configure.ac
author Sam Lantinga
Thu, 21 Nov 2019 10:09:26 -0800
changeset 13268 2e8d2420a63e
parent 13264 951801b5b148
child 13281 f8707178f3db
permissions -rw-r--r--
Turned on controllermap debug output by default
     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 $srcdir/src/joystick/hidapi/*.c"
  3318 
  3319             if test x$have_libusb_h = xyes; then
  3320                 EXTRA_CFLAGS="$EXTRA_CFLAGS $LIBUSB_CFLAGS"
  3321                 if test x$onlylibusb = xyes; then
  3322                     SOURCES="$SOURCES $srcdir/src/hidapi/libusb/hid.c"
  3323                     EXTRA_LDFLAGS="$EXTRA_LDFLAGS $LIBUSB_LIBS"
  3324                 else
  3325                     if test x$have_loadso != xyes; then
  3326                         AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic libusb loading])
  3327                     fi
  3328                     SOURCES="$SOURCES $srcdir/src/hidapi/SDL_hidapi.c"
  3329                     # libusb is loaded dynamically, so don't add it to LDFLAGS
  3330                     libusb_lib=""
  3331                     case "$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, "$libusb_lib", [ ])
  3343                 fi
  3344             else
  3345                 case "$host" in
  3346                 *-*-cygwin* | *-*-mingw32* )
  3347                     SOURCES="$SOURCES $srcdir/src/hidapi/windows/hid.c"
  3348                     ;;
  3349                 *-*-darwin* )
  3350                     SOURCES="$SOURCES $srcdir/src/hidapi/mac/hid.c"
  3351                     ;;
  3352                 esac
  3353             fi
  3354         fi
  3355 
  3356         AC_MSG_CHECKING(for hidapi support)
  3357         AC_MSG_RESULT($hidapi_support)
  3358     fi
  3359 }
  3360 
  3361 dnl Check for clock_gettime()
  3362 CheckClockGettime()
  3363 {
  3364     AC_ARG_ENABLE(clock_gettime,
  3365 AS_HELP_STRING([--enable-clock_gettime], [use clock_gettime() instead of gettimeofday() on UNIX [[default=yes]]]),
  3366                   , enable_clock_gettime=yes)
  3367     if test x$enable_clock_gettime = xyes; then
  3368         AC_CHECK_LIB(rt, clock_gettime, have_clock_gettime=yes)
  3369         if test x$have_clock_gettime = xyes; then
  3370             AC_DEFINE(HAVE_CLOCK_GETTIME, 1, [ ])
  3371             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lrt"
  3372         else
  3373             AC_CHECK_LIB(c, clock_gettime, have_clock_gettime=yes)
  3374             if test x$have_clock_gettime = xyes; then
  3375                AC_DEFINE(HAVE_CLOCK_GETTIME, 1, [ ])
  3376                EXTRA_LDFLAGS="$EXTRA_LDFLAGS"
  3377             fi
  3378         fi
  3379     fi
  3380 }
  3381 
  3382 dnl Check for a valid linux/version.h
  3383 CheckLinuxVersion()
  3384 {
  3385     AC_CHECK_HEADER(linux/version.h, have_linux_version_h=yes)
  3386     if test x$have_linux_version_h = xyes; then
  3387         EXTRA_CFLAGS="$EXTRA_CFLAGS -DHAVE_LINUX_VERSION_H"
  3388     fi
  3389 }
  3390 
  3391 dnl Check if we want to use RPATH
  3392 CheckRPATH()
  3393 {
  3394     AC_ARG_ENABLE(rpath,
  3395 AS_HELP_STRING([--enable-rpath], [use an rpath when linking SDL [[default=yes]]]),
  3396                   , enable_rpath=yes)
  3397 }
  3398 
  3399 dnl Check if we want to use custom signals to fake iOS/Android's backgrounding
  3400 dnl  events. These could be useful if you're building a custom embedded
  3401 dnl  environment, etc, but most people don't need this.
  3402 CheckEventSignals()
  3403 {
  3404     AC_ARG_ENABLE(backgrounding-signal,
  3405 AS_HELP_STRING([--enable-backgrounding-signal], [number to use for magic backgrounding signal or 'no' [[default=no]]]),
  3406                   , enable_backgrounding_signal=no)
  3407     if test x$enable_backgrounding_signal != xno; then
  3408         EXTRA_CFLAGS="$EXTRA_CFLAGS -DSDL_BACKGROUNDING_SIGNAL=$enable_backgrounding_signal"
  3409     fi
  3410 
  3411     AC_ARG_ENABLE(foregrounding-signal,
  3412 AS_HELP_STRING([--enable-foregrounding-signal], [number to use for magic foregrounding signal or 'no' [[default=no]]]),
  3413                   , enable_foregrounding_signal=no)
  3414     if test x$enable_foregrounding_signal != xno; then
  3415         EXTRA_CFLAGS="$EXTRA_CFLAGS -DSDL_FOREGROUNDING_SIGNAL=$enable_foregrounding_signal"
  3416     fi
  3417 }
  3418 
  3419 
  3420 
  3421 dnl Do this on all platforms, before everything else (other things might want to override it).
  3422 CheckWarnAll
  3423 CheckNoStrictAliasing
  3424 
  3425 dnl Do this for every platform, but for some it doesn't mean anything, but better to catch it here anyhow.
  3426 CheckEventSignals
  3427 
  3428 dnl Set up the configuration based on the host platform!
  3429 case "$host" in
  3430     *-*-linux*|*-*-uclinux*|*-*-gnu*|*-*-k*bsd*-gnu|*-*-bsdi*|*-*-freebsd*|*-*-dragonfly*|*-*-netbsd*|*-*-openbsd*|*-*-sysv5*|*-*-solaris*|*-*-hpux*|*-*-aix*|*-*-minix*|*-*-nto*)
  3431         case "$host" in
  3432             *-*-android*)
  3433                 # Android
  3434                 ARCH=android
  3435                 ANDROID_CFLAGS="-DGL_GLEXT_PROTOTYPES"
  3436                 CFLAGS="$CFLAGS $ANDROID_CFLAGS"
  3437                 SDL_CFLAGS="$SDL_CFLAGS $ANDROID_CFLAGS"
  3438                 EXTRA_CFLAGS="$EXTRA_CFLAGS $ANDROID_CFLAGS"
  3439                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS -ldl -lGLESv1_CM -lGLESv2 -llog -landroid"
  3440                 SDLMAIN_SOURCES="$srcdir/src/main/android/*.c"
  3441 
  3442                 if test x$enable_video = xyes; then
  3443                     SOURCES="$SOURCES $srcdir/src/core/android/*.c $srcdir/src/video/android/*.c"
  3444                     # FIXME: confdefs? Not AC_DEFINE?
