2081             have_video=yes
  2082         fi
  2083     fi
  2084 }
  2085 
  2086 dnl Set up the Haiku video driver if enabled
  2087 CheckHaikuVideo()
  2088 {
  2089     if test x$enable_video = xyes; then
  2090         AC_DEFINE(SDL_VIDEO_DRIVER_HAIKU, 1, [ ])
  2091         SOURCES="$SOURCES $srcdir/src/video/haiku/*.cc"
  2092         have_video=yes
  2093         SUMMARY_video="${SUMMARY_video} haiku"
  2094     fi
  2095 }
  2096 
  2097 dnl Set up the Cocoa video driver for Mac OS X (but not Darwin)
  2098 CheckCOCOA()
  2099 {
  2100     AC_ARG_ENABLE(video-cocoa,
  2101 AS_HELP_STRING([--enable-video-cocoa], [use Cocoa video driver [[default=yes]]]),
  2102                   , enable_video_cocoa=yes)
  2103     if test x$enable_video = xyes -a x$enable_video_cocoa = xyes; then
  2104         save_CFLAGS="$CFLAGS"
  2105         dnl Work around that we don't have Objective-C support in autoconf
  2106         CFLAGS="$CFLAGS -x objective-c"
  2107         AC_MSG_CHECKING(for Cocoa framework)
  2108         have_cocoa=no
  2109         AC_TRY_COMPILE([
  2110           #import <Cocoa/Cocoa.h>
  2111         ],[
  2112         ],[
  2113         have_cocoa=yes
  2114         ])
  2115         AC_MSG_RESULT($have_cocoa)
  2116         CFLAGS="$save_CFLAGS"
  2117         if test x$have_cocoa = xyes; then
  2118             AC_DEFINE(SDL_VIDEO_DRIVER_COCOA, 1, [ ])
  2119             SOURCES="$SOURCES $srcdir/src/video/cocoa/*.m"
  2120             SUMMARY_video="${SUMMARY_video} cocoa"
  2121             have_video=yes
  2122         fi
  2123     fi
  2124 }
  2125 
  2126 CheckMETAL()
  2127 {
  2128     AC_ARG_ENABLE(video-metal,
  2129 AC_HELP_STRING([--enable-video-metal], [include Metal support [[default=yes]]]),
  2130               , enable_video_metal=yes)
  2131     AC_ARG_ENABLE(render-metal,
  2132 AS_HELP_STRING([--enable-render-metal], [enable the Metal render driver [[default=yes]]]),
  2133                                 , enable_render_metal=yes)
  2134     if test x$enable_video = xyes -a x$enable_video_metal = xyes; then
  2135         save_CFLAGS="$CFLAGS"
  2136         dnl Work around that we don't have Objective-C support in autoconf
  2137         CFLAGS="$CFLAGS -x objective-c"
  2138         AC_MSG_CHECKING(for Metal framework)
  2139         have_metal=no
  2140         AC_TRY_COMPILE([
  2141           #import <Cocoa/Cocoa.h>
  2142           #import <Metal/Metal.h>
  2143           #import <QuartzCore/CAMetalLayer.h>
  2144 
  2145           #if !TARGET_CPU_X86_64
  2146           #error Metal doesn't work on this configuration
  2147           #endif
  2148         ],[
  2149         ],[
  2150         have_metal=yes
  2151         ])
  2152         CFLAGS="$save_CFLAGS"
  2153         AC_MSG_RESULT($have_metal)
  2154         if test x$have_metal = xyes; then
  2155             AC_DEFINE(SDL_VIDEO_METAL, 1, [ ])
  2156             if test x$enable_render = xyes -a x$enable_render_metal = xyes; then
  2157                 AC_DEFINE(SDL_VIDEO_RENDER_METAL, 1, [ ])
  2158                 SOURCES="$SOURCES $srcdir/src/render/metal/*.m"
  2159             fi
  2160             SUMMARY_video="${SUMMARY_video} metal"
  2161         else
  2162             enable_video_metal=no
  2163             enable_render_metal=no
  2164         fi
  2165     fi
  2166 }
  2167 
  2168 
  2169 dnl Find DirectFB
  2170 CheckDirectFB()
  2171 {
  2172     AC_ARG_ENABLE(video-directfb,
  2173 AS_HELP_STRING([--enable-video-directfb], [use DirectFB video driver [[default=no]]]),
  2174                   , enable_video_directfb=no)
  2175     if test x$enable_video = xyes -a x$enable_video_directfb = xyes; then
  2176         PKG_CHECK_MODULES([DIRECTFB], [directfb >= 1.0.0], video_directfb=yes, video_directfb=no)
  2177 
  2178         if test x$video_directfb = xyes; then
  2179             # SuSE 11.1 installs directfb-config without directfb-devel
  2180             save_CPPFLAGS="$CPPFLAGS"
  2181             CPPFLAGS="$CPPFLAGS $DIRECTFB_CFLAGS"
  2182             AC_CHECK_HEADER(directfb.h, have_directfb_hdr=yes, have_directfb_hdr=no)
  2183             CPPFLAGS="$save_CPPFLAGS"
  2184             video_directfb=$have_directfb_hdr
  2185         fi
  2186 
  2187         if test x$video_directfb = xyes; then
  2188             AC_ARG_ENABLE(directfb-shared,
  2189 AS_HELP_STRING([--enable-directfb-shared], [dynamically load directfb support [[default=yes]]]),
  2190                               , enable_directfb_shared=yes)
  2191 
  2192             AC_DEFINE(SDL_VIDEO_DRIVER_DIRECTFB, 1, [ ])
  2193             AC_DEFINE(SDL_VIDEO_RENDER_DIRECTFB, 1, [ ])
  2194             SOURCES="$SOURCES $srcdir/src/video/directfb/*.c"
  2195             EXTRA_CFLAGS="$EXTRA_CFLAGS $DIRECTFB_CFLAGS"
  2196 
  2197             AC_MSG_CHECKING(for directfb dynamic loading support)
  2198             directfb_shared=no
  2199             directfb_lib=[`find_lib "libdirectfb*.so.*" "$DIRECTFB_LIBS"`]
  2200             # | sed 's/.*\/\(.*\)/\1/; q'`]
  2201 AC_MSG_WARN("directfb $directfb_lib")
  2202             if test x$have_loadso != xyes && \
  2203                test x$enable_directfb_shared = xyes; then
  2204                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic directfb loading])
  2205             fi
  2206             if test x$have_loadso = xyes && \
  2207                test x$enable_directfb_shared = xyes && test x$directfb_lib != x; then
  2208                 directfb_shared=yes
  2209                 echo "-- $directfb_lib_spec -> $directfb_lib"
  2210                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_DIRECTFB_DYNAMIC, "$directfb_lib", [ ])
  2211                 SUMMARY_video="${SUMMARY_video} directfb(dynamic)"
  2212             else
  2213                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $DIRECTFB_LIBS"
  2214                 SUMMARY_video="${SUMMARY_video} directfb"
  2215             fi
  2216             AC_MSG_RESULT($directfb_shared)
  2217             SDL_CFLAGS="$SDL_CFLAGS $DIRECTFB_CFLAGS"
  2218             have_video=yes
  2219         fi
  2220     fi
  2221 }
  2222 
  2223 dnl Find KMSDRM
  2224 CheckKMSDRM()
  2225 {
  2226     AC_ARG_ENABLE(video-kmsdrm,
  2227 AS_HELP_STRING([--enable-video-kmsdrm], [use KMSDRM video driver [[default=no]]]),
  2228                   , enable_video_kmsdrm=no)
  2229 
  2230     if test x$enable_video = xyes -a x$enable_video_kmsdrm = xyes; then
  2231         video_kmsdrm=no
  2232 
  2233         PKG_CHECK_MODULES([LIBDRM], [libdrm >= 2.4.46], libdrm_avail=yes, libdrm_avail=no)
  2234         PKG_CHECK_MODULES([LIBGBM], [gbm >= 9.0.0], libgbm_avail=yes, libgbm_avail=no)
  2235 
  2236         if test x$libdrm_avail = xyes -a x$libgbm_avail = xyes; then
  2237             video_kmsdrm=yes
  2238         fi
  2239 
  2240         if test x$video_kmsdrm = xyes; then
  2241             AC_ARG_ENABLE(kmsdrm-shared,
  2242 AS_HELP_STRING([--enable-kmsdrm-shared], [dynamically load kmsdrm support [[default=yes]]]),
  2243                 , enable_kmsdrm_shared=yes)
  2244 
  2245             AC_DEFINE(SDL_VIDEO_DRIVER_KMSDRM, 1, [ ])
  2246             SOURCES="$SOURCES $srcdir/src/video/kmsdrm/*.c"
  2247             EXTRA_CFLAGS="$EXTRA_CFLAGS $LIBDRM_CFLAGS $LIBGBM_CFLAGS"
  2248 
  2249             AC_MSG_CHECKING(for kmsdrm dynamic loading support)
  2250             kmsdrm_shared=no
  2251             drm_lib=[`find_lib "libdrm.so.*" "$DRM_LIBS"`]
  2252             gbm_lib=[`find_lib "libgbm.so.*" "$DRM_LIBS"`]
  2253             if test x$have_loadso != xyes && \
  2254                test x$enable_kmsdrm_shared = xyes; then
  2255                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic kmsdrm loading])
  2256             fi
  2257             if test x$have_loadso = xyes && \
  2258                test x$enable_kmsdrm_shared = xyes && test x$drm_lib != x && test x$gbm_lib != x; then
  2259                 kmsdrm_shared=yes
  2260                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_KMSDRM_DYNAMIC, "$drm_lib", [ ])
  2261                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_KMSDRM_DYNAMIC_GBM, "$gbm_lib", [ ])
  2262                 AC_DEFINE_UNQUOTED(HAVE_KMSDRM_SHARED, "TRUE", [ ])
  2263                 SUMMARY_video="${SUMMARY_video} kmsdrm(dynamic)"
  2264             else
  2265                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $LIBDRM_LIBS $LIBGBM_LIBS"
  2266                 SUMMARY_video="${SUMMARY_video} kmsdrm"
  2267             fi
  2268             AC_MSG_RESULT($kmsdrm_shared)
  2269             have_video=yes
  2270         fi
  2271     fi
  2272 }
  2273 
  2274 dnl rcg04172001 Set up the Null video driver.
