configure.ac
author Ryan C. Gordon <icculus@icculus.org>
Mon, 08 Jul 2019 16:08:16 -0400
changeset 12931 881705583f45
parent 12899 11cb5d784a3a
child 12974 0fef4b21fa1d
permissions -rw-r--r--
configure: Windows and macOS now respect --enable-hidapi.

(and it defaults to "yes" on those platforms. Other places, which use libusb,
still default to no because they probably need root permissions to work.)
     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="$CFLAGS"
     9 
    10 dnl Set various version strings - taken gratefully from the GTk sources
    11 #
    12 # Making releases:
    13 # Edit include/SDL_version.h and change the version, then:
    14 #   SDL_MICRO_VERSION += 1;
    15 #   SDL_INTERFACE_AGE += 1;
    16 #   SDL_BINARY_AGE += 1;
    17 # if any functions have been added, set SDL_INTERFACE_AGE to 0.
    18 # if backwards compatibility has been broken,
    19 # set SDL_BINARY_AGE and SDL_INTERFACE_AGE to 0.
    20 #
    21 SDL_MAJOR_VERSION=2
    22 SDL_MINOR_VERSION=0
    23 SDL_MICRO_VERSION=10
    24 SDL_INTERFACE_AGE=0
    25 SDL_BINARY_AGE=10
    26 SDL_VERSION=$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$ac_cv_func_strtod = xyes; then
   327         AC_DEFINE(HAVE_STRTOD, 1, [ ])
   328     fi
   329     AC_CHECK_FUNC(mprotect,
   330         AC_TRY_COMPILE([
   331           #include <sys/types.h>
   332           #include <sys/mman.h>
   333         ],[
   334         ],[
   335         AC_DEFINE(HAVE_MPROTECT, 1, [ ])
   336         ]),
   337     )
   338     AC_CHECK_FUNCS(malloc calloc realloc free getenv setenv putenv unsetenv qsort abs bcopy memset memcpy memmove wcslen wcscmp strlen strlcpy strlcat _strrev _strupr _strlwr strchr strrchr strstr itoa _ltoa _uitoa _ultoa strtol strtoul _i64toa _ui64toa strtoll strtoull atoi atof strcmp strncmp _stricmp strcasecmp _strnicmp strncasecmp vsscanf vsnprintf fopen64 fseeko fseeko64 sigaction setjmp nanosleep sysconf sysctlbyname getauxval poll _Exit)
   339 
   340     AC_CHECK_LIB(m, pow, [LIBS="$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="$EXTRA_LDFLAGS -lsamplerate"
  1301             fi
  1302         fi
  1303     fi
  1304 }
  1305 
  1306 dnl See if GCC's -fvisibility=hidden is supported (gcc4 and later, usually).
  1307 dnl  Details of this flag are here: http://gcc.gnu.org/wiki/Visibility
  1308 CheckVisibilityHidden()
  1309 {
  1310     AC_MSG_CHECKING(for GCC -fvisibility=hidden option)
  1311     have_gcc_fvisibility=no
  1312 
  1313     visibility_CFLAGS="-fvisibility=hidden"
  1314     save_CFLAGS="$CFLAGS"
  1315     CFLAGS="$save_CFLAGS $visibility_CFLAGS -Werror"
  1316     AC_TRY_COMPILE([
  1317     #if !defined(__GNUC__) || __GNUC__ < 4
  1318     #error SDL only uses visibility attributes in GCC 4 or newer
  1319     #endif
  1320     ],[
  1321     ],[
  1322     have_gcc_fvisibility=yes
  1323     ])
  1324     AC_MSG_RESULT($have_gcc_fvisibility)
  1325     CFLAGS="$save_CFLAGS"
  1326 
  1327     if test x$have_gcc_fvisibility = xyes; then
  1328         EXTRA_CFLAGS="$EXTRA_CFLAGS $visibility_CFLAGS"
  1329     fi
  1330 }
  1331 
  1332 dnl See if GCC's -fno-strict-aliasingis supported.
  1333 dnl  Reference: https://bugzilla.libsdl.org/show_bug.cgi?id=4254
  1334 CheckNoStrictAliasing()
  1335 {
  1336     AC_MSG_CHECKING(for GCC -fno-strict-aliasing option)
  1337     have_gcc_no_strict_aliasing=no
  1338 
  1339     save_CFLAGS="$CFLAGS"
  1340     CFLAGS="$save_CFLAGS -fno-strict-aliasing"
  1341     AC_TRY_COMPILE([
  1342     int x = 0;
  1343     ],[
  1344     ],[
  1345     have_gcc_no_strict_aliasing=yes
  1346     ])
  1347     AC_MSG_RESULT($have_gcc_no_strict_aliasing)
  1348     CFLAGS="$save_CFLAGS"
  1349 
  1350     if test x$have_gcc_no_strict_aliasing = xyes; then
  1351         EXTRA_CFLAGS="$EXTRA_CFLAGS -fno-strict-aliasing"
  1352     fi
  1353 }
  1354 
  1355 dnl See if GCC's -mpreferred-stack-boundary is supported.
  1356 dnl  Reference: http://bugzilla.libsdl.org/show_bug.cgi?id=1296
  1357 CheckStackBoundary()
  1358 {
  1359     AC_MSG_CHECKING(for GCC -mpreferred-stack-boundary option)
  1360     have_gcc_preferred_stack_boundary=no
  1361 
  1362     save_CFLAGS="$CFLAGS"
  1363     CFLAGS="$save_CFLAGS -mpreferred-stack-boundary=2"
  1364     AC_TRY_COMPILE([
  1365     int x = 0;
  1366     ],[
  1367     ],[
  1368     have_gcc_preferred_stack_boundary=yes
  1369     ])
  1370     AC_MSG_RESULT($have_gcc_preferred_stack_boundary)
  1371     CFLAGS="$save_CFLAGS"
  1372 
  1373     if test x$have_gcc_preferred_stack_boundary = xyes; then
  1374         EXTRA_CFLAGS="$EXTRA_CFLAGS -mpreferred-stack-boundary=2"
  1375     fi
  1376 }
  1377 
  1378 dnl See if GCC's -Wdeclaration-after-statement is supported.
  1379 dnl  This lets us catch things that would fail on a C89 compiler when using
  1380 dnl  a modern GCC.
  1381 CheckDeclarationAfterStatement()
  1382 {
  1383     AC_MSG_CHECKING(for GCC -Wdeclaration-after-statement option)
  1384     have_gcc_declaration_after_statement=no
  1385 
  1386     save_CFLAGS="$CFLAGS"
  1387     CFLAGS="$save_CFLAGS -Wdeclaration-after-statement -Werror=declaration-after-statement"
  1388     AC_TRY_COMPILE([
  1389     int x = 0;
  1390     ],[
  1391     ],[
  1392     have_gcc_declaration_after_statement=yes
  1393     ])
  1394     AC_MSG_RESULT($have_gcc_declaration_after_statement)
  1395     CFLAGS="$save_CFLAGS"
  1396 
  1397     if test x$have_gcc_declaration_after_statement = xyes; then
  1398         EXTRA_CFLAGS="$EXTRA_CFLAGS -Wdeclaration-after-statement -Werror=declaration-after-statement"
  1399     fi
  1400 }
  1401 
  1402 dnl See if GCC's -Wall is supported.
  1403 CheckWarnAll()
  1404 {
  1405     AC_MSG_CHECKING(for GCC -Wall option)
  1406     have_gcc_Wall=no
  1407 
  1408     save_CFLAGS="$CFLAGS"
  1409     CFLAGS="$save_CFLAGS -Wall"
  1410     AC_TRY_COMPILE([
  1411     int x = 0;
  1412     ],[
  1413     ],[
  1414     have_gcc_Wall=yes
  1415     ])
  1416     AC_MSG_RESULT($have_gcc_Wall)
  1417     CFLAGS="$save_CFLAGS"
  1418 
  1419     if test x$have_gcc_Wall = xyes; then
  1420         EXTRA_CFLAGS="$EXTRA_CFLAGS -Wall"
  1421 
  1422         dnl Haiku headers use multicharacter constants all over the place. Ignore these warnings when using -Wall.
  1423         AC_MSG_CHECKING(for necessary GCC -Wno-multichar option)
  1424         need_gcc_Wno_multichar=no
  1425         case "$host" in
  1426             *-*-haiku*)
  1427                 need_gcc_Wno_multichar=yes
  1428                 ;;
  1429         esac
  1430         AC_MSG_RESULT($need_gcc_Wno_multichar)
  1431         if test x$need_gcc_Wno_multichar = xyes; then
  1432             EXTRA_CFLAGS="$EXTRA_CFLAGS -Wno-multichar"
  1433         fi
  1434     fi
  1435 }
  1436 
  1437 dnl Check for Wayland
  1438 CheckWayland()
  1439 {
  1440     AC_ARG_ENABLE(video-wayland,
  1441 AS_HELP_STRING([--enable-video-wayland], [use Wayland video driver [[default=yes]]]),
  1442                   ,enable_video_wayland=yes)
  1443 
  1444     AC_ARG_ENABLE(video-wayland-qt-touch,
  1445 AS_HELP_STRING([--enable-video-wayland-qt-touch], [QtWayland server support for Wayland video driver [[default=yes]]]),
  1446                   ,enable_video_wayland_qt_touch=yes)
  1447 
  1448     if test x$enable_video = xyes -a x$enable_video_wayland = xyes; then
  1449         AC_MSG_CHECKING(for Wayland support)
  1450         video_wayland=no
  1451         if  test x$video_opengl_egl = xyes && \
  1452             test x$video_opengles_v2 = xyes; then
  1453             if $PKG_CONFIG --exists wayland-client wayland-scanner wayland-protocols wayland-egl wayland-cursor egl xkbcommon ; then
  1454                 WAYLAND_CFLAGS=`$PKG_CONFIG --cflags wayland-client wayland-egl wayland-cursor xkbcommon`
  1455                 WAYLAND_LIBS=`$PKG_CONFIG --libs wayland-client wayland-egl wayland-cursor xkbcommon`
  1456                 WAYLAND_SCANNER=`$PKG_CONFIG --variable=wayland_scanner wayland-scanner`
  1457                 video_wayland=yes
  1458             fi
  1459         fi
  1460         AC_MSG_RESULT($video_wayland)
  1461 
  1462         if test x$video_wayland = xyes; then
  1463             AC_DEFINE(SDL_VIDEO_DRIVER_WAYLAND, 1, [ ])
  1464             if test x$enable_video_wayland_qt_touch = xyes; then
  1465                 AC_DEFINE(SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH, 1, [ ])
  1466             fi
  1467 
  1468             WAYLAND_SOURCES="$srcdir/src/video/wayland/*.c"
  1469             SOURCES="$SOURCES $WAYLAND_SOURCES"
  1470             EXTRA_CFLAGS="$EXTRA_CFLAGS $WAYLAND_CFLAGS -I\$(gen)"
  1471             AC_ARG_ENABLE(wayland-shared,
  1472 AS_HELP_STRING([--enable-wayland-shared], [dynamically load Wayland support [[default=maybe]]]),
  1473                           , enable_wayland_shared=maybe)
  1474 
  1475             dnl FIXME: Do BSD and OS X need special cases?
  1476             case "$host" in
  1477                 *)
  1478                     wayland_client_lib=[`find_lib "libwayland-client.so.*" "$WAYLAND_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1479                     wayland_egl_lib=[`find_lib "libwayland-egl.so.*" "$WAYLAND_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1480                     if test x$wayland_egl_lib = x; then
  1481                         dnl This works in Ubuntu 13.10, maybe others
  1482                         wayland_egl_lib=[`find_lib "mesa-egl/libwayland-egl.so.*" "$WAYLAND_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1483                     fi
  1484                     wayland_cursor_lib=[`find_lib "libwayland-cursor.so.*" "$WAYLAND_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1485                     xkbcommon_lib=[`find_lib "libxkbcommon.so.*" "$WAYLAND_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1486                     ;;
  1487             esac
  1488 
  1489             if test x$enable_wayland_shared = xmaybe; then
  1490                 enable_wayland_shared=yes
  1491             fi
  1492             if test x$have_loadso != xyes && \
  1493                test x$enable_wayland_shared = xyes; then
  1494                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic Wayland loading])
  1495                 enable_wayland_shared=no
  1496             fi
  1497             if test x$have_loadso = xyes && \
  1498                test x$enable_wayland_shared = xyes && \
  1499                test x$wayland_client_lib != x && \
  1500                test x$wayland_egl_lib != x && \
  1501                test x$wayland_cursor_lib != x && \
  1502                test x$xkbcommon_lib != x; then
  1503                 echo "-- dynamic libwayland-client -> $wayland_client_lib"
  1504                 echo "-- dynamic libwayland-egl -> $wayland_egl_lib"
  1505                 echo "-- dynamic libwayland-cursor -> $wayland_cursor_lib"
  1506                 echo "-- dynamic libxkbcommon -> $xkbcommon_lib"
  1507                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC, "$wayland_client_lib", [ ])
  1508                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_EGL, "$wayland_egl_lib", [ ])
  1509                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_CURSOR, "$wayland_cursor_lib", [ ])
  1510                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_XKBCOMMON, "$xkbcommon_lib", [ ])
  1511                 SUMMARY_video="${SUMMARY_video} wayland(dynamic)"
  1512             else
  1513                 enable_wayland_shared=no
  1514                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $WAYLAND_LIBS"
  1515                 SUMMARY_video="${SUMMARY_video} wayland"
  1516             fi
  1517             have_video=yes
  1518         fi
  1519     fi
  1520 }
  1521 
  1522 
  1523 dnl Check for Native Client stuff
  1524 CheckNativeClient()
  1525 {
  1526         AC_TRY_COMPILE([
  1527           #if !defined(__native_client__)
  1528           #error "NO NACL"
  1529           #endif
  1530         ],[
  1531         ],[
  1532         AC_DEFINE(SDL_VIDEO_DRIVER_NACL, 1, [ ])
  1533         AC_DEFINE(SDL_AUDIO_DRIVER_NACL, 1, [ ])
  1534         AC_DEFINE(HAVE_POW, 1, [ ])
  1535         AC_DEFINE(HAVE_OPENGLES2, 1, [ ])
  1536         AC_DEFINE(SDL_VIDEO_OPENGL_ES2, 1, [ ])
  1537         AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES2, 1, [ ])
  1538 
  1539         SDL_LIBS="-lppapi_simple -lppapi_gles2 $SDL_LIBS"
  1540 
  1541         SDLMAIN_SOURCES="$srcdir/src/main/nacl/*.c"
  1542         SOURCES="$SOURCES $srcdir/src/audio/nacl/*.c"
  1543         SUMMARY_audio="${SUMMARY_audio} nacl"
  1544         SOURCES="$SOURCES $srcdir/src/video/nacl/*.c"
  1545         SUMMARY_video="${SUMMARY_video} nacl opengles2"
  1546         ])
  1547 }
  1548 
  1549 
  1550 CheckRPI()
  1551 {
  1552     AC_ARG_ENABLE(video-rpi,
  1553 AS_HELP_STRING([--enable-video-rpi], [use Raspberry Pi video driver [[default=yes]]]),
  1554                   , enable_video_rpi=yes)
  1555     if test x$enable_video = xyes -a x$enable_video_rpi = xyes; then
  1556         PKG_CHECK_MODULES([RPI], [bcm_host brcmegl], video_rpi=yes, video_rpi=no)
  1557 
  1558         if test x$video_rpi = xno; then
  1559             if test x$ARCH = xnetbsd; then
  1560                 RPI_CFLAGS="-I/usr/pkg/include -I/usr/pkg/include/interface/vcos/pthreads -I/usr/pkg/include/interface/vmcs_host/linux"
  1561                 RPI_LIBS="-Wl,-R/usr/pkg/lib -L/usr/pkg/lib -lbcm_host"
  1562             else
  1563                 RPI_CFLAGS="-I/opt/vc/include -I/opt/vc/include/interface/vcos/pthreads -I/opt/vc/include/interface/vmcs_host/linux"
  1564                 RPI_LIBS="-Wl,-rpath,/opt/vc/lib -L/opt/vc/lib -lbcm_host"
  1565             fi
  1566         fi
  1567 
  1568         # Save the original compiler flags and libraries
  1569         ac_save_cflags="$CFLAGS"; ac_save_libs="$LIBS"
  1570 
  1571         # Add the Raspberry Pi compiler flags and libraries
  1572         CFLAGS="$CFLAGS $RPI_CFLAGS"; LIBS="$LIBS $RPI_LIBS"
  1573 
  1574         AC_MSG_CHECKING(for Raspberry Pi)
  1575         have_video_rpi=no
  1576         AC_TRY_LINK([
  1577           #include <bcm_host.h>
  1578         ],[
  1579           bcm_host_init();
  1580         ],[
  1581         have_video_rpi=yes
  1582         ],[
  1583         ])
  1584         AC_MSG_RESULT($have_video_rpi)
  1585 
  1586         # Restore the compiler flags and libraries
  1587         CFLAGS="$ac_save_cflags"; LIBS="$ac_save_libs"
  1588         
  1589         if test x$have_video_rpi = xyes; then
  1590             CFLAGS="$CFLAGS $RPI_CFLAGS"
  1591             SDL_CFLAGS="$SDL_CFLAGS $RPI_CFLAGS"
  1592             EXTRA_CFLAGS="$EXTRA_CFLAGS $RPI_CFLAGS"
  1593             EXTRA_LDFLAGS="$EXTRA_LDFLAGS $RPI_LIBS"
  1594             SOURCES="$SOURCES $srcdir/src/video/raspberry/*.c"
  1595             AC_DEFINE(SDL_VIDEO_DRIVER_RPI, 1, [ ])
  1596             SUMMARY_video="${SUMMARY_video} rpi"
  1597         fi
  1598     fi
  1599 }
  1600 
  1601 dnl Find the X11 include and library directories
  1602 CheckX11()
  1603 {
  1604     AC_ARG_ENABLE(video-x11,
  1605 AS_HELP_STRING([--enable-video-x11], [use X11 video driver [[default=yes]]]),
  1606                   , enable_video_x11=yes)
  1607     if test x$enable_video = xyes -a x$enable_video_x11 = xyes; then
  1608         case "$host" in
  1609             *-*-darwin*)
  1610                 # This isn't necessary for X11, but fixes GLX detection
  1611                 if test "x$x_includes" = xNONE && \
  1612                    test "x$x_libraries" = xNONE && \
  1613                    test -d /usr/X11R6/include && \
  1614                    test -d /usr/X11R6/lib; then
  1615                     x_includes="/usr/X11R6/include"
  1616                     x_libraries="/usr/X11R6/lib"
  1617                 fi
  1618                 ;;
  1619         esac
  1620         AC_PATH_X
  1621         AC_PATH_XTRA
  1622         if test x$have_x = xyes; then
  1623             AC_ARG_ENABLE(x11-shared,
  1624 AS_HELP_STRING([--enable-x11-shared], [dynamically load X11 support [[default=maybe]]]),
  1625                           , enable_x11_shared=maybe)
  1626 
  1627             case "$host" in
  1628                 *-*-darwin*)
  1629                     x11_lib='/usr/X11R6/lib/libX11.6.dylib'
  1630                     x11ext_lib='/usr/X11R6/lib/libXext.6.dylib'
  1631                     xcursor_lib='/usr/X11R6/lib/libXcursor.1.dylib'
  1632                     xinerama_lib='/usr/X11R6/lib/libXinerama.1.dylib'
  1633                     xinput_lib='/usr/X11R6/lib/libXi.6.dylib'
  1634                     xrandr_lib='/usr/X11R6/lib/libXrandr.2.dylib'
  1635                     xrender_lib='/usr/X11R6/lib/libXrender.1.dylib'
  1636                     xss_lib='/usr/X11R6/lib/libXss.1.dylib'
  1637                     xvidmode_lib='/usr/X11R6/lib/libXxf86vm.1.dylib'
  1638                     ;;
  1639                 *-*-openbsd*)
  1640                     x11_lib='libX11.so'
  1641                     x11ext_lib='libXext.so'
  1642                     xcursor_lib='libXcursor.so'
  1643                     xinerama_lib='libXinerama.so'
  1644                     xinput_lib='libXi.so'
  1645                     xrandr_lib='libXrandr.so'
  1646                     xrender_lib='libXrender.so'
  1647                     xss_lib='libXss.so'
  1648                     xvidmode_lib='libXxf86vm.so'
  1649                     ;;
  1650                 *)
  1651                     x11_lib=[`find_lib "libX11.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1652                     x11ext_lib=[`find_lib "libXext.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1653                     xcursor_lib=[`find_lib "libXcursor.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1654                     xinerama_lib=[`find_lib "libXinerama.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1655                     xinput_lib=[`find_lib "libXi.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1656                     xrandr_lib=[`find_lib "libXrandr.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1657                     xrender_lib=[`find_lib "libXrender.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1658                     xss_lib=[`find_lib "libXss.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1659                     xvidmode_lib=[`find_lib "libXxf86vm.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1660                     ;;
  1661             esac
  1662 
  1663             if test x$ac_cv_func_shmat != xyes; then
  1664                 X_CFLAGS="$X_CFLAGS -DNO_SHARED_MEMORY"
  1665             fi
  1666             CFLAGS="$CFLAGS $X_CFLAGS"
  1667             LDFLAGS="$LDFLAGS $X_LIBS"
  1668 
  1669             AC_CHECK_HEADER(X11/extensions/Xext.h,
  1670                             have_xext_h_hdr=yes,
  1671                             have_xext_h_hdr=no,
  1672                             [#include <X11/Xlib.h>
  1673                              #include <X11/Xproto.h>
  1674                             ])
  1675             if test x$have_xext_h_hdr != xyes; then
  1676                AC_MSG_ERROR([
  1677 *** Missing Xext.h, maybe you need to install the libxext-dev package?
