configure.in
author Ryan C. Gordon <icculus@icculus.org>
Sun, 27 Aug 2017 22:15:57 -0400
changeset 11365 a9bd2625fa01
parent 11337 d9f24e95e8ba
child 11367 e8fc755a89e8
permissions -rw-r--r--
vulkan: Initial Vulkan support!

This work was done by Jacob Lifshay and Mark Callow; I'm just merging it
into revision control.
     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="$CFLAGS"
     9 
    10 dnl Set various version strings - taken gratefully from the GTk sources
    11 #
    12 # Making releases:
    13 # Edit include/SDL_version.h and change the version, then:
    14 #   SDL_MICRO_VERSION += 1;
    15 #   SDL_INTERFACE_AGE += 1;
    16 #   SDL_BINARY_AGE += 1;
    17 # if any functions have been added, set SDL_INTERFACE_AGE to 0.
    18 # if backwards compatibility has been broken,
    19 # set SDL_BINARY_AGE and SDL_INTERFACE_AGE to 0.
    20 #
    21 SDL_MAJOR_VERSION=2
    22 SDL_MINOR_VERSION=0
    23 SDL_MICRO_VERSION=6
    24 SDL_INTERFACE_AGE=0
    25 SDL_BINARY_AGE=6
    26 SDL_VERSION=$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 - $SDL_INTERFACE_AGE`
    42 m4_pattern_allow([^LT_])
    43 
    44 AC_SUBST(LT_RELEASE)
    45 AC_SUBST(LT_CURRENT)
    46 AC_SUBST(LT_REVISION)
    47 AC_SUBST(LT_AGE)
    48 
    49 dnl Detect the canonical build and host environments
    50 dnl AC_CANONICAL_HOST
    51 
    52 dnl Check for tools
    53 AC_PROG_LIBTOOL
    54 AC_PROG_CC
    55 AC_PROG_CXX
    56 AC_PROG_INSTALL
    57 AC_PROG_MAKE_SET
    58 AC_CHECK_TOOL(WINDRES, [windres], [:])
    59 
    60 dnl Make sure that srcdir is a full pathname
    61 case "$host" in
    62     *-*-mingw32*)
    63         # Except on msys, where make can't handle full pathnames (bug 1972)
    64         ;;
    65     *)
    66         srcdir=`cd $srcdir && pwd`
    67         ;;
    68 esac
    69 
    70 dnl Set up the compiler and linker flags
    71 INCLUDE="-I$srcdir/include"
    72 if test x$srcdir != x.; then
    73     INCLUDE="-Iinclude $INCLUDE"
    74 elif test -d .hg; then
    75     AC_MSG_ERROR([
    76 *** When building from Mercurial you should configure and build in a
    77     separate directory so you don't clobber SDL_config.h, SDL_revision.h
    78 ])
    79 fi
    80 BASE_CFLAGS=""
    81 BASE_LDFLAGS=""
    82 case "$host" in
    83     *-*-cygwin*)
    84         # We build SDL on cygwin without the UNIX emulation layer
    85         save_CFLAGS="$CFLAGS"
    86         have_no_cygwin=no
    87         AC_MSG_CHECKING(for GCC -mno-cygwin option)
    88         CFLAGS="$save_CFLAGS -mno-cygwin"
    89 
    90         AC_TRY_COMPILE([
    91         ],[
    92         ],[
    93         have_no_cygwin=yes
    94         ])
    95         AC_MSG_RESULT($have_no_cygwin)
    96         CFLAGS="$save_CFLAGS"
    97 
    98         if test x$have_no_cygwin = xyes; then
    99             BASE_CFLAGS="-mno-cygwin"
   100             BASE_LDFLAGS="-mno-cygwin"
   101         fi
   102         BASE_CFLAGS="$BASE_CFLAGS -I/usr/include/mingw"
   103         ;;
   104 esac
   105 # Uncomment the following line if you want to force SDL and applications
   106 # built with it to be compiled for a particular architecture.
   107 #AX_GCC_ARCHFLAG([no], [BASE_CFLAGS="$BASE_CFLAGS $ax_cv_gcc_archflag]")
   108 BUILD_CFLAGS="$CFLAGS $CPPFLAGS -DUSING_GENERATED_CONFIG_H"
   109 # The default optimization for SDL is -O3 (Bug #31)
   110 if test "x$orig_CFLAGS" = x; then
   111     BUILD_CFLAGS=`echo $BUILD_CFLAGS | sed 's/-O2/-O3/'`
   112 fi
   113 EXTRA_CFLAGS="$INCLUDE $BASE_CFLAGS"
   114 BUILD_LDFLAGS="$LDFLAGS"
   115 EXTRA_LDFLAGS="$BASE_LDFLAGS"
   116 ## These are common directories to find software packages
   117 #for path in /usr/freeware /usr/pkg /usr/X11R6 /usr/local; do
   118 #    if test -d $path/include; then
   119 #        EXTRA_CFLAGS="$EXTRA_CFLAGS -I$path/include"
   120 #    fi
   121 #    if test -d $path/lib; then
   122 #        EXTRA_LDFLAGS="$EXTRA_LDFLAGS -L$path/lib"
   123 #    fi
   124 #done
   125 SDL_CFLAGS="$BASE_CFLAGS"
   126 SDL_LIBS="-lSDL2 $BASE_LDFLAGS"
   127 CPPFLAGS="$CPPFLAGS $EXTRA_CFLAGS"
   128 CFLAGS="$CFLAGS $EXTRA_CFLAGS"
   129 LDFLAGS="$LDFLAGS $EXTRA_LDFLAGS"
   130 
   131 dnl set this to use on systems that use lib64 instead of lib
   132 base_libdir=`echo \${libdir} | sed 's/.*\/\(.*\)/\1/; q'`
   133 
   134 dnl Function to find a library in the compiler search path
   135 find_lib()
   136 {
   137     gcc_bin_path=[`$CC -print-search-dirs 2>/dev/null | fgrep programs: | sed 's/[^=]*=\(.*\)/\1/' | sed 's/:/ /g'`]
   138     gcc_lib_path=[`$CC -print-search-dirs 2>/dev/null | fgrep libraries: | sed 's/[^=]*=\(.*\)/\1/' | sed 's/:/ /g'`]
   139     env_lib_path=[`echo $LIBS $LDFLAGS $* | sed 's/-L[ ]*//g'`]
   140     if test "$cross_compiling" = yes; then
   141         host_lib_path=""
   142     else
   143         host_lib_path="/usr/$base_libdir /usr/local/$base_libdir"
   144     fi
   145     for path in $env_lib_path $gcc_bin_path $gcc_lib_path $host_lib_path; do
   146         lib=[`ls -- $path/$1 2>/dev/null | sed -e '/\.so\..*\./d' -e 's,.*/,,' | sort | tail -1`]
   147         if test x$lib != x; then
   148             echo $lib
   149             return
   150         fi
   151     done
   152 }
   153 
   154 dnl Check for compiler characteristics
   155 AC_C_CONST
   156 AC_C_INLINE
   157 AC_C_VOLATILE
   158 
   159 dnl See whether we want assertions for debugging/sanity checking SDL itself.
   160 AC_ARG_ENABLE(assertions,
   161 AC_HELP_STRING([--enable-assertions],
   162                [Enable internal sanity checks (auto/disabled/release/enabled/paranoid) [[default=auto]]]),
   163               , enable_assertions=auto)
   164 case "$enable_assertions" in
   165     auto) # Use optimization settings to determine assertion level
   166         ;;
   167     disabled)
   168         AC_DEFINE(SDL_DEFAULT_ASSERT_LEVEL, 0, [ ])
   169         ;;
   170     release)
   171         AC_DEFINE(SDL_DEFAULT_ASSERT_LEVEL, 1, [ ])
   172         ;;
   173     enabled)
   174         AC_DEFINE(SDL_DEFAULT_ASSERT_LEVEL, 2, [ ])
   175         ;;
   176     paranoid)
   177         AC_DEFINE(SDL_DEFAULT_ASSERT_LEVEL, 3, [ ])
   178         ;;
   179     *)
   180         AC_MSG_ERROR([*** unknown assertion level. stop.])
   181         ;;
   182 esac
   183 
   184 dnl See whether we can use gcc style dependency tracking
   185 AC_ARG_ENABLE(dependency-tracking,
   186 AC_HELP_STRING([--enable-dependency-tracking],
   187                [Use gcc -MMD -MT dependency tracking [[default=yes]]]),
   188               , enable_dependency_tracking=yes)
   189 if test x$enable_dependency_tracking = xyes; then
   190     have_gcc_mmd_mt=no
   191     AC_MSG_CHECKING(for GCC -MMD -MT option)
   192     AC_TRY_COMPILE([
   193     #if !defined(__GNUC__) || __GNUC__ < 3
   194     #error Dependency tracking requires GCC 3.0 or newer
   195     #endif
   196     ],[
   197     ],[
   198     have_gcc_mmd_mt=yes
   199     ])
   200     AC_MSG_RESULT($have_gcc_mmd_mt)
   201 
   202     if test x$have_gcc_mmd_mt = xyes; then
   203         DEPENDENCY_TRACKING_OPTIONS="-MMD -MT \$@"
   204     fi
   205 fi
   206 
   207 AC_MSG_CHECKING(for linker option --no-undefined)
   208 have_no_undefined=no
   209 case "$host" in
   210     dnl Skip this on platforms where it is just simply busted.
   211     *-*-openbsd*)
   212         ;;
   213 
   214     *)
   215         save_LDFLAGS="$LDFLAGS"
   216         LDFLAGS="$LDFLAGS -Wl,--no-undefined"
   217         AC_TRY_LINK([
   218         ],[
   219         ],[
   220         have_no_undefined=yes
   221         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,--no-undefined"
   222         ])
   223         LDFLAGS="$save_LDFLAGS"
   224         ;;
   225 esac
   226 AC_MSG_RESULT($have_no_undefined)
   227 
   228 dnl See whether we are allowed to use the system C library
   229 AC_ARG_ENABLE(libc,
   230 AC_HELP_STRING([--enable-libc], [Use the system C library [[default=yes]]]),
   231               , enable_libc=yes)
   232 if test x$enable_libc = xyes; then
   233     AC_DEFINE(HAVE_LIBC, 1, [ ])
   234 
   235     dnl Check for C library headers
   236     AC_HEADER_STDC
   237     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 ctype.h math.h iconv.h signal.h)
   238 
   239     dnl Check for typedefs, structures, etc.
   240     AC_TYPE_SIZE_T
   241 
   242     dnl Check for defines
   243     AC_CHECK_DEFINE(M_PI, math.h)
   244 
   245     dnl Checks for library functions.
   246     case "$host" in
   247     *-*-cygwin* | *-*-mingw32*)
   248         ;;
   249     *)
   250         AC_FUNC_ALLOCA
   251         ;;
   252     esac
   253 
   254     AC_FUNC_MEMCMP
   255     if test x$ac_cv_func_memcmp_working = xyes; then
   256         AC_DEFINE(HAVE_MEMCMP, 1, [ ])
   257     fi
   258     AC_FUNC_STRTOD
   259     if test x$ac_cv_func_strtod = xyes; then
   260         AC_DEFINE(HAVE_STRTOD, 1, [ ])
   261     fi
   262     AC_CHECK_FUNC(mprotect,
   263         AC_TRY_COMPILE([
   264           #include <sys/types.h>
   265           #include <sys/mman.h>
   266         ],[
   267         ],[
   268         AC_DEFINE(HAVE_MPROTECT, 1, [ ])
   269         ]),
   270     )
   271     AC_CHECK_FUNCS(malloc calloc realloc free getenv setenv putenv unsetenv qsort abs bcopy memset memcpy memmove wcslen wcscmp strlen strlcpy strlcat strdup _strrev _strupr _strlwr strchr strrchr strstr itoa _ltoa _uitoa _ultoa strtol strtoul _i64toa _ui64toa strtoll strtoull atoi atof strcmp strncmp _stricmp strcasecmp _strnicmp strncasecmp vsscanf vsnprintf fopen64 fseeko fseeko64 sigaction setjmp nanosleep sysconf sysctlbyname getauxval poll)
   272 
   273     AC_CHECK_LIB(m, pow, [LIBS="$LIBS -lm"; EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lm"])
   274     AC_CHECK_FUNCS(atan atan2 acos asin ceil copysign cos cosf fabs floor log pow scalbn sin sinf sqrt sqrtf tan tanf)
   275 
   276     AC_CHECK_LIB(iconv, iconv_open, [LIBS="$LIBS -liconv"; EXTRA_LDFLAGS="$EXTRA_LDFLAGS -liconv"])
   277     AC_CHECK_FUNCS(iconv)
   278 
   279     AC_CHECK_MEMBER(struct sigaction.sa_sigaction,[AC_DEFINE([HAVE_SA_SIGACTION], 1, [ ])], ,[#include <signal.h>])
   280 fi
   281 
   282 dnl AC_CHECK_SIZEOF(void*)
   283 
   284 dnl See whether we can use gcc atomic operations on this architecture
   285 AC_ARG_ENABLE(gcc-atomics,
   286 AC_HELP_STRING([--enable-gcc-atomics],
   287                [Use gcc builtin atomics [[default=yes]]]),
   288               , enable_gcc_atomics=yes)
   289 if test x$enable_gcc_atomics = xyes; then
   290     have_gcc_atomics=no
   291     AC_MSG_CHECKING(for GCC builtin atomic operations)
   292     AC_TRY_LINK([
   293     ],[
   294     int a;
   295     void *x, *y, *z;
   296     __sync_lock_test_and_set(&a, 4);
   297     __sync_lock_test_and_set(&x, y);
   298     __sync_fetch_and_add(&a, 1);
   299     __sync_bool_compare_and_swap(&a, 5, 10);
   300     __sync_bool_compare_and_swap(&x, y, z);
   301     ],[
   302     have_gcc_atomics=yes
   303     ])
   304     AC_MSG_RESULT($have_gcc_atomics)
   305 
   306     if test x$have_gcc_atomics = xyes; then
   307         AC_DEFINE(HAVE_GCC_ATOMICS, 1, [ ])
   308     else
   309         # See if we have the minimum operation needed for GCC atomics
   310         AC_TRY_LINK([
   311         ],[
   312         int a;
   313         __sync_lock_test_and_set(&a, 1);
   314         __sync_lock_release(&a);
   315         ],[
   316         have_gcc_sync_lock_test_and_set=yes
   317         ])
   318         if test x$have_gcc_sync_lock_test_and_set = xyes; then
   319             AC_DEFINE(HAVE_GCC_SYNC_LOCK_TEST_AND_SET, 1, [ ])
   320         fi
   321     fi
   322 fi
   323 
   324 # Standard C sources
   325 SOURCES="$SOURCES $srcdir/src/*.c"
   326 SOURCES="$SOURCES $srcdir/src/atomic/*.c"
   327 SOURCES="$SOURCES $srcdir/src/audio/*.c"
   328 SOURCES="$SOURCES $srcdir/src/cpuinfo/*.c"
   329 SOURCES="$SOURCES $srcdir/src/dynapi/*.c"
   330 SOURCES="$SOURCES $srcdir/src/events/*.c"
   331 SOURCES="$SOURCES $srcdir/src/file/*.c"
   332 SOURCES="$SOURCES $srcdir/src/haptic/*.c"
   333 SOURCES="$SOURCES $srcdir/src/joystick/*.c"
   334 SOURCES="$SOURCES $srcdir/src/libm/*.c"
   335 SOURCES="$SOURCES $srcdir/src/power/*.c"
   336 #SOURCES="$SOURCES $srcdir/src/filesystem/*.c"
   337 SOURCES="$SOURCES $srcdir/src/render/*.c"
   338 SOURCES="$SOURCES $srcdir/src/render/*/*.c"
   339 SOURCES="$SOURCES $srcdir/src/stdlib/*.c"
   340 SOURCES="$SOURCES $srcdir/src/thread/*.c"
   341 SOURCES="$SOURCES $srcdir/src/timer/*.c"
   342 SOURCES="$SOURCES $srcdir/src/video/*.c"
   343 
   344 dnl Enable/disable various subsystems of the SDL library
   345 
   346 AC_ARG_ENABLE(atomic,
   347 AC_HELP_STRING([--enable-atomic], [Enable the atomic operations subsystem [[default=yes]]]),
   348               , enable_atomic=yes)
   349 if test x$enable_atomic != xyes; then
   350     AC_DEFINE(SDL_ATOMIC_DISABLED, 1, [ ])
   351 else
   352     SUMMARY_modules="${SUMMARY_modules} atomic"
   353 fi
   354 AC_ARG_ENABLE(audio,
   355 AC_HELP_STRING([--enable-audio], [Enable the audio subsystem [[default=yes]]]),
   356               , enable_audio=yes)
   357 if test x$enable_audio != xyes; then
   358     AC_DEFINE(SDL_AUDIO_DISABLED, 1, [ ])
   359 else
   360     SUMMARY_modules="${SUMMARY_modules} audio"
   361 fi
   362 AC_ARG_ENABLE(video,
   363 AC_HELP_STRING([--enable-video], [Enable the video subsystem [[default=yes]]]),
   364               , enable_video=yes)
   365 if test x$enable_video != xyes; then
   366     AC_DEFINE(SDL_VIDEO_DISABLED, 1, [ ])
   367 else
   368     SUMMARY_modules="${SUMMARY_modules} video"
   369 fi
   370 AC_ARG_ENABLE(render,
   371 AC_HELP_STRING([--enable-render], [Enable the render subsystem [[default=yes]]]),
   372               , enable_render=yes)
   373 if test x$enable_render != xyes; then
   374     AC_DEFINE(SDL_RENDER_DISABLED, 1, [ ])
   375 else
   376     SUMMARY_modules="${SUMMARY_modules} render"
   377 fi
   378 AC_ARG_ENABLE(events,
   379 AC_HELP_STRING([--enable-events], [Enable the events subsystem [[default=yes]]]),
   380               , enable_events=yes)
   381 if test x$enable_events != xyes; then
   382     AC_DEFINE(SDL_EVENTS_DISABLED, 1, [ ])
   383 else
   384     SUMMARY_modules="${SUMMARY_modules} events"
   385 fi
   386 AC_ARG_ENABLE(joystick,
   387 AC_HELP_STRING([--enable-joystick], [Enable the joystick subsystem [[default=yes]]]),
   388               , enable_joystick=yes)
   389 if test x$enable_joystick != xyes; then
   390     AC_DEFINE(SDL_JOYSTICK_DISABLED, 1, [ ])
   391 else
   392     SUMMARY_modules="${SUMMARY_modules} joystick"
   393 fi
   394 AC_ARG_ENABLE(haptic,
   395 AC_HELP_STRING([--enable-haptic], [Enable the haptic (force feedback) subsystem [[default=yes]]]),
   396               , enable_haptic=yes)
   397 if test x$enable_haptic != xyes; then
   398     AC_DEFINE(SDL_HAPTIC_DISABLED, 1, [ ])
   399 else
   400     SUMMARY_modules="${SUMMARY_modules} haptic"
   401 fi
   402 AC_ARG_ENABLE(power,
   403 AC_HELP_STRING([--enable-power], [Enable the power subsystem [[default=yes]]]),
   404               , enable_power=yes)
   405 if test x$enable_power != xyes; then
   406     AC_DEFINE(SDL_POWER_DISABLED, 1, [ ])
   407 else
   408     SUMMARY_modules="${SUMMARY_modules} power"
   409 fi
   410 AC_ARG_ENABLE(filesystem,
   411 AC_HELP_STRING([--enable-filesystem], [Enable the filesystem subsystem [[default=yes]]]),
   412               , enable_filesystem=yes)
   413 if test x$enable_filesystem != xyes; then
   414     AC_DEFINE(SDL_FILESYSTEM_DISABLED, 1, [ ])
   415 else
   416     SUMMARY_modules="${SUMMARY_modules} filesystem"
   417 fi
   418 AC_ARG_ENABLE(threads,
   419 AC_HELP_STRING([--enable-threads], [Enable the threading subsystem [[default=yes]]]),
   420               , enable_threads=yes)
   421 if test x$enable_threads != xyes; then
   422     AC_DEFINE(SDL_THREADS_DISABLED, 1, [ ])
   423 else
   424     SUMMARY_modules="${SUMMARY_modules} threads"
   425 fi
   426 AC_ARG_ENABLE(timers,
   427 AC_HELP_STRING([--enable-timers], [Enable the timer subsystem [[default=yes]]]),
   428               , enable_timers=yes)
   429 if test x$enable_timers != xyes; then
   430     AC_DEFINE(SDL_TIMERS_DISABLED, 1, [ ])
   431 else
   432     SUMMARY_modules="${SUMMARY_modules} timers"
   433 fi
   434 AC_ARG_ENABLE(file,
   435 AC_HELP_STRING([--enable-file], [Enable the file subsystem [[default=yes]]]),
   436               , enable_file=yes)
   437 if test x$enable_file != xyes; then
   438     AC_DEFINE(SDL_FILE_DISABLED, 1, [ ])
   439 else
   440     SUMMARY_modules="${SUMMARY_modules} file"
   441 fi
   442 AC_ARG_ENABLE(loadso,
   443 AC_HELP_STRING([--enable-loadso], [Enable the shared object loading subsystem [[default=yes]]]),
   444               , enable_loadso=yes)
   445 if test x$enable_loadso != xyes; then
   446     AC_DEFINE(SDL_LOADSO_DISABLED, 1, [ ])
   447 else
   448     SUMMARY_modules="${SUMMARY_modules} loadso"
   449 fi
   450 AC_ARG_ENABLE(cpuinfo,
   451 AC_HELP_STRING([--enable-cpuinfo], [Enable the cpuinfo subsystem [[default=yes]]]),