  3445                     $as_echo "#define SDL_VIDEO_DRIVER_ANDROID 1" >>confdefs.h
  3446                     SUMMARY_video="${SUMMARY_video} android"
  3447                 fi
  3448                 ;;
  3449             *-*-linux*)         ARCH=linux ;;
  3450             *-*-uclinux*)       ARCH=linux ;;
  3451             *-*-kfreebsd*-gnu)  ARCH=kfreebsd-gnu ;;
  3452             *-*-knetbsd*-gnu)   ARCH=knetbsd-gnu ;;
  3453             *-*-kopenbsd*-gnu)  ARCH=kopenbsd-gnu ;;
  3454             *-*-gnu*)           ARCH=gnu ;; # must be last of the gnu variants
  3455             *-*-bsdi*)          ARCH=bsdi ;;
  3456             *-*-freebsd*)       ARCH=freebsd ;;
  3457             *-*-dragonfly*)     ARCH=freebsd ;;
  3458             *-*-netbsd*)        ARCH=netbsd ;;
  3459             *-*-openbsd*)       ARCH=openbsd ;;
  3460             *-*-sysv5*)         ARCH=sysv5 ;;
  3461             *-*-solaris*)       ARCH=solaris ;;
  3462             *-*-hpux*)          ARCH=hpux ;;
  3463             *-*-aix*)           ARCH=aix ;;
  3464             *-*-minix*)         ARCH=minix ;;
  3465             *-*-nto*)           ARCH=nto
  3466                 CheckQNXVideo
  3467                 ;;
  3468         esac
  3469         CheckVisibilityHidden
  3470         CheckDeclarationAfterStatement
  3471         CheckDummyVideo
  3472         CheckDiskAudio
  3473         CheckDummyAudio
  3474         CheckDLOPEN
  3475         CheckARM
  3476         CheckNEON
  3477         CheckOSS
  3478         CheckALSA
  3479         CheckPulseAudio
  3480         CheckJACK
  3481         CheckARTSC
  3482         CheckESD
  3483         CheckNAS
  3484         CheckSNDIO
  3485         CheckFusionSound
  3486         CheckLibSampleRate
  3487         # Need to check for Raspberry PI first and add platform specific compiler flags, otherwise the test for GLES fails!
  3488         CheckRPI
  3489         CheckX11
  3490         CheckDirectFB
  3491         CheckKMSDRM
  3492         CheckOpenGLX11
  3493         CheckOpenGLESX11
  3494         CheckVulkan
  3495         CheckWayland
  3496         CheckInputEvents
  3497         CheckLibUDev
  3498         CheckDBus
  3499         CheckIME
  3500         CheckIBus
  3501         CheckFcitx
  3502         case $ARCH in
  3503           linux)
  3504               CheckInputKD
  3505           ;;
  3506         esac
  3507         CheckTslib
  3508         CheckUSBHID
  3509         CheckHIDAPI
  3510         CheckPTHREAD
  3511         CheckClockGettime
  3512         CheckLinuxVersion
  3513         CheckRPATH
  3514         CheckVivanteVideo
  3515 
  3516         # Set up files for the audio library
  3517         if test x$enable_audio = xyes; then
  3518           case $ARCH in
  3519             sysv5|solaris|hpux)
  3520                 AC_DEFINE(SDL_AUDIO_DRIVER_SUNAUDIO, 1, [ ])
  3521                 SOURCES="$SOURCES $srcdir/src/audio/sun/*.c"
  3522                 SUMMARY_audio="${SUMMARY_audio} sun"
  3523                 have_audio=yes
  3524             ;;
  3525             netbsd)  # Don't use this on OpenBSD, it's busted.
  3526                 AC_DEFINE(SDL_AUDIO_DRIVER_NETBSD, 1, [ ])
  3527                 SOURCES="$SOURCES $srcdir/src/audio/netbsd/*.c"
  3528                 SUMMARY_audio="${SUMMARY_audio} netbsd"
  3529                 have_audio=yes
  3530             ;;
  3531             aix)
  3532                 AC_DEFINE(SDL_AUDIO_DRIVER_PAUDIO, 1, [ ])
  3533                 SOURCES="$SOURCES $srcdir/src/audio/paudio/*.c"
  3534                 SUMMARY_audio="${SUMMARY_audio} paudio"
  3535                 have_audio=yes
  3536             ;;
  3537             android)
  3538                 AC_DEFINE(SDL_AUDIO_DRIVER_ANDROID, 1, [ ])
  3539                 SOURCES="$SOURCES $srcdir/src/audio/android/*.c"
  3540                 SUMMARY_audio="${SUMMARY_audio} android"
  3541                 have_audio=yes
  3542             ;;
  3543             nto)
  3544                 CheckQNXAudio
  3545             ;;
  3546           esac
  3547         fi
  3548         # Set up files for the joystick library
  3549         if test x$enable_joystick = xyes; then
  3550           case $ARCH in
  3551             linux)
  3552                 AC_DEFINE(SDL_JOYSTICK_LINUX, 1, [ ])
  3553                 SOURCES="$SOURCES $srcdir/src/joystick/linux/*.c"
  3554                 SOURCES="$SOURCES $srcdir/src/joystick/steam/*.c"
  3555                 have_joystick=yes
  3556             ;;
  3557             android)
  3558                 AC_DEFINE(SDL_JOYSTICK_ANDROID, 1, [ ])
  3559                 SOURCES="$SOURCES $srcdir/src/joystick/android/*.c"
  3560                 SOURCES="$SOURCES $srcdir/src/joystick/steam/*.c"
  3561                 have_joystick=yes
  3562             ;;
  3563           esac
  3564         fi
  3565         # Set up files for the haptic library
  3566         if test x$enable_haptic = xyes; then
  3567           case $ARCH in
  3568             linux)
  3569                 if test x$use_input_events = xyes; then
  3570                     AC_DEFINE(SDL_HAPTIC_LINUX, 1, [ ])
  3571                     SOURCES="$SOURCES $srcdir/src/haptic/linux/*.c"
  3572                     have_haptic=yes
  3573                 fi
  3574             ;;
  3575             android)
  3576                 AC_DEFINE(SDL_HAPTIC_ANDROID, 1, [ ])
  3577                 SOURCES="$SOURCES $srcdir/src/haptic/android/*.c"
  3578                 have_haptic=yes
  3579             ;;
  3580           esac
  3581         fi
  3582         # Set up files for the sensor library
  3583         if test x$enable_sensor = xyes; then