  1678                ])
  1679             fi
  1680 
  1681             AC_DEFINE(SDL_VIDEO_DRIVER_X11, 1, [ ])
  1682             SOURCES="$SOURCES $srcdir/src/video/x11/*.c"
  1683             EXTRA_CFLAGS="$EXTRA_CFLAGS $X_CFLAGS"
  1684 
  1685             # Needed so SDL applications can include SDL_syswm.h
  1686             SDL_CFLAGS="$SDL_CFLAGS $X_CFLAGS"
  1687 
  1688             if test x$enable_x11_shared = xmaybe; then
  1689                 enable_x11_shared=yes
  1690             fi
  1691             if test x$have_loadso != xyes && \
  1692                test x$enable_x11_shared = xyes; then
  1693                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic X11 loading])
  1694                 enable_x11_shared=no
  1695             fi
  1696             if test x$have_loadso = xyes && \
  1697                test x$enable_x11_shared = xyes && test x$x11_lib != x && test x$x11ext_lib != x; then
  1698                 echo "-- dynamic libX11 -> $x11_lib"
  1699                 echo "-- dynamic libX11ext -> $x11ext_lib"
  1700                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC, "$x11_lib", [ ])
  1701                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT, "$x11ext_lib", [ ])
  1702                 SUMMARY_video="${SUMMARY_video} x11(dynamic)"
  1703             else
  1704                 enable_x11_shared=no
  1705                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $X_LIBS -lX11 -lXext"
  1706                 SUMMARY_video="${SUMMARY_video} x11"
  1707             fi
  1708             have_video=yes
  1709 
  1710             AC_MSG_CHECKING(for const parameter to XextAddDisplay)
  1711             have_const_param_XextAddDisplay=no
  1712             AC_TRY_COMPILE([
  1713               #include <X11/Xlib.h>
  1714               #include <X11/Xproto.h>
  1715               #include <X11/extensions/Xext.h>
  1716               #include <X11/extensions/extutil.h>
  1717               extern XExtDisplayInfo* XextAddDisplay(XExtensionInfo* a,Display* b,_Xconst char* c,XExtensionHooks* d,int e,XPointer f);
  1718             ],[
  1719             ],[
  1720             have_const_param_XextAddDisplay=yes
  1721             AC_DEFINE([SDL_VIDEO_DRIVER_X11_CONST_PARAM_XEXTADDDISPLAY], 1, [ ])
  1722             ])
  1723             AC_MSG_RESULT($have_const_param_XextAddDisplay)
  1724 
  1725             dnl AC_CHECK_LIB(X11, XGetEventData, AC_DEFINE(SDL_VIDEO_DRIVER_X11_SUPPORTS_GENERIC_EVENTS, 1, [Have XGenericEvent]))
  1726             AC_MSG_CHECKING([for XGenericEvent])
  1727             have_XGenericEvent=no
  1728             AC_TRY_COMPILE([
  1729                 #include <X11/Xlib.h>
  1730             ],[
  1731 Display *display;
  1732 XEvent event;
  1733 XGenericEventCookie *cookie = &event.xcookie;
  1734 XNextEvent(display, &event);
  1735 XGetEventData(display, cookie);
  1736 XFreeEventData(display, cookie);
  1737             ],[
  1738                 have_XGenericEvent=yes
  1739                 AC_DEFINE([SDL_VIDEO_DRIVER_X11_SUPPORTS_GENERIC_EVENTS], 1, [ ])
  1740             ])
  1741             AC_MSG_RESULT($have_XGenericEvent)
  1742 
  1743             AC_CHECK_LIB(X11, XkbKeycodeToKeysym, AC_DEFINE(SDL_VIDEO_DRIVER_X11_HAS_XKBKEYCODETOKEYSYM, 1, [Have XkbKeycodeToKeysym]))
  1744 
  1745             AC_ARG_ENABLE(video-x11-xcursor,
  1746 AS_HELP_STRING([--enable-video-x11-xcursor], [enable X11 Xcursor support [[default=yes]]]),
  1747                             , enable_video_x11_xcursor=yes)
  1748             if test x$enable_video_x11_xcursor = xyes; then
  1749                 definitely_enable_video_x11_xcursor=no
  1750                 AC_CHECK_HEADER(X11/Xcursor/Xcursor.h,
  1751                                 have_xcursor_h_hdr=yes,
  1752                                 have_xcursor_h_hdr=no,
  1753                                 [#include <X11/Xlib.h>
  1754                                 ])
  1755                 if test x$have_xcursor_h_hdr = xyes; then
  1756                     if test x$enable_x11_shared = xyes && test x$xcursor_lib != x ; then
  1757                         echo "-- dynamic libXcursor -> $xcursor_lib"
  1758                         AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XCURSOR, "$xcursor_lib", [ ])
  1759                         definitely_enable_video_x11_xcursor=yes
  1760                     else
  1761                         AC_CHECK_LIB(Xcursor, XcursorImageCreate, have_xcursor_lib=yes)
  1762                         if test x$have_xcursor_lib = xyes ; then
  1763                             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lXcursor"
  1764                             definitely_enable_video_x11_xcursor=yes
  1765                         fi
  1766                     fi
  1767                 fi
  1768             fi
  1769             if test x$definitely_enable_video_x11_xcursor = xyes; then
  1770                 AC_DEFINE(SDL_VIDEO_DRIVER_X11_XCURSOR, 1, [ ])
  1771                 SUMMARY_video_x11="${SUMMARY_video_x11} xcursor"
  1772             fi
  1773             AC_ARG_ENABLE(video-x11-xdbe,
  1774 AS_HELP_STRING([--enable-video-x11-xdbe], [enable X11 Xdbe support [[default=yes]]]),
  1775                             , enable_video_x11_xdbe=yes)
  1776             if test x$enable_video_x11_xdbe = xyes; then
  1777                 AC_CHECK_HEADER(X11/extensions/Xdbe.h,
  1778                                 have_dbe_h_hdr=yes,
  1779                                 have_dbe_h_hdr=no,
  1780                                 [#include <X11/Xlib.h>
  1781                                 ])
  1782                 if test x$have_dbe_h_hdr = xyes; then
  1783                     AC_DEFINE(SDL_VIDEO_DRIVER_X11_XDBE, 1, [ ])
  1784                     SUMMARY_video_x11="${SUMMARY_video_x11} xdbe"
  1785                 fi
  1786             fi
  1787             AC_ARG_ENABLE(video-x11-xinerama,
  1788 AS_HELP_STRING([--enable-video-x11-xinerama], [enable X11 Xinerama support [[default=yes]]]),
  1789                             , enable_video_x11_xinerama=yes)
  1790             if test x$enable_video_x11_xinerama = xyes; then
  1791                 definitely_enable_video_x11_xinerama=no
  1792                 AC_CHECK_HEADER(X11/extensions/Xinerama.h,
  1793                                 have_xinerama_h_hdr=yes,
  1794                                 have_xinerama_h_hdr=no,
  1795                                 [#include <X11/Xlib.h>
  1796                                 ])
  1797                 if test x$have_xinerama_h_hdr = xyes; then
  1798                     if test x$enable_x11_shared = xyes && test x$xinerama_lib != x ; then
  1799                         echo "-- dynamic libXinerama -> $xinerama_lib"
  1800                         AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XINERAMA, "$xinerama_lib", [ ])
  1801                         definitely_enable_video_x11_xinerama=yes
  1802                     else
  1803                         AC_CHECK_LIB(Xinerama, XineramaQueryExtension, have_xinerama_lib=yes)
  1804                         if test x$have_xinerama_lib = xyes ; then
  1805                             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lXinerama"
  1806                             definitely_enable_video_x11_xinerama=yes
  1807                         fi
  1808                     fi
  1809                 fi
  1810             fi
  1811             if test x$definitely_enable_video_x11_xinerama = xyes; then
  1812                 AC_DEFINE(SDL_VIDEO_DRIVER_X11_XINERAMA, 1, [ ])
  1813                 SUMMARY_video_x11="${SUMMARY_video_x11} xinerama"
  1814             fi
  1815             AC_ARG_ENABLE(video-x11-xinput,
  1816 AS_HELP_STRING([--enable-video-x11-xinput], [enable X11 XInput extension for manymouse, tablets, etc [[default=yes]]]),
  1817                             , enable_video_x11_xinput=yes)
  1818             if test x$enable_video_x11_xinput = xyes; then
  1819                 definitely_enable_video_x11_xinput=no
  1820                 AC_CHECK_HEADER(X11/extensions/XInput2.h,
  1821                                 have_xinput_h_hdr=yes,
  1822                                 have_xinput_h_hdr=no,
  1823                                 [#include <X11/Xlib.h>
  1824                                 ])
  1825                 if test x$have_xinput_h_hdr = xyes; then
  1826                     if test x$enable_x11_shared = xyes && test x$xinput_lib != x ; then
  1827                         echo "-- dynamic libXi -> $xinput_lib"
  1828                         AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XINPUT2, "$xinput_lib", [ ])
  1829                         definitely_enable_video_x11_xinput=yes
  1830                     else
  1831                         AC_CHECK_LIB(Xi, XOpenDevice, have_xinput_lib=yes)
  1832                         if test x$have_xinput_lib = xyes ; then
  1833                             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lXi"
  1834                             definitely_enable_video_x11_xinput=yes
  1835                         fi
  1836                     fi
  1837                 fi
  1838             fi
  1839             if test x$definitely_enable_video_x11_xinput = xyes; then
  1840                 SUMMARY_video_x11="${SUMMARY_video_x11} xinput2"
  1841                 AC_DEFINE(SDL_VIDEO_DRIVER_X11_XINPUT2, 1, [ ])
  1842                 AC_MSG_CHECKING(for xinput2 multitouch)
  1843                 have_xinput2_multitouch=no
  1844                 AC_TRY_COMPILE([
  1845                     #include <X11/Xlib.h>
  1846                     #include <X11/Xproto.h>
  1847                     #include <X11/extensions/XInput2.h>
  1848                     ],[
  1849 int event_type = XI_TouchBegin;
  1850 XITouchClassInfo *t;
  1851                     ],[
  1852                     have_xinput2_multitouch=yes
  1853                     AC_DEFINE([SDL_VIDEO_DRIVER_X11_XINPUT2_SUPPORTS_MULTITOUCH], 1, [])
  1854                     SUMMARY_video_x11="${SUMMARY_video_x11} xinput2_multitouch"
  1855                     ])
  1856                 AC_MSG_RESULT($have_xinput2_multitouch)
  1857             fi
  1858             AC_ARG_ENABLE(video-x11-xrandr,
  1859 AS_HELP_STRING([--enable-video-x11-xrandr], [enable X11 Xrandr extension for fullscreen [[default=yes]]]),
  1860                             , enable_video_x11_xrandr=yes)
  1861             if test x$enable_video_x11_xrandr = xyes; then
  1862                 dnl XRRScreenResources is only present in Xrandr >= 1.2, we use that as a test.