   452               , enable_cpuinfo=yes)
   453 if test x$enable_cpuinfo != xyes; then
   454     AC_DEFINE(SDL_CPUINFO_DISABLED, 1, [ ])
   455 else
   456     SUMMARY_modules="${SUMMARY_modules} cpuinfo"
   457 fi
   458 AC_ARG_ENABLE(assembly,
   459 AC_HELP_STRING([--enable-assembly], [Enable assembly routines [[default=yes]]]),
   460               , enable_assembly=yes)
   461 if test x$enable_assembly = xyes; then
   462     SUMMARY_modules="${SUMMARY_modules} assembly"
   463 
   464     AC_DEFINE(SDL_ASSEMBLY_ROUTINES, 1, [ ])
   465 
   466     # Make sure that we don't generate floating point code that would
   467     # cause illegal instruction exceptions on older processors
   468     case "$host" in
   469         *-*-darwin*)
   470             # Don't need to worry about Apple hardware, it's all SSE capable
   471             default_ssemath=yes
   472             ;;
   473         *64-*-*)
   474             # x86 64-bit architectures all have SSE instructions
   475             default_ssemath=yes
   476             ;;
   477         *)
   478             default_ssemath=no
   479             ;;
   480     esac
   481     AC_ARG_ENABLE(ssemath,
   482 AC_HELP_STRING([--enable-ssemath], [Allow GCC to use SSE floating point math [[default=maybe]]]),
   483                   , enable_ssemath=$default_ssemath)
   484     if test x$enable_ssemath = xno; then
   485         if test x$have_gcc_sse = xyes -o x$have_gcc_sse2 = xyes -o x$have_gcc_sse3 = xyes; then
   486             EXTRA_CFLAGS="$EXTRA_CFLAGS -mfpmath=387"
   487         fi
   488     fi
   489 
   490     dnl Check for various instruction support
   491     AC_ARG_ENABLE(mmx,
   492 AC_HELP_STRING([--enable-mmx], [use MMX assembly routines [[default=yes]]]),
   493                   , enable_mmx=yes)
   494     if test x$enable_mmx = xyes; then
   495         save_CFLAGS="$CFLAGS"
   496         have_gcc_mmx=no
   497         AC_MSG_CHECKING(for GCC -mmmx option)
   498         mmx_CFLAGS="-mmmx"
   499         CFLAGS="$save_CFLAGS $mmx_CFLAGS"
   500 
   501         AC_TRY_COMPILE([
   502         #ifdef __MINGW32__
   503         #include <_mingw.h>
   504         #ifdef __MINGW64_VERSION_MAJOR
   505         #include <intrin.h>
   506         #else
   507         #include <mmintrin.h>
   508         #endif
   509         #else
   510         #include <mmintrin.h>
   511         #endif
   512         #ifndef __MMX__
   513         #error Assembler CPP flag not enabled
   514         #endif
   515         ],[
   516         ],[
   517         have_gcc_mmx=yes
   518         ])
   519         AC_MSG_RESULT($have_gcc_mmx)
   520         CFLAGS="$save_CFLAGS"
   521 
   522         if test x$have_gcc_mmx = xyes; then
   523             EXTRA_CFLAGS="$EXTRA_CFLAGS $mmx_CFLAGS"
   524             SUMMARY_math="${SUMMARY_math} mmx"
   525         fi
   526     fi
   527 
   528     AC_ARG_ENABLE(3dnow,
   529 AC_HELP_STRING([--enable-3dnow], [use 3DNow! assembly routines [[default=yes]]]),
   530                   , enable_3dnow=yes)
   531     if test x$enable_3dnow = xyes; then
   532         save_CFLAGS="$CFLAGS"
   533         have_gcc_3dnow=no
   534         AC_MSG_CHECKING(for GCC -m3dnow option)
   535         amd3dnow_CFLAGS="-m3dnow"
   536         CFLAGS="$save_CFLAGS $amd3dnow_CFLAGS"
   537 
   538         AC_TRY_LINK([
   539         #include <mm3dnow.h>
   540         #ifndef __3dNOW__
   541         #error Assembler CPP flag not enabled
   542         #endif
   543         ],[
   544         void *p = 0;
   545         _m_prefetch(p);
   546         ],[
   547         have_gcc_3dnow=yes
   548         ])
   549         AC_MSG_RESULT($have_gcc_3dnow)
   550         CFLAGS="$save_CFLAGS"
   551 
   552         if test x$have_gcc_3dnow = xyes; then
   553             EXTRA_CFLAGS="$EXTRA_CFLAGS $amd3dnow_CFLAGS"
   554             SUMMARY_math="${SUMMARY_math} 3dnow"
   555         fi
   556     fi
   557 
   558     AC_ARG_ENABLE(sse,
   559 AC_HELP_STRING([--enable-sse], [use SSE assembly routines [[default=yes]]]),
   560                   , enable_sse=yes)
   561     if test x$enable_sse = xyes; then
   562         save_CFLAGS="$CFLAGS"
   563         have_gcc_sse=no
   564         AC_MSG_CHECKING(for GCC -msse option)
   565         sse_CFLAGS="-msse"
   566         CFLAGS="$save_CFLAGS $sse_CFLAGS"
   567 
   568         AC_TRY_COMPILE([
   569         #ifdef __MINGW32__
   570         #include <_mingw.h>
   571         #ifdef __MINGW64_VERSION_MAJOR
   572         #include <intrin.h>
   573         #else
   574         #include <xmmintrin.h>
   575         #endif
   576         #else
   577         #include <xmmintrin.h>
   578         #endif
   579         #ifndef __SSE__
   580         #error Assembler CPP flag not enabled
   581         #endif
   582         ],[
   583         ],[
   584         have_gcc_sse=yes
   585         ])
   586         AC_MSG_RESULT($have_gcc_sse)
   587         CFLAGS="$save_CFLAGS"
   588 
   589         if test x$have_gcc_sse = xyes; then
   590             EXTRA_CFLAGS="$EXTRA_CFLAGS $sse_CFLAGS"
   591             SUMMARY_math="${SUMMARY_math} sse"
   592         fi
   593     fi
   594 
   595     AC_ARG_ENABLE(sse2,
   596 AC_HELP_STRING([--enable-sse2], [use SSE2 assembly routines [[default=maybe]]]),
   597                   , enable_sse2=$default_ssemath)
   598     if test x$enable_sse2 = xyes; then
   599         save_CFLAGS="$CFLAGS"
   600         have_gcc_sse2=no
   601         AC_MSG_CHECKING(for GCC -msse2 option)
   602         sse2_CFLAGS="-msse2"
   603         CFLAGS="$save_CFLAGS $sse2_CFLAGS"
   604 
   605         AC_TRY_COMPILE([
   606         #ifdef __MINGW32__
   607         #include <_mingw.h>
   608         #ifdef __MINGW64_VERSION_MAJOR
   609         #include <intrin.h>
   610         #else
   611         #include <emmintrin.h>
   612         #endif
   613         #else
   614         #include <emmintrin.h>
   615         #endif
   616         #ifndef __SSE2__
   617         #error Assembler CPP flag not enabled
   618         #endif
   619         ],[
   620         ],[
   621         have_gcc_sse2=yes
   622         ])
   623         AC_MSG_RESULT($have_gcc_sse2)
   624         CFLAGS="$save_CFLAGS"
   625 
   626         if test x$have_gcc_sse2 = xyes; then
   627             EXTRA_CFLAGS="$EXTRA_CFLAGS $sse2_CFLAGS"
   628             SUMMARY_math="${SUMMARY_math} sse2"
   629         fi
   630     fi
   631 
   632     AC_ARG_ENABLE(sse3,
   633 AC_HELP_STRING([--enable-sse3], [use SSE3 assembly routines [[default=maybe]]]),
   634                   , enable_sse3=$default_ssemath)
   635     if test x$enable_sse3 = xyes; then
   636         save_CFLAGS="$CFLAGS"
   637         have_gcc_sse3=no
   638         AC_MSG_CHECKING(for GCC -msse3 option)
   639         sse3_CFLAGS="-msse3"
   640         CFLAGS="$save_CFLAGS $sse3_CFLAGS"
   641 
   642         AC_TRY_COMPILE([
   643         #ifdef __MINGW32__
   644         #include <_mingw.h>
   645         #ifdef __MINGW64_VERSION_MAJOR
   646         #include <intrin.h>
   647         #else
   648         #include <pmmintrin.h>
   649         #endif
   650         #else
   651         #include <pmmintrin.h>
   652         #endif
   653         #ifndef __SSE2__
   654         #error Assembler CPP flag not enabled
   655         #endif
   656         ],[
   657         ],[
   658         have_gcc_sse3=yes
   659         ])
   660         AC_MSG_RESULT($have_gcc_sse3)
   661         CFLAGS="$save_CFLAGS"
   662 
   663         if test x$have_gcc_sse3 = xyes; then
   664             EXTRA_CFLAGS="$EXTRA_CFLAGS $sse3_CFLAGS"
   665             SUMMARY_math="${SUMMARY_math} sse3"
   666         fi
   667     fi
   668 
   669     AC_ARG_ENABLE(altivec,
   670 AC_HELP_STRING([--enable-altivec], [use Altivec assembly routines [[default=yes]]]),
   671                   , enable_altivec=yes)
   672     if test x$enable_altivec = xyes; then
   673         save_CFLAGS="$CFLAGS"
   674         have_gcc_altivec=no
   675         have_altivec_h_hdr=no
   676         altivec_CFLAGS="-maltivec"
   677         CFLAGS="$save_CFLAGS $altivec_CFLAGS"
   678 
   679         AC_MSG_CHECKING(for Altivec with GCC altivec.h and -maltivec option)
   680         AC_TRY_COMPILE([
   681         #include <altivec.h>
   682         vector unsigned int vzero() {
   683             return vec_splat_u32(0);
   684         }
   685         ],[
   686         ],[
   687         have_gcc_altivec=yes
   688         have_altivec_h_hdr=yes
   689         ])
   690         AC_MSG_RESULT($have_gcc_altivec)
   691 
   692         if test x$have_gcc_altivec = xno; then
   693             AC_MSG_CHECKING(for Altivec with GCC -maltivec option)
   694             AC_TRY_COMPILE([
   695             vector unsigned int vzero() {
   696                 return vec_splat_u32(0);
   697             }
   698             ],[
   699             ],[
   700             have_gcc_altivec=yes
   701             ])
   702             AC_MSG_RESULT($have_gcc_altivec)
   703         fi
   704 
   705         if test x$have_gcc_altivec = xno; then
   706             AC_MSG_CHECKING(for Altivec with GCC altivec.h and -faltivec option)
   707             altivec_CFLAGS="-faltivec"
   708             CFLAGS="$save_CFLAGS $altivec_CFLAGS"
   709             AC_TRY_COMPILE([
   710             #include <altivec.h>
   711             vector unsigned int vzero() {
   712                 return vec_splat_u32(0);
   713             }
   714             ],[
   715             ],[
   716             have_gcc_altivec=yes
   717             have_altivec_h_hdr=yes
   718             ])
   719             AC_MSG_RESULT($have_gcc_altivec)
   720         fi
   721 
   722         if test x$have_gcc_altivec = xno; then
   723             AC_MSG_CHECKING(for Altivec with GCC -faltivec option)
   724             AC_TRY_COMPILE([
   725             vector unsigned int vzero() {
   726                 return vec_splat_u32(0);
   727             }
   728             ],[
   729             ],[
   730             have_gcc_altivec=yes
   731             ])
   732             AC_MSG_RESULT($have_gcc_altivec)
   733         fi
   734         CFLAGS="$save_CFLAGS"
   735 
   736         if test x$have_gcc_altivec = xyes; then
   737             AC_DEFINE(SDL_ALTIVEC_BLITTERS, 1, [ ])
   738             if test x$have_altivec_h_hdr = xyes; then
   739               AC_DEFINE(HAVE_ALTIVEC_H, 1, [ ])
   740             fi
   741             EXTRA_CFLAGS="$EXTRA_CFLAGS $altivec_CFLAGS"
   742             SUMMARY_math="${SUMMARY_math} altivec"
   743         fi
   744     fi
   745 fi
   746 
   747 dnl See if the OSS audio interface is supported
   748 CheckOSS()
   749 {
   750     AC_ARG_ENABLE(oss,
   751 AC_HELP_STRING([--enable-oss], [support the OSS audio API [[default=maybe]]]),
   752                   , enable_oss=maybe)
   753 
   754     # OpenBSD "has" OSS, but it's not really for app use. They want you to
   755     #  use sndio instead. So on there, we default to disabled. You can force
   756     #  it on if you really want, though.
   757     if test x$enable_oss = xmaybe; then
   758         enable_oss=yes
   759         case "$host" in
   760             *-*-openbsd*)
   761                 enable_oss=no;;
   762         esac
   763     fi
   764 
   765     if test x$enable_audio = xyes -a x$enable_oss = xyes; then
   766         AC_MSG_CHECKING(for OSS audio support)
   767         have_oss=no
   768         if test x$have_oss != xyes; then
   769             AC_TRY_COMPILE([
   770               #include <sys/soundcard.h>
   771             ],[
   772               int arg = SNDCTL_DSP_SETFRAGMENT;
   773             ],[
   774             have_oss=yes
   775             ])
   776         fi
   777         if test x$have_oss != xyes; then
   778             AC_TRY_COMPILE([
   779               #include <soundcard.h>
   780             ],[
   781               int arg = SNDCTL_DSP_SETFRAGMENT;
   782             ],[
   783             have_oss=yes
   784             AC_DEFINE(SDL_AUDIO_DRIVER_OSS_SOUNDCARD_H, 1, [ ])
   785             ])
   786         fi
   787         AC_MSG_RESULT($have_oss)
   788         if test x$have_oss = xyes; then
   789             SUMMARY_audio="${SUMMARY_audio} oss"
   790             AC_DEFINE(SDL_AUDIO_DRIVER_OSS, 1, [ ])
   791             SOURCES="$SOURCES $srcdir/src/audio/dsp/*.c"
   792             have_audio=yes
   793 
   794             # We may need to link with ossaudio emulation library
   795             case "$host" in
   796                 *-*-openbsd*|*-*-netbsd*)
   797                     EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lossaudio";;
   798             esac
   799         fi
   800     fi
   801 }
   802 
   803 dnl See if the ALSA audio interface is supported
   804 CheckALSA()
   805 {
   806     AC_ARG_ENABLE(alsa,
   807 AC_HELP_STRING([--enable-alsa], [support the ALSA audio API [[default=yes]]]),
   808                   , enable_alsa=yes)
   809     if test x$enable_audio = xyes -a x$enable_alsa = xyes; then
   810         AM_PATH_ALSA(1.0.11, have_alsa=yes, have_alsa=no)
   811         # Restore all flags from before the ALSA detection runs
   812         CFLAGS="$alsa_save_CFLAGS"
   813         LDFLAGS="$alsa_save_LDFLAGS"
   814         LIBS="$alsa_save_LIBS"
   815         if test x$have_alsa = xyes; then
   816             AC_ARG_ENABLE(alsa-shared,
   817 AC_HELP_STRING([--enable-alsa-shared], [dynamically load ALSA audio support [[default=yes]]]),
   818                           , enable_alsa_shared=yes)
   819             alsa_lib=[`find_lib "libasound.so.*" "$ALSA_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
   820 
   821             AC_DEFINE(SDL_AUDIO_DRIVER_ALSA, 1, [ ])
   822             SOURCES="$SOURCES $srcdir/src/audio/alsa/*.c"
   823             EXTRA_CFLAGS="$EXTRA_CFLAGS $ALSA_CFLAGS"
   824             if test x$have_loadso != xyes && \
   825                test x$enable_alsa_shared = xyes; then
   826                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic ALSA loading])
   827             fi
   828             if test x$have_loadso = xyes && \
   829                test x$enable_alsa_shared = xyes && test x$alsa_lib != x; then
   830                 echo "-- dynamic libasound -> $alsa_lib"
   831                 AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_ALSA_DYNAMIC, "$alsa_lib", [ ])
   832                 SUMMARY_audio="${SUMMARY_audio} alsa(dynamic)"
   833             else
   834                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $ALSA_LIBS"
   835                 SUMMARY_audio="${SUMMARY_audio} alsa"
   836             fi
   837             have_audio=yes
   838         fi
   839     fi
   840 }
   841 
   842 dnl Find JACK Audio
   843 CheckJACK()
   844 {
   845     AC_ARG_ENABLE(jack,
   846 AC_HELP_STRING([--enable-jack], [use JACK audio [[default=yes]]]),
   847                   , enable_jack=yes)
   848     if test x$enable_audio = xyes -a x$enable_jack = xyes; then
   849         audio_jack=no
   850 
   851         JACK_REQUIRED_VERSION=0.125
   852 
   853         AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
   854         AC_MSG_CHECKING(for JACK $JACK_REQUIRED_VERSION support)
   855         if test x$PKG_CONFIG != xno; then
   856         if $PKG_CONFIG --atleast-pkgconfig-version 0.7 && $PKG_CONFIG --atleast-version $JACK_REQUIRED_VERSION jack; then
   857                 JACK_CFLAGS=`$PKG_CONFIG --cflags jack`
   858                 JACK_LIBS=`$PKG_CONFIG --libs jack`
   859                 audio_jack=yes
   860             fi
   861         fi
   862         AC_MSG_RESULT($audio_jack)
   863 
   864         if test x$audio_jack = xyes; then
   865             AC_ARG_ENABLE(jack-shared,
   866 AC_HELP_STRING([--enable-jack-shared], [dynamically load JACK audio support [[default=yes]]]),
   867                           , enable_jack_shared=yes)
   868             jack_lib=[`find_lib "libjack.so.*" "$JACK_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
   869 
   870             AC_DEFINE(SDL_AUDIO_DRIVER_JACK, 1, [ ])
   871             SOURCES="$SOURCES $srcdir/src/audio/jack/*.c"
   872             EXTRA_CFLAGS="$EXTRA_CFLAGS $JACK_CFLAGS"
   873             if test x$have_loadso != xyes && \
   874                test x$enable_jack_shared = xyes; then
   875                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic JACK audio loading])
   876             fi
   877             if test x$have_loadso = xyes && \
   878                test x$enable_jack_shared = xyes && test x$jack_lib != x; then
   879                 echo "-- dynamic libjack -> $jack_lib"
   880                 AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_JACK_DYNAMIC, "$jack_lib", [ ])
   881                 SUMMARY_audio="${SUMMARY_audio} jack(dynamic)"
   882 
   883                 case "$host" in
   884                     # On Solaris, jack must be linked deferred explicitly
   885                     # to prevent undefined symbol failures.