  3584           case $ARCH in
  3585             android)
  3586                 AC_DEFINE(SDL_SENSOR_ANDROID, 1, [ ])
  3587                 SOURCES="$SOURCES $srcdir/src/sensor/android/*.c"
  3588                 have_sensor=yes
  3589             ;;
  3590           esac
  3591         fi
  3592         # Set up files for the power library
  3593         if test x$enable_power = xyes; then
  3594              case $ARCH in
  3595                linux)
  3596                    AC_DEFINE(SDL_POWER_LINUX, 1, [ ])
  3597                    SOURCES="$SOURCES $srcdir/src/power/linux/*.c"
  3598                    have_power=yes
  3599                ;;
  3600                android)
  3601                    AC_DEFINE(SDL_POWER_ANDROID, 1, [ ])
  3602                    SOURCES="$SOURCES $srcdir/src/power/android/*.c"
  3603                    have_power=yes
  3604                ;;
  3605              esac
  3606         fi
  3607         # Set up files for the filesystem library
  3608         if test x$enable_filesystem = xyes; then
  3609              case $ARCH in
  3610                android)
  3611                    AC_DEFINE(SDL_FILESYSTEM_ANDROID, 1, [ ])
  3612                    SOURCES="$SOURCES $srcdir/src/filesystem/android/*.c"
  3613                    have_filesystem=yes
  3614                ;;
  3615                *)
  3616                    AC_DEFINE(SDL_FILESYSTEM_UNIX, 1, [ ])
  3617                    SOURCES="$SOURCES $srcdir/src/filesystem/unix/*.c"
  3618                    have_filesystem=yes
  3619                ;;
  3620              esac
  3621         fi
  3622         # Set up files for the timer library
  3623         if test x$enable_timers = xyes; then
  3624             AC_DEFINE(SDL_TIMER_UNIX, 1, [ ])
  3625             SOURCES="$SOURCES $srcdir/src/timer/unix/*.c"
  3626             have_timers=yes
  3627         fi
  3628         # Set up files for udev hotplugging support
  3629         if test x$enable_libudev = xyes && test x$have_libudev_h_hdr = xyes; then
  3630             SOURCES="$SOURCES $srcdir/src/core/linux/SDL_udev.c"               
  3631         fi
  3632         # Set up files for evdev input
  3633         if test x$use_input_events = xyes; then
  3634             SOURCES="$SOURCES $srcdir/src/core/linux/SDL_evdev*.c"
  3635         fi       
  3636         # Set up other core UNIX files
  3637         SOURCES="$SOURCES $srcdir/src/core/linux/SDL_threadprio.c"
  3638         SOURCES="$SOURCES $srcdir/src/core/unix/*.c"
  3639         ;;
  3640     *-*-cygwin* | *-*-mingw32*)
  3641         ARCH=win32
  3642         if test "$build" != "$host"; then # cross-compiling
  3643             # Default cross-compile location
  3644             ac_default_prefix=/usr/local/cross-tools/$host
  3645         else
  3646             # Look for the location of the tools and install there
  3647             if test "$BUILD_PREFIX" != ""; then
  3648                 ac_default_prefix=$BUILD_PREFIX
  3649             fi
  3650         fi
  3651         CheckDeclarationAfterStatement
  3652         CheckDummyVideo
  3653         CheckDiskAudio
  3654         CheckDummyAudio
  3655         CheckWINDOWS
  3656         CheckWINDOWSGL
  3657         CheckWINDOWSGLES
  3658         CheckVulkan
  3659         CheckDIRECTX
  3660         CheckHIDAPI
  3661 
  3662         # Set up the core platform files
  3663         SOURCES="$SOURCES $srcdir/src/core/windows/*.c"
  3664 
  3665         # Set up files for the video library
  3666         if test x$enable_video = xyes; then
  3667             AC_DEFINE(SDL_VIDEO_DRIVER_WINDOWS, 1, [ ])
  3668             SOURCES="$SOURCES $srcdir/src/video/windows/*.c"
  3669             have_video=yes
  3670             AC_ARG_ENABLE(render-d3d,
  3671 AS_HELP_STRING([--enable-render-d3d], [enable the Direct3D render driver [[default=yes]]]),
  3672                                 , enable_render_d3d=yes)
  3673             if test x$enable_render_d3d = xyes -a x$have_d3d = xyes; then
  3674                 AC_DEFINE(SDL_VIDEO_RENDER_D3D, 1, [ ])
  3675                 SUMMARY_video="${SUMMARY_video} d3d9"
  3676             fi
  3677             if test x$enable_render_d3d = xyes -a x$have_d3d11 = xyes; then
  3678                 AC_DEFINE(SDL_VIDEO_RENDER_D3D11, 1, [ ])
  3679                 SUMMARY_video="${SUMMARY_video} d3d11"
  3680             fi
  3681         fi
  3682         # Set up files for the audio library
  3683         if test x$enable_audio = xyes; then
  3684             AC_DEFINE(SDL_AUDIO_DRIVER_WINMM, 1, [ ])
  3685             SUMMARY_audio="${SUMMARY_audio} winmm"
  3686             SOURCES="$SOURCES $srcdir/src/audio/winmm/*.c"
  3687             if test x$have_dsound = xyes; then
  3688                 AC_DEFINE(SDL_AUDIO_DRIVER_DSOUND, 1, [ ])
  3689                 SUMMARY_audio="${SUMMARY_audio} directsound"
  3690                 SOURCES="$SOURCES $srcdir/src/audio/directsound/*.c"
  3691             fi
  3692             if test x$have_wasapi = xyes -a x$enable_wasapi = xyes; then
  3693                 AC_DEFINE(SDL_AUDIO_DRIVER_WASAPI, 1, [ ])
  3694                 SUMMARY_audio="${SUMMARY_audio} wasapi"
  3695                 SOURCES="$SOURCES $srcdir/src/audio/wasapi/*.c"
  3696             fi
  3697             have_audio=yes
  3698         fi
  3699         # Set up files for the joystick library
  3700         if test x$enable_joystick = xyes; then
  3701             if test x$have_dinput = xyes -o x$have_xinput = xyes; then
  3702                 if test x$have_xinput = xyes; then
  3703                     AC_DEFINE(SDL_JOYSTICK_XINPUT, 1, [ ])
  3704                 fi