  2275 CheckDummyVideo()
  2276 {
  2277     AC_ARG_ENABLE(video-dummy,
  2278 AS_HELP_STRING([--enable-video-dummy], [use dummy video driver [[default=yes]]]),
  2279                   , enable_video_dummy=yes)
  2280     if test x$enable_video_dummy = xyes; then
  2281         AC_DEFINE(SDL_VIDEO_DRIVER_DUMMY, 1, [ ])
  2282         SOURCES="$SOURCES $srcdir/src/video/dummy/*.c"
  2283         have_video=yes
  2284         SUMMARY_video="${SUMMARY_video} dummy"
  2285     fi
  2286 }
  2287 
  2288 dnl Set up the QNX video driver if enabled
  2289 CheckQNXVideo()
  2290 {
  2291     if test x$enable_video = xyes; then
  2292         AC_DEFINE(SDL_VIDEO_DRIVER_QNX, 1, [ ])
  2293         SOURCES="$SOURCES $srcdir/src/video/qnx/*.c"
  2294         have_video=yes
  2295         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lscreen -lEGL -lGLESv2"
  2296         SUMMARY_video="${SUMMARY_video} qnx"
  2297     fi
  2298 }
  2299 
  2300 dnl Set up the QNX audio driver if enabled
  2301 CheckQNXAudio()
  2302 {
  2303     if test x$enable_audio = xyes; then
  2304         AC_DEFINE(SDL_AUDIO_DRIVER_QSA, 1, [ ])
  2305         SOURCES="$SOURCES $srcdir/src/audio/qsa/*.c"
  2306         have_audio=yes
  2307         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lasound"
  2308         SUMMARY_audio="${SUMMARY_audio} qsa"
  2309     fi
  2310 }
  2311 
  2312 dnl Check to see if OpenGL support is desired
  2313 AC_ARG_ENABLE(video-opengl,
  2314 AS_HELP_STRING([--enable-video-opengl], [include OpenGL support [[default=yes]]]),
  2315               , enable_video_opengl=yes)
  2316 
  2317 dnl Find OpenGL
  2318 CheckOpenGLX11()
  2319 {
  2320     if test x$enable_video = xyes -a x$enable_video_opengl = xyes; then
  2321         AC_MSG_CHECKING(for OpenGL (GLX) support)
  2322         video_opengl=no
  2323         AC_TRY_COMPILE([
  2324          #include <GL/gl.h>
  2325          #include <GL/glx.h>
  2326         ],[
  2327         ],[
  2328         video_opengl=yes
  2329         ])
  2330         AC_MSG_RESULT($video_opengl)
  2331         if test x$video_opengl = xyes; then
  2332             AC_DEFINE(SDL_VIDEO_OPENGL, 1, [ ])
  2333             AC_DEFINE(SDL_VIDEO_OPENGL_GLX, 1, [ ])
  2334             AC_DEFINE(SDL_VIDEO_RENDER_OGL, 1, [ ])
  2335             SUMMARY_video="${SUMMARY_video} opengl"
  2336         fi
  2337     fi
  2338 }
  2339 
  2340 dnl Check to see if OpenGL ES support is desired
  2341 AC_ARG_ENABLE(video-opengles,
  2342 AS_HELP_STRING([--enable-video-opengles], [include OpenGL ES support [[default=yes]]]),
  2343               , enable_video_opengles=yes)
  2344 AC_ARG_ENABLE(video-opengles1,
  2345 AS_HELP_STRING([--enable-video-opengles1], [include OpenGL ES 1.1 support [[default=yes]]]),
  2346               , enable_video_opengles1=yes)
  2347 AC_ARG_ENABLE(video-opengles2,
  2348 AS_HELP_STRING([--enable-video-opengles2], [include OpenGL ES 2.0 support [[default=yes]]]),
  2349               , enable_video_opengles2=yes)
  2350 
  2351 dnl Find OpenGL ES
  2352 CheckOpenGLESX11()
  2353 {
  2354     if test x$enable_video = xyes -a x$enable_video_opengles = xyes; then
  2355         AC_MSG_CHECKING(for EGL support)
  2356         video_opengl_egl=no
  2357         AC_TRY_COMPILE([
  2358           #define LINUX
  2359           #define EGL_API_FB
  2360           #define MESA_EGL_NO_X11_HEADERS
  2361           #include <EGL/egl.h>
  2362           #include <EGL/eglext.h>
  2363         ],[
  2364         ],[
  2365         video_opengl_egl=yes
  2366         ])
  2367         AC_MSG_RESULT($video_opengl_egl)
  2368         if test x$video_opengl_egl = xyes; then
  2369             AC_DEFINE(SDL_VIDEO_OPENGL_EGL, 1, [ ])
  2370         fi
  2371         
  2372         if test x$enable_video_opengles1 = xyes; then
  2373             AC_MSG_CHECKING(for OpenGL ES v1 headers)
  2374             video_opengles_v1=no
  2375             AC_TRY_COMPILE([
  2376              #include <GLES/gl.h>
  2377              #include <GLES/glext.h>
  2378             ],[
  2379             ],[
  2380             video_opengles_v1=yes
  2381             ])
  2382             AC_MSG_RESULT($video_opengles_v1)
  2383             if test x$video_opengles_v1 = xyes; then
  2384                 AC_DEFINE(SDL_VIDEO_OPENGL_ES, 1, [ ])
  2385                 AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES, 1, [ ])
  2386                 SUMMARY_video="${SUMMARY_video} opengl_es1"
  2387             fi
  2388         fi
  2389         
  2390         if test x$enable_video_opengles2 = xyes; then
  2391             AC_MSG_CHECKING(for OpenGL ES v2 headers)
  2392             video_opengles_v2=no
  2393             AC_TRY_COMPILE([
  2394              #include <GLES2/gl2.h>
  2395              #include <GLES2/gl2ext.h>
  2396             ],[
  2397             ],[
  2398             video_opengles_v2=yes
  2399             ])
  2400             AC_MSG_RESULT($video_opengles_v2)
  2401             if test x$video_opengles_v2 = xyes; then
  2402                 AC_DEFINE(SDL_VIDEO_OPENGL_ES2, 1, [ ])
  2403                 AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES2, 1, [ ])
  2404                 SUMMARY_video="${SUMMARY_video} opengl_es2"
  2405             fi
  2406         fi
  2407     fi
  2408 }
  2409 
  2410 dnl Check for Windows OpenGL
  2411 CheckWINDOWSGL()
  2412 {
  2413     if test x$enable_video = xyes -a x$enable_video_opengl = xyes; then
  2414         AC_DEFINE(SDL_VIDEO_OPENGL, 1, [ ])
  2415         AC_DEFINE(SDL_VIDEO_OPENGL_WGL, 1, [ ])
  2416         AC_DEFINE(SDL_VIDEO_RENDER_OGL, 1, [ ])
  2417         SUMMARY_video="${SUMMARY_video} opengl"
  2418     fi
  2419 }
  2420 
  2421 dnl Check for Windows OpenGL
  2422 CheckWINDOWSGLES()
  2423 {
  2424     if test x$enable_video = xyes -a x$enable_video_opengles = xyes; then
  2425 
  2426         AC_MSG_CHECKING(for EGL support)
  2427         video_opengl_egl=no
  2428         AC_TRY_COMPILE([
  2429          #include <EGL/egl.h>
  2430         ],[
  2431         ],[
  2432         video_opengl_egl=yes
  2433         ])
  2434         AC_MSG_RESULT($video_opengl_egl)
  2435         if test x$video_opengl_egl = xyes; then
  2436             AC_DEFINE(SDL_VIDEO_OPENGL, 1, [ ])
  2437             AC_DEFINE(SDL_VIDEO_OPENGL_EGL, 1, [ ])
  2438             SUMMARY_video="${SUMMARY_video} opengl_es1"
  2439         fi
  2440        
  2441         AC_MSG_CHECKING(for OpenGL ES v2 headers)
  2442         video_opengles_v2=no
  2443         AC_TRY_COMPILE([
  2444          #include <GLES2/gl2.h>
  2445          #include <GLES2/gl2ext.h>
  2446         ],[
  2447         ],[
  2448         video_opengles_v2=yes
  2449         ])
  2450         AC_MSG_RESULT($video_opengles_v2)
  2451         if test x$video_opengles_v2 = xyes; then
  2452             AC_DEFINE(SDL_VIDEO_OPENGL, 1, [ ])
  2453             AC_DEFINE(SDL_VIDEO_OPENGL_ES2, 1, [ ])
  2454             AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES2, 1, [ ])
  2455             SUMMARY_video="${SUMMARY_video} opengl_es2"
  2456         fi
  2457     fi
  2458 }
  2459 
  2460 dnl Check for Haiku OpenGL
  2461 CheckHaikuGL()
  2462 {
  2463     if test x$enable_video = xyes -a x$enable_video_opengl = xyes; then
  2464         AC_DEFINE(SDL_VIDEO_OPENGL, 1, [ ])
  2465         AC_DEFINE(SDL_VIDEO_OPENGL_HAIKU, 1, [ ])
  2466         AC_DEFINE(SDL_VIDEO_RENDER_OGL, 1, [ ])
  2467         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lGL"
  2468         SUMMARY_video="${SUMMARY_video} opengl"
  2469     fi
  2470 }
  2471 
  2472 dnl Check for MacOS OpenGL
  2473 CheckMacGL()
  2474 {
  2475     if test x$enable_video = xyes -a x$enable_video_opengl = xyes; then
  2476         AC_DEFINE(SDL_VIDEO_OPENGL, 1, [ ])
  2477         AC_DEFINE(SDL_VIDEO_OPENGL_CGL, 1, [ ])
  2478         AC_DEFINE(SDL_VIDEO_RENDER_OGL, 1, [ ])
  2479         SUMMARY_video="${SUMMARY_video} opengl"
  2480     fi
  2481 }
  2482 
  2483 dnl Check for MacOS OpenGLES
  2484 CheckMacGLES()
  2485 {
  2486     if test x$enable_video = xyes -a x$enable_video_opengles = xyes; then
  2487         video_opengl_egl=yes
  2488         AC_DEFINE(SDL_VIDEO_OPENGL_EGL, 1, [ ])
  2489         video_opengles_v2=yes
  2490         AC_DEFINE(SDL_VIDEO_OPENGL_ES2, 1, [ ])
  2491         AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES2, 1, [ ])
  2492         SUMMARY_video="${SUMMARY_video} opengl_es2"
  2493     fi
  2494 }
  2495 
  2496 CheckEmscriptenGLES()
  2497 {
  2498     if test x$enable_video = xyes -a x$enable_video_opengles = xyes; then
  2499         AC_MSG_CHECKING(for EGL support)
  2500         video_opengl_egl=no
  2501         AC_TRY_COMPILE([
  2502          #include <EGL/egl.h>
  2503         ],[
  2504         ],[
  2505         video_opengl_egl=yes
  2506         ])
  2507         AC_MSG_RESULT($video_opengl_egl)
  2508         if test x$video_opengl_egl = xyes; then
  2509             AC_DEFINE(SDL_VIDEO_OPENGL_EGL, 1, [ ])
  2510         fi
  2511 
  2512         AC_MSG_CHECKING(for OpenGL ES v2 headers)
  2513         video_opengles_v2=no
  2514         AC_TRY_COMPILE([
  2515          #include <GLES2/gl2.h>
  2516          #include <GLES2/gl2ext.h>
  2517         ],[
  2518         ],[
  2519         video_opengles_v2=yes
  2520         ])
  2521         AC_MSG_RESULT($video_opengles_v2)
  2522         if test x$video_opengles_v2 = xyes; then
  2523             AC_DEFINE(SDL_VIDEO_OPENGL_ES2, 1, [ ])
  2524             AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES2, 1, [ ])
  2525             SUMMARY_video="${SUMMARY_video} opengl_es2"
  2526         fi
  2527     fi
  2528 }
  2529 
  2530 dnl Check to see if Vulkan support is desired
  2531 AC_ARG_ENABLE(video-vulkan,
  2532 AS_HELP_STRING([--enable-video-vulkan], [include Vulkan support [[default=yes]]]),
  2533               , enable_video_vulkan=yes)
  2534 
  2535 dnl Find Vulkan Header
  2536 CheckVulkan()
  2537 {
  2538     if test x$enable_video = xyes -a x$enable_video_vulkan = xyes; then
  2539         case "$host" in
  2540             *-*-android*)
  2541                 AC_TRY_COMPILE([
  2542                   #if defined(__ARM_ARCH) && __ARM_ARCH < 7
  2543                   #error Vulkan doesn't work on this configuration
  2544                   #endif
  2545                 ],[
  2546                 ],[
  2547                 ],[
  2548                     enable_video_vulkan=no
  2549                 ])
  2550                 ;;
  2551             *-*-darwin*)
  2552                 save_CFLAGS="$CFLAGS"
  2553                 dnl Work around that we don't have Objective-C support in autoconf
  2554                 CFLAGS="$CFLAGS -x objective-c"
  2555                 AC_TRY_COMPILE([
  2556                   #include <Cocoa/Cocoa.h>
  2557                   #include <Metal/Metal.h>
  2558                   #include <QuartzCore/CAMetalLayer.h>
  2559 
  2560                   #if !TARGET_CPU_X86_64
  2561                   #error Vulkan doesn't work on this configuration
  2562                   #endif
  2563                 ],[
  2564                 ],[
  2565                 ],[
  2566                     enable_video_vulkan=no
  2567                 ])
  2568                 CFLAGS="$save_CFLAGS"
  2569                 ;;
  2570             *)
  2571                 ;;
  2572         esac
  2573         if test x$enable_video_vulkan = xno; then
  2574             # For reasons I am totally unable to see, I get an undefined macro error if
  2575             # I put this in the AC_TRY_COMPILE.
  2576             AC_MSG_WARN([Vulkan does not work on this configuration.])
  2577         fi
  2578     fi
  2579     if test x$enable_video_vulkan = xyes; then
  2580         AC_DEFINE(SDL_VIDEO_VULKAN, 1, [ ])
  2581         SUMMARY_video="${SUMMARY_video} vulkan"
  2582     fi
  2583 }
  2584 
  2585 dnl See if we can use the new unified event interface in Linux 2.4
  2586 CheckInputEvents()
  2587 {
  2588     dnl Check for Linux 2.4 unified input event interface support
  2589         AC_MSG_CHECKING(for Linux 2.4 unified input interface)
  2590         use_input_events=no
  2591         AC_TRY_COMPILE([
  2592           #include <linux/input.h>
  2593         ],[
  2594           #ifndef EVIOCGNAME
  2595           #error EVIOCGNAME() ioctl not available
  2596           #endif
  2597         ],[
  2598         use_input_events=yes
  2599         ])
  2600         AC_MSG_RESULT($use_input_events)
  2601         if test x$use_input_events = xyes; then
  2602             AC_DEFINE(SDL_INPUT_LINUXEV, 1, [ ])
  2603             SUMMARY_input="${SUMMARY_input} linuxev"
  2604         fi
  2605 }
  2606 
  2607 dnl See if we can use the kernel kd.h header
  2608 CheckInputKD()
  2609 {
  2610 
  2611     AC_MSG_CHECKING(for Linux kd.h)
  2612     use_input_kd=no
  2613     AC_TRY_COMPILE([
  2614       #include <linux/kd.h>
  2615       #include <linux/keyboard.h>
  2616     ],[
  2617         struct kbentry kbe;
  2618         kbe.kb_table = KG_CTRL;
  2619         ioctl(0, KDGKBENT, &kbe);
  2620     ],[
  2621     use_input_kd=yes
  2622     ])
  2623     AC_MSG_RESULT($use_input_kd)
  2624     if test x$use_input_kd = xyes; then
  2625         AC_DEFINE(SDL_INPUT_LINUXKD, 1, [ ])
  2626         SUMMARY_input="${SUMMARY_input} linuxkd"
  2627     fi
  2628 }
  2629 
  2630 dnl See if the platform offers libudev for device enumeration and hotplugging.
  2631 CheckLibUDev()
  2632 {
  2633     AC_ARG_ENABLE(libudev,
  2634 AS_HELP_STRING([--enable-libudev], [enable libudev support [[default=yes]]]),
  2635                         , enable_libudev=yes)
  2636     if test x$enable_libudev = xyes; then
  2637         AC_CHECK_HEADER(libudev.h,
  2638                         have_libudev_h_hdr=yes,
  2639                         have_libudev_h_hdr=no)
  2640         if test x$have_libudev_h_hdr = xyes; then
  2641             AC_DEFINE(HAVE_LIBUDEV_H, 1, [ ])
  2642 
  2643             udev_lib=[`find_lib "libudev.so.*" "" | sed 's/.*\/\(.*\)/\1/; q'`]
  2644             if test x$udev_lib != x; then
  2645                 echo "-- dynamic udev -> $udev_lib"
  2646                 AC_DEFINE_UNQUOTED(SDL_UDEV_DYNAMIC, "$udev_lib", [ ])
  2647             fi
  2648         fi
  2649     fi
  2650 }
  2651 
  2652 dnl See if the platform offers libdbus for various IPC techniques.
  2653 CheckDBus()
  2654 {
  2655     AC_ARG_ENABLE(dbus,
  2656 AS_HELP_STRING([--enable-dbus], [enable D-Bus support [[default=yes]]]),
  2657                         , enable_dbus=yes)
  2658     if test x$enable_dbus = xyes; then
  2659         PKG_CHECK_MODULES([DBUS], [dbus-1], have_dbus=yes, have_dbus=no)
  2660         save_CFLAGS="$CFLAGS"
  2661         CFLAGS="$save_CFLAGS $DBUS_CFLAGS"
  2662         AC_CHECK_HEADER(dbus/dbus.h,
  2663                         have_dbus_dbus_h_hdr=yes,
  2664                         have_dbus_dbus_h_hdr=no)
  2665         CFLAGS="$save_CFLAGS"
  2666         if test x$have_dbus_dbus_h_hdr = xyes; then
  2667             AC_DEFINE(HAVE_DBUS_DBUS_H, 1, [ ])
  2668             EXTRA_CFLAGS="$EXTRA_CFLAGS $DBUS_CFLAGS"
  2669             SOURCES="$SOURCES $srcdir/src/core/linux/SDL_dbus.c"
  2670         fi
  2671     fi
  2672 }
  2673 
  2674 dnl See if the platform wanna IME support.