   886                     *-*-solaris*)
   887                         JACK_LIBS=`echo $JACK_LIBS | sed 's/\-l/-Wl,-l/g'`
   888                         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-zdeferred $JACK_LIBS -Wl,-znodeferred"
   889                 esac
   890             else
   891                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $JACK_LIBS"
   892                 SUMMARY_audio="${SUMMARY_audio} jack"
   893             fi
   894             have_audio=yes
   895         fi
   896     fi
   897 }
   898 
   899 dnl Find the ESD includes and libraries
   900 CheckESD()
   901 {
   902     AC_ARG_ENABLE(esd,
   903 AC_HELP_STRING([--enable-esd], [support the Enlightened Sound Daemon [[default=yes]]]),
   904                   , enable_esd=yes)
   905     if test x$enable_audio = xyes -a x$enable_esd = xyes; then
   906         AM_PATH_ESD(0.2.8, have_esd=yes, have_esd=no)
   907         if test x$have_esd = xyes; then
   908             AC_ARG_ENABLE(esd-shared,
   909 AC_HELP_STRING([--enable-esd-shared], [dynamically load ESD audio support [[default=yes]]]),
   910                           , enable_esd_shared=yes)
   911             esd_lib=[`find_lib "libesd.so.*" "$ESD_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
   912 
   913             AC_DEFINE(SDL_AUDIO_DRIVER_ESD, 1, [ ])
   914             SOURCES="$SOURCES $srcdir/src/audio/esd/*.c"
   915             EXTRA_CFLAGS="$EXTRA_CFLAGS $ESD_CFLAGS"
   916             if test x$have_loadso != xyes && \
   917                test x$enable_esd_shared = xyes; then
   918                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic ESD loading])
   919             fi
   920             if test x$have_loadso = xyes && \
   921                test x$enable_esd_shared = xyes && test x$esd_lib != x; then
   922                 echo "-- dynamic libesd -> $esd_lib"
   923                 AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_ESD_DYNAMIC, "$esd_lib", [ ])
   924                 SUMMARY_audio="${SUMMARY_audio} esd(dynamic)"
   925             else
   926                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $ESD_LIBS"
   927                 SUMMARY_audio="${SUMMARY_audio} esd"
   928             fi
   929             have_audio=yes
   930         fi
   931     fi
   932 }
   933 
   934 dnl Find PulseAudio
   935 CheckPulseAudio()
   936 {
   937     AC_ARG_ENABLE(pulseaudio,
   938 AC_HELP_STRING([--enable-pulseaudio], [use PulseAudio [[default=yes]]]),
   939                   , enable_pulseaudio=yes)
   940     if test x$enable_audio = xyes -a x$enable_pulseaudio = xyes; then
   941         audio_pulseaudio=no
   942 
   943         PULSEAUDIO_REQUIRED_VERSION=0.9
   944 
   945         AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
   946         AC_MSG_CHECKING(for PulseAudio $PULSEAUDIO_REQUIRED_VERSION support)
   947         if test x$PKG_CONFIG != xno; then
   948         if $PKG_CONFIG --atleast-pkgconfig-version 0.7 && $PKG_CONFIG --atleast-version $PULSEAUDIO_REQUIRED_VERSION libpulse-simple; then
   949                 PULSEAUDIO_CFLAGS=`$PKG_CONFIG --cflags libpulse-simple`
   950                 PULSEAUDIO_LIBS=`$PKG_CONFIG --libs libpulse-simple`
   951                 audio_pulseaudio=yes
   952             fi
   953         fi
   954         AC_MSG_RESULT($audio_pulseaudio)
   955 
   956         if test x$audio_pulseaudio = xyes; then
   957             AC_ARG_ENABLE(pulseaudio-shared,
   958 AC_HELP_STRING([--enable-pulseaudio-shared], [dynamically load PulseAudio support [[default=yes]]]),
   959                           , enable_pulseaudio_shared=yes)
   960             pulseaudio_lib=[`find_lib "libpulse-simple.so.*" "$PULSEAUDIO_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
   961 
   962             AC_DEFINE(SDL_AUDIO_DRIVER_PULSEAUDIO, 1, [ ])
   963             SOURCES="$SOURCES $srcdir/src/audio/pulseaudio/*.c"
   964             EXTRA_CFLAGS="$EXTRA_CFLAGS $PULSEAUDIO_CFLAGS"
   965             if test x$have_loadso != xyes && \
   966                test x$enable_pulseaudio_shared = xyes; then
   967                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic PulseAudio loading])
   968             fi
   969             if test x$have_loadso = xyes && \
   970                test x$enable_pulseaudio_shared = xyes && test x$pulseaudio_lib != x; then
   971                 echo "-- dynamic libpulse-simple -> $pulseaudio_lib"
   972                 AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_PULSEAUDIO_DYNAMIC, "$pulseaudio_lib", [ ])
   973                 SUMMARY_audio="${SUMMARY_audio} pulse(dynamic)"
   974 
   975                 case "$host" in
   976                     # On Solaris, pulseaudio must be linked deferred explicitly
   977                     # to prevent undefined symbol failures.
   978                     *-*-solaris*)
   979                         PULSEAUDIO_LIBS=`echo $PULSEAUDIO_LIBS | sed 's/\-l/-Wl,-l/g'`
   980                         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-zdeferred $PULSEAUDIO_LIBS -Wl,-znodeferred"
   981                 esac
   982             else
   983                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $PULSEAUDIO_LIBS"
   984                 SUMMARY_audio="${SUMMARY_audio} pulse"
   985             fi
   986             have_audio=yes
   987         fi
   988     fi
   989 }
   990 
   991 CheckARTSC()
   992 {
   993     AC_ARG_ENABLE(arts,
   994 AC_HELP_STRING([--enable-arts], [support the Analog Real Time Synthesizer [[default=yes]]]),
   995                   , enable_arts=yes)
   996     if test x$enable_audio = xyes -a x$enable_arts = xyes; then
   997         AC_PATH_PROG(ARTSCONFIG, artsc-config)
   998         if test x$ARTSCONFIG = x -o x$ARTSCONFIG = x'"$ARTSCONFIG"'; then
   999             : # arts isn't installed
  1000         else
  1001             ARTS_CFLAGS=`$ARTSCONFIG --cflags`
  1002             ARTS_LIBS=`$ARTSCONFIG --libs`
  1003             AC_MSG_CHECKING(for aRts development environment)
  1004             audio_arts=no
  1005             save_CFLAGS="$CFLAGS"
  1006             CFLAGS="$CFLAGS $ARTS_CFLAGS"
  1007             AC_TRY_COMPILE([
  1008              #include <artsc.h>
  1009             ],[
  1010              arts_stream_t stream;
  1011             ],[
  1012             audio_arts=yes
  1013             ])
  1014             CFLAGS="$save_CFLAGS"
  1015             AC_MSG_RESULT($audio_arts)
  1016             if test x$audio_arts = xyes; then
  1017                 AC_ARG_ENABLE(arts-shared,
  1018 AC_HELP_STRING([--enable-arts-shared], [dynamically load aRts audio support [[default=yes]]]),
  1019                               , enable_arts_shared=yes)
  1020                 arts_lib=[`find_lib "libartsc.so.*" "$ARTS_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1021 
  1022                 AC_DEFINE(SDL_AUDIO_DRIVER_ARTS, 1, [ ])
  1023                 SOURCES="$SOURCES $srcdir/src/audio/arts/*.c"
  1024                 EXTRA_CFLAGS="$EXTRA_CFLAGS $ARTS_CFLAGS"
  1025                 if test x$have_loadso != xyes && \
  1026                    test x$enable_arts_shared = xyes; then
  1027                     AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic ARTS loading])
  1028                 fi
  1029                 if test x$have_loadso = xyes && \
  1030                    test x$enable_arts_shared = xyes && test x$arts_lib != x; then
  1031                     echo "-- dynamic libartsc -> $arts_lib"
  1032                     AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_ARTS_DYNAMIC, "$arts_lib", [ ])
  1033                     SUMMARY_audio="${SUMMARY_audio} arts(dynamic)"
  1034                 else
  1035                     EXTRA_LDFLAGS="$EXTRA_LDFLAGS $ARTS_LIBS"
  1036                     SUMMARY_audio="${SUMMARY_audio} arts"
  1037                 fi
  1038                 have_audio=yes
  1039             fi
  1040         fi
  1041     fi
  1042 }
  1043 
  1044 dnl See if the NAS audio interface is supported
  1045 CheckNAS()
  1046 {
  1047     AC_ARG_ENABLE(nas,
  1048 AC_HELP_STRING([--enable-nas], [support the NAS audio API [[default=yes]]]),
  1049                   , enable_nas=yes)
  1050     if test x$enable_audio = xyes -a x$enable_nas = xyes; then
  1051         AC_CHECK_HEADER(audio/audiolib.h, have_nas_hdr=yes)
  1052         AC_CHECK_LIB(audio, AuOpenServer, have_nas_lib=yes)
  1053 
  1054         AC_MSG_CHECKING(for NAS audio support)
  1055         have_nas=no
  1056 
  1057         if test x$have_nas_hdr = xyes -a x$have_nas_lib = xyes; then
  1058             have_nas=yes
  1059             NAS_LIBS="-laudio"
  1060 
  1061         elif test -r /usr/X11R6/include/audio/audiolib.h; then
  1062             have_nas=yes
  1063             NAS_CFLAGS="-I/usr/X11R6/include/"
  1064             NAS_LIBS="-L/usr/X11R6/lib -laudio -lXt"
  1065 
  1066         fi
  1067 
  1068         AC_MSG_RESULT($have_nas)
  1069 
  1070         if test x$have_nas = xyes; then
  1071             AC_ARG_ENABLE(nas-shared,
  1072 AC_HELP_STRING([--enable-nas-shared], [dynamically load NAS audio support [[default=yes]]]),
  1073                           , enable_nas_shared=yes)
  1074             nas_lib=[`find_lib "libaudio.so.*" "$NAS_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1075 
  1076             if test x$have_loadso != xyes && \
  1077                test x$enable_nas_shared = xyes; then
  1078                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic NAS loading])
  1079             fi
  1080             if test x$have_loadso = xyes && \
  1081                test x$enable_nas_shared = xyes && test x$nas_lib != x; then
  1082                 echo "-- dynamic libaudio -> $nas_lib"
  1083                 AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_NAS_DYNAMIC, "$nas_lib", [ ])
  1084                 SUMMARY_audio="${SUMMARY_audio} nas(dynamic)"
  1085             else
  1086                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $NAS_LIBS"
  1087                 SUMMARY_audio="${SUMMARY_audio} nas"
  1088             fi
  1089 
  1090             AC_DEFINE(SDL_AUDIO_DRIVER_NAS, 1, [ ])
  1091             SOURCES="$SOURCES $srcdir/src/audio/nas/*.c"
  1092             EXTRA_CFLAGS="$EXTRA_CFLAGS $NAS_CFLAGS"
  1093             have_audio=yes
  1094         fi
  1095     fi
  1096 }
  1097 
  1098 dnl See if the sndio audio interface is supported
  1099 CheckSNDIO()
  1100 {
  1101     AC_ARG_ENABLE(sndio,
  1102 AC_HELP_STRING([--enable-sndio], [support the sndio audio API [[default=yes]]]),
  1103                   , enable_sndio=yes)
  1104     if test x$enable_audio = xyes -a x$enable_sndio = xyes; then
  1105         AC_CHECK_HEADER(sndio.h, have_sndio_hdr=yes)
  1106         AC_CHECK_LIB(sndio, sio_open, have_sndio_lib=yes)
  1107 
  1108         AC_MSG_CHECKING(for sndio audio support)
  1109         have_sndio=no
  1110 
  1111         if test x$have_sndio_hdr = xyes -a x$have_sndio_lib = xyes; then
  1112             have_sndio=yes
  1113             SNDIO_LIBS="-lsndio"
  1114         fi
  1115 
  1116         AC_MSG_RESULT($have_sndio)
  1117 
  1118         if test x$have_sndio = xyes; then
  1119             AC_ARG_ENABLE(sndio-shared,
  1120 AC_HELP_STRING([--enable-sndio-shared], [dynamically load sndio audio support [[default=yes]]]),
  1121                           , enable_sndio_shared=yes)
  1122             sndio_lib=[`find_lib "libsndio.so.*" "$SNDIO_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1123 
  1124             if test x$have_loadso != xyes && \
  1125                test x$enable_sndio_shared = xyes; then
  1126                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic sndio loading])
  1127             fi
  1128             if test x$have_loadso = xyes && \
  1129                test x$enable_sndio_shared = xyes && test x$sndio_lib != x; then
  1130                 echo "-- dynamic libsndio -> $sndio_lib"
  1131                 AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_SNDIO_DYNAMIC, "$sndio_lib", [ ])
  1132                 SUMMARY_audio="${SUMMARY_audio} sndio(dynamic)"
  1133             else
  1134                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $SNDIO_LIBS"
  1135                 SUMMARY_audio="${SUMMARY_audio} sndio"
  1136             fi
  1137 
  1138             AC_DEFINE(SDL_AUDIO_DRIVER_SNDIO, 1, [ ])
  1139             SOURCES="$SOURCES $srcdir/src/audio/sndio/*.c"
  1140             EXTRA_CFLAGS="$EXTRA_CFLAGS $SNDIO_CFLAGS"
  1141             have_audio=yes
  1142         fi
  1143     fi
  1144 }
  1145 
  1146 dnl Find FusionSound
  1147 CheckFusionSound()
  1148 {
  1149     AC_ARG_ENABLE(fusionsound,
  1150 AC_HELP_STRING([--enable-fusionsound], [use FusionSound audio driver [[default=no]]]),
  1151                   , enable_fusionsound=no)
  1152     if test x$enable_audio = xyes -a x$enable_fusionsound = xyes; then
  1153         fusionsound=no
  1154 
  1155         FUSIONSOUND_REQUIRED_VERSION=1.1.1
  1156 
  1157         AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
  1158         AC_MSG_CHECKING(for FusionSound $FUSIONSOUND_REQUIRED_VERSION support)
  1159         if test x$PKG_CONFIG != xno; then
  1160             if $PKG_CONFIG --atleast-pkgconfig-version 0.7 && $PKG_CONFIG --atleast-version $FUSIONSOUND_REQUIRED_VERSION fusionsound; then
  1161                 FUSIONSOUND_CFLAGS=`$PKG_CONFIG --cflags fusionsound`
  1162                 FUSIONSOUND_LIBS=`$PKG_CONFIG --libs fusionsound`
  1163                 fusionsound=yes
  1164             fi
  1165         fi
  1166         AC_MSG_RESULT($fusionsound)
  1167 
  1168         if test x$fusionsound = xyes; then
  1169             AC_DEFINE(SDL_AUDIO_DRIVER_FUSIONSOUND, 1, [ ])
  1170             SOURCES="$SOURCES $srcdir/src/audio/fusionsound/*.c"
  1171             EXTRA_CFLAGS="$EXTRA_CFLAGS $FUSIONSOUND_CFLAGS"
  1172             
  1173             AC_ARG_ENABLE(fusionsound-shared,
  1174 AC_HELP_STRING([--enable-fusionsound-shared], [dynamically load fusionsound audio support [[default=yes]]]),
  1175                           , enable_fusionsound_shared=yes)
  1176             fusionsound_shared=no
  1177             AC_MSG_CHECKING(for FusionSound dynamic loading support)
  1178             if test x$have_loadso != xyes && \
  1179                test x$enable_fusionsound_shared = xyes; then
  1180                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic fusionsound loading])
  1181             fi
  1182             if test x$have_loadso = xyes && \
  1183                test x$enable_fusionsound_shared = xyes; then
  1184                 AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_FUSIONSOUND_DYNAMIC, "libfusionsound.so", [ ])
  1185                 fusionsound_shared=yes
  1186                 SUMMARY_audio="${SUMMARY_audio} fusionsound(dynamic)"
  1187             else
  1188                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $FUSIONSOUND_LIBS"
  1189                 SUMMARY_audio="${SUMMARY_audio} fusionsound"
  1190             fi
  1191             AC_MSG_RESULT($fusionsound_shared)
  1192             
  1193             have_audio=yes
  1194         fi
  1195     fi
  1196 }
  1197 
  1198 dnl rcg07142001 See if the user wants the disk writer audio driver...
  1199 CheckDiskAudio()
  1200 {
  1201     AC_ARG_ENABLE(diskaudio,
  1202 AC_HELP_STRING([--enable-diskaudio], [support the disk writer audio driver [[default=yes]]]),
  1203                   , enable_diskaudio=yes)
  1204     if test x$enable_audio = xyes -a x$enable_diskaudio = xyes; then
  1205         AC_DEFINE(SDL_AUDIO_DRIVER_DISK, 1, [ ])
  1206         SOURCES="$SOURCES $srcdir/src/audio/disk/*.c"
  1207         SUMMARY_audio="${SUMMARY_audio} disk"
  1208     fi
  1209 }
  1210 
  1211 dnl rcg03142006 See if the user wants the dummy audio driver...
  1212 CheckDummyAudio()
  1213 {
  1214     AC_ARG_ENABLE(dummyaudio,
  1215 AC_HELP_STRING([--enable-dummyaudio], [support the dummy audio driver [[default=yes]]]),
  1216                   , enable_dummyaudio=yes)
  1217     if test x$enable_audio = xyes -a x$enable_dummyaudio = xyes; then
  1218         AC_DEFINE(SDL_AUDIO_DRIVER_DUMMY, 1, [ ])
  1219         SOURCES="$SOURCES $srcdir/src/audio/dummy/*.c"
  1220         SUMMARY_audio="${SUMMARY_audio} dummy"
  1221     fi
  1222 }
  1223 
  1224 dnl See if libsamplerate is available
  1225 CheckLibSampleRate()
  1226 {
  1227     AC_ARG_ENABLE(libsamplerate,
  1228 AC_HELP_STRING([--enable-libsamplerate], [use libsamplerate for audio rate conversion [[default=yes]]]),
  1229                   , enable_libsamplerate=yes)
  1230     if test x$enable_libsamplerate = xyes; then
  1231         AC_CHECK_HEADER(samplerate.h,
  1232                         have_samplerate_h_hdr=yes,
  1233                         have_samplerate_h_hdr=no)
  1234         if test x$have_samplerate_h_hdr = xyes; then
  1235             AC_DEFINE(HAVE_LIBSAMPLERATE_H, 1, [ ])
  1236 
  1237             AC_ARG_ENABLE(libsamplerate-shared,
  1238 AC_HELP_STRING([--enable-libsamplerate-shared], [dynamically load libsamplerate [[default=yes]]]),
  1239                           , enable_libsamplerate_shared=yes)
  1240 
  1241             samplerate_lib=[`find_lib "libsamplerate.so.*" "" | sed 's/.*\/\(.*\)/\1/; q'`]
  1242 
  1243             if test x$have_loadso != xyes && \
  1244                test x$enable_libsamplerate_shared = xyes; then
  1245                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic libsamplerate loading])
  1246             fi
  1247             if test x$have_loadso = xyes && \
  1248                test x$enable_libsamplerate_shared = xyes && test x$samplerate_lib != x; then
  1249                 echo "-- dynamic libsamplerate -> $samplerate_lib"
  1250                 AC_DEFINE_UNQUOTED(SDL_LIBSAMPLERATE_DYNAMIC, "$samplerate_lib", [ ])
  1251             else
  1252                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lsamplerate"
  1253             fi
  1254         fi
  1255     fi
  1256 }
  1257 
  1258 dnl See if GCC's -fvisibility=hidden is supported (gcc4 and later, usually).