  3705                 if test x$have_dinput = xyes; then
  3706                     AC_DEFINE(SDL_JOYSTICK_DINPUT, 1, [ ])
  3707                     EXTRA_LDFLAGS="$EXTRA_LDFLAGS -ldinput8 -ldxguid -ldxerr8"
  3708                 fi
  3709             else
  3710                 AC_DEFINE(SDL_JOYSTICK_WINMM, 1, [ ])
  3711             fi
  3712             SOURCES="$SOURCES $srcdir/src/joystick/windows/*.c"
  3713             have_joystick=yes
  3714         fi
  3715         if test x$enable_haptic = xyes; then
  3716             if test x$have_dinput = xyes -o x$have_xinput = xyes; then
  3717                 if test x$have_xinput = xyes; then
  3718                     AC_DEFINE(SDL_HAPTIC_XINPUT, 1, [ ])
  3719                 fi
  3720                 if test x$have_dinput = xyes; then
  3721                     AC_DEFINE(SDL_HAPTIC_DINPUT, 1, [ ])
  3722                 fi
  3723                 SOURCES="$SOURCES $srcdir/src/haptic/windows/*.c"
  3724                 have_haptic=yes
  3725             fi
  3726         fi
  3727         if test x$enable_power = xyes; then
  3728             AC_DEFINE(SDL_POWER_WINDOWS, 1, [ ])
  3729             SOURCES="$SOURCES $srcdir/src/power/windows/SDL_syspower.c"
  3730             have_power=yes
  3731         fi
  3732         if test x$enable_filesystem = xyes; then
  3733             AC_DEFINE(SDL_FILESYSTEM_WINDOWS, 1, [ ])
  3734             SOURCES="$SOURCES $srcdir/src/filesystem/windows/SDL_sysfilesystem.c"
  3735             have_filesystem=yes
  3736         fi
  3737         # Set up files for the thread library
  3738         if test x$enable_threads = xyes; then
  3739             AC_DEFINE(SDL_THREAD_WINDOWS, 1, [ ])
  3740             SOURCES="$SOURCES $srcdir/src/thread/windows/*.c"
  3741             SOURCES="$SOURCES $srcdir/src/thread/generic/SDL_syscond.c"
  3742             have_threads=yes
  3743         fi
  3744         # Set up files for the timer library
  3745         if test x$enable_timers = xyes; then
  3746             AC_DEFINE(SDL_TIMER_WINDOWS, 1, [ ])
  3747             SOURCES="$SOURCES $srcdir/src/timer/windows/*.c"
  3748             have_timers=yes
  3749         fi
  3750         # Set up files for the shared object loading library
  3751         if test x$enable_loadso = xyes; then
  3752             AC_DEFINE(SDL_LOADSO_WINDOWS, 1, [ ])
  3753             SOURCES="$SOURCES $srcdir/src/loadso/windows/*.c"
  3754             have_loadso=yes
  3755         fi
  3756         # Set up the system libraries we need
  3757         if test -f /lib/w32api/libuuid.a; then
  3758             LIBUUID=/lib/w32api/libuuid.a
  3759         else
  3760             LIBUUID=-luuid
  3761         fi
  3762         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -luser32 -lgdi32 -lwinmm -limm32 -lole32 -loleaut32 -lshell32 -lsetupapi -lversion $LIBUUID -static-libgcc"
  3763         # The Windows platform requires special setup
  3764         VERSION_SOURCES="$srcdir/src/main/windows/*.rc"
  3765         SDLMAIN_SOURCES="$srcdir/src/main/windows/*.c"
  3766         SDL_CFLAGS="$SDL_CFLAGS -Dmain=SDL_main"
  3767         SDL_LIBS="-lSDL2main $SDL_LIBS -mwindows"
  3768 
  3769         # Check to see if this is a mingw or cygwin build
  3770         have_mingw32=
  3771         AC_CHECK_LIB(mingw32, main, [have_mingw32=yes])
  3772         if test x$have_mingw32 = xyes; then
  3773             SDL_LIBS="-lmingw32 $SDL_LIBS"
  3774         else
  3775             SDL_LIBS="-lcygwin $SDL_LIBS"
  3776         fi
  3777         ;;
  3778 
  3779     dnl BeOS support removed after SDL 2.0.1. Haiku still works.  --ryan.
  3780     *-*-beos*)
  3781         AC_MSG_ERROR([
  3782 *** BeOS support has been removed as of SDL 2.0.2.
  3783         ])
  3784         ;;
  3785 
  3786     *-*-haiku*)
  3787         ARCH=haiku
  3788         ac_default_prefix=/boot/system
  3789         CheckDummyVideo
  3790         CheckDiskAudio
  3791         CheckDummyAudio
  3792         CheckDLOPEN
  3793         CheckHaikuVideo
  3794         CheckHaikuGL
  3795         CheckPTHREAD
  3796 
  3797         # Set up files for the audio library
  3798         if test x$enable_audio = xyes; then
  3799             AC_DEFINE(SDL_AUDIO_DRIVER_HAIKU, 1, [ ])
  3800             SOURCES="$SOURCES $srcdir/src/audio/haiku/*.cc"
  3801             SUMMARY_audio="${SUMMARY_audio} haiku"
  3802             have_audio=yes
  3803         fi
  3804         # Set up files for the joystick library
  3805         if test x$enable_joystick = xyes; then
  3806             AC_DEFINE(SDL_JOYSTICK_HAIKU, 1, [ ])
  3807             SOURCES="$SOURCES $srcdir/src/joystick/haiku/*.cc"
  3808             have_joystick=yes
  3809         fi
  3810         # Set up files for the timer library
  3811         if test x$enable_timers = xyes; then
  3812             AC_DEFINE(SDL_TIMER_HAIKU, 1, [ ])
  3813             SOURCES="$SOURCES $srcdir/src/timer/haiku/*.c"
  3814             have_timers=yes
  3815         fi
  3816         # Set up files for the system power library
  3817         if test x$enable_power = xyes; then
  3818             AC_DEFINE(SDL_POWER_HAIKU, 1, [ ])
  3819             SOURCES="$SOURCES $srcdir/src/power/haiku/*.c"
  3820             have_power=yes
  3821         fi
  3822         # Set up files for the system filesystem library
  3823         if test x$enable_filesystem = xyes; then
  3824             AC_DEFINE(SDL_FILESYSTEM_HAIKU, 1, [ ])
  3825             SOURCES="$SOURCES $srcdir/src/filesystem/haiku/*.cc"
  3826             have_filesystem=yes
  3827         fi
  3828         # The Haiku platform requires special setup.