  2675 CheckIME()
  2676 {
  2677     AC_ARG_ENABLE(ime,
  2678 AS_HELP_STRING([--enable-ime], [enable IME support [[default=yes]]]),
  2679                   , enable_ime=yes)
  2680     if test x$enable_ime = xyes; then
  2681         AC_DEFINE(SDL_USE_IME, 1, [ ])
  2682         SOURCES="$SOURCES $srcdir/src/core/linux/SDL_ime.c"
  2683     fi
  2684 }
  2685 
  2686 dnl See if the platform has libibus IME support.
  2687 CheckIBus()
  2688 {
  2689     AC_ARG_ENABLE(ibus,
  2690 AS_HELP_STRING([--enable-ibus], [enable IBus support [[default=yes]]]),
  2691                   , enable_ibus=yes)
  2692     if test x$enable_ibus = xyes; then
  2693         PKG_CHECK_MODULES([IBUS], [ibus-1.0], have_ibus=yes, have_ibus=no)
  2694         save_CFLAGS="$CFLAGS"
  2695         CFLAGS="$save_CFLAGS $IBUS_CFLAGS"
  2696         AC_CHECK_HEADER(ibus-1.0/ibus.h,
  2697                         have_ibus_ibus_h_hdr=yes,
  2698                         have_ibus_ibus_h_hdr=no)
  2699         AC_CHECK_HEADER(sys/inotify.h,
  2700                         have_inotify_inotify_h_hdr=yes,
  2701                         have_inotify_inotify_h_hdr=no)
  2702         CFLAGS="$save_CFLAGS"
  2703         if test x$have_ibus_ibus_h_hdr = xyes; then
  2704             if test x$enable_ime != xyes; then
  2705                 AC_MSG_WARN([IME support is required for IBus.])
  2706                 have_ibus_ibus_h_hdr=no
  2707             elif test x$enable_dbus != xyes; then
  2708                 AC_MSG_WARN([DBus support is required for IBus.])
  2709                 have_ibus_ibus_h_hdr=no
  2710             elif test x$have_inotify_inotify_h_hdr != xyes; then
  2711                 AC_MSG_WARN([INotify support is required for IBus.])
  2712                 have_ibus_ibus_h_hdr=no
  2713             else
  2714                 AC_DEFINE(HAVE_IBUS_IBUS_H, 1, [ ])
  2715                 EXTRA_CFLAGS="$EXTRA_CFLAGS $IBUS_CFLAGS"
  2716                 SOURCES="$SOURCES $srcdir/src/core/linux/SDL_ibus.c"
  2717             fi
  2718         fi
  2719     fi
  2720 }
  2721 
  2722 dnl See if the platform has fcitx IME support.
  2723 CheckFcitx()
  2724 {
  2725     AC_ARG_ENABLE(fcitx,
  2726 AS_HELP_STRING([--enable-fcitx], [enable fcitx support [[default=yes]]]),
  2727                   , enable_fcitx=yes)
  2728     if test x$enable_fcitx = xyes; then
  2729         PKG_CHECK_MODULES([FCITX], [fcitx], have_fcitx=yes, have_fcitx=no)
  2730         CFLAGS="$CFLAGS $FCITX_CFLAGS"
  2731         AC_CHECK_HEADER(fcitx/frontend.h,
  2732                         have_fcitx_frontend_h_hdr=yes,
  2733                         have_fcitx_frontend_h_hdr=no)
  2734         CFLAGS="$save_CFLAGS"
  2735         if test x$have_fcitx_frontend_h_hdr = xyes; then
  2736             if test x$enable_ime != xyes; then
  2737                 AC_MSG_WARN([IME support is required for fcitx.])
  2738                 have_fcitx_frontend_h_hdr=no
  2739             elif test x$enable_dbus != xyes; then
  2740                 AC_MSG_WARN([DBus support is required for fcitx.])
  2741                 have_fcitx_frontend_h_hdr=no
  2742             else
  2743                 AC_DEFINE(HAVE_FCITX_FRONTEND_H, 1, [ ])
  2744                 EXTRA_CFLAGS="$EXTRA_CFLAGS $FCITX_CFLAGS"
  2745                 SOURCES="$SOURCES $srcdir/src/core/linux/SDL_fcitx.c"
  2746             fi
  2747         fi
  2748     fi
  2749 }
  2750 
  2751 dnl See if we can use the Touchscreen input library
  2752 CheckTslib()
  2753 {
  2754     AC_ARG_ENABLE(input-tslib,
  2755 AS_HELP_STRING([--enable-input-tslib], [use the Touchscreen library for input [[default=yes]]]),
  2756                   , enable_input_tslib=yes)
  2757     if test x$enable_input_tslib = xyes; then
  2758         AC_MSG_CHECKING(for Touchscreen library support)
  2759         enable_input_tslib=no
  2760         AC_TRY_COMPILE([
  2761           #include "tslib.h"
  2762         ],[
  2763         ],[
  2764         enable_input_tslib=yes
  2765         ])
  2766         AC_MSG_RESULT($enable_input_tslib)
  2767         if test x$enable_input_tslib = xyes; then
  2768             AC_DEFINE(SDL_INPUT_TSLIB, 1, [ ])
  2769             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lts"
  2770             SUMMARY_input="${SUMMARY_input} ts"
  2771         fi
  2772     fi
  2773 }
  2774 
  2775 dnl See what type of thread model to use on Linux and Solaris
  2776 CheckPTHREAD()
  2777 {
  2778     dnl Check for pthread support
  2779     AC_ARG_ENABLE(pthreads,
  2780 AS_HELP_STRING([--enable-pthreads], [use POSIX threads for multi-threading [[default=yes]]]),
  2781                   , enable_pthreads=yes)
  2782     dnl This is used on Linux for glibc binary compatibility (Doh!)
  2783     AC_ARG_ENABLE(pthread-sem,
  2784 AS_HELP_STRING([--enable-pthread-sem], [use pthread semaphores [[default=yes]]]),
  2785                   , enable_pthread_sem=yes)
  2786     case "$host" in
  2787          *-*-android*)
  2788             pthread_cflags="-D_REENTRANT -D_THREAD_SAFE"
  2789             pthread_lib=""
  2790             ;;
  2791         *-*-linux*|*-*-uclinux*)
  2792             pthread_cflags="-D_REENTRANT"
  2793             pthread_lib="-lpthread"
  2794             ;;
  2795         *-*-bsdi*)
  2796             pthread_cflags="-D_REENTRANT -D_THREAD_SAFE"
  2797             pthread_lib=""
  2798             ;;
  2799         *-*-darwin*)
  2800             pthread_cflags="-D_THREAD_SAFE"
  2801 # causes Carbon.p complaints?
  2802 #            pthread_cflags="-D_REENTRANT -D_THREAD_SAFE"
  2803             ;;
  2804         *-*-freebsd*|*-*-dragonfly*)
  2805             pthread_cflags="-D_REENTRANT -D_THREAD_SAFE"
  2806             pthread_lib="-pthread"
  2807             ;;
  2808         *-*-netbsd*)
  2809             pthread_cflags="-D_REENTRANT -D_THREAD_SAFE"
  2810             pthread_lib="-lpthread"
  2811             ;;
  2812         *-*-openbsd*)
  2813             pthread_cflags="-D_REENTRANT"
  2814             pthread_lib="-pthread"
  2815             ;;
  2816         *-*-solaris2.9)
  2817             # From Solaris 9+, posix4's preferred name is rt.
  2818             pthread_cflags="-D_REENTRANT"
  2819             pthread_lib="-lpthread -lrt"
  2820             ;;
  2821         *-*-solaris2.10)
  2822             # Solaris 10+ merged pthread into libc.
  2823             pthread_cflags="-D_REENTRANT"
  2824             pthread_lib="-lrt"
  2825             ;;
  2826         *-*-solaris*)
  2827             # Solaris 11+ merged rt into libc.
  2828             pthread_cflags="-D_REENTRANT"
  2829             pthread_lib=""
  2830             ;;
  2831         *-*-sysv5*)
  2832             pthread_cflags="-D_REENTRANT -Kthread"
  2833             pthread_lib=""
  2834             ;;
  2835         *-*-aix*)
  2836             pthread_cflags="-D_REENTRANT -mthreads"
  2837             pthread_lib="-lpthread"
  2838             ;;
  2839         *-*-hpux11*)
  2840             pthread_cflags="-D_REENTRANT"
  2841             pthread_lib="-L/usr/lib -lpthread"
  2842             ;;
  2843         *-*-haiku*)
  2844             pthread_cflags="-D_REENTRANT"
  2845             pthread_lib=""
  2846             ;;
  2847         *-*-nto*)
  2848             pthread_cflags="-D_REENTRANT"
  2849             pthread_lib=""
  2850             ;;
  2851         *)
  2852             pthread_cflags="-D_REENTRANT"
  2853             pthread_lib="-lpthread"
  2854             ;;
  2855     esac
  2856     if test x$enable_threads = xyes -a x$enable_pthreads = xyes; then
  2857         # Save the original compiler flags and libraries
  2858         ac_save_cflags="$CFLAGS"; ac_save_libs="$LIBS"
  2859         # Add the pthread compiler flags and libraries
  2860         CFLAGS="$CFLAGS $pthread_cflags"; LIBS="$LIBS $pthread_lib"
  2861         # Check to see if we have pthread support on this system
  2862         AC_MSG_CHECKING(for pthreads)
  2863         use_pthreads=no
  2864         AC_TRY_LINK([
  2865          #include <pthread.h>
  2866         ],[
  2867          pthread_attr_t type;
  2868          pthread_attr_init(&type);
  2869         ],[
  2870         use_pthreads=yes
  2871         ])
  2872         AC_MSG_RESULT($use_pthreads)
  2873         # Restore the compiler flags and libraries
  2874         CFLAGS="$ac_save_cflags"; LIBS="$ac_save_libs"
  2875 
  2876         # Do futher testing if we have pthread support...
  2877         if test x$use_pthreads = xyes; then
  2878             AC_DEFINE(SDL_THREAD_PTHREAD, 1, [ ])
  2879             EXTRA_CFLAGS="$EXTRA_CFLAGS $pthread_cflags"
  2880             EXTRA_LDFLAGS="$EXTRA_LDFLAGS $pthread_lib"
  2881             SDL_CFLAGS="$SDL_CFLAGS $pthread_cflags"
  2882 
  2883             # Save the original compiler flags and libraries
  2884             ac_save_cflags="$CFLAGS"; ac_save_libs="$LIBS"
  2885             # Add the pthread compiler flags and libraries
  2886             CFLAGS="$CFLAGS $pthread_cflags"; LIBS="$LIBS $pthread_lib"
  2887 
  2888             # Check to see if recursive mutexes are available
  2889             AC_MSG_CHECKING(for recursive mutexes)
  2890             has_recursive_mutexes=no
  2891             if test x$has_recursive_mutexes = xno; then
  2892                 AC_TRY_LINK([
  2893                   #define _GNU_SOURCE 1
  2894                   #include <pthread.h>
  2895                 ],[
  2896                   pthread_mutexattr_t attr;
  2897                   pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
  2898                 ],[
  2899                 has_recursive_mutexes=yes
  2900                 AC_DEFINE(SDL_THREAD_PTHREAD_RECURSIVE_MUTEX, 1, [ ])
  2901                 ])
  2902             fi
  2903             if test x$has_recursive_mutexes = xno; then
  2904                 AC_TRY_LINK([
  2905                   #define _GNU_SOURCE 1
  2906                   #include <pthread.h>
  2907                 ],[
  2908                   pthread_mutexattr_t attr;
  2909                   pthread_mutexattr_setkind_np(&attr, PTHREAD_MUTEX_RECURSIVE_NP);
  2910                 ],[
  2911                 has_recursive_mutexes=yes
  2912                 AC_DEFINE(SDL_THREAD_PTHREAD_RECURSIVE_MUTEX_NP, 1, [ ])
  2913                 ])
  2914             fi
  2915             AC_MSG_RESULT($has_recursive_mutexes)
  2916 
  2917             # Check to see if pthread semaphore support is missing
  2918             if test x$enable_pthread_sem = xyes; then
  2919                 AC_MSG_CHECKING(for pthread semaphores)
  2920                 have_pthread_sem=no
  2921                 AC_TRY_COMPILE([
  2922                   #include <pthread.h>
  2923                   #include <semaphore.h>
  2924                 ],[
  2925                 ],[
  2926                 have_pthread_sem=yes
  2927                 ])
  2928                 AC_MSG_RESULT($have_pthread_sem)
  2929             fi
  2930             if test x$have_pthread_sem = xyes; then
  2931                 AC_MSG_CHECKING(for sem_timedwait)
  2932                 have_sem_timedwait=no
  2933                 AC_TRY_LINK([
  2934                   #include <pthread.h>
  2935                   #include <semaphore.h>
  2936                 ],[
  2937                   sem_timedwait(NULL, NULL);
  2938                 ],[
  2939                 have_sem_timedwait=yes
  2940                 AC_DEFINE([HAVE_SEM_TIMEDWAIT], 1, [ ])
  2941                 ])
  2942                 AC_MSG_RESULT($have_sem_timedwait)
  2943             fi
  2944 
  2945             AC_CHECK_HEADER(pthread_np.h, have_pthread_np_h=yes, have_pthread_np_h=no, [ #include <pthread.h> ])
  2946             if test x$have_pthread_np_h = xyes; then
  2947                 AC_DEFINE(HAVE_PTHREAD_NP_H, 1, [ ])
  2948             fi
  2949 
  2950             # Check to see if pthread naming is available
  2951             AC_MSG_CHECKING(for pthread_setname_np)
  2952             AC_TRY_LINK_FUNC(pthread_setname_np, [
  2953               has_pthread_setname_np=yes
  2954               AC_DEFINE(HAVE_PTHREAD_SETNAME_NP, 1, [ ])
  2955             ],[
  2956               has_pthread_setname_np=no
  2957             ])
  2958             AC_MSG_RESULT($has_pthread_setname_np)
  2959 
  2960             AC_MSG_CHECKING(for pthread_set_name_np)
  2961             AC_TRY_LINK_FUNC(pthread_set_name_np, [
  2962               has_pthread_set_name_np=yes
  2963               AC_DEFINE(HAVE_PTHREAD_SET_NAME_NP, 1, [ ])
  2964             ],[
  2965               has_pthread_set_name_np=no
  2966             ])
  2967             AC_MSG_RESULT($has_pthread_set_name_np)
  2968 
  2969             # Restore the compiler flags and libraries
  2970             CFLAGS="$ac_save_cflags"; LIBS="$ac_save_libs"
  2971 
  2972             # Basic thread creation functions
  2973             SOURCES="$SOURCES $srcdir/src/thread/pthread/SDL_systhread.c"
  2974 
  2975             # Semaphores
  2976             # We can fake these with mutexes and condition variables if necessary
  2977             if test x$have_pthread_sem = xyes; then
  2978                 SOURCES="$SOURCES $srcdir/src/thread/pthread/SDL_syssem.c"
  2979             else
  2980                 SOURCES="$SOURCES $srcdir/src/thread/generic/SDL_syssem.c"
  2981             fi
  2982 
  2983             # Mutexes
  2984             # We can fake these with semaphores if necessary
  2985             SOURCES="$SOURCES $srcdir/src/thread/pthread/SDL_sysmutex.c"
  2986 
  2987             # Condition variables
  2988             # We can fake these with semaphores and mutexes if necessary
  2989             SOURCES="$SOURCES $srcdir/src/thread/pthread/SDL_syscond.c"
  2990 
  2991             # Thread local storage
  2992             SOURCES="$SOURCES $srcdir/src/thread/pthread/SDL_systls.c"
  2993 
  2994             have_threads=yes
  2995         fi
  2996     fi
  2997 }
  2998 
  2999 dnl Determine whether the compiler can produce Windows executables
  3000 CheckWINDOWS()
  3001 {
  3002     AC_MSG_CHECKING(Windows compiler)
  3003     have_win32_gcc=no
  3004     AC_TRY_COMPILE([
  3005      #include <windows.h>
  3006     ],[
  3007     ],[
  3008     have_win32_gcc=yes
  3009     ])
  3010     AC_MSG_RESULT($have_win32_gcc)
  3011     if test x$have_win32_gcc != xyes; then
  3012        AC_MSG_ERROR([
  3013 *** Your compiler ($CC) does not produce Windows executables!