  1259 dnl  Details of this flag are here: http://gcc.gnu.org/wiki/Visibility
  1260 CheckVisibilityHidden()
  1261 {
  1262     AC_MSG_CHECKING(for GCC -fvisibility=hidden option)
  1263     have_gcc_fvisibility=no
  1264 
  1265     visibility_CFLAGS="-fvisibility=hidden"
  1266     save_CFLAGS="$CFLAGS"
  1267     CFLAGS="$save_CFLAGS $visibility_CFLAGS -Werror"
  1268     AC_TRY_COMPILE([
  1269     #if !defined(__GNUC__) || __GNUC__ < 4
  1270     #error SDL only uses visibility attributes in GCC 4 or newer
  1271     #endif
  1272     ],[
  1273     ],[
  1274     have_gcc_fvisibility=yes
  1275     ])
  1276     AC_MSG_RESULT($have_gcc_fvisibility)
  1277     CFLAGS="$save_CFLAGS"
  1278 
  1279     if test x$have_gcc_fvisibility = xyes; then
  1280         EXTRA_CFLAGS="$EXTRA_CFLAGS $visibility_CFLAGS"
  1281     fi
  1282 }
  1283 
  1284 dnl See if GCC's -mpreferred-stack-boundary is supported.
  1285 dnl  Reference: http://bugzilla.libsdl.org/show_bug.cgi?id=1296
  1286 CheckStackBoundary()
  1287 {
  1288     AC_MSG_CHECKING(for GCC -mpreferred-stack-boundary option)
  1289     have_gcc_preferred_stack_boundary=no
  1290 
  1291     save_CFLAGS="$CFLAGS"
  1292     CFLAGS="$save_CFLAGS -mpreferred-stack-boundary=2"
  1293     AC_TRY_COMPILE([
  1294     int x = 0;
  1295     ],[
  1296     ],[
  1297     have_gcc_preferred_stack_boundary=yes
  1298     ])
  1299     AC_MSG_RESULT($have_gcc_preferred_stack_boundary)
  1300     CFLAGS="$save_CFLAGS"
  1301 
  1302     if test x$have_gcc_preferred_stack_boundary = xyes; then
  1303         EXTRA_CFLAGS="$EXTRA_CFLAGS -mpreferred-stack-boundary=2"
  1304     fi
  1305 }
  1306 
  1307 dnl See if GCC's -Wdeclaration-after-statement is supported.
  1308 dnl  This lets us catch things that would fail on a C89 compiler when using
  1309 dnl  a modern GCC.
  1310 CheckDeclarationAfterStatement()
  1311 {
  1312     AC_MSG_CHECKING(for GCC -Wdeclaration-after-statement option)
  1313     have_gcc_declaration_after_statement=no
  1314 
  1315     save_CFLAGS="$CFLAGS"
  1316     CFLAGS="$save_CFLAGS -Wdeclaration-after-statement -Werror=declaration-after-statement"
  1317     AC_TRY_COMPILE([
  1318     int x = 0;
  1319     ],[
  1320     ],[
  1321     have_gcc_declaration_after_statement=yes
  1322     ])
  1323     AC_MSG_RESULT($have_gcc_declaration_after_statement)
  1324     CFLAGS="$save_CFLAGS"
  1325 
  1326     if test x$have_gcc_declaration_after_statement = xyes; then
  1327         EXTRA_CFLAGS="$EXTRA_CFLAGS -Wdeclaration-after-statement -Werror=declaration-after-statement"
  1328     fi
  1329 }
  1330 
  1331 dnl See if GCC's -Wall is supported.
  1332 CheckWarnAll()
  1333 {
  1334     AC_MSG_CHECKING(for GCC -Wall option)
  1335     have_gcc_Wall=no
  1336 
  1337     save_CFLAGS="$CFLAGS"
  1338     CFLAGS="$save_CFLAGS -Wall"
  1339     AC_TRY_COMPILE([
  1340     int x = 0;
  1341     ],[
  1342     ],[
  1343     have_gcc_Wall=yes
  1344     ])
  1345     AC_MSG_RESULT($have_gcc_Wall)
  1346     CFLAGS="$save_CFLAGS"
  1347 
  1348     if test x$have_gcc_Wall = xyes; then
  1349         EXTRA_CFLAGS="$EXTRA_CFLAGS -Wall"
  1350 
  1351         dnl Haiku headers use multicharacter constants all over the place. Ignore these warnings when using -Wall.
  1352         AC_MSG_CHECKING(for necessary GCC -Wno-multichar option)
  1353         need_gcc_Wno_multichar=no
  1354         case "$host" in
  1355             *-*-haiku*)
  1356                 need_gcc_Wno_multichar=yes
  1357                 ;;
  1358         esac
  1359         AC_MSG_RESULT($need_gcc_Wno_multichar)
  1360         if test x$need_gcc_Wno_multichar = xyes; then
  1361             EXTRA_CFLAGS="$EXTRA_CFLAGS -Wno-multichar"
  1362         fi
  1363     fi
  1364 }
  1365 
  1366 dnl Check for Wayland
  1367 CheckWayland()
  1368 {
  1369     AC_ARG_ENABLE(video-wayland,
  1370 AC_HELP_STRING([--enable-video-wayland], [use Wayland video driver [[default=yes]]]),
  1371                   ,enable_video_wayland=yes)
  1372 
  1373     AC_ARG_ENABLE(video-wayland-qt-touch,
  1374 AC_HELP_STRING([--enable-video-wayland-qt-touch], [QtWayland server support for Wayland video driver [[default=yes]]]),
  1375                   ,enable_video_wayland_qt_touch=yes)
  1376 
  1377     if test x$enable_video = xyes -a x$enable_video_wayland = xyes; then
  1378         AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
  1379         AC_MSG_CHECKING(for Wayland support)
  1380         video_wayland=no
  1381         if  test x$PKG_CONFIG != xno && \
  1382             test x$video_opengl_egl = xyes && \
  1383             test x$video_opengles_v2 = xyes; then
  1384             if $PKG_CONFIG --exists wayland-client wayland-scanner wayland-protocols wayland-egl wayland-cursor egl xkbcommon ; then
  1385                 WAYLAND_CFLAGS=`$PKG_CONFIG --cflags wayland-client wayland-egl wayland-cursor xkbcommon`
  1386                 WAYLAND_LIBS=`$PKG_CONFIG --libs wayland-client wayland-egl wayland-cursor xkbcommon`
  1387                 WAYLAND_SCANNER=`$PKG_CONFIG --variable=wayland_scanner wayland-scanner`
  1388                 WAYLAND_CORE_PROTOCOL_DIR=`$PKG_CONFIG --variable=pkgdatadir wayland-client`
  1389                 WAYLAND_PROTOCOLS_DIR=`$PKG_CONFIG --variable=pkgdatadir wayland-protocols`
  1390                 video_wayland=yes
  1391             fi
  1392         fi
  1393         AC_MSG_RESULT($video_wayland)
  1394 
  1395         if test x$video_wayland = xyes; then
  1396             AC_DEFINE(SDL_VIDEO_DRIVER_WAYLAND, 1, [ ])
  1397             if test x$enable_video_wayland_qt_touch = xyes; then
  1398                 AC_DEFINE(SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH, 1, [ ])
  1399             fi
  1400 
  1401             WAYLAND_PROTOCOLS_UNSTABLE="relative-pointer-unstable-v1 pointer-constraints-unstable-v1"
  1402 
  1403             SOURCES="$SOURCES $srcdir/src/video/wayland/*.c"
  1404             EXTRA_CFLAGS="$EXTRA_CFLAGS $WAYLAND_CFLAGS -I\$(gen)"
  1405             AC_ARG_ENABLE(wayland-shared,
  1406 AC_HELP_STRING([--enable-wayland-shared], [dynamically load Wayland support [[default=maybe]]]),
  1407                           , enable_wayland_shared=maybe)
  1408 
  1409             dnl FIXME: Do BSD and OS X need special cases?
  1410             case "$host" in
  1411                 *)
  1412                     wayland_client_lib=[`find_lib "libwayland-client.so.*" "$WAYLAND_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1413                     wayland_egl_lib=[`find_lib "libwayland-egl.so.*" "$WAYLAND_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1414                     if test x$wayland_egl_lib = x; then
  1415                         dnl This works in Ubuntu 13.10, maybe others
  1416                         wayland_egl_lib=[`find_lib "mesa-egl/libwayland-egl.so.*" "$WAYLAND_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1417                     fi
  1418                     wayland_cursor_lib=[`find_lib "libwayland-cursor.so.*" "$WAYLAND_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1419                     xkbcommon_lib=[`find_lib "libxkbcommon.so.*" "$WAYLAND_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1420                     ;;
  1421             esac
  1422 
  1423             if test x$enable_wayland_shared = xmaybe; then
  1424                 enable_wayland_shared=yes
  1425             fi
  1426             if test x$have_loadso != xyes && \
  1427                test x$enable_wayland_shared = xyes; then
  1428                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic Wayland loading])
  1429                 enable_wayland_shared=no
  1430             fi
  1431             if test x$have_loadso = xyes && \
  1432                test x$enable_wayland_shared = xyes && \
  1433                test x$wayland_client_lib != x && \
  1434                test x$wayland_egl_lib != x && \
  1435                test x$wayland_cursor_lib != x && \
  1436                test x$xkbcommon_lib != x; then
  1437                 echo "-- dynamic libwayland-client -> $wayland_client_lib"
  1438                 echo "-- dynamic libwayland-egl -> $wayland_egl_lib"
  1439                 echo "-- dynamic libwayland-cursor -> $wayland_cursor_lib"
  1440                 echo "-- dynamic libxkbcommon -> $xkbcommon_lib"
  1441                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC, "$wayland_client_lib", [ ])
  1442                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_EGL, "$wayland_egl_lib", [ ])
  1443                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_CURSOR, "$wayland_cursor_lib", [ ])
  1444                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_XKBCOMMON, "$xkbcommon_lib", [ ])
  1445                 SUMMARY_video="${SUMMARY_video} wayland(dynamic)"
  1446             else
  1447                 enable_wayland_shared=no
  1448                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $WAYLAND_LIBS"
  1449                 SUMMARY_video="${SUMMARY_video} wayland"
  1450             fi
  1451             have_video=yes
  1452         fi
  1453     fi
  1454 }
  1455 
  1456 dnl Check for Mir
  1457 CheckMir()
  1458 {
  1459     AC_ARG_ENABLE(video-mir,
  1460 AC_HELP_STRING([--enable-video-mir], [use Mir video driver [[default=yes]]]),
  1461                   ,enable_video_mir=yes)
  1462 
  1463     if test x$enable_video = xyes -a x$enable_video_mir = xyes; then
  1464         AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
  1465         AC_MSG_CHECKING(for Mir support)
  1466         video_mir=no
  1467         if test x$PKG_CONFIG != xno; then
  1468             if $PKG_CONFIG --exists mirclient egl xkbcommon ; then
  1469                 MIR_CFLAGS=`$PKG_CONFIG --cflags mirclient egl xkbcommon`
  1470                 MIR_LIBS=`$PKG_CONFIG --libs mirclient egl xkbcommon`
  1471                 save_CFLAGS="$CFLAGS"
  1472                 CFLAGS="$save_CFLAGS $MIR_CFLAGS"
  1473 
  1474                 dnl This will disable Mir if >= v0.26 is not available
  1475                 AC_TRY_COMPILE([
  1476                 #include <mir_toolkit/mir_client_library.h>
  1477                 ],[
  1478                     MirWindowAttrib attrib = mir_window_attrib_state
  1479                 ],[
  1480                 video_mir=yes
  1481                 ])
  1482                 CFLAGS="$save_CFLAGS"
  1483             fi
  1484         fi
  1485         AC_MSG_RESULT($video_mir)
  1486 
  1487         if test x$video_mir = xyes; then
  1488             AC_DEFINE(SDL_VIDEO_DRIVER_MIR, 1, [ ])
  1489             SOURCES="$SOURCES $srcdir/src/video/mir/*.c"
  1490             EXTRA_CFLAGS="$EXTRA_CFLAGS $MIR_CFLAGS"
  1491             AC_ARG_ENABLE(mir-shared,
  1492 AC_HELP_STRING([--enable-mir-shared], [dynamically load Mir support [[default=maybe]]]),
  1493                           , enable_mir_shared=maybe)
  1494 
  1495             dnl FIXME: Do BSD and OS X need special cases?
  1496             case "$host" in
  1497                 *)
  1498                     mirclient_lib=[`find_lib "libmirclient.so.*" "$MIR_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1499                     xkbcommon_lib=[`find_lib "libxkbcommon.so.*" "$MIR_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
  1500                     ;;
  1501             esac
  1502 
  1503             if test x$enable_mir_shared = xmaybe; then
  1504                 enable_mir_shared=yes
  1505             fi
  1506             if test x$have_loadso != xyes && \
  1507                test x$enable_mir_shared = xyes; then
  1508                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic Mir loading])
  1509                 enable_mir_shared=no
  1510             fi
  1511             if test x$have_loadso = xyes && \
  1512                test x$enable_mir_shared = xyes && \
  1513                test x$mirclient_lib != x && \
  1514                test x$xkbcommon_lib != x; then
  1515                 echo "-- dynamic libmirclient -> $mirclient_lib"
  1516                 echo "-- dynamic libxkbcommon -> $xkbcommon_lib"
  1517                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_MIR_DYNAMIC, "$mirclient_lib", [ ])
  1518                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_MIR_DYNAMIC_XKBCOMMON, "$xkbcommon_lib", [ ])
  1519                 SUMMARY_video="${SUMMARY_video} mir(dynamic)"
  1520             else
  1521                 enable_mir_shared=no
  1522                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $MIR_LIBS"
  1523                 SUMMARY_video="${SUMMARY_video} mir"
  1524             fi
  1525             have_video=yes
  1526         fi
  1527     fi
  1528 }
  1529 
  1530 dnl Check for Native Client stuff
  1531 CheckNativeClient()
  1532 {
  1533         AC_TRY_COMPILE([
  1534           #if !defined(__native_client__)
  1535           #error "NO NACL"
  1536           #endif
  1537         ],[
  1538         ],[
  1539         AC_DEFINE(SDL_VIDEO_DRIVER_NACL, 1, [ ])
  1540         AC_DEFINE(SDL_AUDIO_DRIVER_NACL, 1, [ ])
  1541         AC_DEFINE(HAVE_POW, 1, [ ])
  1542         AC_DEFINE(HAVE_OPENGLES2, 1, [ ])
  1543         AC_DEFINE(SDL_VIDEO_OPENGL_ES2, 1, [ ])
  1544         AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES2, 1, [ ])
  1545 
  1546         SDL_LIBS="-lppapi_simple -lppapi_gles2 $SDL_LIBS"
  1547 
  1548         SDLMAIN_SOURCES="$srcdir/src/main/nacl/*.c"
  1549         SOURCES="$SOURCES $srcdir/src/audio/nacl/*.c"
  1550         SUMMARY_audio="${SUMMARY_audio} nacl"
  1551         SOURCES="$SOURCES $srcdir/src/video/nacl/*.c"
  1552         SUMMARY_video="${SUMMARY_video} nacl opengles2"
  1553         ])
  1554 }
  1555 
  1556 
  1557 dnl Find the X11 include and library directories
  1558 CheckX11()
  1559 {
  1560 
  1561 
  1562     AC_ARG_ENABLE(video-x11,
  1563 AC_HELP_STRING([--enable-video-x11], [use X11 video driver [[default=yes]]]),
  1564                   , enable_video_x11=yes)
  1565     if test x$enable_video = xyes -a x$enable_video_x11 = xyes; then
  1566         case "$host" in
  1567             *-*-darwin*)
  1568                 # This isn't necessary for X11, but fixes GLX detection
  1569                 if test "x$x_includes" = xNONE && \
  1570                    test "x$x_libraries" = xNONE && \
  1571                    test -d /usr/X11R6/include && \
  1572                    test -d /usr/X11R6/lib; then
  1573                     x_includes="/usr/X11R6/include"
  1574                     x_libraries="/usr/X11R6/lib"
  1575                 fi
  1576                 ;;
  1577         esac
  1578         AC_PATH_X
  1579         AC_PATH_XTRA
  1580         if test x$have_x = xyes; then
  1581             AC_ARG_ENABLE(x11-shared,
  1582 AC_HELP_STRING([--enable-x11-shared], [dynamically load X11 support [[default=maybe]]]),
  1583                           , enable_x11_shared=maybe)
  1584 
  1585             case "$host" in
  1586                 *-*-darwin*)
  1587                     x11_lib='/usr/X11R6/lib/libX11.6.dylib'
  1588                     x11ext_lib='/usr/X11R6/lib/libXext.6.dylib'
  1589                     xcursor_lib='/usr/X11R6/lib/libXcursor.1.dylib'
  1590                     xinerama_lib='/usr/X11R6/lib/libXinerama.1.dylib'
  1591                     xinput_lib='/usr/X11R6/lib/libXi.6.dylib'
  1592                     xrandr_lib='/usr/X11R6/lib/libXrandr.2.dylib'
  1593                     xrender_lib='/usr/X11R6/lib/libXrender.1.dylib'
  1594                     xss_lib='/usr/X11R6/lib/libXss.1.dylib'
  1595                     xvidmode_lib='/usr/X11R6/lib/libXxf86vm.1.dylib'
  1596                     ;;
  1597                 *-*-openbsd*)
  1598                     x11_lib='libX11.so'
  1599                     x11ext_lib='libXext.so'
  1600                     xcursor_lib='libXcursor.so'
  1601                     xinerama_lib='libXinerama.so'
  1602                     xinput_lib='libXi.so'
  1603                     xrandr_lib='libXrandr.so'
  1604                     xrender_lib='libXrender.so'
  1605                     xss_lib='libXss.so'
  1606                     xvidmode_lib='libXxf86vm.so'
  1607                     ;;
  1608                 *)
  1609                     x11_lib=[`find_lib "libX11.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1610                     x11ext_lib=[`find_lib "libXext.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1611                     xcursor_lib=[`find_lib "libXcursor.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1612                     xinerama_lib=[`find_lib "libXinerama.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1613                     xinput_lib=[`find_lib "libXi.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1614                     xrandr_lib=[`find_lib "libXrandr.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1615                     xrender_lib=[`find_lib "libXrender.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1616                     xss_lib=[`find_lib "libXss.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1617                     xvidmode_lib=[`find_lib "libXxf86vm.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
  1618                     ;;
  1619             esac
  1620 
  1621             if test x$ac_cv_func_shmat != xyes; then
  1622                 X_CFLAGS="$X_CFLAGS -DNO_SHARED_MEMORY"
  1623             fi
  1624             CFLAGS="$CFLAGS $X_CFLAGS"
  1625             LDFLAGS="$LDFLAGS $X_LIBS"
  1626 
  1627             AC_CHECK_HEADER(X11/extensions/Xext.h,
  1628                             have_xext_h_hdr=yes,
  1629                             have_xext_h_hdr=no,
  1630                             [#include <X11/Xlib.h>
  1631                              #include <X11/Xproto.h>
  1632                             ])
  1633             if test x$have_xext_h_hdr != xyes; then
  1634                AC_MSG_ERROR([
  1635 *** Missing Xext.h, maybe you need to install the libxext-dev package?