  1863                 definitely_enable_video_x11_xrandr=no
  1864                 have_xrandr_h_hdr=no
  1865                 AC_TRY_COMPILE([
  1866                 #include <X11/Xlib.h>
  1867                 #include <X11/extensions/Xrandr.h>
  1868                 ],[
  1869                 XRRScreenResources *res = NULL;
  1870                 ],[
  1871                 have_xrandr_h_hdr=yes
  1872                 ])
  1873                 if test x$have_xrandr_h_hdr = xyes; then
  1874                     if test x$enable_x11_shared = xyes && test x$xrandr_lib != x ; then
  1875                         echo "-- dynamic libXrandr -> $xrandr_lib"
  1876                         AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR, "$xrandr_lib", [ ])
  1877                         definitely_enable_video_x11_xrandr=yes
  1878                     else
  1879                         AC_CHECK_LIB(Xrandr, XRRQueryExtension, have_xrandr_lib=yes)
  1880                         if test x$have_xrandr_lib = xyes ; then
  1881                             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lXrandr"
  1882                             definitely_enable_video_x11_xrandr=yes
  1883                         fi
  1884                     fi
  1885                 fi
  1886             fi
  1887             if test x$definitely_enable_video_x11_xrandr = xyes; then
  1888                 AC_DEFINE(SDL_VIDEO_DRIVER_X11_XRANDR, 1, [ ])
  1889                 SUMMARY_video_x11="${SUMMARY_video_x11} xrandr"
  1890             fi
  1891             AC_ARG_ENABLE(video-x11-scrnsaver,
  1892 AS_HELP_STRING([--enable-video-x11-scrnsaver], [enable X11 screensaver extension [[default=yes]]]),
  1893                             , enable_video_x11_scrnsaver=yes)
  1894             if test x$enable_video_x11_scrnsaver = xyes; then
  1895                 AC_CHECK_HEADER(X11/extensions/scrnsaver.h,
  1896                                 have_scrnsaver_h_hdr=yes,
  1897                                 have_scrnsaver_h_hdr=no,
  1898                                 [#include <X11/Xlib.h>
  1899                                 ])
  1900                 if test x$have_scrnsaver_h_hdr = xyes; then
  1901                     if test x$enable_x11_shared = xyes && test x$xss_lib != x ; then
  1902                         echo "-- dynamic libXss -> $xss_lib"
  1903                         AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XSS, "$xss_lib", [ ])
  1904                         definitely_enable_video_x11_scrnsaver=yes
  1905                     else
  1906                         AC_CHECK_LIB(Xss, XScreenSaverSuspend, have_xss_lib=yes)
  1907                         if test x$have_xss_lib = xyes ; then
  1908                             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lXss"
  1909                             definitely_enable_video_x11_scrnsaver=yes
  1910                         fi
  1911                     fi
  1912                 fi
  1913             fi
  1914             if test x$definitely_enable_video_x11_scrnsaver = xyes; then
  1915                 AC_DEFINE(SDL_VIDEO_DRIVER_X11_XSCRNSAVER, 1, [ ])
  1916                 SUMMARY_video_x11="${SUMMARY_video_x11} xscrnsaver"
  1917             fi
  1918             AC_ARG_ENABLE(video-x11-xshape,
  1919 AS_HELP_STRING([--enable-video-x11-xshape], [enable X11 XShape support [[default=yes]]]),
  1920                             , enable_video_x11_xshape=yes)
  1921             if test x$enable_video_x11_xshape = xyes; then
  1922                 AC_CHECK_HEADER(X11/extensions/shape.h,
  1923                                 have_shape_h_hdr=yes,
  1924                                 have_shape_h_hdr=no,
  1925                                 [#include <X11/Xlib.h>
  1926                                 ])
  1927                 if test x$have_shape_h_hdr = xyes; then
  1928                     AC_DEFINE(SDL_VIDEO_DRIVER_X11_XSHAPE, 1, [ ])
  1929                     SUMMARY_video_x11="${SUMMARY_video_x11} xshape"
  1930                 fi
  1931             fi
  1932             AC_ARG_ENABLE(video-x11-vm,
  1933 AS_HELP_STRING([--enable-video-x11-vm], [use X11 VM extension for fullscreen [[default=yes]]]),
  1934                             , enable_video_x11_vm=yes)
  1935             if test x$enable_video_x11_vm = xyes; then
  1936                 definitely_enable_video_x11_vm=no
  1937                 AC_CHECK_HEADER(X11/extensions/xf86vmode.h,
  1938                                 have_vm_h_hdr=yes,
  1939                                 have_vm_h_hdr=no,
  1940                                 [#include <X11/Xlib.h>
  1941                                 ])
  1942                 if test x$have_vm_h_hdr = xyes; then
  1943                     if test x$enable_x11_shared = xyes && test x$xvidmode_lib != x ; then
  1944                         echo "-- dynamic libXxf86vm -> $xvidmode_lib"
  1945                         AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XVIDMODE, "$xvidmode_lib", [ ])
  1946                         definitely_enable_video_x11_vm=yes
  1947                     else
  1948                         AC_CHECK_LIB(Xxf86vm, XF86VidModeQueryVersion, have_vm_lib=yes)
  1949                         if test x$have_vm_lib = xyes ; then
  1950                             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lXxf86vm"
  1951                             definitely_enable_video_x11_vm=yes
  1952                         fi
  1953                     fi
  1954                 fi
  1955             fi
  1956             if test x$definitely_enable_video_x11_vm = xyes; then
  1957                 AC_DEFINE(SDL_VIDEO_DRIVER_X11_XVIDMODE, 1, [ ])
  1958                 SUMMARY_video_x11="${SUMMARY_video_x11} xvidmode"
  1959             fi
  1960         fi
  1961     fi
  1962 }
  1963 
  1964 dnl Set up the Vivante video driver if enabled
  1965 CheckVivanteVideo()
  1966 {
  1967     AC_ARG_ENABLE(video-vivante,
  1968 AS_HELP_STRING([--enable-video-vivante], [use Vivante EGL video driver [[default=yes]]]),
  1969                   , enable_video_vivante=yes)
  1970     if test x$enable_video = xyes -a x$enable_video_vivante = xyes; then
  1971         AC_MSG_CHECKING(for Vivante VDK API)
  1972         have_vivante_vdk=no
  1973         AC_TRY_COMPILE([
  1974           #define LINUX
  1975           #define EGL_API_FB
  1976           #include <gc_vdk.h>
  1977         ],[
  1978         ],[
  1979         have_vivante_vdk=yes
  1980         ])
  1981         AC_MSG_RESULT($have_vivante_vdk)
  1982 
  1983         AC_MSG_CHECKING(for Vivante FB API)
  1984         have_vivante_egl=no
  1985         AC_TRY_COMPILE([
  1986           #define LINUX
  1987           #define EGL_API_FB
  1988           #include <EGL/eglvivante.h>
  1989         ],[
  1990         ],[
  1991         have_vivante_egl=yes
  1992         ])
  1993         AC_MSG_RESULT($have_vivante_egl)
  1994 
  1995         if test x$have_vivante_vdk = xyes -o x$have_vivante_egl = xyes; then
  1996             AC_DEFINE(SDL_VIDEO_DRIVER_VIVANTE, 1, [ ])
  1997             EXTRA_CFLAGS="$EXTRA_CFLAGS -DLINUX -DEGL_API_FB"
  1998             if test x$have_vivante_vdk = xyes; then
  1999                 AC_DEFINE(SDL_VIDEO_DRIVER_VIVANTE_VDK, 1, [ ])
  2000                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lVDK"
  2001             fi
  2002             SOURCES="$SOURCES $srcdir/src/video/vivante/*.c"
  2003             SUMMARY_video="${SUMMARY_video} vivante"
  2004             have_video=yes
  2005         fi
  2006     fi
  2007 }
  2008 
  2009 dnl Set up the Haiku video driver if enabled
  2010 CheckHaikuVideo()
  2011 {
  2012     if test x$enable_video = xyes; then
  2013         AC_DEFINE(SDL_VIDEO_DRIVER_HAIKU, 1, [ ])
  2014         SOURCES="$SOURCES $srcdir/src/video/haiku/*.cc"
  2015         have_video=yes
  2016         SUMMARY_video="${SUMMARY_video} haiku"
  2017     fi
  2018 }
  2019 
  2020 dnl Set up the Cocoa video driver for Mac OS X (but not Darwin)
  2021 CheckCOCOA()
  2022 {
  2023     AC_ARG_ENABLE(video-cocoa,
  2024 AS_HELP_STRING([--enable-video-cocoa], [use Cocoa video driver [[default=yes]]]),
  2025                   , enable_video_cocoa=yes)
  2026     if test x$enable_video = xyes -a x$enable_video_cocoa = xyes; then
  2027         save_CFLAGS="$CFLAGS"
  2028         dnl Work around that we don't have Objective-C support in autoconf
  2029         CFLAGS="$CFLAGS -x objective-c"
  2030         AC_MSG_CHECKING(for Cocoa framework)
  2031         have_cocoa=no
  2032         AC_TRY_COMPILE([
  2033           #import <Cocoa/Cocoa.h>
  2034         ],[
  2035         ],[
  2036         have_cocoa=yes
  2037         ])
  2038         AC_MSG_RESULT($have_cocoa)
  2039         CFLAGS="$save_CFLAGS"
  2040         if test x$have_cocoa = xyes; then
  2041             AC_DEFINE(SDL_VIDEO_DRIVER_COCOA, 1, [ ])
  2042             SOURCES="$SOURCES $srcdir/src/video/cocoa/*.m"
  2043             SUMMARY_video="${SUMMARY_video} cocoa"
  2044             have_video=yes
  2045         fi
  2046     fi
  2047 }
  2048 
  2049 CheckMETAL()
  2050 {
  2051     AC_ARG_ENABLE(render-metal,
  2052 AS_HELP_STRING([--enable-render-metal], [enable the Metal render driver [[default=yes]]]),
  2053                                 , enable_render_metal=yes)
  2054     if test x$enable_render = xyes -a x$enable_render_metal = xyes; then
  2055         save_CFLAGS="$CFLAGS"
  2056         dnl Work around that we don't have Objective-C support in autoconf
  2057         CFLAGS="$CFLAGS -x objective-c"
  2058         AC_MSG_CHECKING(for Metal framework)
  2059         have_metal=no
  2060         AC_TRY_COMPILE([
  2061           #import <Cocoa/Cocoa.h>
  2062           #import <Metal/Metal.h>
  2063           #import <QuartzCore/CAMetalLayer.h>
  2064 
  2065           #if !TARGET_CPU_X86_64
  2066           #error Metal doesn't work on this configuration
  2067           #endif
  2068         ],[
  2069         ],[
  2070         have_metal=yes
  2071         ])
  2072         CFLAGS="$save_CFLAGS"
  2073         AC_MSG_RESULT($have_metal)
  2074         if test x$have_metal = xyes; then
  2075             AC_DEFINE(SDL_VIDEO_RENDER_METAL, 1, [ ])
  2076             SOURCES="$SOURCES $srcdir/src/render/metal/*.m"
  2077             SUMMARY_video="${SUMMARY_video} metal"
  2078         else
  2079             enable_render_metal=no
  2080         fi
  2081     fi
  2082 }
  2083 
  2084 
  2085 dnl Find DirectFB
  2086 CheckDirectFB()
  2087 {
  2088     AC_ARG_ENABLE(video-directfb,
  2089 AS_HELP_STRING([--enable-video-directfb], [use DirectFB video driver [[default=no]]]),
  2090                   , enable_video_directfb=no)
  2091     if test x$enable_video = xyes -a x$enable_video_directfb = xyes; then
  2092         PKG_CHECK_MODULES([DIRECTFB], [directfb >= 1.0.0], video_directfb=yes, video_directfb=no)
  2093 
  2094         if test x$video_directfb = xyes; then
  2095             # SuSE 11.1 installs directfb-config without directfb-devel
  2096             save_CPPFLAGS="$CPPFLAGS"
  2097             CPPFLAGS="$CPPFLAGS $DIRECTFB_CFLAGS"
  2098             AC_CHECK_HEADER(directfb.h, have_directfb_hdr=yes, have_directfb_hdr=no)
  2099             CPPFLAGS="$save_CPPFLAGS"
  2100             video_directfb=$have_directfb_hdr
  2101         fi
  2102 
  2103         if test x$video_directfb = xyes; then
  2104             AC_ARG_ENABLE(directfb-shared,
  2105 AS_HELP_STRING([--enable-directfb-shared], [dynamically load directfb support [[default=yes]]]),
  2106                               , enable_directfb_shared=yes)
  2107 
  2108             AC_DEFINE(SDL_VIDEO_DRIVER_DIRECTFB, 1, [ ])
  2109             AC_DEFINE(SDL_VIDEO_RENDER_DIRECTFB, 1, [ ])
  2110             SOURCES="$SOURCES $srcdir/src/video/directfb/*.c"
  2111             EXTRA_CFLAGS="$EXTRA_CFLAGS $DIRECTFB_CFLAGS"
  2112 
  2113             AC_MSG_CHECKING(for directfb dynamic loading support)
  2114             directfb_shared=no
  2115             directfb_lib=[`find_lib "libdirectfb*.so.*" "$DIRECTFB_LIBS"`]
  2116             # | sed 's/.*\/\(.*\)/\1/; q'`]
  2117 AC_MSG_WARN("directfb $directfb_lib")
  2118             if test x$have_loadso != xyes && \
  2119                test x$enable_directfb_shared = xyes; then
  2120                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic directfb loading])
  2121             fi
  2122             if test x$have_loadso = xyes && \
  2123                test x$enable_directfb_shared = xyes && test x$directfb_lib != x; then
  2124                 directfb_shared=yes
  2125                 echo "-- $directfb_lib_spec -> $directfb_lib"
  2126                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_DIRECTFB_DYNAMIC, "$directfb_lib", [ ])
  2127                 SUMMARY_video="${SUMMARY_video} directfb(dynamic)"
  2128             else
  2129                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $DIRECTFB_LIBS"
  2130                 SUMMARY_video="${SUMMARY_video} directfb"
  2131             fi
  2132             AC_MSG_RESULT($directfb_shared)
  2133             SDL_CFLAGS="$SDL_CFLAGS $DIRECTFB_CFLAGS"
  2134             have_video=yes
  2135         fi
  2136     fi
  2137 }
  2138 
  2139 dnl Find KMSDRM
  2140 CheckKMSDRM()
  2141 {
  2142     AC_ARG_ENABLE(video-kmsdrm,
  2143 AS_HELP_STRING([--enable-video-kmsdrm], [use KMSDRM video driver [[default=no]]]),
  2144                   , enable_video_kmsdrm=no)
  2145 
  2146     if test x$enable_video = xyes -a x$enable_video_kmsdrm = xyes; then
  2147         video_kmsdrm=no
  2148 
  2149         PKG_CHECK_MODULES([LIBDRM], [libdrm >= 2.4.46], libdrm_avail=yes, libdrm_avail=no)
  2150         PKG_CHECK_MODULES([LIBGBM], [gbm >= 9.0.0], libgbm_avail=yes, libgbm_avail=no)
  2151 
  2152         if test x$libdrm_avail = xyes -a x$libgbm_avail = xyes; then
  2153             video_kmsdrm=yes
  2154         fi
  2155 
  2156         if test x$video_kmsdrm = xyes; then
  2157             AC_ARG_ENABLE(kmsdrm-shared,
  2158 AS_HELP_STRING([--enable-kmsdrm-shared], [dynamically load kmsdrm support [[default=yes]]]),
  2159                 , enable_kmsdrm_shared=yes)
  2160 
  2161             AC_DEFINE(SDL_VIDEO_DRIVER_KMSDRM, 1, [ ])
  2162             SOURCES="$SOURCES $srcdir/src/video/kmsdrm/*.c"
  2163             EXTRA_CFLAGS="$EXTRA_CFLAGS $LIBDRM_CFLAGS $LIBGBM_CFLAGS"
  2164 
  2165             AC_MSG_CHECKING(for kmsdrm dynamic loading support)
  2166             kmsdrm_shared=no
  2167             drm_lib=[`find_lib "libdrm.so.*" "$DRM_LIBS"`]
  2168             gbm_lib=[`find_lib "libgbm.so.*" "$DRM_LIBS"`]
  2169             if test x$have_loadso != xyes && \
  2170                test x$enable_kmsdrm_shared = xyes; then
  2171                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic kmsdrm loading])
  2172             fi
  2173             if test x$have_loadso = xyes && \
  2174                test x$enable_kmsdrm_shared = xyes && test x$drm_lib != x && test x$gbm_lib != x; then
  2175                 kmsdrm_shared=yes
  2176                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_KMSDRM_DYNAMIC, "$drm_lib", [ ])
  2177                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_KMSDRM_DYNAMIC_GBM, "$gbm_lib", [ ])
  2178                 AC_DEFINE_UNQUOTED(HAVE_KMSDRM_SHARED, "TRUE", [ ])
  2179                 SUMMARY_video="${SUMMARY_video} kmsdrm(dynamic)"
  2180             else
  2181                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $LIBDRM_LIBS $LIBGBM_LIBS"
  2182                 SUMMARY_video="${SUMMARY_video} kmsdrm"
  2183             fi
  2184             AC_MSG_RESULT($kmsdrm_shared)
  2185             have_video=yes
  2186         fi
  2187     fi
  2188 }
  2189 
  2190 dnl rcg04172001 Set up the Null video driver.
  2191 CheckDummyVideo()
  2192 {
  2193     AC_ARG_ENABLE(video-dummy,
  2194 AS_HELP_STRING([--enable-video-dummy], [use dummy video driver [[default=yes]]]),
  2195                   , enable_video_dummy=yes)
  2196     if test x$enable_video_dummy = xyes; then
  2197         AC_DEFINE(SDL_VIDEO_DRIVER_DUMMY, 1, [ ])
  2198         SOURCES="$SOURCES $srcdir/src/video/dummy/*.c"
  2199         have_video=yes
  2200         SUMMARY_video="${SUMMARY_video} dummy"
  2201     fi
  2202 }
  2203 
  2204 dnl Set up the QNX video driver if enabled
  2205 CheckQNXVideo()
  2206 {
  2207     if test x$enable_video = xyes; then
  2208         AC_DEFINE(SDL_VIDEO_DRIVER_QNX, 1, [ ])
  2209         SOURCES="$SOURCES $srcdir/src/video/qnx/*.c"
  2210         have_video=yes
  2211         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lscreen -lEGL -lGLESv2"
  2212         SUMMARY_video="${SUMMARY_video} qnx"
  2213     fi
  2214 }
  2215 
  2216 dnl Set up the QNX audio driver if enabled
  2217 CheckQNXAudio()
  2218 {
  2219     if test x$enable_audio = xyes; then
  2220         AC_DEFINE(SDL_AUDIO_DRIVER_QSA, 1, [ ])
  2221         SOURCES="$SOURCES $srcdir/src/audio/qsa/*.c"
  2222         have_audio=yes
  2223         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lasound"
  2224         SUMMARY_audio="${SUMMARY_audio} qsa"
  2225     fi
  2226 }
  2227 
  2228 dnl Check to see if OpenGL support is desired
  2229 AC_ARG_ENABLE(video-opengl,
  2230 AS_HELP_STRING([--enable-video-opengl], [include OpenGL support [[default=yes]]]),
  2231               , enable_video_opengl=yes)
  2232 
  2233 dnl Find OpenGL
  2234 CheckOpenGLX11()
  2235 {
  2236     if test x$enable_video = xyes -a x$enable_video_opengl = xyes; then
  2237         AC_MSG_CHECKING(for OpenGL (GLX) support)
  2238         video_opengl=no
  2239         AC_TRY_COMPILE([
  2240          #include <GL/gl.h>
  2241          #include <GL/glx.h>
  2242         ],[
  2243         ],[
  2244         video_opengl=yes
  2245         ])
  2246         AC_MSG_RESULT($video_opengl)
  2247         if test x$video_opengl = xyes; then
  2248             AC_DEFINE(SDL_VIDEO_OPENGL, 1, [ ])
  2249             AC_DEFINE(SDL_VIDEO_OPENGL_GLX, 1, [ ])
  2250             AC_DEFINE(SDL_VIDEO_RENDER_OGL, 1, [ ])
  2251             SUMMARY_video="${SUMMARY_video} opengl"
  2252         fi
  2253     fi
  2254 }
  2255 
  2256 dnl Check to see if OpenGL ES support is desired
  2257 AC_ARG_ENABLE(video-opengles,
  2258 AS_HELP_STRING([--enable-video-opengles], [include OpenGL ES support [[default=yes]]]),
  2259               , enable_video_opengles=yes)
  2260 AC_ARG_ENABLE(video-opengles1,
  2261 AS_HELP_STRING([--enable-video-opengles1], [include OpenGL ES 1.1 support [[default=yes]]]),
  2262               , enable_video_opengles1=yes)