  3014        ])
  3015     fi
  3016 
  3017     AC_MSG_CHECKING(Windows CE)
  3018     have_wince=no
  3019     AC_TRY_COMPILE([
  3020 #if !defined(_WIN32_WCE) && !defined(__MINGW32CE__)
  3021 #error This is not Windows CE
  3022 #endif
  3023     ],[
  3024     ],[
  3025     have_wince=yes
  3026        AC_MSG_ERROR([
  3027 *** Sorry, Windows CE is no longer supported.
  3028        ])
  3029     ])
  3030     AC_MSG_RESULT($have_wince)
  3031 
  3032     # This fixes Windows stack alignment with newer GCC
  3033     CheckStackBoundary
  3034 }
  3035 
  3036 dnl Find the DirectX includes and libraries
  3037 CheckDIRECTX()
  3038 {
  3039     AC_ARG_ENABLE(directx,
  3040 AS_HELP_STRING([--enable-directx], [use DirectX for Windows audio/video [[default=yes]]]),
  3041                   , enable_directx=yes)
  3042     if test x$enable_directx = xyes; then
  3043         AC_CHECK_HEADER(d3d9.h, have_d3d=yes)
  3044         AC_CHECK_HEADER(d3d11_1.h, have_d3d11=yes)
  3045         AC_CHECK_HEADER(ddraw.h, have_ddraw=yes)
  3046         AC_CHECK_HEADER(dsound.h, have_dsound=yes)
  3047         AC_CHECK_HEADER(dinput.h, have_dinput=yes)
  3048         AC_CHECK_HEADER(dxgi.h, have_dxgi=yes)
  3049         AC_CHECK_HEADER(xinput.h, have_xinput=yes)
  3050         AC_TRY_COMPILE([
  3051 #include <windows.h>
  3052 #include <xinput.h>
  3053 XINPUT_GAMEPAD_EX x1;
  3054         ],[],[have_xinput_gamepadex=yes])
  3055         AC_TRY_COMPILE([
  3056 #include <windows.h>
  3057 #include <xinput.h>
  3058 XINPUT_STATE_EX s1;
  3059         ],[],[have_xinput_stateex=yes])
  3060 
  3061         if test x$have_ddraw = xyes; then
  3062             AC_DEFINE(HAVE_DDRAW_H, 1, [ ])
  3063         fi
  3064         if test x$have_dinput = xyes; then
  3065             AC_DEFINE(HAVE_DINPUT_H, 1, [ ])
  3066         fi
  3067         if test x$have_dsound = xyes; then
  3068             AC_DEFINE(HAVE_DSOUND_H, 1, [ ])
  3069         fi
  3070         if test x$have_dxgi = xyes; then
  3071             AC_DEFINE(HAVE_DXGI_H, 1, [ ])
  3072         fi
  3073         if test x$have_xinput = xyes; then
  3074             AC_DEFINE(HAVE_XINPUT_H, 1, [ ])
  3075         fi
  3076         if test x$have_xinput_gamepadex = xyes; then
  3077             AC_DEFINE(HAVE_XINPUT_GAMEPAD_EX, 1, [ ])
  3078         fi
  3079         if test x$have_xinput_stateex = xyes; then
  3080             AC_DEFINE(HAVE_XINPUT_STATE_EX, 1, [ ])
  3081         fi
  3082 
  3083         # FIXME: latest Cygwin finds dinput headers, but we die on other win32 headers.
  3084         # FIXME:  ...so force it off for now.
  3085         case "$host" in
  3086             *-*-cygwin*)
  3087             have_dinput=false
  3088             ;;
  3089         esac
  3090     fi
  3091 
  3092     AC_CHECK_HEADER(mmdeviceapi.h, have_wasapi=yes)
  3093     if test x$have_wasapi = xyes; then
  3094         AC_DEFINE(HAVE_MMDEVICEAPI_H,1,[])
  3095     fi
  3096     AC_CHECK_HEADER(audioclient.h,,have_wasapi=no)
  3097     if test x$have_wasapi = xyes; then
  3098         AC_DEFINE(HAVE_AUDIOCLIENT_H,1,[])
  3099     fi
  3100 
  3101     AC_ARG_ENABLE(wasapi,
  3102 AS_HELP_STRING([--enable-wasapi], [use the Windows WASAPI audio driver [[default=yes]]]),
  3103                                 , enable_wasapi=yes)
  3104 }
  3105 
  3106 dnl Check for the dlfcn.h interface for dynamically loading objects
  3107 CheckDLOPEN()
  3108 {
  3109     AC_ARG_ENABLE(sdl-dlopen,
  3110 AS_HELP_STRING([--enable-sdl-dlopen], [use dlopen for shared object loading [[default=yes]]]),
  3111                   , enable_sdl_dlopen=yes)
  3112     if test x$enable_sdl_dlopen = xyes; then
  3113         AC_MSG_CHECKING(for dlopen)
  3114         have_dlopen=no
  3115         AC_TRY_COMPILE([
  3116          #include <dlfcn.h>
  3117         ],[
  3118          void *handle = dlopen("", RTLD_NOW);
  3119          const char *loaderror = (char *) dlerror();
  3120         ],[
  3121         have_dlopen=yes
  3122         ])
  3123         AC_MSG_RESULT($have_dlopen)
  3124 
  3125         if test x$have_dlopen = xyes; then
  3126             AC_CHECK_LIB(c, dlopen, EXTRA_LDFLAGS="$EXTRA_LDFLAGS",
  3127                AC_CHECK_LIB(dl, dlopen, EXTRA_LDFLAGS="$EXTRA_LDFLAGS -ldl",
  3128                   AC_CHECK_LIB(ltdl, dlopen, EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lltdl")))
  3129             AC_DEFINE(SDL_LOADSO_DLOPEN, 1, [ ])
  3130             SOURCES="$SOURCES $srcdir/src/loadso/dlopen/*.c"
  3131             have_loadso=yes
  3132         fi
  3133     fi
  3134 }
  3135 
  3136 dnl Check for the usbhid(3) library on *BSD
  3137 CheckUSBHID()
  3138 {
  3139     case "$host" in
  3140         *-*-*bsd*)
  3141             if test x$enable_joystick = xyes; then
  3142                 AC_CHECK_LIB(usbhid, hid_init, have_libusbhid=yes)
  3143                 if test x$have_libusbhid = xyes; then
  3144                     AC_CHECK_HEADER(usbhid.h, [USB_CFLAGS="-DHAVE_USBHID_H"])
  3145                     AC_CHECK_HEADER(libusbhid.h, [USB_CFLAGS="-DHAVE_LIBUSBHID_H"])
  3146                     USB_LIBS="$USB_LIBS -lusbhid"
  3147                 else
  3148                     AC_CHECK_HEADER(usb.h, [USB_CFLAGS="-DHAVE_USB_H"])
  3149                     AC_CHECK_HEADER(libusb.h, [USB_CFLAGS="-DHAVE_LIBUSB_H"])
  3150                     AC_CHECK_LIB(usb, hid_init, [USB_LIBS="$USB_LIBS -lusb"])
  3151                 fi
  3152                 
  3153                 save_CFLAGS="$CFLAGS"
  3154                 CFLAGS="$CFLAGS $USB_CFLAGS"
  3155 
  3156                 AC_MSG_CHECKING(for usbhid)
  3157                 have_usbhid=no
  3158                 AC_TRY_COMPILE([
  3159                   #include <sys/types.h>
  3160                   #if defined(HAVE_USB_H)
  3161                   #include <usb.h>
  3162                   #endif
  3163                   #ifdef __DragonFly__
  3164                   # include <bus/usb/usb.h>
  3165                   # include <bus/usb/usbhid.h>
  3166                   #else
  3167                   # include <dev/usb/usb.h>
  3168                   # include <dev/usb/usbhid.h>
  3169                   #endif
  3170                   #if defined(HAVE_USBHID_H)
  3171                   #include <usbhid.h>
  3172                   #elif defined(HAVE_LIBUSB_H)
  3173                   #include <libusb.h>
  3174                   #elif defined(HAVE_LIBUSBHID_H)
  3175                   #include <libusbhid.h>
  3176                   #endif
  3177                 ],[
  3178                   struct report_desc *repdesc;
  3179                   struct usb_ctl_report *repbuf;
  3180                   hid_kind_t hidkind;
  3181                 ],[
  3182                 have_usbhid=yes
  3183                 ])
  3184                 AC_MSG_RESULT($have_usbhid)
  3185 
  3186                 if test x$have_usbhid = xyes; then
  3187                     AC_MSG_CHECKING(for ucr_data member of usb_ctl_report)
  3188                     have_usbhid_ucr_data=no
  3189                     AC_TRY_COMPILE([
  3190                       #include <sys/types.h>
  3191                       #if defined(HAVE_USB_H)
  3192                       #include <usb.h>
  3193                       #endif
  3194                       #ifdef __DragonFly__
  3195                       # include <bus/usb/usb.h>
  3196                       # include <bus/usb/usbhid.h>
  3197                       #else
  3198                       # include <dev/usb/usb.h>
  3199                       # include <dev/usb/usbhid.h>
  3200                       #endif
  3201                       #if defined(HAVE_USBHID_H)
  3202                       #include <usbhid.h>
  3203                       #elif defined(HAVE_LIBUSB_H)
  3204                       #include <libusb.h>
  3205                       #elif defined(HAVE_LIBUSBHID_H)
  3206                       #include <libusbhid.h>
  3207                       #endif
  3208                     ],[
  3209                       struct usb_ctl_report buf;
  3210                       if (buf.ucr_data) { }
  3211                     ],[
  3212                     have_usbhid_ucr_data=yes
  3213                     ])
  3214                     if test x$have_usbhid_ucr_data = xyes; then
  3215                         USB_CFLAGS="$USB_CFLAGS -DUSBHID_UCR_DATA"
  3216                     fi
  3217                     AC_MSG_RESULT($have_usbhid_ucr_data)
  3218                     
  3219                     AC_MSG_CHECKING(for new usbhid API)
  3220                     have_usbhid_new=no
  3221                     AC_TRY_COMPILE([
  3222                       #include <sys/types.h>
  3223                       #if defined(HAVE_USB_H)
  3224                       #include <usb.h>
  3225                       #endif
  3226                       #ifdef __DragonFly__
  3227                       #include <bus/usb/usb.h>
  3228                       #include <bus/usb/usbhid.h>
  3229                       #else
  3230                       #include <dev/usb/usb.h>
  3231                       #include <dev/usb/usbhid.h>
  3232                       #endif
  3233                       #if defined(HAVE_USBHID_H)
  3234                       #include <usbhid.h>
  3235                       #elif defined(HAVE_LIBUSB_H)
  3236                       #include <libusb.h>
  3237                       #elif defined(HAVE_LIBUSBHID_H)
  3238                       #include <libusbhid.h>
  3239                       #endif
  3240                     ],[
  3241                       report_desc_t d;
  3242                       hid_start_parse(d, 1, 1);
  3243                     ],[
  3244                     have_usbhid_new=yes
  3245                     ])
  3246                     if test x$have_usbhid_new = xyes; then
  3247                         USB_CFLAGS="$USB_CFLAGS -DUSBHID_NEW"
  3248                     fi
  3249                     AC_MSG_RESULT($have_usbhid_new)
  3250 
  3251                     AC_MSG_CHECKING(for struct joystick in machine/joystick.h)
  3252                     have_machine_joystick=no
  3253                     AC_TRY_COMPILE([
  3254                       #include <machine/joystick.h>
  3255                     ],[
  3256                       struct joystick t;
  3257                     ],[
  3258                     have_machine_joystick=yes
  3259                     ])
  3260                     if test x$have_machine_joystick = xyes; then
  3261                         AC_DEFINE(SDL_JOYSTICK_USBHID_MACHINE_JOYSTICK_H, 1, [ ])
  3262                     fi
  3263                     AC_MSG_RESULT($have_machine_joystick)
  3264 
  3265                     AC_DEFINE(SDL_JOYSTICK_USBHID, 1, [ ])
  3266                     SOURCES="$SOURCES $srcdir/src/joystick/bsd/*.c"
  3267                     EXTRA_CFLAGS="$EXTRA_CFLAGS $USB_CFLAGS"
  3268                     EXTRA_LDFLAGS="$EXTRA_LDFLAGS $USB_LIBS"
  3269                     have_joystick=yes
  3270                 fi
  3271                 CFLAGS="$save_CFLAGS"
  3272             fi
  3273         ;;
  3274     esac
  3275 }
  3276 
  3277 dnl Check for HIDAPI joystick drivers
  3278 CheckHIDAPI()
  3279 {
  3280     # The hidraw support doesn't catch Xbox, PS4 and Nintendo controllers,
  3281     # so we'll just use libusb when it's available.