  1636                ])
  1637             fi
  1638 
  1639             AC_DEFINE(SDL_VIDEO_DRIVER_X11, 1, [ ])
  1640             SOURCES="$SOURCES $srcdir/src/video/x11/*.c"
  1641             EXTRA_CFLAGS="$EXTRA_CFLAGS $X_CFLAGS"
  1642 
  1643             # Needed so SDL applications can include SDL_syswm.h
  1644             SDL_CFLAGS="$SDL_CFLAGS $X_CFLAGS"
  1645 
  1646             if test x$enable_x11_shared = xmaybe; then
  1647                 enable_x11_shared=yes
  1648             fi
  1649             if test x$have_loadso != xyes && \
  1650                test x$enable_x11_shared = xyes; then
  1651                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic X11 loading])
  1652                 enable_x11_shared=no
  1653             fi
  1654             if test x$have_loadso = xyes && \
  1655                test x$enable_x11_shared = xyes && test x$x11_lib != x && test x$x11ext_lib != x; then
  1656                 echo "-- dynamic libX11 -> $x11_lib"
  1657                 echo "-- dynamic libX11ext -> $x11ext_lib"
  1658                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC, "$x11_lib", [ ])
  1659                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT, "$x11ext_lib", [ ])
  1660                 SUMMARY_video="${SUMMARY_video} x11(dynamic)"
  1661             else
  1662                 enable_x11_shared=no
  1663                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $X_LIBS -lX11 -lXext"
  1664                 SUMMARY_video="${SUMMARY_video} x11"
  1665             fi
  1666             have_video=yes
  1667 
  1668             AC_MSG_CHECKING(for const parameter to XextAddDisplay)
  1669             have_const_param_XextAddDisplay=no
  1670             AC_TRY_COMPILE([
  1671               #include <X11/Xlib.h>
  1672               #include <X11/Xproto.h>
  1673               #include <X11/extensions/Xext.h>
  1674               #include <X11/extensions/extutil.h>
  1675               extern XExtDisplayInfo* XextAddDisplay(XExtensionInfo* a,Display* b,_Xconst char* c,XExtensionHooks* d,int e,XPointer f);
  1676             ],[
  1677             ],[
  1678             have_const_param_XextAddDisplay=yes
  1679             AC_DEFINE([SDL_VIDEO_DRIVER_X11_CONST_PARAM_XEXTADDDISPLAY], 1, [ ])
  1680             ])
  1681             AC_MSG_RESULT($have_const_param_XextAddDisplay)
  1682 
  1683             dnl AC_CHECK_LIB(X11, XGetEventData, AC_DEFINE(SDL_VIDEO_DRIVER_X11_SUPPORTS_GENERIC_EVENTS, 1, [Have XGenericEvent]))
  1684             AC_MSG_CHECKING([for XGenericEvent])
  1685             have_XGenericEvent=no
  1686             AC_TRY_COMPILE([
  1687               	#include <X11/Xlib.h>
  1688             ],[
  1689 Display *display;
  1690 XEvent event;
  1691 XGenericEventCookie *cookie = &event.xcookie;
  1692 XNextEvent(display, &event);
  1693 XGetEventData(display, cookie);
  1694 XFreeEventData(display, cookie);
  1695             ],[
  1696                 have_XGenericEvent=yes
  1697                 AC_DEFINE([SDL_VIDEO_DRIVER_X11_SUPPORTS_GENERIC_EVENTS], 1, [ ])
  1698             ])
  1699             AC_MSG_RESULT($have_XGenericEvent)
  1700 
  1701             AC_CHECK_LIB(X11, XkbKeycodeToKeysym, AC_DEFINE(SDL_VIDEO_DRIVER_X11_HAS_XKBKEYCODETOKEYSYM, 1, [Have XkbKeycodeToKeysym]))
  1702 
  1703             AC_ARG_ENABLE(video-x11-xcursor,
  1704 AC_HELP_STRING([--enable-video-x11-xcursor], [enable X11 Xcursor support [[default=yes]]]),
  1705                             , enable_video_x11_xcursor=yes)
  1706             if test x$enable_video_x11_xcursor = xyes; then
  1707                 definitely_enable_video_x11_xcursor=no
  1708                 AC_CHECK_HEADER(X11/Xcursor/Xcursor.h,
  1709                                 have_xcursor_h_hdr=yes,
  1710                                 have_xcursor_h_hdr=no,
  1711                                 [#include <X11/Xlib.h>
  1712                                 ])
  1713                 if test x$have_xcursor_h_hdr = xyes; then
  1714                     if test x$enable_x11_shared = xyes && test x$xcursor_lib != x ; then
  1715                         echo "-- dynamic libXcursor -> $xcursor_lib"
  1716                         AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XCURSOR, "$xcursor_lib", [ ])
  1717                         definitely_enable_video_x11_xcursor=yes
  1718                     else
  1719                         AC_CHECK_LIB(Xcursor, XcursorImageCreate, have_xcursor_lib=yes)
  1720                         if test x$have_xcursor_lib = xyes ; then
  1721                             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lXcursor"
  1722                             definitely_enable_video_x11_xcursor=yes
  1723                         fi
  1724                     fi
  1725                 fi
  1726             fi
  1727             if test x$definitely_enable_video_x11_xcursor = xyes; then
  1728                 AC_DEFINE(SDL_VIDEO_DRIVER_X11_XCURSOR, 1, [ ])
  1729                 SUMMARY_video_x11="${SUMMARY_video_x11} xcursor"
  1730             fi
  1731             AC_ARG_ENABLE(video-x11-xdbe,
  1732 AC_HELP_STRING([--enable-video-x11-xdbe], [enable X11 Xdbe support [[default=yes]]]),
  1733                             , enable_video_x11_xdbe=yes)
  1734             if test x$enable_video_x11_xdbe = xyes; then
  1735                 AC_CHECK_HEADER(X11/extensions/Xdbe.h,
  1736                                 have_dbe_h_hdr=yes,
  1737                                 have_dbe_h_hdr=no,
  1738                                 [#include <X11/Xlib.h>
  1739                                 ])
  1740                 if test x$have_dbe_h_hdr = xyes; then
  1741                     AC_DEFINE(SDL_VIDEO_DRIVER_X11_XDBE, 1, [ ])
  1742                     SUMMARY_video_x11="${SUMMARY_video_x11} xdbe"
  1743                 fi
  1744             fi
  1745             AC_ARG_ENABLE(video-x11-xinerama,
  1746 AC_HELP_STRING([--enable-video-x11-xinerama], [enable X11 Xinerama support [[default=yes]]]),
  1747                             , enable_video_x11_xinerama=yes)
  1748             if test x$enable_video_x11_xinerama = xyes; then
  1749                 definitely_enable_video_x11_xinerama=no
  1750                 AC_CHECK_HEADER(X11/extensions/Xinerama.h,
  1751                                 have_xinerama_h_hdr=yes,
  1752                                 have_xinerama_h_hdr=no,
  1753                                 [#include <X11/Xlib.h>
  1754                                 ])
  1755                 if test x$have_xinerama_h_hdr = xyes; then
  1756                     if test x$enable_x11_shared = xyes && test x$xinerama_lib != x ; then
  1757                         echo "-- dynamic libXinerama -> $xinerama_lib"
  1758                         AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XINERAMA, "$xinerama_lib", [ ])
  1759                         definitely_enable_video_x11_xinerama=yes
  1760                     else
  1761                         AC_CHECK_LIB(Xinerama, XineramaQueryExtension, have_xinerama_lib=yes)
  1762                         if test x$have_xinerama_lib = xyes ; then
  1763                             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lXinerama"
  1764                             definitely_enable_video_x11_xinerama=yes
  1765                         fi
  1766                     fi
  1767                 fi
  1768             fi
  1769             if test x$definitely_enable_video_x11_xinerama = xyes; then
  1770                 AC_DEFINE(SDL_VIDEO_DRIVER_X11_XINERAMA, 1, [ ])
  1771                 SUMMARY_video_x11="${SUMMARY_video_x11} xinerama"
  1772             fi
  1773             AC_ARG_ENABLE(video-x11-xinput,
  1774 AC_HELP_STRING([--enable-video-x11-xinput], [enable X11 XInput extension for manymouse, tablets, etc [[default=yes]]]),
  1775                             , enable_video_x11_xinput=yes)
  1776             if test x$enable_video_x11_xinput = xyes; then
  1777                 definitely_enable_video_x11_xinput=no
  1778                 AC_CHECK_HEADER(X11/extensions/XInput2.h,
  1779                                 have_xinput_h_hdr=yes,
  1780                                 have_xinput_h_hdr=no,
  1781                                 [#include <X11/Xlib.h>
  1782                                 ])
  1783                 if test x$have_xinput_h_hdr = xyes; then
  1784                     if test x$enable_x11_shared = xyes && test x$xinput_lib != x ; then
  1785                         echo "-- dynamic libXi -> $xinput_lib"
  1786                         AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XINPUT2, "$xinput_lib", [ ])
  1787                         definitely_enable_video_x11_xinput=yes
  1788                     else
  1789                         AC_CHECK_LIB(Xi, XOpenDevice, have_xinput_lib=yes)
  1790                         if test x$have_xinput_lib = xyes ; then
  1791                             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lXi"
  1792                             definitely_enable_video_x11_xinput=yes
  1793                         fi
  1794                     fi
  1795                 fi
  1796             fi
  1797             if test x$definitely_enable_video_x11_xinput = xyes; then
  1798                 SUMMARY_video_x11="${SUMMARY_video_x11} xinput2"
  1799                 AC_DEFINE(SDL_VIDEO_DRIVER_X11_XINPUT2, 1, [ ])
  1800                 AC_MSG_CHECKING(for xinput2 multitouch)
  1801             	have_xinput2_multitouch=no
  1802             	AC_TRY_COMPILE([
  1803               		#include <X11/Xlib.h>
  1804              		#include <X11/Xproto.h>
  1805 			#include <X11/extensions/XInput2.h>
  1806             	],[
  1807 int event_type = XI_TouchBegin;
  1808 XITouchClassInfo *t;
  1809             	],[
  1810             	have_xinput2_multitouch=yes
  1811             	AC_DEFINE([SDL_VIDEO_DRIVER_X11_XINPUT2_SUPPORTS_MULTITOUCH], 1, [])
  1812                 SUMMARY_video_x11="${SUMMARY_video_x11} xinput2_multitouch"
  1813             	])
  1814             	AC_MSG_RESULT($have_xinput2_multitouch)
  1815             fi
  1816             AC_ARG_ENABLE(video-x11-xrandr,
  1817 AC_HELP_STRING([--enable-video-x11-xrandr], [enable X11 Xrandr extension for fullscreen [[default=yes]]]),
  1818                             , enable_video_x11_xrandr=yes)
  1819             if test x$enable_video_x11_xrandr = xyes; then
  1820                 dnl XRRScreenResources is only present in Xrandr >= 1.2, we use that as a test.
  1821                 definitely_enable_video_x11_xrandr=no
  1822                 have_xrandr_h_hdr=no
  1823                 AC_TRY_COMPILE([
  1824                 #include <X11/Xlib.h>
  1825                 #include <X11/extensions/Xrandr.h>
  1826                 ],[
  1827                 XRRScreenResources *res = NULL;
  1828                 ],[
  1829                 have_xrandr_h_hdr=yes
  1830                 ])
  1831                 if test x$have_xrandr_h_hdr = xyes; then
  1832                     if test x$enable_x11_shared = xyes && test x$xrandr_lib != x ; then
  1833                         echo "-- dynamic libXrandr -> $xrandr_lib"
  1834                         AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR, "$xrandr_lib", [ ])
  1835                         definitely_enable_video_x11_xrandr=yes
  1836                     else
  1837                         AC_CHECK_LIB(Xrandr, XRRQueryExtension, have_xrandr_lib=yes)
  1838                         if test x$have_xrandr_lib = xyes ; then
  1839                             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lXrandr"
  1840                             definitely_enable_video_x11_xrandr=yes
  1841                         fi
  1842                     fi
  1843                 fi
  1844             fi
  1845             if test x$definitely_enable_video_x11_xrandr = xyes; then
  1846                 AC_DEFINE(SDL_VIDEO_DRIVER_X11_XRANDR, 1, [ ])
  1847                 SUMMARY_video_x11="${SUMMARY_video_x11} xrandr"
  1848             fi
  1849             AC_ARG_ENABLE(video-x11-scrnsaver,
  1850 AC_HELP_STRING([--enable-video-x11-scrnsaver], [enable X11 screensaver extension [[default=yes]]]),
  1851                             , enable_video_x11_scrnsaver=yes)
  1852             if test x$enable_video_x11_scrnsaver = xyes; then
  1853                 AC_CHECK_HEADER(X11/extensions/scrnsaver.h,
  1854                                 have_scrnsaver_h_hdr=yes,
  1855                                 have_scrnsaver_h_hdr=no,
  1856                                 [#include <X11/Xlib.h>
  1857                                 ])
  1858                 if test x$have_scrnsaver_h_hdr = xyes; then
  1859                     if test x$enable_x11_shared = xyes && test x$xss_lib != x ; then
  1860                         echo "-- dynamic libXss -> $xss_lib"
  1861                         AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XSS, "$xss_lib", [ ])
  1862                         definitely_enable_video_x11_scrnsaver=yes
  1863                     else
  1864                         AC_CHECK_LIB(Xss, XScreenSaverSuspend, have_xss_lib=yes)
  1865                         if test x$have_xss_lib = xyes ; then
  1866                             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lXss"
  1867                             definitely_enable_video_x11_scrnsaver=yes
  1868                         fi
  1869                     fi
  1870                 fi
  1871             fi
  1872             if test x$definitely_enable_video_x11_scrnsaver = xyes; then
  1873                 AC_DEFINE(SDL_VIDEO_DRIVER_X11_XSCRNSAVER, 1, [ ])
  1874                 SUMMARY_video_x11="${SUMMARY_video_x11} xscrnsaver"
  1875             fi
  1876             AC_ARG_ENABLE(video-x11-xshape,
  1877 AC_HELP_STRING([--enable-video-x11-xshape], [enable X11 XShape support [[default=yes]]]),
  1878                             , enable_video_x11_xshape=yes)
  1879             if test x$enable_video_x11_xshape = xyes; then
  1880                 AC_CHECK_HEADER(X11/extensions/shape.h,
  1881                                 have_shape_h_hdr=yes,
  1882                                 have_shape_h_hdr=no,
  1883                                 [#include <X11/Xlib.h>
  1884                                 ])
  1885                 if test x$have_shape_h_hdr = xyes; then
  1886                     AC_DEFINE(SDL_VIDEO_DRIVER_X11_XSHAPE, 1, [ ])
  1887                     SUMMARY_video_x11="${SUMMARY_video_x11} xshape"
  1888                 fi
  1889             fi
  1890             AC_ARG_ENABLE(video-x11-vm,
  1891 AC_HELP_STRING([--enable-video-x11-vm], [use X11 VM extension for fullscreen [[default=yes]]]),
  1892                             , enable_video_x11_vm=yes)
  1893             if test x$enable_video_x11_vm = xyes; then
  1894                 definitely_enable_video_x11_vm=no
  1895                 AC_CHECK_HEADER(X11/extensions/xf86vmode.h,
  1896                                 have_vm_h_hdr=yes,
  1897                                 have_vm_h_hdr=no,
  1898                                 [#include <X11/Xlib.h>
  1899                                 ])
  1900                 if test x$have_vm_h_hdr = xyes; then
  1901                     if test x$enable_x11_shared = xyes && test x$xvidmode_lib != x ; then
  1902                         echo "-- dynamic libXxf86vm -> $xvidmode_lib"
  1903                         AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XVIDMODE, "$xvidmode_lib", [ ])
  1904                         definitely_enable_video_x11_vm=yes
  1905                     else
  1906                         AC_CHECK_LIB(Xxf86vm, XF86VidModeQueryVersion, have_vm_lib=yes)
  1907                         if test x$have_vm_lib = xyes ; then
  1908                             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lXxf86vm"
  1909                             definitely_enable_video_x11_vm=yes
  1910                         fi
  1911                     fi
  1912                 fi
  1913             fi
  1914             if test x$definitely_enable_video_x11_vm = xyes; then
  1915                 AC_DEFINE(SDL_VIDEO_DRIVER_X11_XVIDMODE, 1, [ ])
  1916                 SUMMARY_video_x11="${SUMMARY_video_x11} xvidmode"
  1917             fi
  1918         fi
  1919     fi
  1920 }
  1921 
  1922 dnl Set up the Vivante video driver if enabled
  1923 CheckVivanteVideo()
  1924 {
  1925     AC_ARG_ENABLE(video-vivante,
  1926 AC_HELP_STRING([--enable-video-vivante], [use Vivante EGL video driver [[default=yes]]]),
  1927                   , enable_video_vivante=yes)
  1928     if test x$enable_video = xyes -a x$enable_video_vivante = xyes; then
  1929         AC_MSG_CHECKING(for Vivante VDK API)
  1930         have_vivante_vdk=no
  1931         AC_TRY_COMPILE([
  1932           #define LINUX
  1933           #define EGL_API_FB
  1934           #include <gc_vdk.h>
  1935         ],[
  1936         ],[
  1937         have_vivante_vdk=yes
  1938         ])
  1939         AC_MSG_RESULT($have_vivante_vdk)
  1940 
  1941         AC_MSG_CHECKING(for Vivante FB API)
  1942         have_vivante_egl=no
  1943         AC_TRY_COMPILE([
  1944           #define LINUX
  1945           #define EGL_API_FB
  1946           #include <EGL/eglvivante.h>
  1947         ],[
  1948         ],[
  1949         have_vivante_egl=yes
  1950         ])
  1951         AC_MSG_RESULT($have_vivante_egl)
  1952 
  1953         if test x$have_vivante_vdk = xyes -o x$have_vivante_egl = xyes; then
  1954             AC_DEFINE(SDL_VIDEO_DRIVER_VIVANTE, 1, [ ])
  1955             EXTRA_CFLAGS="$EXTRA_CFLAGS -DLINUX -DEGL_API_FB"
  1956             if test x$have_vivante_vdk = xyes; then
  1957                 AC_DEFINE(SDL_VIDEO_DRIVER_VIVANTE_VDK, 1, [ ])
  1958                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lVDK"
  1959             fi
  1960             SOURCES="$SOURCES $srcdir/src/video/vivante/*.c"
  1961             SUMMARY_video="${SUMMARY_video} vivante"
  1962             have_video=yes
  1963         fi
  1964     fi
  1965 }
  1966 
  1967 dnl Set up the Haiku video driver if enabled
  1968 CheckHaikuVideo()
  1969 {
  1970     if test x$enable_video = xyes; then
  1971         AC_DEFINE(SDL_VIDEO_DRIVER_HAIKU, 1, [ ])
  1972         SOURCES="$SOURCES $srcdir/src/video/haiku/*.cc"
  1973         have_video=yes
  1974         SUMMARY_video="${SUMMARY_video} haiku"
  1975     fi
  1976 }
  1977 
  1978 dnl Set up the Cocoa video driver for Mac OS X (but not Darwin)
  1979 CheckCOCOA()
  1980 {
  1981     AC_ARG_ENABLE(video-cocoa,
  1982 AC_HELP_STRING([--enable-video-cocoa], [use Cocoa video driver [[default=yes]]]),
  1983                   , enable_video_cocoa=yes)
  1984     if test x$enable_video = xyes -a x$enable_video_cocoa = xyes; then
  1985         save_CFLAGS="$CFLAGS"
  1986         dnl work around that we don't have Objective-C support in autoconf
  1987         CFLAGS="$CFLAGS -x objective-c"
  1988         AC_MSG_CHECKING(for Cocoa framework)
  1989         have_cocoa=no
  1990         AC_TRY_COMPILE([
  1991           #import <Cocoa/Cocoa.h>