  3829         SOURCES="$srcdir/src/main/haiku/*.cc $SOURCES"
  3830         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lroot -lbe -lmedia -lgame -ldevice -ltextencoding"
  3831         # Haiku's x86 spins use libstdc++.r4.so (for binary compat?), but
  3832         #  other spins, like x86-64, use a more standard "libstdc++.so.*"
  3833         AC_CHECK_FILE("/boot/system/lib/libstdc++.r4.so", EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lstdc++.r4", EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lstdc++")
  3834         ;;
  3835     arm*-apple-darwin*|*-ios-*)
  3836         ARCH=ios
  3837 
  3838         CheckVisibilityHidden
  3839         CheckDeclarationAfterStatement
  3840         CheckDummyVideo
  3841         CheckDiskAudio
  3842         CheckDummyAudio
  3843         CheckDLOPEN
  3844         CheckMETAL
  3845         CheckVulkan
  3846         CheckPTHREAD
  3847 
  3848         # Set up files for the audio library
  3849         if test x$enable_audio = xyes; then
  3850             AC_DEFINE(SDL_AUDIO_DRIVER_COREAUDIO, 1, [ ])
  3851             SOURCES="$SOURCES $srcdir/src/audio/coreaudio/*.m"
  3852             SUMMARY_audio="${SUMMARY_audio} coreaudio"
  3853             have_audio=yes
  3854         fi
  3855         # Set up files for the joystick library
  3856         if test x$enable_joystick = xyes; then
  3857             AC_DEFINE(SDL_JOYSTICK_MFI, 1, [ ])
  3858             SOURCES="$SOURCES $srcdir/src/joystick/iphoneos/*.m"
  3859             SOURCES="$SOURCES $srcdir/src/joystick/steam/*.c"
  3860             have_joystick=yes
  3861         fi
  3862         # Set up files for the haptic library
  3863         #if test x$enable_haptic = xyes; then
  3864         #    SOURCES="$SOURCES $srcdir/src/haptic/darwin/*.c"
  3865         #    have_haptic=yes
  3866         #    EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,ForceFeedback"
  3867         #fi
  3868         # Set up files for the power library
  3869         if test x$enable_power = xyes; then
  3870             AC_DEFINE(SDL_POWER_UIKIT, 1, [ ])
  3871             SOURCES="$SOURCES $srcdir/src/power/uikit/*.m"
  3872             have_power=yes
  3873         fi
  3874         # Set up files for the filesystem library
  3875         if test x$enable_filesystem = xyes; then
  3876             SOURCES="$SOURCES $srcdir/src/filesystem/cocoa/*.m"
  3877             have_filesystem=yes
  3878         fi
  3879         # Set up additional files for the file library
  3880         if test x$enable_file = xyes; then
  3881             AC_DEFINE(SDL_FILESYSTEM_COCOA, 1, [ ])
  3882             SOURCES="$SOURCES $srcdir/src/file/cocoa/*.m"
  3883         fi
  3884         # Set up files for the timer library
  3885         if test x$enable_timers = xyes; then
  3886             AC_DEFINE(SDL_TIMER_UNIX, 1, [ ])
  3887             SOURCES="$SOURCES $srcdir/src/timer/unix/*.c"
  3888             have_timers=yes
  3889         fi
  3890         # Set up other core UNIX files
  3891         SOURCES="$SOURCES $srcdir/src/core/unix/*.c"
  3892         # The iOS platform requires special setup.
  3893         AC_DEFINE(SDL_VIDEO_DRIVER_UIKIT, 1, [ ])
  3894         AC_DEFINE(SDL_VIDEO_OPENGL_ES2, 1, [ ])
  3895         AC_DEFINE(SDL_VIDEO_OPENGL_ES, 1, [ ])
  3896         AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES, 1, [ ])
  3897         AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES2, 1, [ ])
  3898         SOURCES="$SOURCES $srcdir/src/video/uikit/*.m"
  3899         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lm -liconv -lobjc"
  3900         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,AVFoundation"
  3901         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,AudioToolbox"
  3902         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,CoreAudio"
  3903         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,CoreGraphics"
  3904         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,CoreMotion"
  3905         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,Foundation"
  3906         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,GameController"
  3907         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,OpenGLES"
  3908         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,QuartzCore"
  3909         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,UIKit"
  3910 
  3911         if test x$enable_video_metal = xyes -o x$enable_video_vulkan = xyes; then
  3912             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,Metal"
  3913         fi
  3914         ;;
  3915     *-*-darwin* )
  3916         # This could be either full "Mac OS X", or plain "Darwin" which is
  3917         # just the OS X kernel sans upper layers like Carbon and Cocoa.
  3918         # Next line is broken, and a few files below require Mac OS X (full)
  3919         ARCH=macosx
  3920 
  3921         # Mac OS X builds with both the Carbon and OSX APIs at the moment
  3922         EXTRA_CFLAGS="$EXTRA_CFLAGS -DTARGET_API_MAC_CARBON"
  3923         EXTRA_CFLAGS="$EXTRA_CFLAGS -DTARGET_API_MAC_OSX"
  3924 
  3925         CheckVisibilityHidden
  3926         CheckDeclarationAfterStatement
  3927         CheckDummyVideo
  3928         CheckDiskAudio
  3929         CheckDummyAudio
  3930         CheckDLOPEN
  3931         CheckCOCOA
  3932         CheckMETAL
  3933         CheckX11
  3934         CheckMacGL
  3935         CheckMacGLES
  3936         CheckOpenGLX11
  3937         CheckVulkan
  3938         CheckPTHREAD
  3939         CheckHIDAPI
  3940 
  3941         # Set up files for the audio library
  3942         if test x$enable_audio = xyes; then
  3943             AC_DEFINE(SDL_AUDIO_DRIVER_COREAUDIO, 1, [ ])
  3944             SOURCES="$SOURCES $srcdir/src/audio/coreaudio/*.m"
  3945             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,CoreAudio -Wl,-framework,AudioToolbox"
  3946             SUMMARY_audio="${SUMMARY_audio} coreaudio"
  3947             have_audio=yes
  3948         fi
  3949         # Set up files for the joystick library
  3950         if test x$enable_joystick = xyes; then
  3951             AC_DEFINE(SDL_JOYSTICK_IOKIT, 1, [ ])
  3952             SOURCES="$SOURCES $srcdir/src/joystick/darwin/*.c"
  3953             have_joystick=yes
  3954         fi
  3955         # Set up files for the haptic library
  3956         if test x$enable_haptic = xyes; then
  3957             AC_DEFINE(SDL_HAPTIC_IOKIT, 1, [ ])
  3958             SOURCES="$SOURCES $srcdir/src/haptic/darwin/*.c"
  3959             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,ForceFeedback"
  3960             have_haptic=yes
  3961         fi
  3962         # Set up files for the power library
  3963         if test x$enable_power = xyes; then
  3964             AC_DEFINE(SDL_POWER_MACOSX, 1, [ ])
  3965             SOURCES="$SOURCES $srcdir/src/power/macosx/*.c"
  3966             have_power=yes
  3967         fi
  3968         # Set up files for the filesystem library
  3969         if test x$enable_filesystem = xyes; then
  3970             AC_DEFINE(SDL_FILESYSTEM_COCOA, 1, [ ])
  3971             SOURCES="$SOURCES $srcdir/src/filesystem/cocoa/*.m"
  3972             have_filesystem=yes
  3973         fi
  3974         # Set up files for the timer library
  3975         if test x$enable_timers = xyes; then
  3976             AC_DEFINE(SDL_TIMER_UNIX, 1, [ ])
  3977             SOURCES="$SOURCES $srcdir/src/timer/unix/*.c"
  3978             have_timers=yes
  3979         fi
  3980         # Set up additional files for the file library
  3981         if test x$enable_file = xyes; then
  3982             SOURCES="$SOURCES $srcdir/src/file/cocoa/*.m"
  3983         fi
  3984         # Set up other core UNIX files
  3985         SOURCES="$SOURCES $srcdir/src/core/unix/*.c"
  3986         # The Mac OS X platform requires special setup.