  3282     case "$host" in
  3283         # libusb does not support iOS
  3284         arm*-apple-darwin* | *-ios-* )
  3285             skiplibusb=yes
  3286             ;;
  3287         # On the other hand, *BSD specifically uses libusb only
  3288         *-*-*bsd* )
  3289             onlylibusb=yes
  3290             ;;
  3291     esac
  3292 
  3293     AC_ARG_ENABLE(hidapi,
  3294 AS_HELP_STRING([--enable-hidapi], [use HIDAPI for low level joystick drivers [[default=no]]]),
  3295                   , enable_hidapi=no)
  3296     if test x$enable_joystick = xyes -a x$enable_hidapi = xyes; then
  3297         if test x$skiplibusb = xyes; then
  3298             hidapi_support=yes
  3299         else
  3300             PKG_CHECK_MODULES([LIBUSB], [libusb-1.0], have_libusb=yes, have_libusb=no)
  3301             save_CFLAGS="$CFLAGS"
  3302             CFLAGS="$save_CFLAGS $LIBUSB_CFLAGS"
  3303             AC_CHECK_HEADER(libusb.h, have_libusb_h=yes)
  3304             CFLAGS="$save_CFLAGS"
  3305             if test x$have_libusb_h = xyes; then
  3306                 hidapi_support=yes
  3307             elif test x$onlylibusb = xyes; then
  3308                 hidapi_support=no
  3309             else
  3310                 hidapi_support=yes
  3311             fi
  3312         fi
  3313 
  3314         if test x$hidapi_support = xyes; then
  3315             AC_DEFINE(SDL_JOYSTICK_HIDAPI, 1, [ ])
  3316             EXTRA_CFLAGS="$EXTRA_CFLAGS -I$srcdir/src/hidapi/hidapi"
  3317             SOURCES="$SOURCES $srcdir/src/joystick/hidapi/*.c"
  3318             SOURCES="$SOURCES $srcdir/src/hidapi/SDL_hidapi.c"
  3319 
  3320             if test x$have_libusb_h = xyes; then
  3321                 EXTRA_CFLAGS="$EXTRA_CFLAGS $LIBUSB_CFLAGS"
  3322                 if test x$onlylibusb = xyes; then
  3323                     SOURCES="$SOURCES $srcdir/src/hidapi/libusb/hid.c"
  3324                     EXTRA_LDFLAGS="$EXTRA_LDFLAGS $LIBUSB_LIBS"
  3325                 else
  3326                     if test x$have_loadso != xyes; then
  3327                         AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic libusb loading])
  3328                     fi
  3329                     # libusb is loaded dynamically, so don't add it to LDFLAGS
  3330                     libusb_lib=""
  3331                     case "$host" in
  3332                         *-*-darwin* )
  3333                             libusb_lib="libusb-1.0.0.dylib"
  3334                             ;;
  3335                         *-*-cygwin* | *-*-mingw32* )
  3336                             libusb_lib="libusb-1.0.dll"
  3337                             ;;
  3338                     esac
  3339                     if test x$libusb_lib = x; then
  3340                         libusb_lib=[`find_lib "libusb-1.0.so.*" "" | sed 's/.*\/\(.*\)/\1/; q'`]
  3341                     fi
  3342                     AC_DEFINE_UNQUOTED(SDL_LIBUSB_DYNAMIC, "$libusb_lib", [ ])
  3343                 fi
  3344             fi
  3345         fi
  3346 
  3347         AC_MSG_CHECKING(for hidapi support)
  3348         AC_MSG_RESULT($hidapi_support)
  3349     fi
  3350 }
  3351 
  3352 dnl Check for clock_gettime()
  3353 CheckClockGettime()
  3354 {
  3355     AC_ARG_ENABLE(clock_gettime,
  3356 AS_HELP_STRING([--enable-clock_gettime], [use clock_gettime() instead of gettimeofday() on UNIX [[default=yes]]]),
  3357                   , enable_clock_gettime=yes)
  3358     if test x$enable_clock_gettime = xyes; then
  3359         AC_CHECK_LIB(rt, clock_gettime, have_clock_gettime=yes)
  3360         if test x$have_clock_gettime = xyes; then
  3361             AC_DEFINE(HAVE_CLOCK_GETTIME, 1, [ ])
  3362             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lrt"
  3363         else
  3364             AC_CHECK_LIB(c, clock_gettime, have_clock_gettime=yes)
  3365             if test x$have_clock_gettime = xyes; then
  3366                AC_DEFINE(HAVE_CLOCK_GETTIME, 1, [ ])
  3367                EXTRA_LDFLAGS="$EXTRA_LDFLAGS"
  3368             fi
  3369         fi
  3370     fi
  3371 }
  3372 
  3373 dnl Check for a valid linux/version.h
  3374 CheckLinuxVersion()
  3375 {
  3376     AC_CHECK_HEADER(linux/version.h, have_linux_version_h=yes)
  3377     if test x$have_linux_version_h = xyes; then
  3378         EXTRA_CFLAGS="$EXTRA_CFLAGS -DHAVE_LINUX_VERSION_H"
  3379     fi
  3380 }
  3381 
  3382 dnl Check if we want to use RPATH
  3383 CheckRPATH()
  3384 {
  3385     AC_ARG_ENABLE(rpath,
  3386 AS_HELP_STRING([--enable-rpath], [use an rpath when linking SDL [[default=yes]]]),
  3387                   , enable_rpath=yes)
  3388 }
  3389 
  3390 dnl Check if we want to use custom signals to fake iOS/Android's backgrounding
  3391 dnl  events. These could be useful if you're building a custom embedded
  3392 dnl  environment, etc, but most people don't need this.
  3393 CheckEventSignals()
  3394 {
  3395     AC_ARG_ENABLE(backgrounding-signal,
  3396 AS_HELP_STRING([--enable-backgrounding-signal], [number to use for magic backgrounding signal or 'no' [[default=no]]]),
  3397                   , enable_backgrounding_signal=no)
  3398     if test x$enable_backgrounding_signal != xno; then
  3399         EXTRA_CFLAGS="$EXTRA_CFLAGS -DSDL_BACKGROUNDING_SIGNAL=$enable_backgrounding_signal"
  3400     fi
  3401 
  3402     AC_ARG_ENABLE(foregrounding-signal,
  3403 AS_HELP_STRING([--enable-foregrounding-signal], [number to use for magic foregrounding signal or 'no' [[default=no]]]),
  3404                   , enable_foregrounding_signal=no)
  3405     if test x$enable_foregrounding_signal != xno; then
  3406         EXTRA_CFLAGS="$EXTRA_CFLAGS -DSDL_FOREGROUNDING_SIGNAL=$enable_foregrounding_signal"
  3407     fi
  3408 }
  3409 
  3410 
  3411 
  3412 dnl Do this on all platforms, before everything else (other things might want to override it).
  3413 CheckWarnAll
  3414 CheckNoStrictAliasing
  3415 
  3416 dnl Do this for every platform, but for some it doesn't mean anything, but better to catch it here anyhow.
  3417 CheckEventSignals
  3418 
  3419 dnl Set up the configuration based on the host platform!
  3420 case "$host" in
  3421     *-*-linux*|*-*-uclinux*|*-*-gnu*|*-*-k*bsd*-gnu|*-*-bsdi*|*-*-freebsd*|*-*-dragonfly*|*-*-netbsd*|*-*-openbsd*|*-*-sysv5*|*-*-solaris*|*-*-hpux*|*-*-aix*|*-*-minix*|*-*-nto*)
  3422         case "$host" in
  3423             *-*-android*)
  3424                 # Android
  3425                 ARCH=android
  3426                 ANDROID_CFLAGS="-DGL_GLEXT_PROTOTYPES"
  3427                 CFLAGS="$CFLAGS $ANDROID_CFLAGS"
  3428                 SDL_CFLAGS="$SDL_CFLAGS $ANDROID_CFLAGS"
  3429                 EXTRA_CFLAGS="$EXTRA_CFLAGS $ANDROID_CFLAGS"
  3430                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS -ldl -lGLESv1_CM -lGLESv2 -llog -landroid"
  3431                 SDLMAIN_SOURCES="$srcdir/src/main/android/*.c"
  3432 
  3433                 if test x$enable_video = xyes; then
  3434                     SOURCES="$SOURCES $srcdir/src/core/android/*.c $srcdir/src/video/android/*.c"
  3435                     # FIXME: confdefs? Not AC_DEFINE?
  3436                     $as_echo "#define SDL_VIDEO_DRIVER_ANDROID 1" >>confdefs.h
  3437                     SUMMARY_video="${SUMMARY_video} android"
  3438                 fi
  3439                 ;;
  3440             *-*-linux*)         ARCH=linux ;;
  3441             *-*-uclinux*)       ARCH=linux ;;
  3442             *-*-kfreebsd*-gnu)  ARCH=kfreebsd-gnu ;;
  3443             *-*-knetbsd*-gnu)   ARCH=knetbsd-gnu ;;
  3444             *-*-kopenbsd*-gnu)  ARCH=kopenbsd-gnu ;;
  3445             *-*-gnu*)           ARCH=gnu ;; # must be last of the gnu variants
  3446             *-*-bsdi*)          ARCH=bsdi ;;
  3447             *-*-freebsd*)       ARCH=freebsd ;;
  3448             *-*-dragonfly*)     ARCH=freebsd ;;
  3449             *-*-netbsd*)        ARCH=netbsd ;;
  3450             *-*-openbsd*)       ARCH=openbsd ;;
  3451             *-*-sysv5*)         ARCH=sysv5 ;;
  3452             *-*-solaris*)       ARCH=solaris ;;
  3453             *-*-hpux*)          ARCH=hpux ;;
  3454             *-*-aix*)           ARCH=aix ;;
  3455             *-*-minix*)         ARCH=minix ;;
  3456             *-*-nto*)           ARCH=nto
  3457                 CheckQNXVideo
  3458                 ;;
  3459         esac
  3460         CheckVisibilityHidden
  3461         CheckDeclarationAfterStatement
  3462         CheckDummyVideo
  3463         CheckDiskAudio
  3464         CheckDummyAudio
  3465         CheckDLOPEN
  3466         CheckARM
  3467         CheckNEON
  3468         CheckOSS
  3469         CheckALSA
  3470         CheckPulseAudio
  3471         CheckJACK
  3472         CheckARTSC
  3473         CheckESD
  3474         CheckNAS
  3475         CheckSNDIO
  3476         CheckFusionSound
  3477         CheckLibSampleRate
  3478         # Need to check for Raspberry PI first and add platform specific compiler flags, otherwise the test for GLES fails!
  3479         CheckRPI
  3480         CheckX11
  3481         CheckDirectFB
  3482         CheckKMSDRM
  3483         CheckOpenGLX11
  3484         CheckOpenGLESX11
  3485         CheckVulkan
  3486         CheckWayland
  3487         CheckInputEvents
  3488         CheckLibUDev
  3489         CheckDBus
  3490         CheckIME
  3491         CheckIBus
  3492         CheckFcitx
  3493         case $ARCH in
  3494           linux)
  3495               CheckInputKD
  3496           ;;
  3497         esac
  3498         CheckTslib
  3499         CheckUSBHID
  3500         CheckHIDAPI
  3501         CheckPTHREAD
  3502         CheckClockGettime
  3503         CheckLinuxVersion
  3504         CheckRPATH
  3505         CheckVivanteVideo
  3506 
  3507         # Set up files for the audio library
  3508         if test x$enable_audio = xyes; then
  3509           case $ARCH in
  3510             sysv5|solaris|hpux)
  3511                 AC_DEFINE(SDL_AUDIO_DRIVER_SUNAUDIO, 1, [ ])
  3512                 SOURCES="$SOURCES $srcdir/src/audio/sun/*.c"
  3513                 SUMMARY_audio="${SUMMARY_audio} sun"
  3514                 have_audio=yes
  3515             ;;
  3516             netbsd)  # Don't use this on OpenBSD, it's busted.