  1992         ],[
  1993         ],[
  1994         have_cocoa=yes
  1995         ])
  1996         AC_MSG_RESULT($have_cocoa)
  1997         CFLAGS="$save_CFLAGS"
  1998         if test x$have_cocoa = xyes; then
  1999             AC_DEFINE(SDL_VIDEO_DRIVER_COCOA, 1, [ ])
  2000             SOURCES="$SOURCES $srcdir/src/video/cocoa/*.m"
  2001             SUMMARY_video="${SUMMARY_video} cocoa"
  2002             have_video=yes
  2003         fi
  2004     fi
  2005 }
  2006 
  2007 dnl Find DirectFB
  2008 CheckDirectFB()
  2009 {
  2010     AC_ARG_ENABLE(video-directfb,
  2011 AC_HELP_STRING([--enable-video-directfb], [use DirectFB video driver [[default=no]]]),
  2012                   , enable_video_directfb=no)
  2013     if test x$enable_video = xyes -a x$enable_video_directfb = xyes; then
  2014         video_directfb=no
  2015 
  2016         DIRECTFB_REQUIRED_VERSION=1.0.0
  2017         AC_PATH_PROGS(DIRECTFBCONFIG, directfb-config, no, [$prefix/bin:$PATH])
  2018         if test x$DIRECTFBCONFIG = xno; then
  2019             AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
  2020             if test x$PKG_CONFIG != xno; then
  2021                 if $PKG_CONFIG --atleast-pkgconfig-version 0.7 && $PKG_CONFIG --atleast-version $DIRECTFB_REQUIRED_VERSION directfb; then
  2022                     DIRECTFB_CFLAGS=`$PKG_CONFIG --cflags directfb`
  2023                     DIRECTFB_LIBS=`$PKG_CONFIG --libs directfb`
  2024                     DIRECTFB_PREFIX=`$PKG_CONFIG --variable=prefix directfb`
  2025                     video_directfb=yes
  2026                 fi
  2027             fi
  2028         else
  2029             set -- `echo $DIRECTFB_REQUIRED_VERSION | sed 's/\./ /g'`
  2030             NEED_VERSION=`expr $1 \* 10000 + $2 \* 100 + $3`
  2031             set -- `$DIRECTFBCONFIG --version | sed 's/\./ /g'`
  2032             HAVE_VERSION=`expr $1 \* 10000 + $2 \* 100 + $3`
  2033             if test $HAVE_VERSION -ge $NEED_VERSION; then
  2034                 DIRECTFB_CFLAGS=`$DIRECTFBCONFIG --cflags`
  2035                 DIRECTFB_LIBS=`$DIRECTFBCONFIG --libs`
  2036                 DIRECTFB_PREFIX=`$DIRECTFBCONFIG --prefix`
  2037                 video_directfb=yes
  2038             fi
  2039         fi
  2040         if test x$video_directfb = xyes; then
  2041             # SuSE 11.1 installs directfb-config without directfb-devel
  2042             save_CPPFLAGS="$CPPFLAGS"
  2043             CPPFLAGS="$CPPFLAGS $DIRECTFB_CFLAGS"
  2044             AC_CHECK_HEADER(directfb.h, have_directfb_hdr=yes, have_directfb_hdr=no)
  2045             CPPFLAGS="$save_CPPFLAGS"
  2046             video_directfb=$have_directfb_hdr
  2047         fi
  2048         AC_MSG_CHECKING(for DirectFB $DIRECTFB_REQUIRED_VERSION support)
  2049         AC_MSG_RESULT($video_directfb)
  2050 
  2051         if test x$video_directfb = xyes; then
  2052             AC_ARG_ENABLE(directfb-shared,
  2053 AC_HELP_STRING([--enable-directfb-shared], [dynamically load directfb support [[default=yes]]]),
  2054                               , enable_directfb_shared=yes)
  2055 
  2056             AC_DEFINE(SDL_VIDEO_DRIVER_DIRECTFB, 1, [ ])
  2057             AC_DEFINE(SDL_VIDEO_RENDER_DIRECTFB, 1, [ ])
  2058             SOURCES="$SOURCES $srcdir/src/video/directfb/*.c"
  2059             EXTRA_CFLAGS="$EXTRA_CFLAGS $DIRECTFB_CFLAGS"
  2060 
  2061             AC_MSG_CHECKING(for directfb dynamic loading support)
  2062             directfb_shared=no
  2063             directfb_lib=[`find_lib "libdirectfb*.so.*" "$DIRECTFB_LIBS"`]
  2064             # | sed 's/.*\/\(.*\)/\1/; q'`]
  2065 AC_MSG_WARN("directfb $directfb_lib")
  2066             if test x$have_loadso != xyes && \
  2067                test x$enable_directfb_shared = xyes; then
  2068                 AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic directfb loading])
  2069             fi
  2070             if test x$have_loadso = xyes && \
  2071                test x$enable_directfb_shared = xyes && test x$directfb_lib != x; then
  2072                 directfb_shared=yes
  2073                 echo "-- $directfb_lib_spec -> $directfb_lib"
  2074                 AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_DIRECTFB_DYNAMIC, "$directfb_lib", [ ])
  2075                 SUMMARY_video="${SUMMARY_video} directfb(dynamic)"
  2076             else
  2077                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS $DIRECTFB_LIBS"
  2078                 SUMMARY_video="${SUMMARY_video} directfb"
  2079             fi
  2080             AC_MSG_RESULT($directfb_shared)
  2081             SDL_CFLAGS="$SDL_CFLAGS $DIRECTFB_CFLAGS"
  2082             have_video=yes
  2083         fi
  2084     fi
  2085 }
  2086 
  2087 dnl Find KMSDRM
  2088 CheckKMSDRM()
  2089 {
  2090     AC_ARG_ENABLE(video-kmsdrm,
  2091 AC_HELP_STRING([--enable-video-kmsdrm], [use KMSDRM video driver [[default=no]]]),
  2092                   , enable_video_kmsdrm=no)
  2093 
  2094     if test x$enable_video = xyes -a x$enable_video_kmsdrm = xyes; then
  2095         video_kmsdrm=no
  2096         libdrm_avail=no
  2097         libgbm_avail=no
  2098 
  2099         LIBDRM_REQUIRED_VERSION=2.4.46
  2100         LIBGBM_REQUIRED_VERSION=9.0.0
  2101 
  2102         AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
  2103         if test x$PKG_CONFIG != xno; then
  2104             if $PKG_CONFIG --atleast-pkgconfig-version 0.7; then
  2105                 if $PKG_CONFIG --atleast-version $LIBDRM_REQUIRED_VERSION libdrm; then
  2106                     LIBDRM_CFLAGS=`$PKG_CONFIG --cflags libdrm`
  2107                     LIBDRM_LIBS=`$PKG_CONFIG --libs libdrm`
  2108                     LIBDRM_PREFIX=`$PKG_CONFIG --variable=prefix libdrm`
  2109                     libdrm_avail=yes
  2110                 fi
  2111                 if $PKG_CONFIG --atleast-version $LIBGBM_REQUIRED_VERSION gbm; then
  2112                     LIBGBM_CFLAGS=`$PKG_CONFIG --cflags gbm`
  2113                     LIBGBM_LIBS=`$PKG_CONFIG --libs gbm`
  2114                     LIBGBM_PREFIX=`$PKG_CONFIG --variable=prefix gbm`
  2115                     libgbm_avail=yes
  2116                 fi
  2117                 if test x$libdrm_avail = xyes -a x$libgbm_avail = xyes; then
  2118                     video_kmsdrm=yes
  2119                 fi
  2120  
  2121                 AC_MSG_CHECKING(for libdrm $LIBDRM_REQUIRED_VERSION library for kmsdrm support)
  2122                 AC_MSG_RESULT($libdrm_avail)
  2123                 AC_MSG_CHECKING(for libgbm $LIBGBM_REQUIRED_VERSION library for kmsdrm support)
  2124                 AC_MSG_RESULT($libgbm_avail)
  2125 
  2126                 if test x$video_kmsdrm = xyes; then
  2127                     AC_ARG_ENABLE(kmsdrm-shared,
  2128 AC_HELP_STRING([--enable-kmsdrm-shared], [dynamically load kmsdrm support [[default=yes]]]),
  2129                               , enable_kmsdrm_shared=yes)
  2130 
  2131                     AC_DEFINE(SDL_VIDEO_DRIVER_KMSDRM, 1, [ ])
  2132                     SOURCES="$SOURCES $srcdir/src/video/kmsdrm/*.c"
  2133                     EXTRA_CFLAGS="$EXTRA_CFLAGS $LIBDRM_CFLAGS $LIBGBM_CFLAGS"
  2134 
  2135                     AC_MSG_CHECKING(for kmsdrm dynamic loading support)
  2136                     kmsdrm_shared=no
  2137                     drm_lib=[`find_lib "libdrm.so.*" "$DRM_LIBS"`]
  2138                     gbm_lib=[`find_lib "libgbm.so.*" "$DRM_LIBS"`]
  2139                     if test x$have_loadso != xyes && \
  2140                        test x$enable_kmsdrm_shared = xyes; then
  2141                         AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic kmsdrm loading])
  2142                     fi
  2143                     if test x$have_loadso = xyes && \
  2144                        test x$enable_kmsdrm_shared = xyes && test x$drm_lib != x && test x$gbm_lib != x; then
  2145                         kmsdrm_shared=yes
  2146                         AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_KMSDRM_DYNAMIC, "$drm_lib", [ ])
  2147                         AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_KMSDRM_DYNAMIC_GBM, "$gbm_lib", [ ])
  2148                         AC_DEFINE_UNQUOTED(HAVE_KMSDRM_SHARED, "TRUE", [ ])
  2149                         SUMMARY_video="${SUMMARY_video} kmsdrm(dynamic)"
  2150                     else
  2151                         EXTRA_LDFLAGS="$EXTRA_LDFLAGS $LIBDRM_LIBS $LIBGBM_LIBS"
  2152                         SUMMARY_video="${SUMMARY_video} kmsdrm"
  2153                     fi
  2154                     AC_MSG_RESULT($kmsdrm_shared)
  2155                     have_video=yes
  2156                 fi
  2157             fi
  2158         fi
  2159     fi
  2160 }
  2161 
  2162 dnl rcg04172001 Set up the Null video driver.
  2163 CheckDummyVideo()
  2164 {
  2165     AC_ARG_ENABLE(video-dummy,
  2166 AC_HELP_STRING([--enable-video-dummy], [use dummy video driver [[default=yes]]]),
  2167                   , enable_video_dummy=yes)
  2168     if test x$enable_video_dummy = xyes; then
  2169         AC_DEFINE(SDL_VIDEO_DRIVER_DUMMY, 1, [ ])
  2170         SOURCES="$SOURCES $srcdir/src/video/dummy/*.c"
  2171         have_video=yes
  2172         SUMMARY_video="${SUMMARY_video} dummy"
  2173     fi
  2174 }
  2175 
  2176 dnl Set up the QNX video driver if enabled
  2177 CheckQNXVideo()
  2178 {
  2179     if test x$enable_video = xyes; then
  2180         AC_DEFINE(SDL_VIDEO_DRIVER_QNX, 1, [ ])
  2181         SOURCES="$SOURCES $srcdir/src/video/qnx/*.c"
  2182         have_video=yes
  2183         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lscreen -lEGL -lGLESv2"
  2184         SUMMARY_video="${SUMMARY_video} qnx"
  2185     fi
  2186 }
  2187 
  2188 dnl Set up the QNX audio driver if enabled
  2189 CheckQNXAudio()
  2190 {
  2191     if test x$enable_audio = xyes; then
  2192         AC_DEFINE(SDL_AUDIO_DRIVER_QSA, 1, [ ])
  2193         SOURCES="$SOURCES $srcdir/src/audio/qsa/*.c"
  2194         have_audio=yes
  2195         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lasound"
  2196         SUMMARY_audio="${SUMMARY_audio} qsa"
  2197     fi
  2198 }
  2199 
  2200 dnl Check to see if OpenGL support is desired
  2201 AC_ARG_ENABLE(video-opengl,
  2202 AC_HELP_STRING([--enable-video-opengl], [include OpenGL support [[default=yes]]]),
  2203               , enable_video_opengl=yes)
  2204 
  2205 dnl Find OpenGL
  2206 CheckOpenGLX11()
  2207 {
  2208     if test x$enable_video = xyes -a x$enable_video_opengl = xyes; then
  2209         AC_MSG_CHECKING(for OpenGL (GLX) support)
  2210         video_opengl=no
  2211         AC_TRY_COMPILE([
  2212          #include <GL/gl.h>
  2213          #include <GL/glx.h>
  2214         ],[
  2215         ],[
  2216         video_opengl=yes
  2217         ])
  2218         AC_MSG_RESULT($video_opengl)
  2219         if test x$video_opengl = xyes; then
  2220             AC_DEFINE(SDL_VIDEO_OPENGL, 1, [ ])
  2221             AC_DEFINE(SDL_VIDEO_OPENGL_GLX, 1, [ ])
  2222             AC_DEFINE(SDL_VIDEO_RENDER_OGL, 1, [ ])
  2223             SUMMARY_video="${SUMMARY_video} opengl"
  2224         fi
  2225     fi
  2226 }
  2227 
  2228 dnl Check to see if OpenGL ES support is desired
  2229 AC_ARG_ENABLE(video-opengles,
  2230 AC_HELP_STRING([--enable-video-opengles], [include OpenGL ES support [[default=yes]]]),
  2231               , enable_video_opengles=yes)
  2232 AC_ARG_ENABLE(video-opengles1,
  2233 AC_HELP_STRING([--enable-video-opengles1], [include OpenGL ES 1.1 support [[default=yes]]]),
  2234               , enable_video_opengles1=yes)
  2235 AC_ARG_ENABLE(video-opengles2,
  2236 AC_HELP_STRING([--enable-video-opengles2], [include OpenGL ES 2.0 support [[default=yes]]]),
  2237               , enable_video_opengles2=yes)
  2238 
  2239 dnl Find OpenGL ES
  2240 CheckOpenGLESX11()
  2241 {
  2242     if test x$enable_video = xyes -a x$enable_video_opengles = xyes; then
  2243         AC_MSG_CHECKING(for EGL support)
  2244         video_opengl_egl=no
  2245         AC_TRY_COMPILE([
  2246           #define LINUX
  2247           #define EGL_API_FB
  2248           #include <EGL/egl.h>
  2249           #include <EGL/eglext.h>
  2250         ],[
  2251         ],[
  2252         video_opengl_egl=yes
  2253         ])
  2254         AC_MSG_RESULT($video_opengl_egl)
  2255         if test x$video_opengl_egl = xyes; then
  2256             AC_DEFINE(SDL_VIDEO_OPENGL_EGL, 1, [ ])
  2257         fi
  2258             
  2259         if test x$enable_video_opengles1 = xyes; then
  2260             AC_MSG_CHECKING(for OpenGL ES v1 headers)
  2261             video_opengles_v1=no
  2262             AC_TRY_COMPILE([
  2263              #include <GLES/gl.h>
  2264              #include <GLES/glext.h>
  2265             ],[
  2266             ],[
  2267             video_opengles_v1=yes
  2268             ])
  2269             AC_MSG_RESULT($video_opengles_v1)
  2270             if test x$video_opengles_v1 = xyes; then
  2271                 AC_DEFINE(SDL_VIDEO_OPENGL_ES, 1, [ ])
  2272                 AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES, 1, [ ])
  2273                 SUMMARY_video="${SUMMARY_video} opengl_es1"
  2274             fi
  2275         fi
  2276         
  2277         if test x$enable_video_opengles2 = xyes; then
  2278             AC_MSG_CHECKING(for OpenGL ES v2 headers)
  2279             video_opengles_v2=no
  2280             AC_TRY_COMPILE([
  2281              #include <GLES2/gl2.h>
  2282              #include <GLES2/gl2ext.h>
  2283             ],[
  2284             ],[
  2285             video_opengles_v2=yes
  2286             ])
  2287             AC_MSG_RESULT($video_opengles_v2)
  2288             if test x$video_opengles_v2 = xyes; then
  2289                 AC_DEFINE(SDL_VIDEO_OPENGL_ES2, 1, [ ])
  2290                 AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES2, 1, [ ])
  2291                 SUMMARY_video="${SUMMARY_video} opengl_es2"
  2292             fi
  2293         fi
  2294     fi
  2295 }
  2296 
  2297 dnl Check for Windows OpenGL
  2298 CheckWINDOWSGL()
  2299 {
  2300     if test x$enable_video = xyes -a x$enable_video_opengl = xyes; then
  2301         AC_DEFINE(SDL_VIDEO_OPENGL, 1, [ ])
  2302         AC_DEFINE(SDL_VIDEO_OPENGL_WGL, 1, [ ])
  2303         AC_DEFINE(SDL_VIDEO_RENDER_OGL, 1, [ ])
  2304         SUMMARY_video="${SUMMARY_video} opengl"
  2305     fi
  2306 }
  2307 
  2308 dnl Check for Windows OpenGL
  2309 CheckWINDOWSGLES()
  2310 {
  2311     if test x$enable_video = xyes -a x$enable_video_opengles = xyes; then
  2312 
  2313         AC_MSG_CHECKING(for EGL support)
  2314         video_opengl_egl=no
  2315         AC_TRY_COMPILE([
  2316          #include <EGL/egl.h>
  2317         ],[
  2318         ],[
  2319         video_opengl_egl=yes
  2320         ])
  2321         AC_MSG_RESULT($video_opengl_egl)
  2322         if test x$video_opengl_egl = xyes; then
  2323             AC_DEFINE(SDL_VIDEO_OPENGL, 1, [ ])
  2324             AC_DEFINE(SDL_VIDEO_OPENGL_EGL, 1, [ ])
  2325             SUMMARY_video="${SUMMARY_video} opengl_es1"
  2326         fi
  2327        
  2328         AC_MSG_CHECKING(for OpenGL ES v2 headers)
  2329         video_opengles_v2=no
  2330         AC_TRY_COMPILE([
  2331          #include <GLES2/gl2.h>
  2332          #include <GLES2/gl2ext.h>
  2333         ],[
  2334         ],[
  2335         video_opengles_v2=yes
  2336         ])
  2337         AC_MSG_RESULT($video_opengles_v2)
  2338         if test x$video_opengles_v2 = xyes; then
  2339             AC_DEFINE(SDL_VIDEO_OPENGL, 1, [ ])
  2340             AC_DEFINE(SDL_VIDEO_OPENGL_ES2, 1, [ ])
  2341             AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES2, 1, [ ])
  2342             SUMMARY_video="${SUMMARY_video} opengl_es2"
  2343         fi
  2344     fi
  2345 }
  2346 
  2347 dnl Check for Haiku OpenGL
  2348 CheckHaikuGL()
  2349 {
  2350     if test x$enable_video = xyes -a x$enable_video_opengl = xyes; then
  2351         AC_DEFINE(SDL_VIDEO_OPENGL, 1, [ ])
  2352         AC_DEFINE(SDL_VIDEO_OPENGL_HAIKU, 1, [ ])
  2353         AC_DEFINE(SDL_VIDEO_RENDER_OGL, 1, [ ])
  2354         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lGL"
  2355         SUMMARY_video="${SUMMARY_video} opengl"
  2356     fi
  2357 }
  2358 
  2359 dnl Check for MacOS OpenGL
  2360 CheckMacGL()
  2361 {
  2362     if test x$enable_video = xyes -a x$enable_video_opengl = xyes; then
  2363         AC_DEFINE(SDL_VIDEO_OPENGL, 1, [ ])
  2364         AC_DEFINE(SDL_VIDEO_OPENGL_CGL, 1, [ ])
  2365         AC_DEFINE(SDL_VIDEO_RENDER_OGL, 1, [ ])
  2366         SUMMARY_video="${SUMMARY_video} opengl"
  2367     fi
  2368 }
  2369 
  2370 CheckEmscriptenGLES()
  2371 {
  2372     if test x$enable_video = xyes -a x$enable_video_opengles = xyes; then
  2373         AC_MSG_CHECKING(for EGL support)
  2374         video_opengl_egl=no
  2375         AC_TRY_COMPILE([
  2376          #include <EGL/egl.h>
  2377         ],[
  2378         ],[
  2379         video_opengl_egl=yes
  2380         ])
  2381         AC_MSG_RESULT($video_opengl_egl)
  2382         if test x$video_opengl_egl = xyes; then
  2383             AC_DEFINE(SDL_VIDEO_OPENGL_EGL, 1, [ ])
  2384         fi
  2385 
  2386         AC_MSG_CHECKING(for OpenGL ES v2 headers)
  2387         video_opengles_v2=no
  2388         AC_TRY_COMPILE([
  2389          #include <GLES2/gl2.h>
  2390          #include <GLES2/gl2ext.h>
  2391         ],[
  2392         ],[
  2393         video_opengles_v2=yes
  2394         ])
  2395         AC_MSG_RESULT($video_opengles_v2)
  2396         if test x$video_opengles_v2 = xyes; then
  2397             AC_DEFINE(SDL_VIDEO_OPENGL_ES2, 1, [ ])
  2398             AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES2, 1, [ ])
  2399             SUMMARY_video="${SUMMARY_video} opengl_es2"
  2400         fi
  2401     fi
  2402 }
  2403 
  2404 dnl Check to see if Vulkan surface support is desired
  2405 AC_ARG_ENABLE(video-vulkan,
  2406 AC_HELP_STRING([--enable-video-vulkan], [include Vulkan surface support [[default=yes]]]),
  2407               , enable_video_vulkan=yes)
  2408 
  2409 dnl Find Vulkan Header
  2410 CheckVulkan()
  2411 {
  2412     have_vulkan_hdr=no
  2413     if test x$enable_video = xyes -a x$enable_video_vulkan = xyes; then
  2414         case "$host" in
  2415             *-*-androideabi*)
  2416                 AC_TRY_COMPILE([
  2417                   #if defined(__ANDROID__) && defined(__ARM_EABI__) && !defined(__ARM_ARCH_7A__)
  2418                   #error Vulkan doesn't work on this configuration
  2419                   #endif
  2420                   int main()
  2421                   {
  2422                      return 0;
  2423                   }
  2424                 ],[
  2425                     enable_video_vulkan=no
  2426                 ],[
  2427                 ])
  2428                 ;;
  2429             *)
  2430                 ;;
  2431         esac
  2432         if test x$enable_video_vulkan = xno; then
  2433             # For reasons I am totally unable to see, I get an undefined macro error if
  2434             # I put this in the AC_TRY_COMPILE.