  3987         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lobjc"
  3988         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,CoreVideo"
  3989         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,Cocoa"
  3990         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,Carbon"
  3991         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,IOKit"
  3992 
  3993         if test x$enable_video_metal = xyes -o x$enable_video_vulkan = xyes; then
  3994             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-weak_framework,QuartzCore -Wl,-weak_framework,Metal"
  3995         fi
  3996         ;;
  3997     *-nacl|*-pnacl)
  3998         ARCH=nacl
  3999         CheckNativeClient
  4000         CheckDummyAudio
  4001         CheckDummyVideo
  4002         CheckInputEvents
  4003         CheckPTHREAD
  4004 
  4005         # Set up files for the timer library
  4006         if test x$enable_timers = xyes; then
  4007             AC_DEFINE(SDL_TIMER_UNIX, 1, [ ])
  4008             SOURCES="$SOURCES $srcdir/src/timer/unix/*.c"
  4009             have_timers=yes
  4010         fi
  4011         
  4012         if test x$enable_filesystem = xyes; then
  4013             AC_DEFINE(SDL_FILESYSTEM_NACL, 1, [ ])
  4014             SOURCES="$SOURCES $srcdir/src/filesystem/nacl/*.c"
  4015             have_filesystem=yes
  4016         fi
  4017         ;;
  4018     *-*-emscripten* )
  4019         if test x$enable_video = xyes; then
  4020             AC_DEFINE(SDL_VIDEO_DRIVER_EMSCRIPTEN, 1, [ ])
  4021             SOURCES="$SOURCES $srcdir/src/video/emscripten/*.c"
  4022             have_video=yes
  4023             SUMMARY_video="${SUMMARY_video} emscripten"
  4024         fi
  4025 
  4026         if test x$enable_audio = xyes; then
  4027             AC_DEFINE(SDL_AUDIO_DRIVER_EMSCRIPTEN, 1, [ ])
  4028             SOURCES="$SOURCES $srcdir/src/audio/emscripten/*.c"
  4029             have_audio=yes
  4030             SUMMARY_audio="${SUMMARY_audio} emscripten"
  4031         fi
  4032 
  4033         CheckVisibilityHidden
  4034         CheckDeclarationAfterStatement
  4035         CheckDummyVideo
  4036         CheckDiskAudio
  4037         CheckDummyAudio
  4038         CheckDLOPEN
  4039         CheckClockGettime
  4040         CheckEmscriptenGLES
  4041 
  4042          # Set up files for the power library
  4043         if test x$enable_power = xyes; then
  4044             AC_DEFINE(SDL_POWER_EMSCRIPTEN, 1, [ ])
  4045             SOURCES="$SOURCES $srcdir/src/power/emscripten/*.c"
  4046             have_power=yes
  4047         fi
  4048         
  4049         # Set up files for the power library
  4050         if test x$enable_joystick = xyes; then
  4051             AC_DEFINE(SDL_JOYSTICK_EMSCRIPTEN, 1, [ ])
  4052             SOURCES="$SOURCES $srcdir/src/joystick/emscripten/*.c"
  4053             have_joystick=yes
  4054         fi
  4055 
  4056         # Set up files for the filesystem library
  4057         if test x$enable_filesystem = xyes; then
  4058             AC_DEFINE(SDL_FILESYSTEM_EMSCRIPTEN, 1, [ ])
  4059             SOURCES="$SOURCES $srcdir/src/filesystem/emscripten/*.c"
  4060             have_filesystem=yes
  4061         fi
  4062         # Set up files for the timer library
  4063         if test x$enable_timers = xyes; then
  4064             AC_DEFINE(SDL_TIMER_UNIX, 1, [ ])
  4065             SOURCES="$SOURCES $srcdir/src/timer/unix/*.c"
  4066             have_timers=yes
  4067         fi
  4068         ;;
  4069     *)
  4070         AC_MSG_ERROR([
  4071 *** Unsupported host:  Please add to configure.ac
  4072         ])
  4073         ;;
  4074 esac
  4075 
  4076 # Check whether to install sdl2-config
  4077 AC_MSG_CHECKING(whether to install sdl2-config)
  4078 AC_ARG_ENABLE([sdl2-config],
  4079     AS_HELP_STRING([--enable-sdl2-config], [Install sdl2-config [default=yes]]),
  4080     [case "${enableval}" in
  4081         yes) enable_sdl2_config="TRUE" ;;
  4082         no) enable_sdl2_config="FALSE" ;;
  4083         *) AC_MSG_ERROR([bad value '${enableval}' for --enable-sdl2-config]) ;;
  4084     esac], [enable_sdl2_config="TRUE"])
  4085 if test "$enable_sdl2_config" = "TRUE"; then
  4086     AC_MSG_RESULT(yes)
  4087 else
  4088     AC_MSG_RESULT(no)
  4089 fi
  4090 AC_SUBST([INSTALL_SDL2_CONFIG], [$enable_sdl2_config])
  4091 
  4092 # Verify that we have all the platform specific files we need
  4093 
  4094 if test x$have_joystick != xyes; then
  4095     if test x$enable_joystick = xyes; then
  4096         AC_DEFINE(SDL_JOYSTICK_DUMMY, 1, [ ])
  4097     fi
  4098     SOURCES="$SOURCES $srcdir/src/joystick/dummy/*.c"
  4099 fi
  4100 if test x$have_haptic != xyes; then
  4101     if test x$enable_haptic = xyes; then
  4102         AC_DEFINE(SDL_HAPTIC_DUMMY, 1, [ ])
  4103     fi
  4104     SOURCES="$SOURCES $srcdir/src/haptic/dummy/*.c"
  4105 fi
  4106 if test x$have_sensor != xyes; then
  4107     if test x$enable_sensor = xyes; then
  4108         AC_DEFINE(SDL_SENSOR_DUMMY, 1, [ ])