  2263 AC_ARG_ENABLE(video-opengles2,
  2264 AS_HELP_STRING([--enable-video-opengles2], [include OpenGL ES 2.0 support [[default=yes]]]),
  2265               , enable_video_opengles2=yes)
  2266 
  2267 dnl Find OpenGL ES
  2268 CheckOpenGLESX11()
  2269 {
  2270     if test x$enable_video = xyes -a x$enable_video_opengles = xyes; then
  2271         AC_MSG_CHECKING(for EGL support)
  2272         video_opengl_egl=no
  2273         AC_TRY_COMPILE([
  2274           #define LINUX
  2275           #define EGL_API_FB
  2276           #define MESA_EGL_NO_X11_HEADERS
  2277           #include <EGL/egl.h>
  2278           #include <EGL/eglext.h>
  2279         ],[
  2280         ],[
  2281         video_opengl_egl=yes
  2282         ])
  2283         AC_MSG_RESULT($video_opengl_egl)
  2284         if test x$video_opengl_egl = xyes; then
  2285             AC_DEFINE(SDL_VIDEO_OPENGL_EGL, 1, [ ])
  2286         fi
  2287             
  2288         if test x$enable_video_opengles1 = xyes; then
  2289             AC_MSG_CHECKING(for OpenGL ES v1 headers)
  2290             video_opengles_v1=no
  2291             AC_TRY_COMPILE([
  2292              #include <GLES/gl.h>
  2293              #include <GLES/glext.h>
  2294             ],[
  2295             ],[
  2296             video_opengles_v1=yes
  2297             ])
  2298             AC_MSG_RESULT($video_opengles_v1)
  2299             if test x$video_opengles_v1 = xyes; then
  2300                 AC_DEFINE(SDL_VIDEO_OPENGL_ES, 1, [ ])
  2301                 AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES, 1, [ ])
  2302                 SUMMARY_video="${SUMMARY_video} opengl_es1"
  2303             fi
  2304         fi
  2305         
  2306         if test x$enable_video_opengles2 = xyes; then
  2307             AC_MSG_CHECKING(for OpenGL ES v2 headers)
  2308             video_opengles_v2=no
  2309             AC_TRY_COMPILE([
  2310              #include <GLES2/gl2.h>
  2311              #include <GLES2/gl2ext.h>
  2312             ],[
  2313             ],[
  2314             video_opengles_v2=yes
  2315             ])
  2316             AC_MSG_RESULT($video_opengles_v2)
  2317             if test x$video_opengles_v2 = xyes; then
  2318                 AC_DEFINE(SDL_VIDEO_OPENGL_ES2, 1, [ ])
  2319                 AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES2, 1, [ ])
  2320                 SUMMARY_video="${SUMMARY_video} opengl_es2"
  2321             fi
  2322         fi
  2323     fi
  2324 }
  2325 
  2326 dnl Check for Windows OpenGL
  2327 CheckWINDOWSGL()
  2328 {
  2329     if test x$enable_video = xyes -a x$enable_video_opengl = xyes; then
  2330         AC_DEFINE(SDL_VIDEO_OPENGL, 1, [ ])
  2331         AC_DEFINE(SDL_VIDEO_OPENGL_WGL, 1, [ ])
  2332         AC_DEFINE(SDL_VIDEO_RENDER_OGL, 1, [ ])
  2333         SUMMARY_video="${SUMMARY_video} opengl"
  2334     fi
  2335 }
  2336 
  2337 dnl Check for Windows OpenGL
  2338 CheckWINDOWSGLES()
  2339 {
  2340     if test x$enable_video = xyes -a x$enable_video_opengles = xyes; then
  2341 
  2342         AC_MSG_CHECKING(for EGL support)
  2343         video_opengl_egl=no
  2344         AC_TRY_COMPILE([
  2345          #include <EGL/egl.h>
  2346         ],[
  2347         ],[
  2348         video_opengl_egl=yes
  2349         ])
  2350         AC_MSG_RESULT($video_opengl_egl)
  2351         if test x$video_opengl_egl = xyes; then
  2352             AC_DEFINE(SDL_VIDEO_OPENGL, 1, [ ])
  2353             AC_DEFINE(SDL_VIDEO_OPENGL_EGL, 1, [ ])
  2354             SUMMARY_video="${SUMMARY_video} opengl_es1"
  2355         fi
  2356        
  2357         AC_MSG_CHECKING(for OpenGL ES v2 headers)
  2358         video_opengles_v2=no
  2359         AC_TRY_COMPILE([
  2360          #include <GLES2/gl2.h>
  2361          #include <GLES2/gl2ext.h>
  2362         ],[
  2363         ],[
  2364         video_opengles_v2=yes
  2365         ])
  2366         AC_MSG_RESULT($video_opengles_v2)
  2367         if test x$video_opengles_v2 = xyes; then
  2368             AC_DEFINE(SDL_VIDEO_OPENGL, 1, [ ])
  2369             AC_DEFINE(SDL_VIDEO_OPENGL_ES2, 1, [ ])
  2370             AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES2, 1, [ ])
  2371             SUMMARY_video="${SUMMARY_video} opengl_es2"
  2372         fi
  2373     fi
  2374 }
  2375 
  2376 dnl Check for Haiku OpenGL
  2377 CheckHaikuGL()
  2378 {
  2379     if test x$enable_video = xyes -a x$enable_video_opengl = xyes; then
  2380         AC_DEFINE(SDL_VIDEO_OPENGL, 1, [ ])
  2381         AC_DEFINE(SDL_VIDEO_OPENGL_HAIKU, 1, [ ])
  2382         AC_DEFINE(SDL_VIDEO_RENDER_OGL, 1, [ ])
  2383         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lGL"
  2384         SUMMARY_video="${SUMMARY_video} opengl"
  2385     fi
  2386 }
  2387 
  2388 dnl Check for MacOS OpenGL
  2389 CheckMacGL()
  2390 {
  2391     if test x$enable_video = xyes -a x$enable_video_opengl = xyes; then
  2392         AC_DEFINE(SDL_VIDEO_OPENGL, 1, [ ])
  2393         AC_DEFINE(SDL_VIDEO_OPENGL_CGL, 1, [ ])
  2394         AC_DEFINE(SDL_VIDEO_RENDER_OGL, 1, [ ])
  2395         SUMMARY_video="${SUMMARY_video} opengl"
  2396     fi
  2397 }
  2398 
  2399 dnl Check for MacOS OpenGLES
  2400 CheckMacGLES()
  2401 {
  2402     if test x$enable_video = xyes -a x$enable_video_opengles = xyes; then
  2403         video_opengl_egl=yes
  2404         AC_DEFINE(SDL_VIDEO_OPENGL_EGL, 1, [ ])
  2405         video_opengles_v2=yes
  2406         AC_DEFINE(SDL_VIDEO_OPENGL_ES2, 1, [ ])
  2407         AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES2, 1, [ ])
  2408         SUMMARY_video="${SUMMARY_video} opengl_es2"
  2409     fi
  2410 }
  2411 
  2412 CheckEmscriptenGLES()
  2413 {
  2414     if test x$enable_video = xyes -a x$enable_video_opengles = xyes; then
  2415         AC_MSG_CHECKING(for EGL support)
  2416         video_opengl_egl=no
  2417         AC_TRY_COMPILE([
  2418          #include <EGL/egl.h>
  2419         ],[
  2420         ],[
  2421         video_opengl_egl=yes
  2422         ])
  2423         AC_MSG_RESULT($video_opengl_egl)
  2424         if test x$video_opengl_egl = xyes; then
  2425             AC_DEFINE(SDL_VIDEO_OPENGL_EGL, 1, [ ])
  2426         fi
  2427 
  2428         AC_MSG_CHECKING(for OpenGL ES v2 headers)
  2429         video_opengles_v2=no
  2430         AC_TRY_COMPILE([
  2431          #include <GLES2/gl2.h>
  2432          #include <GLES2/gl2ext.h>
  2433         ],[
  2434         ],[
  2435         video_opengles_v2=yes
  2436         ])
  2437         AC_MSG_RESULT($video_opengles_v2)
  2438         if test x$video_opengles_v2 = xyes; then
  2439             AC_DEFINE(SDL_VIDEO_OPENGL_ES2, 1, [ ])
  2440             AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES2, 1, [ ])
  2441             SUMMARY_video="${SUMMARY_video} opengl_es2"
  2442         fi
  2443     fi
  2444 }
  2445 
  2446 dnl Check to see if Vulkan support is desired
  2447 AC_ARG_ENABLE(video-vulkan,
  2448 AS_HELP_STRING([--enable-video-vulkan], [include Vulkan support [[default=yes]]]),
  2449               , enable_video_vulkan=yes)
  2450 
  2451 dnl Find Vulkan Header
  2452 CheckVulkan()
  2453 {
  2454     if test x$enable_video = xyes -a x$enable_video_vulkan = xyes; then
  2455         case "$host" in
  2456             *-*-android*)
  2457                 AC_TRY_COMPILE([
  2458                   #if defined(__ARM_ARCH) && __ARM_ARCH < 7
  2459                   #error Vulkan doesn't work on this configuration
  2460                   #endif
  2461                 ],[
  2462                 ],[
  2463                 ],[
  2464                     enable_video_vulkan=no
  2465                 ])
  2466                 ;;
  2467             *-*-darwin*)
  2468                 save_CFLAGS="$CFLAGS"
  2469                 dnl Work around that we don't have Objective-C support in autoconf
  2470                 CFLAGS="$CFLAGS -x objective-c"
  2471                 AC_TRY_COMPILE([
  2472                   #include <Cocoa/Cocoa.h>
  2473                   #include <Metal/Metal.h>
  2474                   #include <QuartzCore/CAMetalLayer.h>
  2475 
  2476                   #if !TARGET_CPU_X86_64
  2477                   #error Vulkan doesn't work on this configuration
  2478                   #endif
  2479                 ],[
  2480                 ],[
  2481                 ],[
  2482                     enable_video_vulkan=no
  2483                 ])
  2484                 CFLAGS="$save_CFLAGS"
  2485                 ;;
  2486             *)
  2487                 ;;
  2488         esac
  2489         if test x$enable_video_vulkan = xno; then
  2490             # For reasons I am totally unable to see, I get an undefined macro error if
  2491             # I put this in the AC_TRY_COMPILE.
  2492             AC_MSG_WARN([Vulkan does not work on this configuration.])
  2493         fi
  2494     fi
  2495     if test x$enable_video_vulkan = xyes; then
  2496         AC_DEFINE(SDL_VIDEO_VULKAN, 1, [ ])
  2497         SUMMARY_video="${SUMMARY_video} vulkan"
  2498     fi
  2499 }
  2500 
  2501 dnl See if we can use the new unified event interface in Linux 2.4
  2502 CheckInputEvents()
  2503 {
  2504     dnl Check for Linux 2.4 unified input event interface support
  2505         AC_MSG_CHECKING(for Linux 2.4 unified input interface)
  2506         use_input_events=no
  2507         AC_TRY_COMPILE([
  2508           #include <linux/input.h>
  2509         ],[
  2510           #ifndef EVIOCGNAME
  2511           #error EVIOCGNAME() ioctl not available
  2512           #endif
  2513         ],[
  2514         use_input_events=yes
  2515         ])
  2516         AC_MSG_RESULT($use_input_events)
  2517         if test x$use_input_events = xyes; then
  2518             AC_DEFINE(SDL_INPUT_LINUXEV, 1, [ ])
  2519             SUMMARY_input="${SUMMARY_input} linuxev"
  2520         fi
  2521 }
  2522 
  2523 dnl See if we can use the kernel kd.h header
  2524 CheckInputKD()
  2525 {
  2526 
  2527     AC_MSG_CHECKING(for Linux kd.h)
  2528     use_input_kd=no
  2529     AC_TRY_COMPILE([
  2530       #include <linux/kd.h>
  2531       #include <linux/keyboard.h>
  2532     ],[
  2533         struct kbentry kbe;
  2534         kbe.kb_table = KG_CTRL;
  2535         ioctl(0, KDGKBENT, &kbe);
  2536     ],[
  2537     use_input_kd=yes
  2538     ])
  2539     AC_MSG_RESULT($use_input_kd)
  2540     if test x$use_input_kd = xyes; then
  2541         AC_DEFINE(SDL_INPUT_LINUXKD, 1, [ ])
  2542         SUMMARY_input="${SUMMARY_input} linuxkd"
  2543     fi
  2544 }
  2545 
  2546 dnl See if the platform offers libudev for device enumeration and hotplugging.
  2547 CheckLibUDev()
  2548 {
  2549     AC_ARG_ENABLE(libudev,
  2550 AS_HELP_STRING([--enable-libudev], [enable libudev support [[default=yes]]]),
  2551                         , enable_libudev=yes)
  2552     if test x$enable_libudev = xyes; then
  2553         AC_CHECK_HEADER(libudev.h,
  2554                         have_libudev_h_hdr=yes,
  2555                         have_libudev_h_hdr=no)
  2556         if test x$have_libudev_h_hdr = xyes; then
  2557             AC_DEFINE(HAVE_LIBUDEV_H, 1, [ ])
  2558 
  2559             udev_lib=[`find_lib "libudev.so.*" "" | sed 's/.*\/\(.*\)/\1/; q'`]
  2560             if test x$udev_lib != x; then
  2561                 echo "-- dynamic udev -> $udev_lib"
  2562                 AC_DEFINE_UNQUOTED(SDL_UDEV_DYNAMIC, "$udev_lib", [ ])
  2563             fi
  2564         fi
  2565     fi
  2566 }
  2567 
  2568 dnl See if the platform offers libdbus for various IPC techniques.
  2569 CheckDBus()
  2570 {
  2571     AC_ARG_ENABLE(dbus,
  2572 AS_HELP_STRING([--enable-dbus], [enable D-Bus support [[default=yes]]]),
  2573                         , enable_dbus=yes)
  2574     if test x$enable_dbus = xyes; then
  2575         PKG_CHECK_MODULES([DBUS], [dbus-1], have_dbus=yes, have_dbus=no)
  2576         save_CFLAGS="$CFLAGS"
  2577         CFLAGS="$save_CFLAGS $DBUS_CFLAGS"
  2578         AC_CHECK_HEADER(dbus/dbus.h,
  2579                         have_dbus_dbus_h_hdr=yes,
  2580                         have_dbus_dbus_h_hdr=no)
  2581         CFLAGS="$save_CFLAGS"
  2582         if test x$have_dbus_dbus_h_hdr = xyes; then
  2583             AC_DEFINE(HAVE_DBUS_DBUS_H, 1, [ ])
  2584             EXTRA_CFLAGS="$EXTRA_CFLAGS $DBUS_CFLAGS"
  2585             SOURCES="$SOURCES $srcdir/src/core/linux/SDL_dbus.c"
  2586         fi
  2587     fi
  2588 }
  2589 
  2590 dnl See if the platform wanna IME support.
  2591 CheckIME()
  2592 {
  2593     AC_ARG_ENABLE(ime,
  2594 AS_HELP_STRING([--enable-ime], [enable IME support [[default=yes]]]),
  2595                   , enable_ime=yes)
  2596     if test x$enable_ime = xyes; then
  2597         AC_DEFINE(SDL_USE_IME, 1, [ ])
  2598             SOURCES="$SOURCES $srcdir/src/core/linux/SDL_ime.c"
  2599     fi
  2600 }
  2601 
  2602 dnl See if the platform has libibus IME support.
  2603 CheckIBus()
  2604 {
  2605     AC_ARG_ENABLE(ibus,
  2606 AS_HELP_STRING([--enable-ibus], [enable IBus support [[default=yes]]]),
  2607                   , enable_ibus=yes)
  2608     if test x$enable_ibus = xyes; then
  2609         PKG_CHECK_MODULES([IBUS], [ibus-1.0], have_ibus=yes, have_ibus=no)
  2610         save_CFLAGS="$CFLAGS"
  2611         CFLAGS="$save_CFLAGS $IBUS_CFLAGS"
  2612         AC_CHECK_HEADER(ibus-1.0/ibus.h,
  2613                         have_ibus_ibus_h_hdr=yes,
  2614                         have_ibus_ibus_h_hdr=no)
  2615         AC_CHECK_HEADER(sys/inotify.h,
  2616                         have_inotify_inotify_h_hdr=yes,
  2617                         have_inotify_inotify_h_hdr=no)
  2618         CFLAGS="$save_CFLAGS"
  2619         if test x$have_ibus_ibus_h_hdr = xyes; then
  2620             if test x$enable_ime != xyes; then
  2621                 AC_MSG_WARN([IME support is required for IBus.])
  2622                 have_ibus_ibus_h_hdr=no
  2623             elif test x$enable_dbus != xyes; then
  2624                 AC_MSG_WARN([DBus support is required for IBus.])
  2625                 have_ibus_ibus_h_hdr=no
  2626             elif test x$have_inotify_inotify_h_hdr != xyes; then
  2627                 AC_MSG_WARN([INotify support is required for IBus.])
  2628                 have_ibus_ibus_h_hdr=no
  2629             else
  2630                 AC_DEFINE(HAVE_IBUS_IBUS_H, 1, [ ])
  2631                 EXTRA_CFLAGS="$EXTRA_CFLAGS $IBUS_CFLAGS"
  2632                 SOURCES="$SOURCES $srcdir/src/core/linux/SDL_ibus.c"
  2633             fi
  2634         fi
  2635     fi
  2636 }
  2637 
  2638 dnl See if the platform has fcitx IME support.
  2639 CheckFcitx()
  2640 {
  2641     AC_ARG_ENABLE(fcitx,
  2642 AS_HELP_STRING([--enable-fcitx], [enable fcitx support [[default=yes]]]),
  2643                   , enable_fcitx=yes)
  2644     if test x$enable_fcitx = xyes; then
  2645         PKG_CHECK_MODULES([FCITX], [fcitx], have_fcitx=yes, have_fcitx=no)
  2646         CFLAGS="$CFLAGS $FCITX_CFLAGS"
  2647         AC_CHECK_HEADER(fcitx/frontend.h,
  2648                         have_fcitx_frontend_h_hdr=yes,
  2649                         have_fcitx_frontend_h_hdr=no)
  2650         CFLAGS="$save_CFLAGS"
  2651         if test x$have_fcitx_frontend_h_hdr = xyes; then
  2652             if test x$enable_ime != xyes; then
  2653                 AC_MSG_WARN([IME support is required for fcitx.])
  2654                 have_fcitx_frontend_h_hdr=no
  2655             elif test x$enable_dbus != xyes; then
  2656                 AC_MSG_WARN([DBus support is required for fcitx.])
  2657                 have_fcitx_frontend_h_hdr=no
  2658             else
  2659                 AC_DEFINE(HAVE_FCITX_FRONTEND_H, 1, [ ])
  2660                 EXTRA_CFLAGS="$EXTRA_CFLAGS $FCITX_CFLAGS"
  2661                 SOURCES="$SOURCES $srcdir/src/core/linux/SDL_fcitx.c"
  2662             fi
  2663         fi
  2664     fi
  2665 }
  2666 
  2667 dnl See if we can use the Touchscreen input library
  2668 CheckTslib()
  2669 {
  2670     AC_ARG_ENABLE(input-tslib,
  2671 AS_HELP_STRING([--enable-input-tslib], [use the Touchscreen library for input [[default=yes]]]),
  2672                   , enable_input_tslib=yes)
  2673     if test x$enable_input_tslib = xyes; then
  2674         AC_MSG_CHECKING(for Touchscreen library support)
  2675         enable_input_tslib=no
  2676         AC_TRY_COMPILE([
  2677           #include "tslib.h"
  2678         ],[
  2679         ],[
  2680         enable_input_tslib=yes
  2681         ])
  2682         AC_MSG_RESULT($enable_input_tslib)
  2683         if test x$enable_input_tslib = xyes; then
  2684             AC_DEFINE(SDL_INPUT_TSLIB, 1, [ ])
  2685             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lts"
  2686             SUMMARY_input="${SUMMARY_input} ts"
  2687         fi
  2688     fi
  2689 }
  2690 
  2691 dnl See what type of thread model to use on Linux and Solaris
  2692 CheckPTHREAD()
  2693 {
  2694     dnl Check for pthread support
  2695     AC_ARG_ENABLE(pthreads,
  2696 AS_HELP_STRING([--enable-pthreads], [use POSIX threads for multi-threading [[default=yes]]]),
  2697                   , enable_pthreads=yes)
  2698     dnl This is used on Linux for glibc binary compatibility (Doh!)
  2699     AC_ARG_ENABLE(pthread-sem,
  2700 AS_HELP_STRING([--enable-pthread-sem], [use pthread semaphores [[default=yes]]]),
  2701                   , enable_pthread_sem=yes)
  2702     case "$host" in
  2703          *-*-android*)
  2704             pthread_cflags="-D_REENTRANT -D_THREAD_SAFE"
  2705             pthread_lib=""
  2706             ;;
  2707         *-*-linux*|*-*-uclinux*)
  2708             pthread_cflags="-D_REENTRANT"
  2709             pthread_lib="-lpthread"
  2710             ;;
  2711         *-*-bsdi*)
  2712             pthread_cflags="-D_REENTRANT -D_THREAD_SAFE"
  2713             pthread_lib=""
  2714             ;;
  2715         *-*-darwin*)
  2716             pthread_cflags="-D_THREAD_SAFE"
  2717 # causes Carbon.p complaints?
  2718 #            pthread_cflags="-D_REENTRANT -D_THREAD_SAFE"
  2719             ;;
  2720         *-*-freebsd*|*-*-dragonfly*)
  2721             pthread_cflags="-D_REENTRANT -D_THREAD_SAFE"
  2722             pthread_lib="-pthread"
  2723             ;;
  2724         *-*-netbsd*)
  2725             pthread_cflags="-D_REENTRANT -D_THREAD_SAFE"
  2726             pthread_lib="-lpthread"
  2727             ;;
  2728         *-*-openbsd*)
  2729             pthread_cflags="-D_REENTRANT"
  2730             pthread_lib="-pthread"
  2731             ;;
  2732         *-*-solaris2.9)
  2733             # From Solaris 9+, posix4's preferred name is rt.