  2435             AC_MSG_WARN([Sorry, Vulkan does not work on this configuration.])
  2436         fi
  2437         if test x$enable_video_vulkan = xyes; then
  2438             vsdk_include_dir="${VULKAN_SDK}/include"
  2439             vulkan_header="vulkan/vulkan.h"
  2440             save_CPPFLAGS="$CPPFLAGS"
  2441             CPPFLAGS="${save_CPPFLAGS} -I$vsdk_include_dir"
  2442             AC_CHECK_HEADER($vulkan_header,
  2443                             have_vulkan_hdr=yes,
  2444                             have_vulkan_hdr=no)
  2445             CPPFLAGS="$save_CPPFLAGS"
  2446         fi
  2447     fi
  2448     if test x$have_vulkan_hdr = xyes; then
  2449         # vulkan.h has been found in either $VULKAN_SDK/include or along the
  2450         # the standard include path. Unfortunately there seems no easy
  2451         # way to find out which, so...
  2452         if test -n "$VULKAN_SDK" -a -f "$vsdk_include_dir/$vulkan_header"; then 
  2453             EXTRA_CFLAGS="$EXTRA_CFLAGS -I$vsdk_include_dir"
  2454         fi
  2455         AC_DEFINE(SDL_VIDEO_VULKAN_SURFACE, 1, [ ])
  2456         SUMMARY_video="${SUMMARY_video} vulkan"
  2457     fi
  2458 }
  2459 
  2460 dnl See if we can use the new unified event interface in Linux 2.4
  2461 CheckInputEvents()
  2462 {
  2463     dnl Check for Linux 2.4 unified input event interface support
  2464         AC_MSG_CHECKING(for Linux 2.4 unified input interface)
  2465         use_input_events=no
  2466         AC_TRY_COMPILE([
  2467           #include <linux/input.h>
  2468         ],[
  2469           #ifndef EVIOCGNAME
  2470           #error EVIOCGNAME() ioctl not available
  2471           #endif
  2472         ],[
  2473         use_input_events=yes
  2474         ])
  2475         AC_MSG_RESULT($use_input_events)
  2476         if test x$use_input_events = xyes; then
  2477             AC_DEFINE(SDL_INPUT_LINUXEV, 1, [ ])
  2478             SUMMARY_input="${SUMMARY_input} linuxev"
  2479         fi
  2480 }
  2481 
  2482 dnl See if we can use the kernel kd.h header
  2483 CheckInputKD()
  2484 {
  2485 
  2486     AC_MSG_CHECKING(for Linux kd.h)
  2487     use_input_kd=no
  2488     AC_TRY_COMPILE([
  2489       #include <linux/kd.h>
  2490       #include <linux/keyboard.h>
  2491     ],[
  2492         struct kbentry kbe;
  2493         kbe.kb_table = KG_CTRL;
  2494         ioctl(0, KDGKBENT, &kbe);
  2495     ],[
  2496     use_input_kd=yes
  2497     ])
  2498     AC_MSG_RESULT($use_input_kd)
  2499     if test x$use_input_kd = xyes; then
  2500         AC_DEFINE(SDL_INPUT_LINUXKD, 1, [ ])
  2501         SUMMARY_input="${SUMMARY_input} linuxkd"
  2502     fi
  2503 }
  2504 
  2505 dnl See if the platform offers libudev for device enumeration and hotplugging.
  2506 CheckLibUDev()
  2507 {
  2508     AC_ARG_ENABLE(libudev,
  2509 AC_HELP_STRING([--enable-libudev], [enable libudev support [[default=yes]]]),
  2510                         , enable_libudev=yes)
  2511     if test x$enable_libudev = xyes; then
  2512         AC_CHECK_HEADER(libudev.h,
  2513                         have_libudev_h_hdr=yes,
  2514                         have_libudev_h_hdr=no)
  2515         if test x$have_libudev_h_hdr = xyes; then
  2516             AC_DEFINE(HAVE_LIBUDEV_H, 1, [ ])
  2517 
  2518             udev_lib=[`find_lib "libudev.so.*" "" | sed 's/.*\/\(.*\)/\1/; q'`]
  2519             if test x$udev_lib != x; then
  2520                 echo "-- dynamic udev -> $udev_lib"
  2521                 AC_DEFINE_UNQUOTED(SDL_UDEV_DYNAMIC, "$udev_lib", [ ])
  2522             fi
  2523         fi
  2524     fi
  2525 }
  2526 
  2527 dnl See if the platform offers libdbus for various IPC techniques.
  2528 CheckDBus()
  2529 {
  2530     AC_ARG_ENABLE(dbus,
  2531 AC_HELP_STRING([--enable-dbus], [enable D-Bus support [[default=yes]]]),
  2532                         , enable_dbus=yes)
  2533     if test x$enable_dbus = xyes; then
  2534         AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
  2535         if test x$PKG_CONFIG != xno; then
  2536             DBUS_CFLAGS=`$PKG_CONFIG --cflags dbus-1`
  2537             save_CFLAGS="$CFLAGS"
  2538             CFLAGS="$save_CFLAGS $DBUS_CFLAGS"
  2539             AC_CHECK_HEADER(dbus/dbus.h,
  2540                             have_dbus_dbus_h_hdr=yes,
  2541                             have_dbus_dbus_h_hdr=no)
  2542             CFLAGS="$save_CFLAGS"
  2543             if test x$have_dbus_dbus_h_hdr = xyes; then
  2544                 AC_DEFINE(HAVE_DBUS_DBUS_H, 1, [ ])
  2545                 EXTRA_CFLAGS="$EXTRA_CFLAGS $DBUS_CFLAGS"
  2546                 SOURCES="$SOURCES $srcdir/src/core/linux/SDL_dbus.c"
  2547             fi
  2548         fi
  2549     fi
  2550 }
  2551 
  2552 dnl See if the platform wanna IME support.
  2553 CheckIME()
  2554 {
  2555     AC_ARG_ENABLE(ime,
  2556 AC_HELP_STRING([--enable-ime], [enable IME support [[default=yes]]]),
  2557                   , enable_ime=yes)
  2558     if test x$enable_ime = xyes; then
  2559         AC_DEFINE(SDL_USE_IME, 1, [ ])
  2560             SOURCES="$SOURCES $srcdir/src/core/linux/SDL_ime.c"
  2561     fi
  2562 }
  2563 
  2564 dnl See if the platform has libibus IME support.
  2565 CheckIBus()
  2566 {
  2567     AC_ARG_ENABLE(ibus,
  2568 AC_HELP_STRING([--enable-ibus], [enable IBus support [[default=yes]]]),
  2569                   , enable_ibus=yes)
  2570     if test x$enable_ibus = xyes; then
  2571         AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
  2572         if test x$PKG_CONFIG != xno; then
  2573             IBUS_CFLAGS=`$PKG_CONFIG --cflags ibus-1.0`
  2574             save_CFLAGS="$CFLAGS"
  2575             CFLAGS="$save_CFLAGS $IBUS_CFLAGS"
  2576             AC_CHECK_HEADER(ibus-1.0/ibus.h,
  2577                             have_ibus_ibus_h_hdr=yes,
  2578                             have_ibus_ibus_h_hdr=no)
  2579             AC_CHECK_HEADER(sys/inotify.h,
  2580                             have_inotify_inotify_h_hdr=yes,
  2581                             have_inotify_inotify_h_hdr=no)
  2582             CFLAGS="$save_CFLAGS"
  2583             if test x$have_ibus_ibus_h_hdr = xyes; then
  2584                 if test x$enable_ime != xyes; then
  2585                     AC_MSG_WARN([IME support is required for IBus.])
  2586                     have_ibus_ibus_h_hdr=no
  2587                 elif test x$enable_dbus != xyes; then
  2588                     AC_MSG_WARN([DBus support is required for IBus.])
  2589                     have_ibus_ibus_h_hdr=no
  2590                 elif test x$have_inotify_inotify_h_hdr != xyes; then
  2591                     AC_MSG_WARN([INotify support is required for IBus.])
  2592                     have_ibus_ibus_h_hdr=no
  2593                 else
  2594                     AC_DEFINE(HAVE_IBUS_IBUS_H, 1, [ ])
  2595                     EXTRA_CFLAGS="$EXTRA_CFLAGS $IBUS_CFLAGS"
  2596                     SOURCES="$SOURCES $srcdir/src/core/linux/SDL_ibus.c"
  2597                fi
  2598             fi
  2599         fi
  2600     fi
  2601 }
  2602 
  2603 dnl See if the platform has fcitx IME support.
  2604 CheckFcitx()
  2605 {
  2606     AC_ARG_ENABLE(fcitx,
  2607 AC_HELP_STRING([--enable-fcitx], [enable fcitx support [[default=yes]]]),
  2608                   , enable_fcitx=yes)
  2609     if test x$enable_fcitx = xyes; then
  2610         AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
  2611         if test x$PKG_CONFIG != xno; then
  2612             FCITX_CFLAGS=`$PKG_CONFIG --cflags fcitx`
  2613             CFLAGS="$CFLAGS $FCITX_CFLAGS"
  2614             AC_CHECK_HEADER(fcitx/frontend.h,
  2615                             have_fcitx_frontend_h_hdr=yes,
  2616                             have_fcitx_frontend_h_hdr=no)
  2617             CFLAGS="$save_CFLAGS"
  2618             if test x$have_fcitx_frontend_h_hdr = xyes; then
  2619                 if test x$enable_ime != xyes; then
  2620                     AC_MSG_WARN([IME support is required for fcitx.])
  2621                     have_fcitx_frontend_h_hdr=no
  2622                 elif test x$enable_dbus != xyes; then
  2623                     AC_MSG_WARN([DBus support is required for fcitx.])
  2624                     have_fcitx_frontend_h_hdr=no
  2625                 else
  2626                     AC_DEFINE(HAVE_FCITX_FRONTEND_H, 1, [ ])
  2627                     EXTRA_CFLAGS="$EXTRA_CFLAGS $FCITX_CFLAGS"
  2628                     SOURCES="$SOURCES $srcdir/src/core/linux/SDL_fcitx.c"
  2629                fi
  2630             fi
  2631         fi
  2632     fi
  2633 }
  2634 
  2635 dnl See if we can use the Touchscreen input library
  2636 CheckTslib()
  2637 {
  2638     AC_ARG_ENABLE(input-tslib,
  2639 AC_HELP_STRING([--enable-input-tslib], [use the Touchscreen library for input [[default=yes]]]),
  2640                   , enable_input_tslib=yes)
  2641     if test x$enable_input_tslib = xyes; then
  2642         AC_MSG_CHECKING(for Touchscreen library support)
  2643         enable_input_tslib=no
  2644         AC_TRY_COMPILE([
  2645           #include "tslib.h"
  2646         ],[
  2647         ],[
  2648         enable_input_tslib=yes
  2649         ])
  2650         AC_MSG_RESULT($enable_input_tslib)
  2651         if test x$enable_input_tslib = xyes; then
  2652             AC_DEFINE(SDL_INPUT_TSLIB, 1, [ ])
  2653             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lts"
  2654             SUMMARY_input="${SUMMARY_input} ts"
  2655         fi
  2656     fi
  2657 }
  2658 
  2659 dnl See what type of thread model to use on Linux and Solaris
  2660 CheckPTHREAD()
  2661 {
  2662     dnl Check for pthread support
  2663     AC_ARG_ENABLE(pthreads,
  2664 AC_HELP_STRING([--enable-pthreads], [use POSIX threads for multi-threading [[default=yes]]]),
  2665                   , enable_pthreads=yes)
  2666     dnl This is used on Linux for glibc binary compatibility (Doh!)
  2667     AC_ARG_ENABLE(pthread-sem,
  2668 AC_HELP_STRING([--enable-pthread-sem], [use pthread semaphores [[default=yes]]]),
  2669                   , enable_pthread_sem=yes)
  2670     case "$host" in
  2671          *-*-androideabi*)
  2672             pthread_cflags="-D_REENTRANT -D_THREAD_SAFE"
  2673             pthread_lib=""
  2674             ;;
  2675         *-*-linux*|*-*-uclinux*)
  2676             pthread_cflags="-D_REENTRANT"
  2677             pthread_lib="-lpthread"
  2678             ;;
  2679         *-*-bsdi*)
  2680             pthread_cflags="-D_REENTRANT -D_THREAD_SAFE"
  2681             pthread_lib=""
  2682             ;;
  2683         *-*-darwin*)
  2684             pthread_cflags="-D_THREAD_SAFE"
  2685 # causes Carbon.p complaints?
  2686 #            pthread_cflags="-D_REENTRANT -D_THREAD_SAFE"
  2687             ;;
  2688         *-*-freebsd*|*-*-dragonfly*)
  2689             pthread_cflags="-D_REENTRANT -D_THREAD_SAFE"
  2690             pthread_lib="-pthread"
  2691             ;;
  2692         *-*-netbsd*)
  2693             pthread_cflags="-D_REENTRANT -D_THREAD_SAFE"
  2694             pthread_lib="-lpthread"
  2695             ;;
  2696         *-*-openbsd*)
  2697             pthread_cflags="-D_REENTRANT"
  2698             pthread_lib="-pthread"
  2699             ;;
  2700         *-*-solaris2.9)
  2701             # From Solaris 9+, posix4's preferred name is rt.
  2702             pthread_cflags="-D_REENTRANT"
  2703             pthread_lib="-lpthread -lrt"
  2704             ;;
  2705         *-*-solaris2.10)
  2706             # Solaris 10+ merged pthread into libc.
  2707             pthread_cflags="-D_REENTRANT"
  2708             pthread_lib="-lrt"
  2709             ;;
  2710         *-*-solaris*)
  2711             # Solaris 11+ merged rt into libc.
  2712             pthread_cflags="-D_REENTRANT"
  2713             pthread_lib=""
  2714             ;;
  2715         *-*-sysv5*)
  2716             pthread_cflags="-D_REENTRANT -Kthread"
  2717             pthread_lib=""
  2718             ;;
  2719         *-*-aix*)
  2720             pthread_cflags="-D_REENTRANT -mthreads"
  2721             pthread_lib="-lpthread"
  2722             ;;
  2723         *-*-hpux11*)
  2724             pthread_cflags="-D_REENTRANT"
  2725             pthread_lib="-L/usr/lib -lpthread"
  2726             ;;
  2727         *-*-haiku*)
  2728             pthread_cflags="-D_REENTRANT"
  2729             pthread_lib=""
  2730             ;;
  2731         *-*-nto*)
  2732             pthread_cflags="-D_REENTRANT"
  2733             pthread_lib=""
  2734             ;;
  2735         *)
  2736             pthread_cflags="-D_REENTRANT"
  2737             pthread_lib="-lpthread"
  2738             ;;
  2739     esac
  2740     if test x$enable_threads = xyes -a x$enable_pthreads = xyes; then
  2741         # Save the original compiler flags and libraries
  2742         ac_save_cflags="$CFLAGS"; ac_save_libs="$LIBS"
  2743         # Add the pthread compiler flags and libraries
  2744         CFLAGS="$CFLAGS $pthread_cflags"; LIBS="$LIBS $pthread_lib"
  2745         # Check to see if we have pthread support on this system
  2746         AC_MSG_CHECKING(for pthreads)
  2747         use_pthreads=no
  2748         AC_TRY_LINK([
  2749          #include <pthread.h>
  2750         ],[
  2751          pthread_attr_t type;
  2752          pthread_attr_init(&type);
  2753         ],[
  2754         use_pthreads=yes
  2755         ])
  2756         AC_MSG_RESULT($use_pthreads)
  2757         # Restore the compiler flags and libraries
  2758         CFLAGS="$ac_save_cflags"; LIBS="$ac_save_libs"
  2759 
  2760         # Do futher testing if we have pthread support...
  2761         if test x$use_pthreads = xyes; then
  2762             AC_DEFINE(SDL_THREAD_PTHREAD, 1, [ ])
  2763             EXTRA_CFLAGS="$EXTRA_CFLAGS $pthread_cflags"
  2764             EXTRA_LDFLAGS="$EXTRA_LDFLAGS $pthread_lib"
  2765             SDL_CFLAGS="$SDL_CFLAGS $pthread_cflags"
  2766 
  2767             # Save the original compiler flags and libraries
  2768             ac_save_cflags="$CFLAGS"; ac_save_libs="$LIBS"
  2769             # Add the pthread compiler flags and libraries
  2770             CFLAGS="$CFLAGS $pthread_cflags"; LIBS="$LIBS $pthread_lib"
  2771 
  2772             # Check to see if recursive mutexes are available
  2773             AC_MSG_CHECKING(for recursive mutexes)
  2774             has_recursive_mutexes=no
  2775             if test x$has_recursive_mutexes = xno; then
  2776                 AC_TRY_LINK([
  2777                   #define _GNU_SOURCE 1
  2778                   #include <pthread.h>
  2779                 ],[
  2780                   pthread_mutexattr_t attr;
  2781                   pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
  2782                 ],[
  2783                 has_recursive_mutexes=yes
  2784                 AC_DEFINE(SDL_THREAD_PTHREAD_RECURSIVE_MUTEX, 1, [ ])
  2785                 ])
  2786             fi
  2787             if test x$has_recursive_mutexes = xno; then
  2788                 AC_TRY_LINK([
  2789                   #define _GNU_SOURCE 1
  2790                   #include <pthread.h>
  2791                 ],[
  2792                   pthread_mutexattr_t attr;
  2793                   pthread_mutexattr_setkind_np(&attr, PTHREAD_MUTEX_RECURSIVE_NP);
  2794                 ],[
  2795                 has_recursive_mutexes=yes
  2796                 AC_DEFINE(SDL_THREAD_PTHREAD_RECURSIVE_MUTEX_NP, 1, [ ])
  2797                 ])
  2798             fi
  2799             AC_MSG_RESULT($has_recursive_mutexes)
  2800 
  2801             # Check to see if pthread semaphore support is missing
  2802             if test x$enable_pthread_sem = xyes; then
  2803                 AC_MSG_CHECKING(for pthread semaphores)
  2804                 have_pthread_sem=no
  2805                 AC_TRY_COMPILE([
  2806                   #include <pthread.h>
  2807                   #include <semaphore.h>
  2808                 ],[
  2809                 ],[
  2810                 have_pthread_sem=yes
  2811                 ])
  2812                 AC_MSG_RESULT($have_pthread_sem)
  2813             fi
  2814             if test x$have_pthread_sem = xyes; then
  2815                 AC_MSG_CHECKING(for sem_timedwait)
  2816                 have_sem_timedwait=no
  2817                 AC_TRY_LINK([
  2818                   #include <pthread.h>
  2819                   #include <semaphore.h>
  2820                 ],[
  2821                   sem_timedwait(NULL, NULL);
  2822                 ],[
  2823                 have_sem_timedwait=yes
  2824                 AC_DEFINE([HAVE_SEM_TIMEDWAIT], 1, [ ])
  2825                 ])
  2826                 AC_MSG_RESULT($have_sem_timedwait)
  2827             fi
  2828 
  2829             AC_CHECK_HEADER(pthread_np.h, have_pthread_np_h=yes, have_pthread_np_h=no, [ #include <pthread.h> ])
  2830             if test x$have_pthread_np_h = xyes; then
  2831                 AC_DEFINE(HAVE_PTHREAD_NP_H, 1, [ ])
  2832             fi
  2833 
  2834             # Check to see if pthread naming is available
  2835             AC_MSG_CHECKING(for pthread_setname_np)
  2836             AC_TRY_LINK_FUNC(pthread_setname_np, [
  2837               has_pthread_setname_np=yes
  2838               AC_DEFINE(HAVE_PTHREAD_SETNAME_NP, 1, [ ])
  2839             ],[
  2840               has_pthread_setname_np=no
  2841             ])
  2842             AC_MSG_RESULT($has_pthread_setname_np)
  2843 
  2844             AC_MSG_CHECKING(for pthread_set_name_np)
  2845             AC_TRY_LINK_FUNC(pthread_set_name_np, [
  2846               has_pthread_set_name_np=yes
  2847               AC_DEFINE(HAVE_PTHREAD_SET_NAME_NP, 1, [ ])
  2848             ],[
  2849               has_pthread_set_name_np=no
  2850             ])
  2851             AC_MSG_RESULT($has_pthread_set_name_np)
  2852 
  2853             # Restore the compiler flags and libraries
  2854             CFLAGS="$ac_save_cflags"; LIBS="$ac_save_libs"
  2855 
  2856             # Basic thread creation functions
  2857             SOURCES="$SOURCES $srcdir/src/thread/pthread/SDL_systhread.c"
  2858 
  2859             # Semaphores
  2860             # We can fake these with mutexes and condition variables if necessary
  2861             if test x$have_pthread_sem = xyes; then
  2862                 SOURCES="$SOURCES $srcdir/src/thread/pthread/SDL_syssem.c"
  2863             else
  2864                 SOURCES="$SOURCES $srcdir/src/thread/generic/SDL_syssem.c"
  2865             fi
  2866 
  2867             # Mutexes
  2868             # We can fake these with semaphores if necessary
  2869             SOURCES="$SOURCES $srcdir/src/thread/pthread/SDL_sysmutex.c"
  2870 
  2871             # Condition variables
  2872             # We can fake these with semaphores and mutexes if necessary
  2873             SOURCES="$SOURCES $srcdir/src/thread/pthread/SDL_syscond.c"
  2874 
  2875             # Thread local storage
  2876             SOURCES="$SOURCES $srcdir/src/thread/pthread/SDL_systls.c"
  2877 
  2878             have_threads=yes
  2879         fi
  2880     fi
  2881 }
  2882 
  2883 dnl Determine whether the compiler can produce Windows executables
  2884 CheckWINDOWS()
  2885 {
  2886     AC_MSG_CHECKING(Windows compiler)
  2887     have_win32_gcc=no
  2888     AC_TRY_COMPILE([
  2889      #include <windows.h>
  2890     ],[
  2891     ],[
  2892     have_win32_gcc=yes
  2893     ])
  2894     AC_MSG_RESULT($have_win32_gcc)
  2895     if test x$have_win32_gcc != xyes; then
  2896        AC_MSG_ERROR([
  2897 *** Your compiler ($CC) does not produce Windows executables!