  4109     fi
  4110     SOURCES="$SOURCES $srcdir/src/sensor/dummy/*.c"
  4111 fi
  4112 if test x$have_threads != xyes; then
  4113     if test x$enable_threads = xyes; then
  4114         AC_DEFINE(SDL_THREADS_DISABLED, 1, [ ])
  4115     fi
  4116     SOURCES="$SOURCES $srcdir/src/thread/generic/*.c"
  4117 fi
  4118 if test x$have_timers != xyes; then
  4119     if test x$enable_timers = xyes; then
  4120         AC_DEFINE(SDL_TIMERS_DISABLED, 1, [ ])
  4121     fi
  4122     SOURCES="$SOURCES $srcdir/src/timer/dummy/*.c"
  4123 fi
  4124 if test x$have_filesystem != xyes; then
  4125     if test x$enable_filesystem = xyes; then
  4126         AC_DEFINE(SDL_FILESYSTEM_DISABLED, 1, [ ])
  4127     fi
  4128     SOURCES="$SOURCES $srcdir/src/filesystem/dummy/*.c"
  4129 fi
  4130 if test x$have_loadso != xyes; then
  4131     if test x$enable_loadso = xyes; then
  4132         AC_DEFINE(SDL_LOADSO_DISABLED, 1, [ ])
  4133     fi
  4134     SOURCES="$SOURCES $srcdir/src/loadso/dummy/*.c"
  4135 fi
  4136 if test x$SDLMAIN_SOURCES = x; then
  4137     SDLMAIN_SOURCES="$srcdir/src/main/dummy/*.c"
  4138 fi
  4139 SDLTEST_SOURCES="$srcdir/src/test/*.c"
  4140 
  4141 if test x$video_wayland = xyes; then
  4142     WAYLAND_PROTOCOLS=`cd $srcdir/wayland-protocols ; for p in *.xml ; do echo -n "\$p" |sed 's,\\.xml\$, ,g' ; done`
  4143     WAYLAND_PROTOCOLS_SOURCES=`for p in $WAYLAND_PROTOCOLS ; do echo -n "\\$(gen)/\$p-protocol.c " ; done`
  4144     WAYLAND_PROTOCOLS_HEADERS=`for p in $WAYLAND_PROTOCOLS ; do echo -n "\\$(gen)/\$p-client-protocol.h " ; done`
  4145     GEN_SOURCES="$GEN_SOURCES $WAYLAND_PROTOCOLS_SOURCES"
  4146     GEN_HEADERS="$GEN_HEADERS $WAYLAND_PROTOCOLS_HEADERS"
  4147 
  4148     WAYLAND_PROTOCOLS_DEPENDS=`for p in $WAYLAND_PROTOCOLS ; do\
  4149         echo ;\
  4150         echo "\\$(gen)/\$p-client-protocol.h: \\$(srcdir)/wayland-protocols/\$p.xml" ;\
  4151         echo "	@\\$(SHELL) \\$(auxdir)/mkinstalldirs \\$(gen)" ;\
  4152         echo "	\\$(RUN_CMD_GEN)\\$(WAYLAND_SCANNER) client-header \\$< \\$@" ;\
  4153         echo ;\
  4154         echo "\\$(gen)/\$p-protocol.c: \\$(srcdir)/wayland-protocols/\$p.xml" ;\
  4155         echo "	@\\$(SHELL) \\$(auxdir)/mkinstalldirs \\$(gen)" ;\
  4156         echo "	\\$(RUN_CMD_GEN)\\$(WAYLAND_SCANNER) code \\$< \\$@" ;\
  4157         echo ;\
  4158         echo "\\$(objects)/\$p-protocol.lo: \\$(gen)/\$p-protocol.c \\$(gen)/\$p-client-protocol.h" ;\
  4159         echo "	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@" ;\
  4160         done ;\
  4161         echo ;\
  4162         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`
  4163 fi
  4164 
  4165 OBJECTS=`echo $SOURCES`
  4166 DEPENDS=`echo $SOURCES | tr ' ' '\n'`
  4167 for EXT in asm cc m c S; do
  4168     OBJECTS=`echo "$OBJECTS" | sed 's,[[^ ]]*/\([[^ ]]*\)\.'$EXT',$(objects)/\1.lo,g'`
  4169     DEPENDS=`echo "$DEPENDS" | sed "s,^\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.$EXT\\$,\\\\
  4170 \\$(objects)/\\2.lo: \\1/\\2.$EXT \\$(objects)/.created\\\\
  4171 	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@,g"`
  4172 done
  4173 
  4174 GEN_OBJECTS=`echo "$GEN_SOURCES" | sed 's,[[^ ]]*/\([[^ ]]*\)\.c,$(objects)/\1.lo,g'`
  4175 
  4176 VERSION_OBJECTS=`echo $VERSION_SOURCES`
  4177 VERSION_DEPENDS=`echo $VERSION_SOURCES`
  4178 VERSION_OBJECTS=`echo "$VERSION_OBJECTS" | sed 's,[[^ ]]*/\([[^ ]]*\)\.rc,$(objects)/\1.o,g'`
  4179 VERSION_DEPENDS=`echo "$VERSION_DEPENDS" | sed "s,\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.rc,\\\\
  4180 \\$(objects)/\\2.o: \\1/\\2.rc \\$(objects)/.created\\\\
  4181 	\\$(WINDRES) \\$< \\$@,g"`
  4182 
  4183 SDLMAIN_OBJECTS=`echo $SDLMAIN_SOURCES`
  4184 SDLMAIN_DEPENDS=`echo $SDLMAIN_SOURCES`
  4185 SDLMAIN_OBJECTS=`echo "$SDLMAIN_OBJECTS" | sed 's,[[^ ]]*/\([[^ ]]*\)\.c,$(objects)/\1.lo,g'`
  4186 SDLMAIN_DEPENDS=`echo "$SDLMAIN_DEPENDS" | sed "s,\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.c,\\\\
  4187 \\$(objects)/\\2.lo: \\1/\\2.c \\$(objects)/.created\\\\
  4188 	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@,g"`
  4189 
  4190 SDLTEST_OBJECTS=`echo $SDLTEST_SOURCES`
  4191 SDLTEST_DEPENDS=`echo $SDLTEST_SOURCES`
  4192 SDLTEST_OBJECTS=`echo "$SDLTEST_OBJECTS" | sed 's,[[^ ]]*/\([[^ ]]*\)\.c,$(objects)/\1.lo,g'`
  4193 SDLTEST_DEPENDS=`echo "$SDLTEST_DEPENDS" | sed "s,\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.c,\\\\
  4194 \\$(objects)/\\2.lo: \\1/\\2.c \\$(objects)/.created\\\\
  4195 	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@,g"`
  4196 
  4197 # Set runtime shared library paths as needed
  4198 
  4199 if test "x$enable_rpath" = "xyes"; then
  4200   if test $ARCH = bsdi -o $ARCH = freebsd -o $ARCH = linux -o $ARCH = netbsd; then
  4201     SDL_RLD_FLAGS="-Wl,-rpath,\${libdir}"
  4202 
  4203     AC_MSG_CHECKING(for linker option --enable-new-dtags)
  4204     have_enable_new_dtags=no
  4205     save_LDFLAGS="$LDFLAGS"
  4206     LDFLAGS="$LDFLAGS -Wl,--enable-new-dtags"
  4207     AC_TRY_LINK([
  4208     ],[
  4209     ],[