  2734             pthread_cflags="-D_REENTRANT"
  2735             pthread_lib="-lpthread -lrt"
  2736             ;;
  2737         *-*-solaris2.10)
  2738             # Solaris 10+ merged pthread into libc.
  2739             pthread_cflags="-D_REENTRANT"
  2740             pthread_lib="-lrt"
  2741             ;;
  2742         *-*-solaris*)
  2743             # Solaris 11+ merged rt into libc.
  2744             pthread_cflags="-D_REENTRANT"
  2745             pthread_lib=""
  2746             ;;
  2747         *-*-sysv5*)
  2748             pthread_cflags="-D_REENTRANT -Kthread"
  2749             pthread_lib=""
  2750             ;;
  2751         *-*-aix*)
  2752             pthread_cflags="-D_REENTRANT -mthreads"
  2753             pthread_lib="-lpthread"
  2754             ;;
  2755         *-*-hpux11*)
  2756             pthread_cflags="-D_REENTRANT"
  2757             pthread_lib="-L/usr/lib -lpthread"
  2758             ;;
  2759         *-*-haiku*)
  2760             pthread_cflags="-D_REENTRANT"
  2761             pthread_lib=""
  2762             ;;
  2763         *-*-nto*)
  2764             pthread_cflags="-D_REENTRANT"
  2765             pthread_lib=""
  2766             ;;
  2767         *)
  2768             pthread_cflags="-D_REENTRANT"
  2769             pthread_lib="-lpthread"
  2770             ;;
  2771     esac
  2772     if test x$enable_threads = xyes -a x$enable_pthreads = xyes; then
  2773         # Save the original compiler flags and libraries
  2774         ac_save_cflags="$CFLAGS"; ac_save_libs="$LIBS"
  2775         # Add the pthread compiler flags and libraries
  2776         CFLAGS="$CFLAGS $pthread_cflags"; LIBS="$LIBS $pthread_lib"
  2777         # Check to see if we have pthread support on this system
  2778         AC_MSG_CHECKING(for pthreads)
  2779         use_pthreads=no
  2780         AC_TRY_LINK([
  2781          #include <pthread.h>
  2782         ],[
  2783          pthread_attr_t type;
  2784          pthread_attr_init(&type);
  2785         ],[
  2786         use_pthreads=yes
  2787         ])
  2788         AC_MSG_RESULT($use_pthreads)
  2789         # Restore the compiler flags and libraries
  2790         CFLAGS="$ac_save_cflags"; LIBS="$ac_save_libs"
  2791 
  2792         # Do futher testing if we have pthread support...
  2793         if test x$use_pthreads = xyes; then
  2794             AC_DEFINE(SDL_THREAD_PTHREAD, 1, [ ])
  2795             EXTRA_CFLAGS="$EXTRA_CFLAGS $pthread_cflags"
  2796             EXTRA_LDFLAGS="$EXTRA_LDFLAGS $pthread_lib"
  2797             SDL_CFLAGS="$SDL_CFLAGS $pthread_cflags"
  2798 
  2799             # Save the original compiler flags and libraries
  2800             ac_save_cflags="$CFLAGS"; ac_save_libs="$LIBS"
  2801             # Add the pthread compiler flags and libraries
  2802             CFLAGS="$CFLAGS $pthread_cflags"; LIBS="$LIBS $pthread_lib"
  2803 
  2804             # Check to see if recursive mutexes are available
  2805             AC_MSG_CHECKING(for recursive mutexes)
  2806             has_recursive_mutexes=no
  2807             if test x$has_recursive_mutexes = xno; then
  2808                 AC_TRY_LINK([
  2809                   #define _GNU_SOURCE 1
  2810                   #include <pthread.h>
  2811                 ],[
  2812                   pthread_mutexattr_t attr;
  2813                   pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
  2814                 ],[
  2815                 has_recursive_mutexes=yes
  2816                 AC_DEFINE(SDL_THREAD_PTHREAD_RECURSIVE_MUTEX, 1, [ ])
  2817                 ])
  2818             fi
  2819             if test x$has_recursive_mutexes = xno; then
  2820                 AC_TRY_LINK([
  2821                   #define _GNU_SOURCE 1
  2822                   #include <pthread.h>
  2823                 ],[
  2824                   pthread_mutexattr_t attr;
  2825                   pthread_mutexattr_setkind_np(&attr, PTHREAD_MUTEX_RECURSIVE_NP);
  2826                 ],[
  2827                 has_recursive_mutexes=yes
  2828                 AC_DEFINE(SDL_THREAD_PTHREAD_RECURSIVE_MUTEX_NP, 1, [ ])
  2829                 ])
  2830             fi
  2831             AC_MSG_RESULT($has_recursive_mutexes)
  2832 
  2833             # Check to see if pthread semaphore support is missing
  2834             if test x$enable_pthread_sem = xyes; then
  2835                 AC_MSG_CHECKING(for pthread semaphores)
  2836                 have_pthread_sem=no
  2837                 AC_TRY_COMPILE([
  2838                   #include <pthread.h>
  2839                   #include <semaphore.h>
  2840                 ],[
  2841                 ],[
  2842                 have_pthread_sem=yes
  2843                 ])
  2844                 AC_MSG_RESULT($have_pthread_sem)
  2845             fi
  2846             if test x$have_pthread_sem = xyes; then
  2847                 AC_MSG_CHECKING(for sem_timedwait)
  2848                 have_sem_timedwait=no
  2849                 AC_TRY_LINK([
  2850                   #include <pthread.h>
  2851                   #include <semaphore.h>
  2852                 ],[
  2853                   sem_timedwait(NULL, NULL);
  2854                 ],[
  2855                 have_sem_timedwait=yes
  2856                 AC_DEFINE([HAVE_SEM_TIMEDWAIT], 1, [ ])
  2857                 ])
  2858                 AC_MSG_RESULT($have_sem_timedwait)
  2859             fi
  2860 
  2861             AC_CHECK_HEADER(pthread_np.h, have_pthread_np_h=yes, have_pthread_np_h=no, [ #include <pthread.h> ])
  2862             if test x$have_pthread_np_h = xyes; then
  2863                 AC_DEFINE(HAVE_PTHREAD_NP_H, 1, [ ])
  2864             fi
  2865 
  2866             # Check to see if pthread naming is available
  2867             AC_MSG_CHECKING(for pthread_setname_np)
  2868             AC_TRY_LINK_FUNC(pthread_setname_np, [
  2869               has_pthread_setname_np=yes
  2870               AC_DEFINE(HAVE_PTHREAD_SETNAME_NP, 1, [ ])
  2871             ],[
  2872               has_pthread_setname_np=no
  2873             ])
  2874             AC_MSG_RESULT($has_pthread_setname_np)
  2875 
  2876             AC_MSG_CHECKING(for pthread_set_name_np)
  2877             AC_TRY_LINK_FUNC(pthread_set_name_np, [
  2878               has_pthread_set_name_np=yes
  2879               AC_DEFINE(HAVE_PTHREAD_SET_NAME_NP, 1, [ ])
  2880             ],[
  2881               has_pthread_set_name_np=no
  2882             ])
  2883             AC_MSG_RESULT($has_pthread_set_name_np)
  2884 
  2885             # Restore the compiler flags and libraries
  2886             CFLAGS="$ac_save_cflags"; LIBS="$ac_save_libs"
  2887 
  2888             # Basic thread creation functions
  2889             SOURCES="$SOURCES $srcdir/src/thread/pthread/SDL_systhread.c"
  2890 
  2891             # Semaphores
  2892             # We can fake these with mutexes and condition variables if necessary
  2893             if test x$have_pthread_sem = xyes; then
  2894                 SOURCES="$SOURCES $srcdir/src/thread/pthread/SDL_syssem.c"
  2895             else
  2896                 SOURCES="$SOURCES $srcdir/src/thread/generic/SDL_syssem.c"
  2897             fi
  2898 
  2899             # Mutexes
  2900             # We can fake these with semaphores if necessary
  2901             SOURCES="$SOURCES $srcdir/src/thread/pthread/SDL_sysmutex.c"
  2902 
  2903             # Condition variables
  2904             # We can fake these with semaphores and mutexes if necessary
  2905             SOURCES="$SOURCES $srcdir/src/thread/pthread/SDL_syscond.c"
  2906 
  2907             # Thread local storage
  2908             SOURCES="$SOURCES $srcdir/src/thread/pthread/SDL_systls.c"
  2909 
  2910             have_threads=yes
  2911         fi
  2912     fi
  2913 }
  2914 
  2915 dnl Determine whether the compiler can produce Windows executables
  2916 CheckWINDOWS()
  2917 {
  2918     AC_MSG_CHECKING(Windows compiler)
  2919     have_win32_gcc=no
  2920     AC_TRY_COMPILE([
  2921      #include <windows.h>
  2922     ],[
  2923     ],[
  2924     have_win32_gcc=yes
  2925     ])
  2926     AC_MSG_RESULT($have_win32_gcc)
  2927     if test x$have_win32_gcc != xyes; then
  2928        AC_MSG_ERROR([
  2929 *** Your compiler ($CC) does not produce Windows executables!
  2930        ])
  2931     fi
  2932 
  2933     AC_MSG_CHECKING(Windows CE)
  2934     have_wince=no
  2935     AC_TRY_COMPILE([
  2936 #if !defined(_WIN32_WCE) && !defined(__MINGW32CE__)
  2937 #error This is not Windows CE
  2938 #endif
  2939     ],[
  2940     ],[
  2941     have_wince=yes
  2942        AC_MSG_ERROR([
  2943 *** Sorry, Windows CE is no longer supported.
  2944        ])
  2945     ])
  2946     AC_MSG_RESULT($have_wince)
  2947 
  2948     # This fixes Windows stack alignment with newer GCC
  2949     CheckStackBoundary
  2950 }
  2951 
  2952 dnl Find the DirectX includes and libraries
  2953 CheckDIRECTX()
  2954 {
  2955     AC_ARG_ENABLE(directx,
  2956 AS_HELP_STRING([--enable-directx], [use DirectX for Windows audio/video [[default=yes]]]),
  2957                   , enable_directx=yes)
  2958     if test x$enable_directx = xyes; then
  2959         AC_CHECK_HEADER(d3d9.h, have_d3d=yes)
  2960         AC_CHECK_HEADER(d3d11_1.h, have_d3d11=yes)
  2961         AC_CHECK_HEADER(ddraw.h, have_ddraw=yes)
  2962         AC_CHECK_HEADER(dsound.h, have_dsound=yes)
  2963         AC_CHECK_HEADER(dinput.h, have_dinput=yes)
  2964         AC_CHECK_HEADER(dxgi.h, have_dxgi=yes)
  2965         AC_CHECK_HEADER(xinput.h, have_xinput=yes)
  2966         AC_TRY_COMPILE([
  2967 #include <windows.h>
  2968 #include <xinput.h>
  2969 XINPUT_GAMEPAD_EX x1;
  2970         ],[],[have_xinput_gamepadex=yes])
  2971         AC_TRY_COMPILE([
  2972 #include <windows.h>
  2973 #include <xinput.h>
  2974 XINPUT_STATE_EX s1;
  2975         ],[],[have_xinput_stateex=yes])
  2976 
  2977         if test x$have_ddraw = xyes; then
  2978             AC_DEFINE(HAVE_DDRAW_H, 1, [ ])
  2979         fi
  2980         if test x$have_dinput = xyes; then
  2981             AC_DEFINE(HAVE_DINPUT_H, 1, [ ])
  2982         fi
  2983         if test x$have_dsound = xyes; then
  2984             AC_DEFINE(HAVE_DSOUND_H, 1, [ ])
  2985         fi
  2986         if test x$have_dxgi = xyes; then
  2987             AC_DEFINE(HAVE_DXGI_H, 1, [ ])
  2988         fi
  2989         if test x$have_xinput = xyes; then
  2990             AC_DEFINE(HAVE_XINPUT_H, 1, [ ])
  2991         fi
  2992         if test x$have_xinput_gamepadex = xyes; then
  2993             AC_DEFINE(HAVE_XINPUT_GAMEPAD_EX, 1, [ ])
  2994         fi
  2995         if test x$have_xinput_stateex = xyes; then
  2996             AC_DEFINE(HAVE_XINPUT_STATE_EX, 1, [ ])
  2997         fi
  2998 
  2999         # FIXME: latest Cygwin finds dinput headers, but we die on other win32 headers.
  3000         # FIXME:  ...so force it off for now.
  3001         case "$host" in
  3002             *-*-cygwin*)
  3003             have_dinput=false
  3004             ;;
  3005         esac
  3006     fi
  3007 
  3008     AC_CHECK_HEADER(mmdeviceapi.h, have_wasapi=yes)
  3009     if test x$have_wasapi = xyes; then
  3010         AC_DEFINE(HAVE_MMDEVICEAPI_H,1,[])
  3011     fi
  3012     AC_CHECK_HEADER(audioclient.h,,have_wasapi=no)
  3013     if test x$have_wasapi = xyes; then
  3014         AC_DEFINE(HAVE_AUDIOCLIENT_H,1,[])
  3015     fi
  3016 
  3017     AC_CHECK_HEADER(endpointvolume.h,AC_DEFINE(HAVE_ENDPOINTVOLUME_H,1,[]))
  3018 
  3019     AC_ARG_ENABLE(wasapi,
  3020 AS_HELP_STRING([--enable-wasapi], [use the Windows WASAPI audio driver [[default=yes]]]),
  3021                                 , enable_wasapi=yes)
  3022 }
  3023 
  3024 dnl Check for the dlfcn.h interface for dynamically loading objects
  3025 CheckDLOPEN()
  3026 {
  3027     AC_ARG_ENABLE(sdl-dlopen,
  3028 AS_HELP_STRING([--enable-sdl-dlopen], [use dlopen for shared object loading [[default=yes]]]),
  3029                   , enable_sdl_dlopen=yes)
  3030     if test x$enable_sdl_dlopen = xyes; then
  3031         AC_MSG_CHECKING(for dlopen)
  3032         have_dlopen=no
  3033         AC_TRY_COMPILE([
  3034          #include <dlfcn.h>
  3035         ],[
  3036          void *handle = dlopen("", RTLD_NOW);
  3037          const char *loaderror = (char *) dlerror();
  3038         ],[
  3039         have_dlopen=yes
  3040         ])
  3041         AC_MSG_RESULT($have_dlopen)
  3042 
  3043         if test x$have_dlopen = xyes; then
  3044             AC_CHECK_LIB(c, dlopen, EXTRA_LDFLAGS="$EXTRA_LDFLAGS",
  3045                AC_CHECK_LIB(dl, dlopen, EXTRA_LDFLAGS="$EXTRA_LDFLAGS -ldl",
  3046                   AC_CHECK_LIB(ltdl, dlopen, EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lltdl")))
  3047             AC_DEFINE(SDL_LOADSO_DLOPEN, 1, [ ])
  3048             SOURCES="$SOURCES $srcdir/src/loadso/dlopen/*.c"
  3049             have_loadso=yes
  3050         fi
  3051     fi
  3052 }
  3053 
  3054 dnl Check for the usbhid(3) library on *BSD
  3055 CheckUSBHID()
  3056 {
  3057     case "$host" in
  3058         *-*-*bsd*)
  3059             if test x$enable_joystick = xyes; then
  3060                 AC_CHECK_LIB(usbhid, hid_init, have_libusbhid=yes)
  3061                 if test x$have_libusbhid = xyes; then
  3062                     AC_CHECK_HEADER(usbhid.h, [USB_CFLAGS="-DHAVE_USBHID_H"])
  3063                     AC_CHECK_HEADER(libusbhid.h, [USB_CFLAGS="-DHAVE_LIBUSBHID_H"])
  3064                     USB_LIBS="$USB_LIBS -lusbhid"
  3065                 else
  3066                     AC_CHECK_HEADER(usb.h, [USB_CFLAGS="-DHAVE_USB_H"])
  3067                     AC_CHECK_HEADER(libusb.h, [USB_CFLAGS="-DHAVE_LIBUSB_H"])
  3068                     AC_CHECK_LIB(usb, hid_init, [USB_LIBS="$USB_LIBS -lusb"])
  3069                 fi
  3070                     
  3071                 save_CFLAGS="$CFLAGS"
  3072                 CFLAGS="$CFLAGS $USB_CFLAGS"
  3073 
  3074                 AC_MSG_CHECKING(for usbhid)
  3075                 have_usbhid=no
  3076                 AC_TRY_COMPILE([
  3077                   #include <sys/types.h>
  3078                   #if defined(HAVE_USB_H)
  3079                   #include <usb.h>
  3080                   #endif
  3081                   #ifdef __DragonFly__
  3082                   # include <bus/usb/usb.h>
  3083                   # include <bus/usb/usbhid.h>
  3084                   #else
  3085                   # include <dev/usb/usb.h>
  3086                   # include <dev/usb/usbhid.h>
  3087                   #endif
  3088                   #if defined(HAVE_USBHID_H)
  3089                   #include <usbhid.h>
  3090                   #elif defined(HAVE_LIBUSB_H)
  3091                   #include <libusb.h>
  3092                   #elif defined(HAVE_LIBUSBHID_H)
  3093                   #include <libusbhid.h>
  3094                   #endif
  3095                 ],[
  3096                   struct report_desc *repdesc;
  3097                   struct usb_ctl_report *repbuf;
  3098                   hid_kind_t hidkind;
  3099                 ],[
  3100                 have_usbhid=yes
  3101                 ])
  3102                 AC_MSG_RESULT($have_usbhid)
  3103 
  3104                 if test x$have_usbhid = xyes; then
  3105                     AC_MSG_CHECKING(for ucr_data member of usb_ctl_report)
  3106                     have_usbhid_ucr_data=no
  3107                     AC_TRY_COMPILE([
  3108                       #include <sys/types.h>
  3109                       #if defined(HAVE_USB_H)
  3110                       #include <usb.h>
  3111                       #endif
  3112                       #ifdef __DragonFly__
  3113                       # include <bus/usb/usb.h>
  3114                       # include <bus/usb/usbhid.h>
  3115                       #else
  3116                       # include <dev/usb/usb.h>
  3117                       # include <dev/usb/usbhid.h>
  3118                       #endif
  3119                       #if defined(HAVE_USBHID_H)
  3120                       #include <usbhid.h>
  3121                       #elif defined(HAVE_LIBUSB_H)
  3122                       #include <libusb.h>
  3123                       #elif defined(HAVE_LIBUSBHID_H)
  3124                       #include <libusbhid.h>
  3125                       #endif
  3126                     ],[
  3127                       struct usb_ctl_report buf;
  3128                       if (buf.ucr_data) { }
  3129                     ],[
  3130                     have_usbhid_ucr_data=yes
  3131                     ])
  3132                     if test x$have_usbhid_ucr_data = xyes; then
  3133                         USB_CFLAGS="$USB_CFLAGS -DUSBHID_UCR_DATA"
  3134                     fi
  3135                     AC_MSG_RESULT($have_usbhid_ucr_data)
  3136                     
  3137                     AC_MSG_CHECKING(for new usbhid API)
  3138                     have_usbhid_new=no
  3139                     AC_TRY_COMPILE([
  3140                       #include <sys/types.h>
  3141                       #if defined(HAVE_USB_H)
  3142                       #include <usb.h>
  3143                       #endif
  3144                       #ifdef __DragonFly__
  3145                       #include <bus/usb/usb.h>
  3146                       #include <bus/usb/usbhid.h>
  3147                       #else
  3148                       #include <dev/usb/usb.h>
  3149                       #include <dev/usb/usbhid.h>
  3150                       #endif
  3151                       #if defined(HAVE_USBHID_H)
  3152                       #include <usbhid.h>
  3153                       #elif defined(HAVE_LIBUSB_H)
  3154                       #include <libusb.h>
  3155                       #elif defined(HAVE_LIBUSBHID_H)
  3156                       #include <libusbhid.h>
  3157                       #endif
  3158                     ],[
  3159                       report_desc_t d;
  3160                       hid_start_parse(d, 1, 1);
  3161                     ],[
  3162                     have_usbhid_new=yes
  3163                     ])
  3164                     if test x$have_usbhid_new = xyes; then
  3165                         USB_CFLAGS="$USB_CFLAGS -DUSBHID_NEW"
  3166                     fi
  3167                     AC_MSG_RESULT($have_usbhid_new)
  3168 
  3169                     AC_MSG_CHECKING(for struct joystick in machine/joystick.h)
  3170                     have_machine_joystick=no
  3171                     AC_TRY_COMPILE([
  3172                       #include <machine/joystick.h>
  3173                     ],[
  3174                       struct joystick t;
  3175                     ],[
  3176                     have_machine_joystick=yes
  3177                     ])
  3178                     if test x$have_machine_joystick = xyes; then
  3179                         AC_DEFINE(SDL_JOYSTICK_USBHID_MACHINE_JOYSTICK_H, 1, [ ])
  3180                     fi
  3181                     AC_MSG_RESULT($have_machine_joystick)
  3182 
  3183                     AC_DEFINE(SDL_JOYSTICK_USBHID, 1, [ ])
  3184                     SOURCES="$SOURCES $srcdir/src/joystick/bsd/*.c"
  3185                     EXTRA_CFLAGS="$EXTRA_CFLAGS $USB_CFLAGS"
  3186                     EXTRA_LDFLAGS="$EXTRA_LDFLAGS $USB_LIBS"
  3187                     have_joystick=yes
  3188                 fi
  3189                 CFLAGS="$save_CFLAGS"
  3190             fi
  3191         ;;
  3192     esac
  3193 }
  3194 
  3195 dnl Check for HIDAPI joystick drivers
  3196 CheckHIDAPI()
  3197 {
  3198     # The hidraw support doesn't catch Xbox, PS4 and Nintendo controllers,
  3199     # so we'll just use libusb when it's available.