  3517                 AC_DEFINE(SDL_AUDIO_DRIVER_NETBSD, 1, [ ])
  3518                 SOURCES="$SOURCES $srcdir/src/audio/netbsd/*.c"
  3519                 SUMMARY_audio="${SUMMARY_audio} netbsd"
  3520                 have_audio=yes
  3521             ;;
  3522             aix)
  3523                 AC_DEFINE(SDL_AUDIO_DRIVER_PAUDIO, 1, [ ])
  3524                 SOURCES="$SOURCES $srcdir/src/audio/paudio/*.c"
  3525                 SUMMARY_audio="${SUMMARY_audio} paudio"
  3526                 have_audio=yes
  3527             ;;
  3528             android)
  3529                 AC_DEFINE(SDL_AUDIO_DRIVER_ANDROID, 1, [ ])
  3530                 SOURCES="$SOURCES $srcdir/src/audio/android/*.c"
  3531                 SUMMARY_audio="${SUMMARY_audio} android"
  3532                 have_audio=yes
  3533             ;;
  3534             nto)
  3535                 CheckQNXAudio
  3536             ;;
  3537           esac
  3538         fi
  3539         # Set up files for the joystick library
  3540         if test x$enable_joystick = xyes; then
  3541           case $ARCH in
  3542             linux)
  3543                 AC_DEFINE(SDL_JOYSTICK_LINUX, 1, [ ])
  3544                 SOURCES="$SOURCES $srcdir/src/joystick/linux/*.c"
  3545                 SOURCES="$SOURCES $srcdir/src/joystick/steam/*.c"
  3546                 have_joystick=yes
  3547             ;;
  3548             android)
  3549                 AC_DEFINE(SDL_JOYSTICK_ANDROID, 1, [ ])
  3550                 SOURCES="$SOURCES $srcdir/src/joystick/android/*.c"
  3551                 SOURCES="$SOURCES $srcdir/src/joystick/steam/*.c"
  3552                 have_joystick=yes
  3553             ;;
  3554           esac
  3555         fi
  3556         # Set up files for the haptic library
  3557         if test x$enable_haptic = xyes; then
  3558           case $ARCH in
  3559             linux)
  3560                 if test x$use_input_events = xyes; then
  3561                     AC_DEFINE(SDL_HAPTIC_LINUX, 1, [ ])
  3562                     SOURCES="$SOURCES $srcdir/src/haptic/linux/*.c"
  3563                     have_haptic=yes
  3564                 fi
  3565             ;;
  3566             android)
  3567                 AC_DEFINE(SDL_HAPTIC_ANDROID, 1, [ ])
  3568                 SOURCES="$SOURCES $srcdir/src/haptic/android/*.c"
  3569                 have_haptic=yes
  3570             ;;
  3571           esac
  3572         fi
  3573         # Set up files for the sensor library
  3574         if test x$enable_sensor = xyes; then
  3575           case $ARCH in
  3576             android)
  3577                 AC_DEFINE(SDL_SENSOR_ANDROID, 1, [ ])
  3578                 SOURCES="$SOURCES $srcdir/src/sensor/android/*.c"
  3579                 have_sensor=yes
  3580             ;;
  3581           esac
  3582         fi
  3583         # Set up files for the power library
  3584         if test x$enable_power = xyes; then
  3585              case $ARCH in
  3586                linux)
  3587                    AC_DEFINE(SDL_POWER_LINUX, 1, [ ])
  3588                    SOURCES="$SOURCES $srcdir/src/power/linux/*.c"
  3589                    have_power=yes
  3590                ;;
  3591                android)
  3592                    AC_DEFINE(SDL_POWER_ANDROID, 1, [ ])
  3593                    SOURCES="$SOURCES $srcdir/src/power/android/*.c"
  3594                    have_power=yes
  3595                ;;
  3596              esac
  3597         fi
  3598         # Set up files for the filesystem library
  3599         if test x$enable_filesystem = xyes; then
  3600              case $ARCH in
  3601                android)
  3602                    AC_DEFINE(SDL_FILESYSTEM_ANDROID, 1, [ ])
  3603                    SOURCES="$SOURCES $srcdir/src/filesystem/android/*.c"
  3604                    have_filesystem=yes
  3605                ;;
  3606                *)
  3607                    AC_DEFINE(SDL_FILESYSTEM_UNIX, 1, [ ])
  3608                    SOURCES="$SOURCES $srcdir/src/filesystem/unix/*.c"
  3609                    have_filesystem=yes
  3610                ;;
  3611              esac
  3612         fi
  3613         # Set up files for the timer library
  3614         if test x$enable_timers = xyes; then
  3615             AC_DEFINE(SDL_TIMER_UNIX, 1, [ ])
  3616             SOURCES="$SOURCES $srcdir/src/timer/unix/*.c"
  3617             have_timers=yes
  3618         fi
  3619         # Set up files for udev hotplugging support
  3620         if test x$enable_libudev = xyes && test x$have_libudev_h_hdr = xyes; then
  3621             SOURCES="$SOURCES $srcdir/src/core/linux/SDL_udev.c"               
  3622         fi
  3623         # Set up files for evdev input
  3624         if test x$use_input_events = xyes; then
  3625             SOURCES="$SOURCES $srcdir/src/core/linux/SDL_evdev*.c"
  3626         fi       
  3627         # Set up other core UNIX files
  3628         SOURCES="$SOURCES $srcdir/src/core/linux/SDL_threadprio.c"
  3629         SOURCES="$SOURCES $srcdir/src/core/unix/*.c"
  3630         ;;
  3631     *-*-cygwin* | *-*-mingw32*)
  3632         ARCH=win32
  3633         if test "$build" != "$host"; then # cross-compiling
  3634             # Default cross-compile location
  3635             ac_default_prefix=/usr/local/cross-tools/$host
  3636         else
  3637             # Look for the location of the tools and install there
  3638             if test "$BUILD_PREFIX" != ""; then
  3639                 ac_default_prefix=$BUILD_PREFIX
  3640             fi
  3641         fi
  3642         CheckDeclarationAfterStatement
  3643         CheckDummyVideo
  3644         CheckDiskAudio
  3645         CheckDummyAudio
  3646         CheckWINDOWS
  3647         CheckWINDOWSGL
  3648         CheckWINDOWSGLES
  3649         CheckVulkan
  3650         CheckDIRECTX
  3651         CheckHIDAPI
  3652 
  3653         # Set up the core platform files
  3654         SOURCES="$SOURCES $srcdir/src/core/windows/*.c"
  3655 
  3656         # Set up files for the video library
  3657         if test x$enable_video = xyes; then
  3658             AC_DEFINE(SDL_VIDEO_DRIVER_WINDOWS, 1, [ ])
  3659             SOURCES="$SOURCES $srcdir/src/video/windows/*.c"
  3660             have_video=yes
  3661             AC_ARG_ENABLE(render-d3d,
  3662 AS_HELP_STRING([--enable-render-d3d], [enable the Direct3D render driver [[default=yes]]]),
  3663                                 , enable_render_d3d=yes)
  3664             if test x$enable_render_d3d = xyes -a x$have_d3d = xyes; then
  3665                 AC_DEFINE(SDL_VIDEO_RENDER_D3D, 1, [ ])
  3666                 SUMMARY_video="${SUMMARY_video} d3d9"
  3667             fi
  3668             if test x$enable_render_d3d = xyes -a x$have_d3d11 = xyes; then
  3669                 AC_DEFINE(SDL_VIDEO_RENDER_D3D11, 1, [ ])
  3670                 SUMMARY_video="${SUMMARY_video} d3d11"
  3671             fi
  3672         fi
  3673         # Set up files for the audio library
  3674         if test x$enable_audio = xyes; then
  3675             AC_DEFINE(SDL_AUDIO_DRIVER_WINMM, 1, [ ])
  3676             SUMMARY_audio="${SUMMARY_audio} winmm"
  3677             SOURCES="$SOURCES $srcdir/src/audio/winmm/*.c"
  3678             if test x$have_dsound = xyes; then
  3679                 AC_DEFINE(SDL_AUDIO_DRIVER_DSOUND, 1, [ ])
  3680                 SUMMARY_audio="${SUMMARY_audio} directsound"
  3681                 SOURCES="$SOURCES $srcdir/src/audio/directsound/*.c"
  3682             fi
  3683             if test x$have_wasapi = xyes -a x$enable_wasapi = xyes; then
  3684                 AC_DEFINE(SDL_AUDIO_DRIVER_WASAPI, 1, [ ])
  3685                 SUMMARY_audio="${SUMMARY_audio} wasapi"
  3686                 SOURCES="$SOURCES $srcdir/src/audio/wasapi/*.c"
  3687             fi
  3688             have_audio=yes
  3689         fi
  3690         # Set up files for the joystick library
  3691         if test x$enable_joystick = xyes; then
  3692             if test x$have_dinput = xyes -o x$have_xinput = xyes; then
  3693                 if test x$have_xinput = xyes; then
  3694                     AC_DEFINE(SDL_JOYSTICK_XINPUT, 1, [ ])
  3695                 fi
  3696                 if test x$have_dinput = xyes; then
  3697                     AC_DEFINE(SDL_JOYSTICK_DINPUT, 1, [ ])
  3698                     EXTRA_LDFLAGS="$EXTRA_LDFLAGS -ldinput8 -ldxguid -ldxerr8"
  3699                 fi
  3700             else
  3701                 AC_DEFINE(SDL_JOYSTICK_WINMM, 1, [ ])
  3702             fi
  3703             SOURCES="$SOURCES $srcdir/src/joystick/windows/*.c"
  3704             have_joystick=yes
  3705         fi
  3706         if test x$enable_haptic = xyes; then
  3707             if test x$have_dinput = xyes -o x$have_xinput = xyes; then
  3708                 if test x$have_xinput = xyes; then
  3709                     AC_DEFINE(SDL_HAPTIC_XINPUT, 1, [ ])
  3710                 fi
  3711                 if test x$have_dinput = xyes; then
  3712                     AC_DEFINE(SDL_HAPTIC_DINPUT, 1, [ ])
  3713                 fi
  3714                 SOURCES="$SOURCES $srcdir/src/haptic/windows/*.c"
  3715                 have_haptic=yes
  3716             fi
  3717         fi
  3718         if test x$enable_power = xyes; then
  3719             AC_DEFINE(SDL_POWER_WINDOWS, 1, [ ])
  3720             SOURCES="$SOURCES $srcdir/src/power/windows/SDL_syspower.c"
  3721             have_power=yes
  3722         fi
  3723         if test x$enable_filesystem = xyes; then
  3724             AC_DEFINE(SDL_FILESYSTEM_WINDOWS, 1, [ ])
  3725             SOURCES="$SOURCES $srcdir/src/filesystem/windows/SDL_sysfilesystem.c"
  3726             have_filesystem=yes
  3727         fi
  3728         # Set up files for the thread library
  3729         if test x$enable_threads = xyes; then
  3730             AC_DEFINE(SDL_THREAD_WINDOWS, 1, [ ])
  3731             SOURCES="$SOURCES $srcdir/src/thread/windows/*.c"
  3732             SOURCES="$SOURCES $srcdir/src/thread/generic/SDL_syscond.c"
  3733             have_threads=yes
  3734         fi
  3735         # Set up files for the timer library
  3736         if test x$enable_timers = xyes; then
  3737             AC_DEFINE(SDL_TIMER_WINDOWS, 1, [ ])
  3738             SOURCES="$SOURCES $srcdir/src/timer/windows/*.c"
  3739             have_timers=yes
  3740         fi
  3741         # Set up files for the shared object loading library
  3742         if test x$enable_loadso = xyes; then
  3743             AC_DEFINE(SDL_LOADSO_WINDOWS, 1, [ ])
  3744             SOURCES="$SOURCES $srcdir/src/loadso/windows/*.c"
  3745             have_loadso=yes
  3746         fi
  3747         # Set up the system libraries we need
  3748         if test -f /lib/w32api/libuuid.a; then
  3749             LIBUUID=/lib/w32api/libuuid.a
  3750         else
  3751             LIBUUID=-luuid
  3752         fi
  3753         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -luser32 -lgdi32 -lwinmm -limm32 -lole32 -loleaut32 -lshell32 -lsetupapi -lversion $LIBUUID -static-libgcc"
  3754         # The Windows platform requires special setup
  3755         VERSION_SOURCES="$srcdir/src/main/windows/*.rc"
  3756         SDLMAIN_SOURCES="$srcdir/src/main/windows/*.c"
  3757         SDL_CFLAGS="$SDL_CFLAGS -Dmain=SDL_main"
  3758         SDL_LIBS="-lSDL2main $SDL_LIBS -mwindows"
  3759 
  3760         # Check to see if this is a mingw or cygwin build
  3761         have_mingw32=
  3762         AC_CHECK_LIB(mingw32, main, [have_mingw32=yes])
  3763         if test x$have_mingw32 = xyes; then
  3764             SDL_LIBS="-lmingw32 $SDL_LIBS"
  3765         else
  3766             SDL_LIBS="-lcygwin $SDL_LIBS"
  3767         fi
  3768         ;;
  3769 
  3770     dnl BeOS support removed after SDL 2.0.1. Haiku still works.  --ryan.
  3771     *-*-beos*)
  3772         AC_MSG_ERROR([
  3773 *** BeOS support has been removed as of SDL 2.0.2.
  3774         ])
  3775         ;;
  3776 
  3777     *-*-haiku*)
  3778         ARCH=haiku
  3779         ac_default_prefix=/boot/system
  3780         CheckDummyVideo
  3781         CheckDiskAudio
  3782         CheckDummyAudio
  3783         CheckDLOPEN
  3784         CheckHaikuVideo
  3785         CheckHaikuGL
  3786         CheckPTHREAD
  3787 
  3788         # Set up files for the audio library
  3789         if test x$enable_audio = xyes; then
  3790             AC_DEFINE(SDL_AUDIO_DRIVER_HAIKU, 1, [ ])
  3791             SOURCES="$SOURCES $srcdir/src/audio/haiku/*.cc"
  3792             SUMMARY_audio="${SUMMARY_audio} haiku"
  3793             have_audio=yes
  3794         fi
  3795         # Set up files for the joystick library
  3796         if test x$enable_joystick = xyes; then
  3797             AC_DEFINE(SDL_JOYSTICK_HAIKU, 1, [ ])
  3798             SOURCES="$SOURCES $srcdir/src/joystick/haiku/*.cc"
  3799             have_joystick=yes
  3800         fi
  3801         # Set up files for the timer library
  3802         if test x$enable_timers = xyes; then
  3803             AC_DEFINE(SDL_TIMER_HAIKU, 1, [ ])
  3804             SOURCES="$SOURCES $srcdir/src/timer/haiku/*.c"
  3805             have_timers=yes
  3806         fi
  3807         # Set up files for the system power library
  3808         if test x$enable_power = xyes; then
  3809             AC_DEFINE(SDL_POWER_HAIKU, 1, [ ])
  3810             SOURCES="$SOURCES $srcdir/src/power/haiku/*.c"
  3811             have_power=yes
  3812         fi
  3813         # Set up files for the system filesystem library
  3814         if test x$enable_filesystem = xyes; then
  3815             AC_DEFINE(SDL_FILESYSTEM_HAIKU, 1, [ ])
  3816             SOURCES="$SOURCES $srcdir/src/filesystem/haiku/*.cc"
  3817             have_filesystem=yes
  3818         fi
  3819         # The Haiku platform requires special setup.