  4210     have_enable_new_dtags=yes
  4211     SDL_RLD_FLAGS="$SDL_RLD_FLAGS -Wl,--enable-new-dtags"
  4212     ])
  4213     LDFLAGS="$save_LDFLAGS"
  4214     AC_MSG_RESULT($have_enable_new_dtags)
  4215   fi
  4216   if test $ARCH = solaris; then
  4217     SDL_RLD_FLAGS="-R\${libdir}"
  4218   fi
  4219 else
  4220   SDL_RLD_FLAGS=""
  4221 fi
  4222 
  4223 SDL_STATIC_LIBS="$SDL_LIBS $EXTRA_LDFLAGS"
  4224 
  4225 dnl Expand the cflags and libraries needed by apps using SDL
  4226 AC_SUBST(SDL_CFLAGS)
  4227 AC_SUBST(SDL_LIBS)
  4228 AC_SUBST(SDL_STATIC_LIBS)
  4229 AC_SUBST(SDL_RLD_FLAGS)
  4230 if test x$enable_shared = xyes; then
  4231     ENABLE_SHARED_TRUE=
  4232     ENABLE_SHARED_FALSE="#"
  4233 else
  4234     ENABLE_SHARED_TRUE="#"
  4235     ENABLE_SHARED_FALSE=
  4236 fi
  4237 if test x$enable_static = xyes; then
  4238     ENABLE_STATIC_TRUE=
  4239     ENABLE_STATIC_FALSE="#"
  4240 else
  4241     ENABLE_STATIC_TRUE="#"
  4242     ENABLE_STATIC_FALSE=
  4243 fi
  4244 AC_SUBST(ENABLE_SHARED_TRUE)
  4245 AC_SUBST(ENABLE_SHARED_FALSE)
  4246 AC_SUBST(ENABLE_STATIC_TRUE)
  4247 AC_SUBST(ENABLE_STATIC_FALSE)
  4248 
  4249 dnl Expand the sources and objects needed to build the library
  4250 AC_SUBST(ac_aux_dir)
  4251 AC_SUBST(INCLUDE)
  4252 AC_SUBST(OBJECTS)
  4253 AC_SUBST(GEN_HEADERS)
  4254 AC_SUBST(GEN_OBJECTS)
  4255 AC_SUBST(VERSION_OBJECTS)
  4256 AC_SUBST(SDLMAIN_OBJECTS)
  4257 AC_SUBST(SDLTEST_OBJECTS)
  4258 AC_SUBST(BUILD_CFLAGS)
  4259 AC_SUBST(EXTRA_CFLAGS)
  4260 AC_SUBST(BUILD_LDFLAGS)
  4261 AC_SUBST(EXTRA_LDFLAGS)
  4262 AC_SUBST(WINDRES)
  4263 AC_SUBST(WAYLAND_SCANNER)
  4264 
  4265 cat >Makefile.rules <<__EOF__
  4266 
  4267 # Build rules for objects
  4268 -include \$(OBJECTS:.lo=.d)
  4269 
  4270 # Special dependency for SDL.c, since it depends on SDL_revision.h
  4271 $srcdir/src/SDL.c: update-revision
  4272 $DEPENDS
  4273 $VERSION_DEPENDS
  4274 $SDLMAIN_DEPENDS
  4275 $SDLTEST_DEPENDS
  4276 $WAYLAND_PROTOCOLS_DEPENDS
  4277 __EOF__
  4278 
  4279 AC_CONFIG_FILES([
  4280     Makefile:Makefile.in:Makefile.rules sdl2-config sdl2-config.cmake SDL2.spec sdl2.pc
  4281 ])
  4282 AC_CONFIG_COMMANDS([sdl2_config],[chmod a+x sdl2-config])
  4283 
  4284 SUMMARY="SDL2 Configure Summary:\n"
  4285 if test x$enable_shared = xyes; then
  4286     SUMMARY="${SUMMARY}Building Shared Libraries\n"
  4287 fi
  4288 if test x$enable_static = xyes; then
  4289     SUMMARY="${SUMMARY}Building Static Libraries\n"
  4290 fi
  4291 SUMMARY="${SUMMARY}Enabled modules :${SUMMARY_modules}\n"
  4292 SUMMARY="${SUMMARY}Assembly Math   :${SUMMARY_math}\n" 
  4293 SUMMARY="${SUMMARY}Audio drivers   :${SUMMARY_audio}\n"
  4294 SUMMARY="${SUMMARY}Video drivers   :${SUMMARY_video}\n"
  4295 if test x$have_x = xyes; then
  4296     SUMMARY="${SUMMARY}X11 libraries   :${SUMMARY_video_x11}\n"
  4297 fi
  4298 SUMMARY="${SUMMARY}Input drivers   :${SUMMARY_input}\n"
  4299 if test x$have_samplerate_h_hdr = xyes; then
  4300     SUMMARY="${SUMMARY}Using libsamplerate : YES\n"
  4301 else
  4302     SUMMARY="${SUMMARY}Using libsamplerate : NO\n"
  4303 fi
  4304 if test x$have_libudev_h_hdr = xyes; then
  4305     SUMMARY="${SUMMARY}Using libudev       : YES\n"
  4306 else
  4307     SUMMARY="${SUMMARY}Using libudev       : NO\n"
  4308 fi
  4309 if test x$have_dbus_dbus_h_hdr = xyes; then
  4310     SUMMARY="${SUMMARY}Using dbus          : YES\n"
  4311 else
  4312     SUMMARY="${SUMMARY}Using dbus          : NO\n"
  4313 fi
  4314 if test x$enable_ime = xyes; then
  4315     SUMMARY="${SUMMARY}Using ime           : YES\n"
  4316 else
  4317     SUMMARY="${SUMMARY}Using ime           : NO\n"
  4318 fi
  4319 if test x$have_ibus_ibus_h_hdr = xyes; then
  4320     SUMMARY="${SUMMARY}Using ibus          : YES\n"
  4321 else
  4322     SUMMARY="${SUMMARY}Using ibus          : NO\n"
  4323 fi
  4324 if test x$have_fcitx_frontend_h_hdr = xyes; then
  4325     SUMMARY="${SUMMARY}Using fcitx         : YES\n"
  4326 else
  4327     SUMMARY="${SUMMARY}Using fcitx         : NO\n"
  4328 fi
  4329 
  4330 if test x$WARN_ABOUT_ARM_SIMD_ASM_MIT = xyes; then
  4331     SUMMARY="${SUMMARY}\nSDL is being built with ARM SIMD optimizations, which\n"
  4332     SUMMARY="${SUMMARY}uses code licensed under the MIT license. If this is a\n"
  4333     SUMMARY="${SUMMARY}problem, please disable that code by rerunning the\n"
  4334     SUMMARY="${SUMMARY}configure script with:\n"
  4335     SUMMARY="${SUMMARY}\n    --disable-arm-simd\n"
  4336 fi
  4337 
  4338 if test x$WARN_ABOUT_ARM_NEON_ASM_MIT = xyes; then
  4339     SUMMARY="${SUMMARY}\nSDL is being built with ARM NEON optimizations, which\n"
  4340     SUMMARY="${SUMMARY}uses code licensed under the MIT license. If this is a\n"
  4341     SUMMARY="${SUMMARY}problem, please disable that code by rerunning the\n"
  4342     SUMMARY="${SUMMARY}configure script with:\n"
  4343     SUMMARY="${SUMMARY}\n    --disable-arm-neon\n"
  4344 fi
  4345 
  4346 AC_CONFIG_COMMANDS([summary], [echo -en "$SUMMARY"], [SUMMARY="$SUMMARY"])
  4347 
  4348 AC_OUTPUT