  3200     #
  3201     # Except that libusb requires root permissions to open devices, so that's not generally useful, and we'll disable this by default.
  3202     #
  3203     #  On macOS and Windows, where you don't need libusb or root, we default to yes.
  3204     skiplibusb=no
  3205     case "$host" in
  3206         *-*-cygwin* | *-*-mingw32* | *-*-darwin* )
  3207             skiplibusb=yes
  3208             ;;
  3209     esac
  3210 
  3211     AC_ARG_ENABLE(hidapi,
  3212 AS_HELP_STRING([--enable-hidapi], [use HIDAPI for low level joystick drivers [[default=maybe]]]),
  3213                   , enable_hidapi=maybe)
  3214     hidapi_support=no
  3215 
  3216     if test x$enable_hidapi = xmaybe; then
  3217       enable_hidapi=$skiplibusb
  3218     fi
  3219 
  3220     if test x$enable_joystick = xyes -a x$enable_hidapi = xyes; then
  3221         if test x$skiplibusb = xyes; then
  3222             hidapi_support=yes
  3223         else
  3224             PKG_CHECK_MODULES([LIBUSB], [libusb-1.0], have_libusb=yes, have_libusb=no)
  3225             save_CFLAGS="$CFLAGS"
  3226             CFLAGS="$save_CFLAGS $LIBUSB_CFLAGS"
  3227             AC_CHECK_HEADER(libusb.h, have_libusb_h=yes)
  3228             CFLAGS="$save_CFLAGS"
  3229             if test x$have_libusb_h = xyes; then
  3230                 hidapi_support=yes
  3231             fi
  3232         fi
  3233 
  3234         if test x$hidapi_support = xyes; then
  3235             AC_DEFINE(SDL_JOYSTICK_HIDAPI, 1, [ ])
  3236             EXTRA_CFLAGS="$EXTRA_CFLAGS -I$srcdir/src/hidapi/hidapi"
  3237             SOURCES="$SOURCES $srcdir/src/joystick/hidapi/*.c"
  3238 
  3239             if test x$skiplibusb = xno; then
  3240                 SOURCES="$SOURCES $srcdir/src/hidapi/libusb/hid.c"
  3241                 EXTRA_CFLAGS="$EXTRA_CFLAGS $LIBUSB_CFLAGS"
  3242                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $LIBUSB_LIBS"
  3243             fi
  3244         fi
  3245 
  3246         AC_MSG_CHECKING(for hidapi support)
  3247         AC_MSG_RESULT($hidapi_support)
  3248     fi
  3249 }
  3250 
  3251 dnl Check for clock_gettime()
  3252 CheckClockGettime()
  3253 {
  3254     AC_ARG_ENABLE(clock_gettime,
  3255 AS_HELP_STRING([--enable-clock_gettime], [use clock_gettime() instead of gettimeofday() on UNIX [[default=yes]]]),
  3256                   , enable_clock_gettime=yes)
  3257     if test x$enable_clock_gettime = xyes; then
  3258         AC_CHECK_LIB(rt, clock_gettime, have_clock_gettime=yes)
  3259         if test x$have_clock_gettime = xyes; then
  3260             AC_DEFINE(HAVE_CLOCK_GETTIME, 1, [ ])
  3261             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lrt"
  3262         else
  3263             AC_CHECK_LIB(c, clock_gettime, have_clock_gettime=yes)
  3264             if test x$have_clock_gettime = xyes; then
  3265                AC_DEFINE(HAVE_CLOCK_GETTIME, 1, [ ])
  3266                EXTRA_LDFLAGS="$EXTRA_LDFLAGS"
  3267             fi
  3268         fi
  3269     fi
  3270 }
  3271 
  3272 dnl Check for a valid linux/version.h
  3273 CheckLinuxVersion()
  3274 {
  3275     AC_CHECK_HEADER(linux/version.h, have_linux_version_h=yes)
  3276     if test x$have_linux_version_h = xyes; then
  3277         EXTRA_CFLAGS="$EXTRA_CFLAGS -DHAVE_LINUX_VERSION_H"
  3278     fi
  3279 }
  3280 
  3281 dnl Check if we want to use RPATH
  3282 CheckRPATH()
  3283 {
  3284     AC_ARG_ENABLE(rpath,
  3285 AS_HELP_STRING([--enable-rpath], [use an rpath when linking SDL [[default=yes]]]),
  3286                   , enable_rpath=yes)
  3287 }
  3288 
  3289 dnl Check if we want to use custom signals to fake iOS/Android's backgrounding
  3290 dnl  events. These could be useful if you're building a custom embedded
  3291 dnl  environment, etc, but most people don't need this.
  3292 CheckEventSignals()
  3293 {
  3294     AC_ARG_ENABLE(backgrounding-signal,
  3295 AS_HELP_STRING([--enable-backgrounding-signal], [number to use for magic backgrounding signal or 'no' [[default=no]]]),
  3296                   , enable_backgrounding_signal=no)
  3297     if test x$enable_backgrounding_signal != xno; then
  3298         EXTRA_CFLAGS="$EXTRA_CFLAGS -DSDL_BACKGROUNDING_SIGNAL=$enable_backgrounding_signal"
  3299     fi
  3300 
  3301     AC_ARG_ENABLE(foregrounding-signal,
  3302 AS_HELP_STRING([--enable-foregrounding-signal], [number to use for magic foregrounding signal or 'no' [[default=no]]]),
  3303                   , enable_foregrounding_signal=no)
  3304     if test x$enable_foregrounding_signal != xno; then
  3305         EXTRA_CFLAGS="$EXTRA_CFLAGS -DSDL_FOREGROUNDING_SIGNAL=$enable_foregrounding_signal"
  3306     fi
  3307 }
  3308 
  3309 
  3310 
  3311 dnl Do this on all platforms, before everything else (other things might want to override it).
  3312 CheckWarnAll
  3313 CheckNoStrictAliasing
  3314 
  3315 dnl Do this for every platform, but for some it doesn't mean anything, but better to catch it here anyhow.
  3316 CheckEventSignals
  3317 
  3318 dnl Set up the configuration based on the host platform!
  3319 case "$host" in
  3320     *-*-linux*|*-*-uclinux*|*-*-gnu*|*-*-k*bsd*-gnu|*-*-bsdi*|*-*-freebsd*|*-*-dragonfly*|*-*-netbsd*|*-*-openbsd*|*-*-sysv5*|*-*-solaris*|*-*-hpux*|*-*-aix*|*-*-minix*|*-*-nto*)
  3321         case "$host" in
  3322             *-*-android*)
  3323                 # Android
  3324                 ARCH=android
  3325                 ANDROID_CFLAGS="-DGL_GLEXT_PROTOTYPES"
  3326                 CFLAGS="$CFLAGS $ANDROID_CFLAGS"
  3327                 SDL_CFLAGS="$SDL_CFLAGS $ANDROID_CFLAGS"
  3328                 EXTRA_CFLAGS="$EXTRA_CFLAGS $ANDROID_CFLAGS"
  3329                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS -ldl -lGLESv1_CM -lGLESv2 -llog -landroid"
  3330                 SDLMAIN_SOURCES="$srcdir/src/main/android/*.c"
  3331 
  3332                 if test x$enable_video = xyes; then
  3333                     SOURCES="$SOURCES $srcdir/src/core/android/*.c $srcdir/src/video/android/*.c"
  3334                     # FIXME: confdefs? Not AC_DEFINE?
  3335                     $as_echo "#define SDL_VIDEO_DRIVER_ANDROID 1" >>confdefs.h
  3336                     SUMMARY_video="${SUMMARY_video} android"
  3337                 fi
  3338                 ;;
  3339             *-*-linux*)         ARCH=linux ;;
  3340             *-*-uclinux*)       ARCH=linux ;;
  3341             *-*-kfreebsd*-gnu)  ARCH=kfreebsd-gnu ;;
  3342             *-*-knetbsd*-gnu)   ARCH=knetbsd-gnu ;;
  3343             *-*-kopenbsd*-gnu)  ARCH=kopenbsd-gnu ;;
  3344             *-*-gnu*)           ARCH=gnu ;; # must be last of the gnu variants
  3345             *-*-bsdi*)          ARCH=bsdi ;;
  3346             *-*-freebsd*)       ARCH=freebsd ;;
  3347             *-*-dragonfly*)     ARCH=freebsd ;;
  3348             *-*-netbsd*)        ARCH=netbsd ;;
  3349             *-*-openbsd*)       ARCH=openbsd ;;
  3350             *-*-sysv5*)         ARCH=sysv5 ;;
  3351             *-*-solaris*)       ARCH=solaris ;;
  3352             *-*-hpux*)          ARCH=hpux ;;
  3353             *-*-aix*)           ARCH=aix ;;
  3354             *-*-minix*)         ARCH=minix ;;
  3355             *-*-nto*)           ARCH=nto
  3356                 CheckQNXVideo
  3357                 ;;
  3358         esac
  3359         CheckVisibilityHidden
  3360         CheckDeclarationAfterStatement
  3361         CheckDummyVideo
  3362         CheckDiskAudio
  3363         CheckDummyAudio
  3364         CheckDLOPEN
  3365         CheckOSS
  3366         CheckALSA
  3367         CheckPulseAudio
  3368         CheckJACK
  3369         CheckARTSC
  3370         CheckESD
  3371         CheckNAS
  3372         CheckSNDIO
  3373         CheckFusionSound
  3374         CheckLibSampleRate
  3375         # Need to check for Raspberry PI first and add platform specific compiler flags, otherwise the test for GLES fails!
  3376         CheckRPI
  3377         CheckX11
  3378         CheckDirectFB
  3379         CheckKMSDRM
  3380         CheckOpenGLX11
  3381         CheckOpenGLESX11
  3382         CheckVulkan
  3383         CheckWayland
  3384         CheckInputEvents
  3385         CheckLibUDev
  3386         CheckDBus
  3387         CheckIME
  3388         CheckIBus
  3389         CheckFcitx
  3390         case $ARCH in
  3391           linux)
  3392               CheckInputKD
  3393           ;;
  3394         esac
  3395         CheckTslib
  3396         CheckUSBHID
  3397         CheckHIDAPI
  3398         CheckPTHREAD
  3399         CheckClockGettime
  3400         CheckLinuxVersion
  3401         CheckRPATH
  3402         CheckVivanteVideo
  3403 
  3404         # Set up files for the audio library
  3405         if test x$enable_audio = xyes; then
  3406           case $ARCH in
  3407             sysv5|solaris|hpux)
  3408                 AC_DEFINE(SDL_AUDIO_DRIVER_SUNAUDIO, 1, [ ])
  3409                 SOURCES="$SOURCES $srcdir/src/audio/sun/*.c"
  3410                 SUMMARY_audio="${SUMMARY_audio} sun"
  3411                 have_audio=yes
  3412             ;;
  3413             netbsd)  # Don't use this on OpenBSD, it's busted.