  3820         SOURCES="$srcdir/src/main/haiku/*.cc $SOURCES"
  3821         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lroot -lbe -lmedia -lgame -ldevice -ltextencoding"
  3822         # Haiku's x86 spins use libstdc++.r4.so (for binary compat?), but
  3823         #  other spins, like x86-64, use a more standard "libstdc++.so.*"
  3824         AC_CHECK_FILE("/boot/system/lib/libstdc++.r4.so", EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lstdc++.r4", EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lstdc++")
  3825         ;;
  3826     arm*-apple-darwin*|*-ios-*)
  3827         ARCH=ios
  3828 
  3829         CheckVisibilityHidden
  3830         CheckDeclarationAfterStatement
  3831         CheckDummyVideo
  3832         CheckDiskAudio
  3833         CheckDummyAudio
  3834         CheckDLOPEN
  3835         CheckMETAL
  3836         CheckVulkan
  3837         CheckPTHREAD
  3838 
  3839         # Set up files for the audio library
  3840         if test x$enable_audio = xyes; then
  3841             AC_DEFINE(SDL_AUDIO_DRIVER_COREAUDIO, 1, [ ])
  3842             SOURCES="$SOURCES $srcdir/src/audio/coreaudio/*.m"
  3843             SUMMARY_audio="${SUMMARY_audio} coreaudio"
  3844             have_audio=yes
  3845         fi
  3846         # Set up files for the joystick library
  3847         if test x$enable_joystick = xyes; then
  3848             AC_DEFINE(SDL_JOYSTICK_MFI, 1, [ ])
  3849             SOURCES="$SOURCES $srcdir/src/joystick/iphoneos/*.m"
  3850             SOURCES="$SOURCES $srcdir/src/joystick/steam/*.c"
  3851             have_joystick=yes
  3852         fi
  3853         # Set up files for the haptic library
  3854         #if test x$enable_haptic = xyes; then
  3855         #    SOURCES="$SOURCES $srcdir/src/haptic/darwin/*.c"
  3856         #    have_haptic=yes
  3857         #    EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,ForceFeedback"
  3858         #fi
  3859         # Set up files for the sensor library
  3860         if test x$enable_sensor = xyes; then
  3861             AC_DEFINE(SDL_SENSOR_COREMOTION, 1, [ ])
  3862             SOURCES="$SOURCES $srcdir/src/sensor/coremotion/*.m"
  3863             have_sensor=yes
  3864         fi
  3865         # Set up files for the power library
  3866         if test x$enable_power = xyes; then
  3867             AC_DEFINE(SDL_POWER_UIKIT, 1, [ ])
  3868             SOURCES="$SOURCES $srcdir/src/power/uikit/*.m"
  3869             have_power=yes
  3870         fi
  3871         # Set up files for the filesystem library
  3872         if test x$enable_filesystem = xyes; then
  3873             SOURCES="$SOURCES $srcdir/src/filesystem/cocoa/*.m"
  3874             have_filesystem=yes
  3875         fi
  3876         # Set up additional files for the file library
  3877         if test x$enable_file = xyes; then
  3878             AC_DEFINE(SDL_FILESYSTEM_COCOA, 1, [ ])
  3879             SOURCES="$SOURCES $srcdir/src/file/cocoa/*.m"
  3880         fi
  3881         # Set up files for the timer library
  3882         if test x$enable_timers = xyes; then
  3883             AC_DEFINE(SDL_TIMER_UNIX, 1, [ ])
  3884             SOURCES="$SOURCES $srcdir/src/timer/unix/*.c"
  3885             have_timers=yes
  3886         fi
  3887         # Set up other core UNIX files
  3888         SOURCES="$SOURCES $srcdir/src/core/unix/*.c"
  3889         # The iOS platform requires special setup.
  3890         AC_DEFINE(SDL_VIDEO_DRIVER_UIKIT, 1, [ ])
  3891         AC_DEFINE(SDL_VIDEO_OPENGL_ES2, 1, [ ])
  3892         AC_DEFINE(SDL_VIDEO_OPENGL_ES, 1, [ ])
  3893         AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES, 1, [ ])
  3894         AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES2, 1, [ ])
  3895         SOURCES="$SOURCES $srcdir/src/video/uikit/*.m"
  3896         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lm -liconv -lobjc"
  3897         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,AVFoundation"
  3898         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,AudioToolbox"
  3899         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,CoreAudio"
  3900         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,CoreGraphics"
  3901         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,CoreMotion"
  3902         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,Foundation"
  3903         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,GameController"
  3904         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,OpenGLES"
  3905         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,QuartzCore"
  3906         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,UIKit"
  3907 
  3908         if test x$enable_video_metal = xyes -o x$enable_video_vulkan = xyes; then
  3909             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,Metal"
  3910         fi
  3911         ;;
  3912     *-*-darwin* )
  3913         # This could be either full "Mac OS X", or plain "Darwin" which is
  3914         # just the OS X kernel sans upper layers like Carbon and Cocoa.
  3915         # Next line is broken, and a few files below require Mac OS X (full)
  3916         ARCH=macosx
  3917 
  3918         # Mac OS X builds with both the Carbon and OSX APIs at the moment
  3919         EXTRA_CFLAGS="$EXTRA_CFLAGS -DTARGET_API_MAC_CARBON"
  3920         EXTRA_CFLAGS="$EXTRA_CFLAGS -DTARGET_API_MAC_OSX"
  3921 
  3922         CheckVisibilityHidden
  3923         CheckDeclarationAfterStatement
  3924         CheckDummyVideo
  3925         CheckDiskAudio
  3926         CheckDummyAudio
  3927         CheckDLOPEN
  3928         CheckCOCOA
  3929         CheckMETAL
  3930         CheckX11
  3931         CheckMacGL
  3932         CheckMacGLES
  3933         CheckOpenGLX11
  3934         CheckVulkan
  3935         CheckPTHREAD
  3936         CheckHIDAPI
  3937 
  3938         # Set up files for the audio library
  3939         if test x$enable_audio = xyes; then
  3940             AC_DEFINE(SDL_AUDIO_DRIVER_COREAUDIO, 1, [ ])
  3941             SOURCES="$SOURCES $srcdir/src/audio/coreaudio/*.m"
  3942             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,CoreAudio -Wl,-framework,AudioToolbox"
  3943             SUMMARY_audio="${SUMMARY_audio} coreaudio"
  3944             have_audio=yes
  3945         fi
  3946         # Set up files for the joystick library
  3947         if test x$enable_joystick = xyes; then
  3948             AC_DEFINE(SDL_JOYSTICK_IOKIT, 1, [ ])
  3949             SOURCES="$SOURCES $srcdir/src/joystick/darwin/*.c"
  3950             have_joystick=yes
  3951         fi
  3952         # Set up files for the haptic library
  3953         if test x$enable_haptic = xyes; then
  3954             AC_DEFINE(SDL_HAPTIC_IOKIT, 1, [ ])
  3955             SOURCES="$SOURCES $srcdir/src/haptic/darwin/*.c"
  3956             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,ForceFeedback"
  3957             have_haptic=yes
  3958         fi
  3959         # Set up files for the power library
  3960         if test x$enable_power = xyes; then
  3961             AC_DEFINE(SDL_POWER_MACOSX, 1, [ ])
  3962             SOURCES="$SOURCES $srcdir/src/power/macosx/*.c"
  3963             have_power=yes
  3964         fi
  3965         # Set up files for the filesystem library
  3966         if test x$enable_filesystem = xyes; then
  3967             AC_DEFINE(SDL_FILESYSTEM_COCOA, 1, [ ])
  3968             SOURCES="$SOURCES $srcdir/src/filesystem/cocoa/*.m"
  3969             have_filesystem=yes
  3970         fi
  3971         # Set up files for the timer library
  3972         if test x$enable_timers = xyes; then
  3973             AC_DEFINE(SDL_TIMER_UNIX, 1, [ ])
  3974             SOURCES="$SOURCES $srcdir/src/timer/unix/*.c"
  3975             have_timers=yes
  3976         fi
  3977         # Set up additional files for the file library
  3978         if test x$enable_file = xyes; then
  3979             SOURCES="$SOURCES $srcdir/src/file/cocoa/*.m"
  3980         fi
  3981         # Set up other core UNIX files
  3982         SOURCES="$SOURCES $srcdir/src/core/unix/*.c"
  3983         # The Mac OS X platform requires special setup.
  3984         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lobjc"
  3985         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,CoreVideo"
  3986         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,Cocoa"
  3987         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,Carbon"
  3988         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,IOKit"
  3989 
  3990         if test x$enable_video_metal = xyes -o x$enable_video_vulkan = xyes; then
  3991             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-weak_framework,QuartzCore -Wl,-weak_framework,Metal"
  3992         fi
  3993         ;;
  3994     *-nacl|*-pnacl)
  3995         ARCH=nacl
  3996         CheckNativeClient
  3997         CheckDummyAudio
  3998         CheckDummyVideo
  3999         CheckInputEvents
  4000         CheckPTHREAD
  4001 
  4002         # Set up files for the timer library
  4003         if test x$enable_timers = xyes; then
  4004             AC_DEFINE(SDL_TIMER_UNIX, 1, [ ])
  4005             SOURCES="$SOURCES $srcdir/src/timer/unix/*.c"
  4006             have_timers=yes
  4007         fi
  4008         
  4009         if test x$enable_filesystem = xyes; then
  4010             AC_DEFINE(SDL_FILESYSTEM_NACL, 1, [ ])
  4011             SOURCES="$SOURCES $srcdir/src/filesystem/nacl/*.c"
  4012             have_filesystem=yes
  4013         fi
  4014         ;;
  4015     *-*-emscripten* )
  4016         if test x$enable_video = xyes; then
  4017             AC_DEFINE(SDL_VIDEO_DRIVER_EMSCRIPTEN, 1, [ ])
  4018             SOURCES="$SOURCES $srcdir/src/video/emscripten/*.c"
  4019             have_video=yes
  4020             SUMMARY_video="${SUMMARY_video} emscripten"
  4021         fi
  4022 
  4023         if test x$enable_audio = xyes; then
  4024             AC_DEFINE(SDL_AUDIO_DRIVER_EMSCRIPTEN, 1, [ ])
  4025             SOURCES="$SOURCES $srcdir/src/audio/emscripten/*.c"
  4026             have_audio=yes
  4027             SUMMARY_audio="${SUMMARY_audio} emscripten"
  4028         fi
  4029 
  4030         CheckVisibilityHidden
  4031         CheckDeclarationAfterStatement
  4032         CheckDummyVideo
  4033         CheckDiskAudio
  4034         CheckDummyAudio
  4035         CheckDLOPEN
  4036         CheckClockGettime
  4037         CheckEmscriptenGLES
  4038 
  4039          # Set up files for the power library
  4040         if test x$enable_power = xyes; then
  4041             AC_DEFINE(SDL_POWER_EMSCRIPTEN, 1, [ ])
  4042             SOURCES="$SOURCES $srcdir/src/power/emscripten/*.c"
  4043             have_power=yes
  4044         fi
  4045         
  4046         # Set up files for the power library
  4047         if test x$enable_joystick = xyes; then
  4048             AC_DEFINE(SDL_JOYSTICK_EMSCRIPTEN, 1, [ ])
  4049             SOURCES="$SOURCES $srcdir/src/joystick/emscripten/*.c"
  4050             have_joystick=yes
  4051         fi
  4052 
  4053         # Set up files for the filesystem library
  4054         if test x$enable_filesystem = xyes; then
  4055             AC_DEFINE(SDL_FILESYSTEM_EMSCRIPTEN, 1, [ ])
  4056             SOURCES="$SOURCES $srcdir/src/filesystem/emscripten/*.c"
  4057             have_filesystem=yes
  4058         fi
  4059         # Set up files for the timer library
  4060         if test x$enable_timers = xyes; then
  4061             AC_DEFINE(SDL_TIMER_UNIX, 1, [ ])
  4062             SOURCES="$SOURCES $srcdir/src/timer/unix/*.c"
  4063             have_timers=yes
  4064         fi