  3414                 AC_DEFINE(SDL_AUDIO_DRIVER_NETBSD, 1, [ ])
  3415                 SOURCES="$SOURCES $srcdir/src/audio/netbsd/*.c"
  3416                 SUMMARY_audio="${SUMMARY_audio} netbsd"
  3417                 have_audio=yes
  3418             ;;
  3419             aix)
  3420                 AC_DEFINE(SDL_AUDIO_DRIVER_PAUDIO, 1, [ ])
  3421                 SOURCES="$SOURCES $srcdir/src/audio/paudio/*.c"
  3422                 SUMMARY_audio="${SUMMARY_audio} paudio"
  3423                 have_audio=yes
  3424             ;;
  3425             android)
  3426                 AC_DEFINE(SDL_AUDIO_DRIVER_ANDROID, 1, [ ])
  3427                 SOURCES="$SOURCES $srcdir/src/audio/android/*.c"
  3428                 SUMMARY_audio="${SUMMARY_audio} android"
  3429                 have_audio=yes
  3430             ;;
  3431             nto)
  3432                 CheckQNXAudio
  3433             ;;
  3434           esac
  3435         fi
  3436         # Set up files for the joystick library
  3437         if test x$enable_joystick = xyes; then
  3438           case $ARCH in
  3439             linux)
  3440                 AC_DEFINE(SDL_JOYSTICK_LINUX, 1, [ ])
  3441                 SOURCES="$SOURCES $srcdir/src/joystick/linux/*.c"
  3442                 SOURCES="$SOURCES $srcdir/src/joystick/steam/*.c"
  3443                 have_joystick=yes
  3444             ;;
  3445             android)
  3446                 AC_DEFINE(SDL_JOYSTICK_ANDROID, 1, [ ])
  3447                 SOURCES="$SOURCES $srcdir/src/joystick/android/*.c"
  3448                 SOURCES="$SOURCES $srcdir/src/joystick/steam/*.c"
  3449                 have_joystick=yes
  3450             ;;
  3451           esac
  3452         fi
  3453         # Set up files for the haptic library
  3454         if test x$enable_haptic = xyes; then
  3455           case $ARCH in
  3456             linux)
  3457                 if test x$use_input_events = xyes; then
  3458                     AC_DEFINE(SDL_HAPTIC_LINUX, 1, [ ])
  3459                     SOURCES="$SOURCES $srcdir/src/haptic/linux/*.c"
  3460                     have_haptic=yes
  3461                 fi
  3462             ;;
  3463             android)
  3464                 AC_DEFINE(SDL_HAPTIC_ANDROID, 1, [ ])
  3465                 SOURCES="$SOURCES $srcdir/src/haptic/android/*.c"
  3466                 have_haptic=yes
  3467             ;;
  3468           esac
  3469         fi
  3470         # Set up files for the sensor library
  3471         if test x$enable_sensor = xyes; then
  3472           case $ARCH in
  3473             android)
  3474                 AC_DEFINE(SDL_SENSOR_ANDROID, 1, [ ])
  3475                 SOURCES="$SOURCES $srcdir/src/sensor/android/*.c"
  3476                 have_sensor=yes
  3477             ;;
  3478           esac
  3479         fi
  3480         # Set up files for the power library
  3481         if test x$enable_power = xyes; then
  3482              case $ARCH in
  3483                linux)
  3484                    AC_DEFINE(SDL_POWER_LINUX, 1, [ ])
  3485                    SOURCES="$SOURCES $srcdir/src/power/linux/*.c"
  3486                    have_power=yes
  3487                ;;
  3488                android)
  3489                    AC_DEFINE(SDL_POWER_ANDROID, 1, [ ])
  3490                    SOURCES="$SOURCES $srcdir/src/power/android/*.c"
  3491                    have_power=yes
  3492                ;;
  3493              esac
  3494         fi
  3495         # Set up files for the filesystem library
  3496         if test x$enable_filesystem = xyes; then
  3497              case $ARCH in
  3498                android)
  3499                    AC_DEFINE(SDL_FILESYSTEM_ANDROID, 1, [ ])
  3500                    SOURCES="$SOURCES $srcdir/src/filesystem/android/*.c"
  3501                    have_filesystem=yes
  3502                ;;
  3503                *)
  3504                    AC_DEFINE(SDL_FILESYSTEM_UNIX, 1, [ ])
  3505                    SOURCES="$SOURCES $srcdir/src/filesystem/unix/*.c"
  3506                    have_filesystem=yes
  3507                ;;
  3508              esac
  3509         fi
  3510         # Set up files for the timer library
  3511         if test x$enable_timers = xyes; then
  3512             AC_DEFINE(SDL_TIMER_UNIX, 1, [ ])
  3513             SOURCES="$SOURCES $srcdir/src/timer/unix/*.c"
  3514             have_timers=yes
  3515         fi
  3516         # Set up files for udev hotplugging support
  3517         if test x$enable_libudev = xyes && test x$have_libudev_h_hdr = xyes; then
  3518             SOURCES="$SOURCES $srcdir/src/core/linux/SDL_udev.c"               
  3519         fi
  3520         # Set up files for evdev input
  3521         if test x$use_input_events = xyes; then
  3522             SOURCES="$SOURCES $srcdir/src/core/linux/SDL_evdev*.c"
  3523         fi       
  3524         # Set up other core UNIX files
  3525         SOURCES="$SOURCES $srcdir/src/core/linux/SDL_threadprio.c"
  3526         SOURCES="$SOURCES $srcdir/src/core/unix/*.c"
  3527         ;;
  3528     *-*-cygwin* | *-*-mingw32*)
  3529         ARCH=win32
  3530         if test "$build" != "$host"; then # cross-compiling
  3531             # Default cross-compile location
  3532             ac_default_prefix=/usr/local/cross-tools/$host
  3533         else
  3534             # Look for the location of the tools and install there
  3535             if test "$BUILD_PREFIX" != ""; then
  3536                 ac_default_prefix=$BUILD_PREFIX
  3537             fi
  3538         fi
  3539         CheckDeclarationAfterStatement
  3540         CheckDummyVideo
  3541         CheckDiskAudio
  3542         CheckDummyAudio
  3543         CheckWINDOWS
  3544         CheckWINDOWSGL
  3545         CheckWINDOWSGLES
  3546         CheckVulkan
  3547         CheckDIRECTX
  3548         CheckHIDAPI
  3549 
  3550         # Set up the core platform files
  3551         SOURCES="$SOURCES $srcdir/src/core/windows/*.c"
  3552 
  3553         # Set up files for the video library
  3554         if test x$enable_video = xyes; then
  3555             AC_DEFINE(SDL_VIDEO_DRIVER_WINDOWS, 1, [ ])
  3556             SOURCES="$SOURCES $srcdir/src/video/windows/*.c"
  3557             have_video=yes
  3558             AC_ARG_ENABLE(render-d3d,
  3559 AS_HELP_STRING([--enable-render-d3d], [enable the Direct3D render driver [[default=yes]]]),
  3560                                 , enable_render_d3d=yes)
  3561             if test x$enable_render_d3d = xyes -a x$have_d3d = xyes; then
  3562                 AC_DEFINE(SDL_VIDEO_RENDER_D3D, 1, [ ])
  3563                 SUMMARY_video="${SUMMARY_video} d3d9"
  3564             fi
  3565             if test x$enable_render_d3d = xyes -a x$have_d3d11 = xyes; then
  3566                 AC_DEFINE(SDL_VIDEO_RENDER_D3D11, 1, [ ])
  3567                 SUMMARY_video="${SUMMARY_video} d3d11"
  3568             fi
  3569         fi
  3570         # Set up files for the audio library
  3571         if test x$enable_audio = xyes; then
  3572             AC_DEFINE(SDL_AUDIO_DRIVER_WINMM, 1, [ ])
  3573             SUMMARY_audio="${SUMMARY_audio} winmm"
  3574             SOURCES="$SOURCES $srcdir/src/audio/winmm/*.c"
  3575             if test x$have_dsound = xyes; then
  3576                 AC_DEFINE(SDL_AUDIO_DRIVER_DSOUND, 1, [ ])
  3577                 SUMMARY_audio="${SUMMARY_audio} directsound"
  3578                 SOURCES="$SOURCES $srcdir/src/audio/directsound/*.c"
  3579             fi
  3580             if test x$have_wasapi = xyes -a x$enable_wasapi = xyes; then
  3581                 AC_DEFINE(SDL_AUDIO_DRIVER_WASAPI, 1, [ ])
  3582                 SUMMARY_audio="${SUMMARY_audio} wasapi"
  3583                 SOURCES="$SOURCES $srcdir/src/audio/wasapi/*.c"
  3584             fi
  3585             have_audio=yes
  3586         fi
  3587         # Set up files for the joystick library
  3588         if test x$enable_joystick = xyes; then
  3589             if test x$have_dinput = xyes -o x$have_xinput = xyes; then
  3590                 if test x$have_xinput = xyes; then
  3591                     AC_DEFINE(SDL_JOYSTICK_XINPUT, 1, [ ])
  3592                 fi
  3593                 if test x$have_dinput = xyes; then
  3594                     AC_DEFINE(SDL_JOYSTICK_DINPUT, 1, [ ])
  3595                     EXTRA_LDFLAGS="$EXTRA_LDFLAGS -ldinput8 -ldxguid -ldxerr8"
  3596                 fi
  3597             else
  3598                 AC_DEFINE(SDL_JOYSTICK_WINMM, 1, [ ])
  3599             fi
  3600             SOURCES="$SOURCES $srcdir/src/joystick/windows/*.c"
  3601             have_joystick=yes
  3602             if test x$hidapi_support = xyes; then
  3603                 SOURCES="$SOURCES $srcdir/src/hidapi/windows/hid.c"
  3604             fi
  3605         fi
  3606         if test x$enable_haptic = xyes; then
  3607             if test x$have_dinput = xyes -o x$have_xinput = xyes; then
  3608                 if test x$have_xinput = xyes; then
  3609                     AC_DEFINE(SDL_HAPTIC_XINPUT, 1, [ ])
  3610                 fi
  3611                 if test x$have_dinput = xyes; then
  3612                     AC_DEFINE(SDL_HAPTIC_DINPUT, 1, [ ])
  3613                 fi
  3614                 SOURCES="$SOURCES $srcdir/src/haptic/windows/*.c"
  3615                 have_haptic=yes
  3616             fi
  3617         fi
  3618         if test x$enable_power = xyes; then
  3619             AC_DEFINE(SDL_POWER_WINDOWS, 1, [ ])
  3620             SOURCES="$SOURCES $srcdir/src/power/windows/SDL_syspower.c"
  3621             have_power=yes
  3622         fi
  3623         if test x$enable_filesystem = xyes; then
  3624             AC_DEFINE(SDL_FILESYSTEM_WINDOWS, 1, [ ])
  3625             SOURCES="$SOURCES $srcdir/src/filesystem/windows/SDL_sysfilesystem.c"
  3626             have_filesystem=yes
  3627         fi
  3628         # Set up files for the thread library
  3629         if test x$enable_threads = xyes; then
  3630             AC_DEFINE(SDL_THREAD_WINDOWS, 1, [ ])
  3631             SOURCES="$SOURCES $srcdir/src/thread/windows/*.c"
  3632             SOURCES="$SOURCES $srcdir/src/thread/generic/SDL_syscond.c"
  3633             have_threads=yes
  3634         fi
  3635         # Set up files for the timer library
  3636         if test x$enable_timers = xyes; then
  3637             AC_DEFINE(SDL_TIMER_WINDOWS, 1, [ ])
  3638             SOURCES="$SOURCES $srcdir/src/timer/windows/*.c"
  3639             have_timers=yes
  3640         fi
  3641         # Set up files for the shared object loading library
  3642         if test x$enable_loadso = xyes; then
  3643             AC_DEFINE(SDL_LOADSO_WINDOWS, 1, [ ])
  3644             SOURCES="$SOURCES $srcdir/src/loadso/windows/*.c"
  3645             have_loadso=yes
  3646         fi
  3647         # Set up the system libraries we need
  3648         if test -f /lib/w32api/libuuid.a; then
  3649             LIBUUID=/lib/w32api/libuuid.a
  3650         else
  3651             LIBUUID=-luuid
  3652         fi
  3653         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -luser32 -lgdi32 -lwinmm -limm32 -lole32 -loleaut32 -lshell32 -lsetupapi -lversion $LIBUUID -static-libgcc"
  3654         # The Windows platform requires special setup
  3655         VERSION_SOURCES="$srcdir/src/main/windows/*.rc"
  3656         SDLMAIN_SOURCES="$srcdir/src/main/windows/*.c"
  3657         SDL_CFLAGS="$SDL_CFLAGS -Dmain=SDL_main"
  3658         SDL_LIBS="-lSDL2main $SDL_LIBS -mwindows"
  3659 
  3660         # Check to see if this is a mingw or cygwin build
  3661         have_mingw32=
  3662         AC_CHECK_LIB(mingw32, main, [have_mingw32=yes])
  3663         if test x$have_mingw32 = xyes; then
  3664             SDL_LIBS="-lmingw32 $SDL_LIBS"
  3665         else
  3666             SDL_LIBS="-lcygwin $SDL_LIBS"
  3667         fi
  3668         ;;
  3669 
  3670     dnl BeOS support removed after SDL 2.0.1. Haiku still works.  --ryan.
  3671     *-*-beos*)
  3672         AC_MSG_ERROR([
  3673 *** BeOS support has been removed as of SDL 2.0.2.
  3674         ])
  3675         ;;
  3676 
  3677     *-*-haiku*)
  3678         ARCH=haiku
  3679         ac_default_prefix=/boot/system
  3680         CheckDummyVideo
  3681         CheckDiskAudio
  3682         CheckDummyAudio
  3683         CheckDLOPEN
  3684         CheckHaikuVideo
  3685         CheckHaikuGL
  3686         CheckPTHREAD
  3687 
  3688         # Set up files for the audio library
  3689         if test x$enable_audio = xyes; then
  3690             AC_DEFINE(SDL_AUDIO_DRIVER_HAIKU, 1, [ ])
  3691             SOURCES="$SOURCES $srcdir/src/audio/haiku/*.cc"
  3692             SUMMARY_audio="${SUMMARY_audio} haiku"
  3693             have_audio=yes
  3694         fi
  3695         # Set up files for the joystick library
  3696         if test x$enable_joystick = xyes; then
  3697             AC_DEFINE(SDL_JOYSTICK_HAIKU, 1, [ ])
  3698             SOURCES="$SOURCES $srcdir/src/joystick/haiku/*.cc"
  3699             have_joystick=yes
  3700         fi
  3701         # Set up files for the timer library
  3702         if test x$enable_timers = xyes; then
  3703             AC_DEFINE(SDL_TIMER_HAIKU, 1, [ ])
  3704             SOURCES="$SOURCES $srcdir/src/timer/haiku/*.c"
  3705             have_timers=yes
  3706         fi
  3707         # Set up files for the system power library
  3708         if test x$enable_power = xyes; then
  3709             AC_DEFINE(SDL_POWER_HAIKU, 1, [ ])
  3710             SOURCES="$SOURCES $srcdir/src/power/haiku/*.c"
  3711             have_power=yes
  3712         fi
  3713         # Set up files for the system filesystem library
  3714         if test x$enable_filesystem = xyes; then
  3715             AC_DEFINE(SDL_FILESYSTEM_HAIKU, 1, [ ])
  3716             SOURCES="$SOURCES $srcdir/src/filesystem/haiku/*.cc"
  3717             have_filesystem=yes
  3718         fi
  3719         # The Haiku platform requires special setup.
  3720         SOURCES="$srcdir/src/main/haiku/*.cc $SOURCES"
  3721         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lroot -lbe -lmedia -lgame -ldevice -ltextencoding"
  3722         # Haiku's x86 spins use libstdc++.r4.so (for binary compat?), but
  3723         #  other spins, like x86-64, use a more standard "libstdc++.so.*"
  3724         AC_CHECK_FILE("/boot/system/lib/libstdc++.r4.so", EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lstdc++.r4", EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lstdc++")
  3725         ;;
  3726     arm*-apple-darwin*|*-ios-*)
  3727         ARCH=ios
  3728 
  3729         CheckVisibilityHidden
  3730         CheckDeclarationAfterStatement
  3731         CheckDummyVideo
  3732         CheckDiskAudio
  3733         CheckDummyAudio
  3734         CheckDLOPEN
  3735         CheckMETAL
  3736         CheckVulkan
  3737         CheckPTHREAD
  3738 
  3739         # Set up files for the audio library
  3740         if test x$enable_audio = xyes; then
  3741             AC_DEFINE(SDL_AUDIO_DRIVER_COREAUDIO, 1, [ ])
  3742             SOURCES="$SOURCES $srcdir/src/audio/coreaudio/*.m"
  3743             SUMMARY_audio="${SUMMARY_audio} coreaudio"
  3744             have_audio=yes
  3745         fi
  3746         # Set up files for the joystick library
  3747         if test x$enable_joystick = xyes; then
  3748             AC_DEFINE(SDL_JOYSTICK_MFI, 1, [ ])
  3749             SOURCES="$SOURCES $srcdir/src/joystick/iphoneos/*.m"
  3750             SOURCES="$SOURCES $srcdir/src/joystick/steam/*.c"
  3751             have_joystick=yes
  3752         fi
  3753         # Set up files for the haptic library
  3754         #if test x$enable_haptic = xyes; then
  3755         #    SOURCES="$SOURCES $srcdir/src/haptic/darwin/*.c"
  3756         #    have_haptic=yes
  3757         #    EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,ForceFeedback"
  3758         #fi
  3759         # Set up files for the power library
  3760         if test x$enable_power = xyes; then
  3761             AC_DEFINE(SDL_POWER_UIKIT, 1, [ ])
  3762             SOURCES="$SOURCES $srcdir/src/power/uikit/*.m"
  3763             have_power=yes
  3764         fi
  3765         # Set up files for the filesystem library
  3766         if test x$enable_filesystem = xyes; then
  3767             SOURCES="$SOURCES $srcdir/src/filesystem/cocoa/*.m"
  3768             have_filesystem=yes
  3769         fi
  3770         # Set up additional files for the file library
  3771         if test x$enable_file = xyes; then
  3772             AC_DEFINE(SDL_FILESYSTEM_COCOA, 1, [ ])
  3773             SOURCES="$SOURCES $srcdir/src/file/cocoa/*.m"
  3774         fi
  3775         # Set up files for the timer library
  3776         if test x$enable_timers = xyes; then
  3777             AC_DEFINE(SDL_TIMER_UNIX, 1, [ ])
  3778             SOURCES="$SOURCES $srcdir/src/timer/unix/*.c"
  3779             have_timers=yes
  3780         fi
  3781         # Set up other core UNIX files
  3782         SOURCES="$SOURCES $srcdir/src/core/unix/*.c"
  3783         # The iOS platform requires special setup.
  3784         AC_DEFINE(SDL_VIDEO_DRIVER_UIKIT, 1, [ ])
  3785         AC_DEFINE(SDL_VIDEO_OPENGL_ES2, 1, [ ])
  3786         AC_DEFINE(SDL_VIDEO_OPENGL_ES, 1, [ ])
  3787         AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES, 1, [ ])
  3788         AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES2, 1, [ ])
  3789         SOURCES="$SOURCES $srcdir/src/video/uikit/*.m"
  3790         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lm -liconv -lobjc"
  3791         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,AVFoundation"
  3792         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,AudioToolbox"
  3793         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,CoreAudio"
  3794         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,CoreGraphics"
  3795         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,CoreMotion"
  3796         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,Foundation"
  3797         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,GameController"
  3798         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,OpenGLES"
  3799         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,QuartzCore"
  3800         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,UIKit"
  3801 
  3802         if test x$enable_render = xyes -a x$enable_render_metal = xyes; then
  3803             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,Metal"
  3804         fi
  3805         ;;
  3806     *-*-darwin* )
  3807         # This could be either full "Mac OS X", or plain "Darwin" which is
  3808         # just the OS X kernel sans upper layers like Carbon and Cocoa.
  3809         # Next line is broken, and a few files below require Mac OS X (full)
  3810         ARCH=macosx
  3811 
  3812         # Mac OS X builds with both the Carbon and OSX APIs at the moment
  3813         EXTRA_CFLAGS="$EXTRA_CFLAGS -DTARGET_API_MAC_CARBON"
  3814         EXTRA_CFLAGS="$EXTRA_CFLAGS -DTARGET_API_MAC_OSX"
  3815 
  3816         CheckVisibilityHidden
  3817         CheckDeclarationAfterStatement
  3818         CheckDummyVideo
  3819         CheckDiskAudio
  3820         CheckDummyAudio
  3821         CheckDLOPEN
  3822         CheckCOCOA
  3823         CheckMETAL
  3824         CheckX11
  3825         CheckMacGL
  3826         CheckMacGLES
  3827         CheckOpenGLX11
  3828         CheckVulkan
  3829         CheckPTHREAD
  3830         CheckHIDAPI
  3831 
  3832         # Set up files for the audio library
  3833         if test x$enable_audio = xyes; then
  3834             AC_DEFINE(SDL_AUDIO_DRIVER_COREAUDIO, 1, [ ])
  3835             SOURCES="$SOURCES $srcdir/src/audio/coreaudio/*.m"
  3836             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,CoreAudio -Wl,-framework,AudioToolbox"
  3837             SUMMARY_audio="${SUMMARY_audio} coreaudio"
  3838             have_audio=yes
  3839         fi
  3840         # Set up files for the joystick library
  3841         if test x$enable_joystick = xyes; then
  3842             AC_DEFINE(SDL_JOYSTICK_IOKIT, 1, [ ])
  3843             SOURCES="$SOURCES $srcdir/src/joystick/darwin/*.c"
  3844             have_joystick=yes
  3845             if test x$hidapi_support = xyes; then
  3846                 SOURCES="$SOURCES $srcdir/src/hidapi/mac/hid.c"
  3847             fi
  3848         fi
  3849         # Set up files for the haptic library
  3850         if test x$enable_haptic = xyes; then
  3851             AC_DEFINE(SDL_HAPTIC_IOKIT, 1, [ ])
  3852             SOURCES="$SOURCES $srcdir/src/haptic/darwin/*.c"
  3853             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,ForceFeedback"
  3854             have_haptic=yes
  3855         fi
  3856         # Set up files for the power library
  3857         if test x$enable_power = xyes; then
  3858             AC_DEFINE(SDL_POWER_MACOSX, 1, [ ])
  3859             SOURCES="$SOURCES $srcdir/src/power/macosx/*.c"
  3860             have_power=yes
  3861         fi
  3862         # Set up files for the filesystem library
  3863         if test x$enable_filesystem = xyes; then
  3864             AC_DEFINE(SDL_FILESYSTEM_COCOA, 1, [ ])
  3865             SOURCES="$SOURCES $srcdir/src/filesystem/cocoa/*.m"
  3866             have_filesystem=yes
  3867         fi
  3868         # Set up files for the timer library
  3869         if test x$enable_timers = xyes; then
  3870             AC_DEFINE(SDL_TIMER_UNIX, 1, [ ])
  3871             SOURCES="$SOURCES $srcdir/src/timer/unix/*.c"
  3872             have_timers=yes
  3873         fi
  3874         # Set up additional files for the file library
  3875         if test x$enable_file = xyes; then
  3876             SOURCES="$SOURCES $srcdir/src/file/cocoa/*.m"
  3877         fi
  3878         # Set up other core UNIX files
  3879         SOURCES="$SOURCES $srcdir/src/core/unix/*.c"
  3880         # The Mac OS X platform requires special setup.
  3881         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lobjc"
  3882         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,CoreVideo"
  3883         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,Cocoa"
  3884         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,Carbon"
  3885         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,IOKit"
  3886 
  3887         if test x$enable_render = xyes -a x$enable_render_metal = xyes; then
  3888             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-weak_framework,QuartzCore -Wl,-weak_framework,Metal"
  3889         fi
  3890         ;;
  3891     *-nacl|*-pnacl)
  3892         ARCH=nacl
  3893         CheckNativeClient
  3894         CheckDummyAudio
  3895         CheckDummyVideo
  3896         CheckInputEvents
  3897         CheckPTHREAD
  3898 
  3899         # Set up files for the timer library
  3900         if test x$enable_timers = xyes; then
  3901             AC_DEFINE(SDL_TIMER_UNIX, 1, [ ])
  3902             SOURCES="$SOURCES $srcdir/src/timer/unix/*.c"
  3903             have_timers=yes
  3904         fi
  3905         
  3906         if test x$enable_filesystem = xyes; then
  3907             AC_DEFINE(SDL_FILESYSTEM_NACL, 1, [ ])
  3908             SOURCES="$SOURCES $srcdir/src/filesystem/nacl/*.c"
  3909             have_filesystem=yes
  3910         fi
  3911         ;;
  3912     *-*-emscripten* )
  3913         if test x$enable_video = xyes; then
  3914             AC_DEFINE(SDL_VIDEO_DRIVER_EMSCRIPTEN, 1, [ ])
  3915             SOURCES="$SOURCES $srcdir/src/video/emscripten/*.c"
  3916             have_video=yes
  3917             SUMMARY_video="${SUMMARY_video} emscripten"
  3918         fi
  3919 
  3920         if test x$enable_audio = xyes; then
  3921             AC_DEFINE(SDL_AUDIO_DRIVER_EMSCRIPTEN, 1, [ ])
  3922             SOURCES="$SOURCES $srcdir/src/audio/emscripten/*.c"
  3923             have_audio=yes
  3924             SUMMARY_audio="${SUMMARY_audio} emscripten"
  3925         fi
  3926 
  3927         CheckVisibilityHidden
  3928         CheckDeclarationAfterStatement
  3929         CheckDummyVideo
  3930         CheckDiskAudio
  3931         CheckDummyAudio
  3932         CheckDLOPEN
  3933         CheckClockGettime
  3934         CheckEmscriptenGLES
  3935 
  3936          # Set up files for the power library
  3937         if test x$enable_power = xyes; then
  3938             AC_DEFINE(SDL_POWER_EMSCRIPTEN, 1, [ ])
  3939             SOURCES="$SOURCES $srcdir/src/power/emscripten/*.c"
  3940             have_power=yes
  3941         fi
  3942         
  3943         # Set up files for the power library
  3944         if test x$enable_joystick = xyes; then
  3945             AC_DEFINE(SDL_JOYSTICK_EMSCRIPTEN, 1, [ ])
  3946             SOURCES="$SOURCES $srcdir/src/joystick/emscripten/*.c"
  3947             have_joystick=yes
  3948         fi
  3949 
  3950         # Set up files for the filesystem library
  3951         if test x$enable_filesystem = xyes; then
  3952             AC_DEFINE(SDL_FILESYSTEM_EMSCRIPTEN, 1, [ ])
  3953             SOURCES="$SOURCES $srcdir/src/filesystem/emscripten/*.c"
  3954             have_filesystem=yes
  3955         fi
  3956         # Set up files for the timer library
  3957         if test x$enable_timers = xyes; then
  3958             AC_DEFINE(SDL_TIMER_UNIX, 1, [ ])
  3959             SOURCES="$SOURCES $srcdir/src/timer/unix/*.c"
  3960             have_timers=yes
  3961         fi
  3962         ;;
  3963     *)
  3964         AC_MSG_ERROR([
  3965 *** Unsupported host:  Please add to configure.ac
  3966         ])
  3967         ;;
  3968 esac
  3969 
  3970 # Check whether to install sdl2-config
  3971 AC_MSG_CHECKING(whether to install sdl2-config)
  3972 AC_ARG_ENABLE([sdl2-config],
  3973     AS_HELP_STRING([--enable-sdl2-config], [Install sdl2-config [default=yes]]),
  3974     [case "${enableval}" in
  3975         yes) enable_sdl2_config="TRUE" ;;
  3976         no) enable_sdl2_config="FALSE" ;;
  3977         *) AC_MSG_ERROR([bad value '${enableval}' for --enable-sdl2-config]) ;;
  3978     esac], [enable_sdl2_config="TRUE"])
  3979 if test "$enable_sdl2_config" = "TRUE"; then
  3980     AC_MSG_RESULT(yes)
  3981 else
  3982     AC_MSG_RESULT(no)
  3983 fi
  3984 AC_SUBST([INSTALL_SDL2_CONFIG], [$enable_sdl2_config])
  3985 
  3986 # Verify that we have all the platform specific files we need
  3987 
  3988 if test x$have_joystick != xyes; then
  3989     if test x$enable_joystick = xyes; then
  3990         AC_DEFINE(SDL_JOYSTICK_DUMMY, 1, [ ])
  3991     fi
  3992     SOURCES="$SOURCES $srcdir/src/joystick/dummy/*.c"
  3993 fi
  3994 if test x$have_haptic != xyes; then
  3995     if test x$enable_haptic = xyes; then
  3996         AC_DEFINE(SDL_HAPTIC_DUMMY, 1, [ ])
  3997     fi
  3998     SOURCES="$SOURCES $srcdir/src/haptic/dummy/*.c"
  3999 fi
  4000 if test x$have_sensor != xyes; then
  4001     if test x$enable_sensor = xyes; then
  4002         AC_DEFINE(SDL_SENSOR_DUMMY, 1, [ ])
  4003     fi
  4004     SOURCES="$SOURCES $srcdir/src/sensor/dummy/*.c"
  4005 fi
  4006 if test x$have_threads != xyes; then
  4007     if test x$enable_threads = xyes; then
  4008         AC_DEFINE(SDL_THREADS_DISABLED, 1, [ ])
  4009     fi
  4010     SOURCES="$SOURCES $srcdir/src/thread/generic/*.c"
  4011 fi
  4012 if test x$have_timers != xyes; then
  4013     if test x$enable_timers = xyes; then
  4014         AC_DEFINE(SDL_TIMERS_DISABLED, 1, [ ])
  4015     fi
  4016     SOURCES="$SOURCES $srcdir/src/timer/dummy/*.c"
  4017 fi
  4018 if test x$have_filesystem != xyes; then
  4019     if test x$enable_filesystem = xyes; then
  4020         AC_DEFINE(SDL_FILESYSTEM_DISABLED, 1, [ ])
  4021     fi
  4022     SOURCES="$SOURCES $srcdir/src/filesystem/dummy/*.c"
  4023 fi
  4024 if test x$have_loadso != xyes; then
  4025     if test x$enable_loadso = xyes; then
  4026         AC_DEFINE(SDL_LOADSO_DISABLED, 1, [ ])
  4027     fi
  4028     SOURCES="$SOURCES $srcdir/src/loadso/dummy/*.c"
  4029 fi
  4030 if test x$SDLMAIN_SOURCES = x; then
  4031     SDLMAIN_SOURCES="$srcdir/src/main/dummy/*.c"
  4032 fi
  4033 SDLTEST_SOURCES="$srcdir/src/test/*.c"
  4034 
  4035 if test x$video_wayland = xyes; then
  4036     WAYLAND_PROTOCOLS=`cd $srcdir/wayland-protocols ; for p in *.xml ; do echo -n "\$p" |sed 's,\\.xml\$, ,g' ; done`
  4037     WAYLAND_PROTOCOLS_SOURCES=`for p in $WAYLAND_PROTOCOLS ; do echo -n "\\$(gen)/\$p-protocol.c " ; done`
  4038     WAYLAND_PROTOCOLS_HEADERS=`for p in $WAYLAND_PROTOCOLS ; do echo -n "\\$(gen)/\$p-client-protocol.h " ; done`
  4039     GEN_SOURCES="$GEN_SOURCES $WAYLAND_PROTOCOLS_SOURCES"
  4040     GEN_HEADERS="$GEN_HEADERS $WAYLAND_PROTOCOLS_HEADERS"
  4041 
  4042     WAYLAND_PROTOCOLS_DEPENDS=`for p in $WAYLAND_PROTOCOLS ; do\
  4043         echo ;\
  4044         echo "\\$(gen)/\$p-client-protocol.h: \\$(srcdir)/wayland-protocols/\$p.xml" ;\
  4045         echo "	@\\$(SHELL) \\$(auxdir)/mkinstalldirs \\$(gen)" ;\
  4046         echo "	\\$(RUN_CMD_GEN)\\$(WAYLAND_SCANNER) client-header \\$< \\$@" ;\
  4047         echo ;\
  4048         echo "\\$(gen)/\$p-protocol.c: \\$(srcdir)/wayland-protocols/\$p.xml" ;\
  4049         echo "	@\\$(SHELL) \\$(auxdir)/mkinstalldirs \\$(gen)" ;\
  4050         echo "	\\$(RUN_CMD_GEN)\\$(WAYLAND_SCANNER) code \\$< \\$@" ;\
  4051         echo ;\
  4052         echo "\\$(objects)/\$p-protocol.lo: \\$(gen)/\$p-protocol.c \\$(gen)/\$p-client-protocol.h" ;\
  4053         echo "	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@" ;\
  4054         done ;\
  4055         echo ;\
  4056         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`
  4057 fi
  4058 
  4059 OBJECTS=`echo $SOURCES`
  4060 DEPENDS=`echo $SOURCES | tr ' ' '\n'`
  4061 for EXT in asm cc m c S; do
  4062     OBJECTS=`echo "$OBJECTS" | sed 's,[[^ ]]*/\([[^ ]]*\)\.'$EXT',$(objects)/\1.lo,g'`
  4063     DEPENDS=`echo "$DEPENDS" | sed "s,^\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.$EXT\\$,\\\\
  4064 \\$(objects)/\\2.lo: \\1/\\2.$EXT \\$(objects)/.created\\\\
  4065 	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@,g"`
  4066 done
  4067 
  4068 GEN_OBJECTS=`echo "$GEN_SOURCES" | sed 's,[[^ ]]*/\([[^ ]]*\)\.c,$(objects)/\1.lo,g'`
  4069 
  4070 VERSION_OBJECTS=`echo $VERSION_SOURCES`
  4071 VERSION_DEPENDS=`echo $VERSION_SOURCES`
  4072 VERSION_OBJECTS=`echo "$VERSION_OBJECTS" | sed 's,[[^ ]]*/\([[^ ]]*\)\.rc,$(objects)/\1.o,g'`
  4073 VERSION_DEPENDS=`echo "$VERSION_DEPENDS" | sed "s,\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.rc,\\\\
  4074 \\$(objects)/\\2.o: \\1/\\2.rc\\\\
  4075 	\\$(WINDRES) \\$< \\$@,g"`
  4076 
  4077 SDLMAIN_OBJECTS=`echo $SDLMAIN_SOURCES`
  4078 SDLMAIN_DEPENDS=`echo $SDLMAIN_SOURCES`
  4079 SDLMAIN_OBJECTS=`echo "$SDLMAIN_OBJECTS" | sed 's,[[^ ]]*/\([[^ ]]*\)\.c,$(objects)/\1.lo,g'`
  4080 SDLMAIN_DEPENDS=`echo "$SDLMAIN_DEPENDS" | sed "s,\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.c,\\\\
  4081 \\$(objects)/\\2.lo: \\1/\\2.c \\$(objects)/.created\\\\
  4082 	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@,g"`
  4083 
  4084 SDLTEST_OBJECTS=`echo $SDLTEST_SOURCES`
  4085 SDLTEST_DEPENDS=`echo $SDLTEST_SOURCES`
  4086 SDLTEST_OBJECTS=`echo "$SDLTEST_OBJECTS" | sed 's,[[^ ]]*/\([[^ ]]*\)\.c,$(objects)/\1.lo,g'`
  4087 SDLTEST_DEPENDS=`echo "$SDLTEST_DEPENDS" | sed "s,\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.c,\\\\
  4088 \\$(objects)/\\2.lo: \\1/\\2.c \\$(objects)/.created\\\\
  4089 	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@,g"`
  4090 
  4091 # Set runtime shared library paths as needed
  4092 
  4093 if test "x$enable_rpath" = "xyes"; then
  4094   if test $ARCH = bsdi -o $ARCH = freebsd -o $ARCH = linux -o $ARCH = netbsd; then
  4095     SDL_RLD_FLAGS="-Wl,-rpath,\${libdir}"
  4096 
  4097     AC_MSG_CHECKING(for linker option --enable-new-dtags)
  4098     have_enable_new_dtags=no
  4099     save_LDFLAGS="$LDFLAGS"
  4100     LDFLAGS="$LDFLAGS -Wl,--enable-new-dtags"
  4101     AC_TRY_LINK([
  4102     ],[
  4103     ],[
  4104     have_enable_new_dtags=yes
  4105     SDL_RLD_FLAGS="$SDL_RLD_FLAGS -Wl,--enable-new-dtags"
  4106     ])
  4107     LDFLAGS="$save_LDFLAGS"
  4108     AC_MSG_RESULT($have_enable_new_dtags)
  4109   fi
  4110   if test $ARCH = solaris; then
  4111     SDL_RLD_FLAGS="-R\${libdir}"
  4112   fi
  4113 else
  4114   SDL_RLD_FLAGS=""
  4115 fi
  4116 
  4117 SDL_STATIC_LIBS="$SDL_LIBS $EXTRA_LDFLAGS"
  4118 
  4119 dnl Expand the cflags and libraries needed by apps using SDL
  4120 AC_SUBST(SDL_CFLAGS)
  4121 AC_SUBST(SDL_LIBS)
  4122 AC_SUBST(SDL_STATIC_LIBS)
  4123 AC_SUBST(SDL_RLD_FLAGS)
  4124 if test x$enable_shared = xyes; then
  4125     ENABLE_SHARED_TRUE=
  4126     ENABLE_SHARED_FALSE="#"
  4127 else
  4128     ENABLE_SHARED_TRUE="#"
  4129     ENABLE_SHARED_FALSE=
  4130 fi
  4131 if test x$enable_static = xyes; then
  4132     ENABLE_STATIC_TRUE=
  4133     ENABLE_STATIC_FALSE="#"
  4134 else
  4135     ENABLE_STATIC_TRUE="#"
  4136     ENABLE_STATIC_FALSE=
  4137 fi
  4138 AC_SUBST(ENABLE_SHARED_TRUE)
  4139 AC_SUBST(ENABLE_SHARED_FALSE)
  4140 AC_SUBST(ENABLE_STATIC_TRUE)
  4141 AC_SUBST(ENABLE_STATIC_FALSE)
  4142 
  4143 dnl Expand the sources and objects needed to build the library
  4144 AC_SUBST(ac_aux_dir)
  4145 AC_SUBST(INCLUDE)
  4146 AC_SUBST(OBJECTS)
  4147 AC_SUBST(GEN_HEADERS)
  4148 AC_SUBST(GEN_OBJECTS)
  4149 AC_SUBST(VERSION_OBJECTS)
  4150 AC_SUBST(SDLMAIN_OBJECTS)
  4151 AC_SUBST(SDLTEST_OBJECTS)
  4152 AC_SUBST(BUILD_CFLAGS)
  4153 AC_SUBST(EXTRA_CFLAGS)
  4154 AC_SUBST(BUILD_LDFLAGS)
  4155 AC_SUBST(EXTRA_LDFLAGS)
  4156 AC_SUBST(WINDRES)
  4157 AC_SUBST(WAYLAND_SCANNER)
  4158 
  4159 cat >Makefile.rules <<__EOF__
  4160 
  4161 # Build rules for objects
  4162 -include \$(OBJECTS:.lo=.d)
  4163 
  4164 # Special dependency for SDL.c, since it depends on SDL_revision.h
  4165 $srcdir/src/SDL.c: update-revision
  4166 $DEPENDS
  4167 $VERSION_DEPENDS
  4168 $SDLMAIN_DEPENDS
  4169 $SDLTEST_DEPENDS
  4170 $WAYLAND_PROTOCOLS_DEPENDS
  4171 __EOF__
  4172 
  4173 AC_CONFIG_FILES([
  4174     Makefile:Makefile.in:Makefile.rules sdl2-config sdl2-config.cmake SDL2.spec sdl2.pc
  4175 ])
  4176 AC_CONFIG_COMMANDS([sdl2_config],[chmod a+x sdl2-config])
  4177 
  4178 SUMMARY="SDL2 Configure Summary:\n"
  4179 if test x$enable_shared = xyes; then
  4180     SUMMARY="${SUMMARY}Building Shared Libraries\n"
  4181 fi
  4182 if test x$enable_static = xyes; then
  4183     SUMMARY="${SUMMARY}Building Static Libraries\n"
  4184 fi
  4185 SUMMARY="${SUMMARY}Enabled modules :${SUMMARY_modules}\n"
  4186 SUMMARY="${SUMMARY}Assembly Math   :${SUMMARY_math}\n" 
  4187 SUMMARY="${SUMMARY}Audio drivers   :${SUMMARY_audio}\n"
  4188 SUMMARY="${SUMMARY}Video drivers   :${SUMMARY_video}\n"
  4189 if test x$have_x = xyes; then
  4190     SUMMARY="${SUMMARY}X11 libraries   :${SUMMARY_video_x11}\n"
  4191 fi
  4192 SUMMARY="${SUMMARY}Input drivers   :${SUMMARY_input}\n"
  4193 if test x$have_samplerate_h_hdr = xyes; then
  4194     SUMMARY="${SUMMARY}Using libsamplerate : YES\n"
  4195 else
  4196     SUMMARY="${SUMMARY}Using libsamplerate : NO\n"
  4197 fi
  4198 if test x$have_libudev_h_hdr = xyes; then
  4199     SUMMARY="${SUMMARY}Using libudev       : YES\n"
  4200 else
  4201     SUMMARY="${SUMMARY}Using libudev       : NO\n"
  4202 fi
  4203 if test x$have_dbus_dbus_h_hdr = xyes; then
  4204     SUMMARY="${SUMMARY}Using dbus          : YES\n"
  4205 else
  4206     SUMMARY="${SUMMARY}Using dbus          : NO\n"
  4207 fi
  4208 if test x$enable_ime = xyes; then
  4209     SUMMARY="${SUMMARY}Using ime           : YES\n"
  4210 else
  4211     SUMMARY="${SUMMARY}Using ime           : NO\n"
  4212 fi
  4213 if test x$have_ibus_ibus_h_hdr = xyes; then
  4214     SUMMARY="${SUMMARY}Using ibus          : YES\n"
  4215 else
  4216     SUMMARY="${SUMMARY}Using ibus          : NO\n"
  4217 fi
  4218 if test x$have_fcitx_frontend_h_hdr = xyes; then
  4219     SUMMARY="${SUMMARY}Using fcitx         : YES\n"
  4220 else
  4221     SUMMARY="${SUMMARY}Using fcitx         : NO\n"
  4222 fi
  4223 AC_CONFIG_COMMANDS([summary], [echo -en "$SUMMARY"], [SUMMARY="$SUMMARY"])
  4224 
  4225 AC_OUTPUT