  4065         ;;
  4066     *)
  4067         AC_MSG_ERROR([
  4068 *** Unsupported host:  Please add to configure.ac
  4069         ])
  4070         ;;
  4071 esac
  4072 
  4073 # Check whether to install sdl2-config
  4074 AC_MSG_CHECKING(whether to install sdl2-config)
  4075 AC_ARG_ENABLE([sdl2-config],
  4076     AS_HELP_STRING([--enable-sdl2-config], [Install sdl2-config [default=yes]]),
  4077     [case "${enableval}" in
  4078         yes) enable_sdl2_config="TRUE" ;;
  4079         no) enable_sdl2_config="FALSE" ;;
  4080         *) AC_MSG_ERROR([bad value '${enableval}' for --enable-sdl2-config]) ;;
  4081     esac], [enable_sdl2_config="TRUE"])
  4082 if test "$enable_sdl2_config" = "TRUE"; then
  4083     AC_MSG_RESULT(yes)
  4084 else
  4085     AC_MSG_RESULT(no)
  4086 fi
  4087 AC_SUBST([INSTALL_SDL2_CONFIG], [$enable_sdl2_config])
  4088 
  4089 # Verify that we have all the platform specific files we need
  4090 
  4091 if test x$have_joystick != xyes; then
  4092     if test x$enable_joystick = xyes; then
  4093         AC_DEFINE(SDL_JOYSTICK_DUMMY, 1, [ ])
  4094     fi
  4095     SOURCES="$SOURCES $srcdir/src/joystick/dummy/*.c"
  4096 fi
  4097 if test x$have_haptic != xyes; then
  4098     if test x$enable_haptic = xyes; then
  4099         AC_DEFINE(SDL_HAPTIC_DUMMY, 1, [ ])
  4100     fi
  4101     SOURCES="$SOURCES $srcdir/src/haptic/dummy/*.c"
  4102 fi
  4103 if test x$have_sensor != xyes; then
  4104     if test x$enable_sensor = xyes; then
  4105         AC_DEFINE(SDL_SENSOR_DUMMY, 1, [ ])
  4106     fi
  4107     SOURCES="$SOURCES $srcdir/src/sensor/dummy/*.c"
  4108 fi
  4109 if test x$have_threads != xyes; then
  4110     if test x$enable_threads = xyes; then
  4111         AC_DEFINE(SDL_THREADS_DISABLED, 1, [ ])
  4112     fi
  4113     SOURCES="$SOURCES $srcdir/src/thread/generic/*.c"
  4114 fi
  4115 if test x$have_timers != xyes; then
  4116     if test x$enable_timers = xyes; then
  4117         AC_DEFINE(SDL_TIMERS_DISABLED, 1, [ ])
  4118     fi
  4119     SOURCES="$SOURCES $srcdir/src/timer/dummy/*.c"
  4120 fi
  4121 if test x$have_filesystem != xyes; then
  4122     if test x$enable_filesystem = xyes; then
  4123         AC_DEFINE(SDL_FILESYSTEM_DISABLED, 1, [ ])
  4124     fi
  4125     SOURCES="$SOURCES $srcdir/src/filesystem/dummy/*.c"
  4126 fi
  4127 if test x$have_loadso != xyes; then
  4128     if test x$enable_loadso = xyes; then
  4129         AC_DEFINE(SDL_LOADSO_DISABLED, 1, [ ])
  4130     fi
  4131     SOURCES="$SOURCES $srcdir/src/loadso/dummy/*.c"
  4132 fi
  4133 if test x$SDLMAIN_SOURCES = x; then
  4134     SDLMAIN_SOURCES="$srcdir/src/main/dummy/*.c"
  4135 fi
  4136 SDLTEST_SOURCES="$srcdir/src/test/*.c"
  4137 
  4138 if test x$video_wayland = xyes; then
  4139     WAYLAND_PROTOCOLS=`cd $srcdir/wayland-protocols ; for p in *.xml ; do echo -n "\$p" |sed 's,\\.xml\$, ,g' ; done`
  4140     WAYLAND_PROTOCOLS_SOURCES=`for p in $WAYLAND_PROTOCOLS ; do echo -n "\\$(gen)/\$p-protocol.c " ; done`
  4141     WAYLAND_PROTOCOLS_HEADERS=`for p in $WAYLAND_PROTOCOLS ; do echo -n "\\$(gen)/\$p-client-protocol.h " ; done`
  4142     GEN_SOURCES="$GEN_SOURCES $WAYLAND_PROTOCOLS_SOURCES"
  4143     GEN_HEADERS="$GEN_HEADERS $WAYLAND_PROTOCOLS_HEADERS"
  4144 
  4145     WAYLAND_PROTOCOLS_DEPENDS=`for p in $WAYLAND_PROTOCOLS ; do\
  4146         echo ;\
  4147         echo "\\$(gen)/\$p-client-protocol.h: \\$(srcdir)/wayland-protocols/\$p.xml" ;\
  4148         echo "	@\\$(SHELL) \\$(auxdir)/mkinstalldirs \\$(gen)" ;\
  4149         echo "	\\$(RUN_CMD_GEN)\\$(WAYLAND_SCANNER) client-header \\$< \\$@" ;\
  4150         echo ;\
  4151         echo "\\$(gen)/\$p-protocol.c: \\$(srcdir)/wayland-protocols/\$p.xml" ;\
  4152         echo "	@\\$(SHELL) \\$(auxdir)/mkinstalldirs \\$(gen)" ;\
  4153         echo "	\\$(RUN_CMD_GEN)\\$(WAYLAND_SCANNER) code \\$< \\$@" ;\
  4154         echo ;\
  4155         echo "\\$(objects)/\$p-protocol.lo: \\$(gen)/\$p-protocol.c \\$(gen)/\$p-client-protocol.h" ;\
  4156         echo "	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@" ;\
  4157         done ;\
  4158         echo ;\
  4159         for s in $WAYLAND_SOURCES ; do echo -n "\$s:" ; for p in $WAYLAND_PROTOCOLS ; do echo -n " \\$(gen)/\$p-client-protocol.h" ; done ; echo ; done ; echo`
  4160 fi
  4161 
  4162 OBJECTS=`echo $SOURCES`
  4163 DEPENDS=`echo $SOURCES | tr ' ' '\n'`
  4164 for EXT in asm cc m c S; do
  4165     OBJECTS=`echo "$OBJECTS" | sed 's,[[^ ]]*/\([[^ ]]*\)\.'$EXT',$(objects)/\1.lo,g'`
  4166     DEPENDS=`echo "$DEPENDS" | sed "s,^\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.$EXT\\$,\\\\
  4167 \\$(objects)/\\2.lo: \\1/\\2.$EXT \\$(objects)/.created\\\\
  4168 	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@,g"`
  4169 done
  4170 
  4171 GEN_OBJECTS=`echo "$GEN_SOURCES" | sed 's,[[^ ]]*/\([[^ ]]*\)\.c,$(objects)/\1.lo,g'`
  4172 
  4173 VERSION_OBJECTS=`echo $VERSION_SOURCES`
  4174 VERSION_DEPENDS=`echo $VERSION_SOURCES`
  4175 VERSION_OBJECTS=`echo "$VERSION_OBJECTS" | sed 's,[[^ ]]*/\([[^ ]]*\)\.rc,$(objects)/\1.o,g'`
  4176 VERSION_DEPENDS=`echo "$VERSION_DEPENDS" | sed "s,\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.rc,\\\\
  4177 \\$(objects)/\\2.o: \\1/\\2.rc \\$(objects)/.created\\\\
  4178 	\\$(WINDRES) \\$< \\$@,g"`
  4179 
  4180 SDLMAIN_OBJECTS=`echo $SDLMAIN_SOURCES`
  4181 SDLMAIN_DEPENDS=`echo $SDLMAIN_SOURCES`
  4182 SDLMAIN_OBJECTS=`echo "$SDLMAIN_OBJECTS" | sed 's,[[^ ]]*/\([[^ ]]*\)\.c,$(objects)/\1.lo,g'`
  4183 SDLMAIN_DEPENDS=`echo "$SDLMAIN_DEPENDS" | sed "s,\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.c,\\\\
  4184 \\$(objects)/\\2.lo: \\1/\\2.c \\$(objects)/.created\\\\
  4185 	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@,g"`
  4186 
  4187 SDLTEST_OBJECTS=`echo $SDLTEST_SOURCES`
  4188 SDLTEST_DEPENDS=`echo $SDLTEST_SOURCES`
  4189 SDLTEST_OBJECTS=`echo "$SDLTEST_OBJECTS" | sed 's,[[^ ]]*/\([[^ ]]*\)\.c,$(objects)/\1.lo,g'`
  4190 SDLTEST_DEPENDS=`echo "$SDLTEST_DEPENDS" | sed "s,\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.c,\\\\
  4191 \\$(objects)/\\2.lo: \\1/\\2.c \\$(objects)/.created\\\\
  4192 	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@,g"`
  4193 
  4194 # Set runtime shared library paths as needed
  4195 
  4196 if test "x$enable_rpath" = "xyes"; then
  4197   if test $ARCH = bsdi -o $ARCH = freebsd -o $ARCH = linux -o $ARCH = netbsd; then
  4198     SDL_RLD_FLAGS="-Wl,-rpath,\${libdir}"
  4199 
  4200     AC_MSG_CHECKING(for linker option --enable-new-dtags)
  4201     have_enable_new_dtags=no
  4202     save_LDFLAGS="$LDFLAGS"
  4203     LDFLAGS="$LDFLAGS -Wl,--enable-new-dtags"
  4204     AC_TRY_LINK([
  4205     ],[
  4206     ],[
  4207     have_enable_new_dtags=yes
  4208     SDL_RLD_FLAGS="$SDL_RLD_FLAGS -Wl,--enable-new-dtags"
  4209     ])
  4210     LDFLAGS="$save_LDFLAGS"
  4211     AC_MSG_RESULT($have_enable_new_dtags)
  4212   fi
  4213   if test $ARCH = solaris; then
  4214     SDL_RLD_FLAGS="-R\${libdir}"
  4215   fi
  4216 else
  4217   SDL_RLD_FLAGS=""
  4218 fi
  4219 
  4220 SDL_STATIC_LIBS="$SDL_LIBS $EXTRA_LDFLAGS"
  4221 
  4222 dnl Expand the cflags and libraries needed by apps using SDL
  4223 AC_SUBST(SDL_CFLAGS)
  4224 AC_SUBST(SDL_LIBS)
  4225 AC_SUBST(SDL_STATIC_LIBS)
  4226 AC_SUBST(SDL_RLD_FLAGS)
  4227 if test x$enable_shared = xyes; then
  4228     ENABLE_SHARED_TRUE=
  4229     ENABLE_SHARED_FALSE="#"
  4230 else
  4231     ENABLE_SHARED_TRUE="#"
  4232     ENABLE_SHARED_FALSE=
  4233 fi
  4234 if test x$enable_static = xyes; then
  4235     ENABLE_STATIC_TRUE=
  4236     ENABLE_STATIC_FALSE="#"
  4237 else
  4238     ENABLE_STATIC_TRUE="#"
  4239     ENABLE_STATIC_FALSE=
  4240 fi
  4241 AC_SUBST(ENABLE_SHARED_TRUE)
  4242 AC_SUBST(ENABLE_SHARED_FALSE)
  4243 AC_SUBST(ENABLE_STATIC_TRUE)
  4244 AC_SUBST(ENABLE_STATIC_FALSE)
  4245 
  4246 dnl Expand the sources and objects needed to build the library
  4247 AC_SUBST(ac_aux_dir)
  4248 AC_SUBST(INCLUDE)
  4249 AC_SUBST(OBJECTS)
  4250 AC_SUBST(GEN_HEADERS)
  4251 AC_SUBST(GEN_OBJECTS)
  4252 AC_SUBST(VERSION_OBJECTS)
  4253 AC_SUBST(SDLMAIN_OBJECTS)
  4254 AC_SUBST(SDLTEST_OBJECTS)
  4255 AC_SUBST(BUILD_CFLAGS)
  4256 AC_SUBST(EXTRA_CFLAGS)
  4257 AC_SUBST(BUILD_LDFLAGS)
  4258 AC_SUBST(EXTRA_LDFLAGS)
  4259 AC_SUBST(WINDRES)
  4260 AC_SUBST(WAYLAND_SCANNER)
  4261 
  4262 cat >Makefile.rules <<__EOF__
  4263 
  4264 # Build rules for objects
  4265 -include \$(OBJECTS:.lo=.d)
  4266 
  4267 # Special dependency for SDL.c, since it depends on SDL_revision.h
  4268 $srcdir/src/SDL.c: update-revision
  4269 $DEPENDS
  4270 $VERSION_DEPENDS
  4271 $SDLMAIN_DEPENDS
  4272 $SDLTEST_DEPENDS
  4273 $WAYLAND_PROTOCOLS_DEPENDS
  4274 __EOF__
  4275 
  4276 AC_CONFIG_FILES([
  4277     Makefile:Makefile.in:Makefile.rules sdl2-config sdl2-config.cmake SDL2.spec sdl2.pc
  4278 ])
  4279 AC_CONFIG_COMMANDS([sdl2_config],[chmod a+x sdl2-config])
  4280 
  4281 SUMMARY="SDL2 Configure Summary:\n"
  4282 if test x$enable_shared = xyes; then
  4283     SUMMARY="${SUMMARY}Building Shared Libraries\n"
  4284 fi
  4285 if test x$enable_static = xyes; then
  4286     SUMMARY="${SUMMARY}Building Static Libraries\n"
  4287 fi
  4288 SUMMARY="${SUMMARY}Enabled modules :${SUMMARY_modules}\n"
  4289 SUMMARY="${SUMMARY}Assembly Math   :${SUMMARY_math}\n" 
  4290 SUMMARY="${SUMMARY}Audio drivers   :${SUMMARY_audio}\n"
  4291 SUMMARY="${SUMMARY}Video drivers   :${SUMMARY_video}\n"
  4292 if test x$have_x = xyes; then
  4293     SUMMARY="${SUMMARY}X11 libraries   :${SUMMARY_video_x11}\n"
  4294 fi
  4295 SUMMARY="${SUMMARY}Input drivers   :${SUMMARY_input}\n"
  4296 if test x$have_samplerate_h_hdr = xyes; then
  4297     SUMMARY="${SUMMARY}Using libsamplerate : YES\n"
  4298 else
  4299     SUMMARY="${SUMMARY}Using libsamplerate : NO\n"
  4300 fi
  4301 if test x$have_libudev_h_hdr = xyes; then
  4302     SUMMARY="${SUMMARY}Using libudev       : YES\n"
  4303 else
  4304     SUMMARY="${SUMMARY}Using libudev       : NO\n"
  4305 fi
  4306 if test x$have_dbus_dbus_h_hdr = xyes; then
  4307     SUMMARY="${SUMMARY}Using dbus          : YES\n"
  4308 else
  4309     SUMMARY="${SUMMARY}Using dbus          : NO\n"
  4310 fi
  4311 if test x$enable_ime = xyes; then
  4312     SUMMARY="${SUMMARY}Using ime           : YES\n"
  4313 else
  4314     SUMMARY="${SUMMARY}Using ime           : NO\n"
  4315 fi
  4316 if test x$have_ibus_ibus_h_hdr = xyes; then
  4317     SUMMARY="${SUMMARY}Using ibus          : YES\n"
  4318 else
  4319     SUMMARY="${SUMMARY}Using ibus          : NO\n"
  4320 fi
  4321 if test x$have_fcitx_frontend_h_hdr = xyes; then
  4322     SUMMARY="${SUMMARY}Using fcitx         : YES\n"
  4323 else
  4324     SUMMARY="${SUMMARY}Using fcitx         : NO\n"
  4325 fi
  4326 
  4327 if test x$WARN_ABOUT_ARM_SIMD_ASM_MIT = xyes; then
  4328     SUMMARY="${SUMMARY}\nSDL is being built with ARM SIMD optimizations, which\n"
  4329     SUMMARY="${SUMMARY}uses code licensed under the MIT license. If this is a\n"
  4330     SUMMARY="${SUMMARY}problem, please disable that code by rerunning the\n"
  4331     SUMMARY="${SUMMARY}configure script with:\n"
  4332     SUMMARY="${SUMMARY}\n    --disable-arm-simd\n"
  4333 fi
  4334 
  4335 if test x$WARN_ABOUT_ARM_NEON_ASM_MIT = xyes; then
  4336     SUMMARY="${SUMMARY}\nSDL is being built with ARM NEON optimizations, which\n"
  4337     SUMMARY="${SUMMARY}uses code licensed under the MIT license. If this is a\n"
  4338     SUMMARY="${SUMMARY}problem, please disable that code by rerunning the\n"
  4339     SUMMARY="${SUMMARY}configure script with:\n"
  4340     SUMMARY="${SUMMARY}\n    --disable-arm-neon\n"
  4341 fi
  4342 
  4343 AC_CONFIG_COMMANDS([summary], [echo -en "$SUMMARY"], [SUMMARY="$SUMMARY"])
  4344 
  4345 AC_OUTPUT