  2898        ])
  2899     fi
  2900 
  2901     AC_MSG_CHECKING(Windows CE)
  2902     have_wince=no
  2903     AC_TRY_COMPILE([
  2904 #if !defined(_WIN32_WCE) && !defined(__MINGW32CE__)
  2905 #error This is not Windows CE
  2906 #endif
  2907     ],[
  2908     ],[
  2909     have_wince=yes
  2910        AC_MSG_ERROR([
  2911 *** Sorry, Windows CE is no longer supported.
  2912        ])
  2913     ])
  2914     AC_MSG_RESULT($have_wince)
  2915 
  2916     # This fixes Windows stack alignment with newer GCC
  2917     CheckStackBoundary
  2918 }
  2919 
  2920 dnl Find the DirectX includes and libraries
  2921 CheckDIRECTX()
  2922 {
  2923     AC_ARG_ENABLE(directx,
  2924 AC_HELP_STRING([--enable-directx], [use DirectX for Windows audio/video [[default=yes]]]),
  2925                   , enable_directx=yes)
  2926     if test x$enable_directx = xyes; then
  2927         AC_CHECK_HEADER(d3d9.h, have_d3d=yes)
  2928         AC_CHECK_HEADER(d3d11_1.h, have_d3d11=yes)
  2929         AC_CHECK_HEADER(ddraw.h, have_ddraw=yes)
  2930         AC_CHECK_HEADER(dsound.h, have_dsound=yes)
  2931         AC_CHECK_HEADER(dinput.h, have_dinput=yes)
  2932         AC_CHECK_HEADER(dxgi.h, have_dxgi=yes)
  2933         AC_CHECK_HEADER(xaudio2.h, have_xaudio2=yes)
  2934         AC_CHECK_HEADER(xinput.h, have_xinput=yes)
  2935         AC_CHECK_HEADER(mmdeviceapi.h, have_wasapi=yes)
  2936         AC_CHECK_HEADER(audioclient.h,,have_wasapi=no)
  2937         AC_TRY_COMPILE([
  2938 #include <windows.h>
  2939 #include <xinput.h>
  2940 XINPUT_GAMEPAD_EX x1;
  2941         ],[],[have_xinput_gamepadex=yes])
  2942         AC_TRY_COMPILE([
  2943 #include <windows.h>
  2944 #include <xinput.h>
  2945 XINPUT_STATE_EX s1;
  2946         ],[],[have_xinput_stateex=yes])
  2947 
  2948         if test x$have_ddraw = xyes; then
  2949             AC_DEFINE(HAVE_DDRAW_H, 1, [ ])
  2950         fi
  2951         if test x$have_dinput = xyes; then
  2952             AC_DEFINE(HAVE_DINPUT_H, 1, [ ])
  2953         fi
  2954         if test x$have_dsound = xyes; then
  2955             AC_DEFINE(HAVE_DSOUND_H, 1, [ ])
  2956         fi
  2957         if test x$have_dxgi = xyes; then
  2958             AC_DEFINE(HAVE_DXGI_H, 1, [ ])
  2959         fi
  2960         if test x$have_xinput = xyes; then
  2961             AC_DEFINE(HAVE_XINPUT_H, 1, [ ])
  2962         fi
  2963         if test x$have_xinput_gamepadex = xyes; then
  2964             AC_DEFINE(HAVE_XINPUT_GAMEPAD_EX, 1, [ ])
  2965         fi
  2966         if test x$have_xinput_stateex = xyes; then
  2967             AC_DEFINE(HAVE_XINPUT_STATE_EX, 1, [ ])
  2968         fi
  2969 
  2970         SUMMARY_video="${SUMMARY_video} directx"
  2971         SUMMARY_audio="${SUMMARY_audio} directx"
  2972 
  2973         # FIXME: latest Cygwin finds dinput headers, but we die on other win32 headers.
  2974         # FIXME:  ...so force it off for now.
  2975         case "$host" in
  2976             *-*-cygwin*)
  2977             have_dinput=false
  2978             ;;
  2979         esac
  2980     fi
  2981 }
  2982 
  2983 dnl Check for the dlfcn.h interface for dynamically loading objects
  2984 CheckDLOPEN()
  2985 {
  2986     AC_ARG_ENABLE(sdl-dlopen,
  2987 AC_HELP_STRING([--enable-sdl-dlopen], [use dlopen for shared object loading [[default=yes]]]),
  2988                   , enable_sdl_dlopen=yes)
  2989     if test x$enable_sdl_dlopen = xyes; then
  2990         AC_MSG_CHECKING(for dlopen)
  2991         have_dlopen=no
  2992         AC_TRY_COMPILE([
  2993          #include <dlfcn.h>
  2994         ],[
  2995          void *handle = dlopen("", RTLD_NOW);
  2996          const char *loaderror = (char *) dlerror();
  2997         ],[
  2998         have_dlopen=yes
  2999         ])
  3000         AC_MSG_RESULT($have_dlopen)
  3001 
  3002         if test x$have_dlopen = xyes; then
  3003             AC_CHECK_LIB(c, dlopen, EXTRA_LDFLAGS="$EXTRA_LDFLAGS",
  3004                AC_CHECK_LIB(dl, dlopen, EXTRA_LDFLAGS="$EXTRA_LDFLAGS -ldl",
  3005                   AC_CHECK_LIB(ltdl, dlopen, EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lltdl")))
  3006             AC_DEFINE(SDL_LOADSO_DLOPEN, 1, [ ])
  3007             SOURCES="$SOURCES $srcdir/src/loadso/dlopen/*.c"
  3008             have_loadso=yes
  3009         fi
  3010     fi
  3011 }
  3012 
  3013 dnl Check for the usbhid(3) library on *BSD
  3014 CheckUSBHID()
  3015 {
  3016     case "$host" in
  3017         *-*-*bsd*)
  3018             if test x$enable_joystick = xyes; then
  3019                 AC_CHECK_LIB(usbhid, hid_init, have_libusbhid=yes)
  3020                 if test x$have_libusbhid = xyes; then
  3021                     AC_CHECK_HEADER(usbhid.h, [USB_CFLAGS="-DHAVE_USBHID_H"])
  3022                     AC_CHECK_HEADER(libusbhid.h, [USB_CFLAGS="-DHAVE_LIBUSBHID_H"])
  3023                     USB_LIBS="$USB_LIBS -lusbhid"
  3024                 else
  3025                     AC_CHECK_HEADER(usb.h, [USB_CFLAGS="-DHAVE_USB_H"])
  3026                     AC_CHECK_HEADER(libusb.h, [USB_CFLAGS="-DHAVE_LIBUSB_H"])
  3027                     AC_CHECK_LIB(usb, hid_init, [USB_LIBS="$USB_LIBS -lusb"])
  3028                 fi
  3029                     
  3030                 save_CFLAGS="$CFLAGS"
  3031                 CFLAGS="$CFLAGS $USB_CFLAGS"
  3032 
  3033                 AC_MSG_CHECKING(for usbhid)
  3034                 have_usbhid=no
  3035                 AC_TRY_COMPILE([
  3036                   #include <sys/types.h>
  3037                   #if defined(HAVE_USB_H)
  3038                   #include <usb.h>
  3039                   #endif
  3040                   #ifdef __DragonFly__
  3041                   # include <bus/usb/usb.h>
  3042                   # include <bus/usb/usbhid.h>
  3043                   #else
  3044                   # include <dev/usb/usb.h>
  3045                   # include <dev/usb/usbhid.h>
  3046                   #endif
  3047                   #if defined(HAVE_USBHID_H)
  3048                   #include <usbhid.h>
  3049                   #elif defined(HAVE_LIBUSB_H)
  3050                   #include <libusb.h>
  3051                   #elif defined(HAVE_LIBUSBHID_H)
  3052                   #include <libusbhid.h>
  3053                   #endif
  3054                 ],[
  3055                   struct report_desc *repdesc;
  3056                   struct usb_ctl_report *repbuf;
  3057                   hid_kind_t hidkind;
  3058                 ],[
  3059                 have_usbhid=yes
  3060                 ])
  3061                 AC_MSG_RESULT($have_usbhid)
  3062 
  3063                 if test x$have_usbhid = xyes; then
  3064                     AC_MSG_CHECKING(for ucr_data member of usb_ctl_report)
  3065                     have_usbhid_ucr_data=no
  3066                     AC_TRY_COMPILE([
  3067                       #include <sys/types.h>
  3068                       #if defined(HAVE_USB_H)
  3069                       #include <usb.h>
  3070                       #endif
  3071                       #ifdef __DragonFly__
  3072                       # include <bus/usb/usb.h>
  3073                       # include <bus/usb/usbhid.h>
  3074                       #else
  3075                       # include <dev/usb/usb.h>
  3076                       # include <dev/usb/usbhid.h>
  3077                       #endif
  3078                       #if defined(HAVE_USBHID_H)
  3079                       #include <usbhid.h>
  3080                       #elif defined(HAVE_LIBUSB_H)
  3081                       #include <libusb.h>
  3082                       #elif defined(HAVE_LIBUSBHID_H)
  3083                       #include <libusbhid.h>
  3084                       #endif
  3085                     ],[
  3086                       struct usb_ctl_report buf;
  3087                       if (buf.ucr_data) { }
  3088                     ],[
  3089                     have_usbhid_ucr_data=yes
  3090                     ])
  3091                     if test x$have_usbhid_ucr_data = xyes; then
  3092                         USB_CFLAGS="$USB_CFLAGS -DUSBHID_UCR_DATA"
  3093                     fi
  3094                     AC_MSG_RESULT($have_usbhid_ucr_data)
  3095                     
  3096                     AC_MSG_CHECKING(for new usbhid API)
  3097                     have_usbhid_new=no
  3098                     AC_TRY_COMPILE([
  3099                       #include <sys/types.h>
  3100                       #if defined(HAVE_USB_H)
  3101                       #include <usb.h>
  3102                       #endif
  3103                       #ifdef __DragonFly__
  3104                       #include <bus/usb/usb.h>
  3105                       #include <bus/usb/usbhid.h>
  3106                       #else
  3107                       #include <dev/usb/usb.h>
  3108                       #include <dev/usb/usbhid.h>
  3109                       #endif
  3110                       #if defined(HAVE_USBHID_H)
  3111                       #include <usbhid.h>
  3112                       #elif defined(HAVE_LIBUSB_H)
  3113                       #include <libusb.h>
  3114                       #elif defined(HAVE_LIBUSBHID_H)
  3115                       #include <libusbhid.h>
  3116                       #endif
  3117                     ],[
  3118                       report_desc_t d;
  3119                       hid_start_parse(d, 1, 1);
  3120                     ],[
  3121                     have_usbhid_new=yes
  3122                     ])
  3123                     if test x$have_usbhid_new = xyes; then
  3124                         USB_CFLAGS="$USB_CFLAGS -DUSBHID_NEW"
  3125                     fi
  3126                     AC_MSG_RESULT($have_usbhid_new)
  3127 
  3128                     AC_MSG_CHECKING(for struct joystick in machine/joystick.h)
  3129                     have_machine_joystick=no
  3130                     AC_TRY_COMPILE([
  3131                       #include <machine/joystick.h>
  3132                     ],[
  3133                       struct joystick t;
  3134                     ],[
  3135                     have_machine_joystick=yes
  3136                     ])
  3137                     if test x$have_machine_joystick = xyes; then
  3138                         AC_DEFINE(SDL_JOYSTICK_USBHID_MACHINE_JOYSTICK_H, 1, [ ])
  3139                     fi
  3140                     AC_MSG_RESULT($have_machine_joystick)
  3141 
  3142                     AC_DEFINE(SDL_JOYSTICK_USBHID, 1, [ ])
  3143                     SOURCES="$SOURCES $srcdir/src/joystick/bsd/*.c"
  3144                     EXTRA_CFLAGS="$EXTRA_CFLAGS $USB_CFLAGS"
  3145                     EXTRA_LDFLAGS="$EXTRA_LDFLAGS $USB_LIBS"
  3146                     have_joystick=yes
  3147                 fi
  3148                 CFLAGS="$save_CFLAGS"
  3149             fi
  3150         ;;
  3151     esac
  3152 }
  3153 
  3154 dnl Check for clock_gettime()
  3155 CheckClockGettime()
  3156 {
  3157     AC_ARG_ENABLE(clock_gettime,
  3158 AC_HELP_STRING([--enable-clock_gettime], [use clock_gettime() instead of gettimeofday() on UNIX [[default=yes]]]),
  3159                   , enable_clock_gettime=yes)
  3160     if test x$enable_clock_gettime = xyes; then
  3161         AC_CHECK_LIB(rt, clock_gettime, have_clock_gettime=yes)
  3162         if test x$have_clock_gettime = xyes; then
  3163             AC_DEFINE(HAVE_CLOCK_GETTIME, 1, [ ])
  3164             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lrt"
  3165         else
  3166             AC_CHECK_LIB(c, clock_gettime, have_clock_gettime=yes)
  3167             if test x$have_clock_gettime = xyes; then
  3168                AC_DEFINE(HAVE_CLOCK_GETTIME, 1, [ ])
  3169                EXTRA_LDFLAGS="$EXTRA_LDFLAGS"
  3170             fi
  3171         fi
  3172     fi
  3173 }
  3174 
  3175 dnl Check for a valid linux/version.h
  3176 CheckLinuxVersion()
  3177 {
  3178     AC_CHECK_HEADER(linux/version.h, have_linux_version_h=yes)
  3179     if test x$have_linux_version_h = xyes; then
  3180         EXTRA_CFLAGS="$EXTRA_CFLAGS -DHAVE_LINUX_VERSION_H"
  3181     fi
  3182 }
  3183 
  3184 dnl Check if we want to use RPATH
  3185 CheckRPATH()
  3186 {
  3187     AC_ARG_ENABLE(rpath,
  3188 AC_HELP_STRING([--enable-rpath], [use an rpath when linking SDL [[default=yes]]]),
  3189                   , enable_rpath=yes)
  3190 }
  3191 
  3192 dnl Do this on all platforms, before everything else (other things might want to override it).
  3193 CheckWarnAll
  3194 
  3195 dnl Set up the configuration based on the host platform!
  3196 case "$host" in
  3197     *-*-linux*|*-*-uclinux*|*-*-gnu*|*-*-k*bsd*-gnu|*-*-bsdi*|*-*-freebsd*|*-*-dragonfly*|*-*-netbsd*|*-*-openbsd*|*-*-sysv5*|*-*-solaris*|*-*-hpux*|*-*-aix*|*-*-minix*|*-*-nto*)
  3198         case "$host" in
  3199             *-raspberry-linux*)
  3200                 # Raspberry Pi
  3201                 ARCH=linux
  3202                 RPI_CFLAGS="-I/opt/vc/include -I/opt/vc/include/interface/vcos/pthreads -I/opt/vc/include/interface/vmcs_host/linux"
  3203                 CFLAGS="$CFLAGS $RPI_CFLAGS"
  3204                 SDL_CFLAGS="$SDL_CFLAGS $RPI_CFLAGS"
  3205                 EXTRA_CFLAGS="$EXTRA_CFLAGS $RPI_CFLAGS"
  3206                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS -L/opt/vc/lib -lbcm_host -ldl"
  3207 
  3208                 if test x$enable_video = xyes; then
  3209                     SOURCES="$SOURCES $srcdir/src/video/raspberry/*.c"
  3210                     # FIXME: confdefs? Not AC_DEFINE?
  3211                     $as_echo "#define SDL_VIDEO_DRIVER_RPI 1" >>confdefs.h
  3212                     SUMMARY_video="${SUMMARY_video} rpi"
  3213                 fi
  3214                 ;;
  3215             *-*-androideabi*)
  3216                 # Android
  3217                 ARCH=android
  3218                 ANDROID_CFLAGS="-DGL_GLEXT_PROTOTYPES"
  3219                 CFLAGS="$CFLAGS $ANDROID_CFLAGS"
  3220                 SDL_CFLAGS="$SDL_CFLAGS $ANDROID_CFLAGS"
  3221                 SDL_LIBS="$SDL_LIBS -lSDL2main -Wl,-u,SDL_main_dummy"
  3222                 EXTRA_CFLAGS="$EXTRA_CFLAGS $ANDROID_CFLAGS"
  3223                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS -ldl -lGLESv1_CM -lGLESv2 -llog -landroid"
  3224                 SDLMAIN_SOURCES="$srcdir/src/main/android/*.c"
  3225 
  3226                 if test x$enable_video = xyes; then
  3227                     SOURCES="$SOURCES $srcdir/src/core/android/*.c $srcdir/src/video/android/*.c"
  3228                     # FIXME: confdefs? Not AC_DEFINE?
  3229                     $as_echo "#define SDL_VIDEO_DRIVER_ANDROID 1" >>confdefs.h
  3230                     SUMMARY_video="${SUMMARY_video} android"
  3231                 fi
  3232                 ;;
  3233             *-*-linux*)         ARCH=linux ;;
  3234             *-*-uclinux*)       ARCH=linux ;;
  3235             *-*-kfreebsd*-gnu)  ARCH=kfreebsd-gnu ;;
  3236             *-*-knetbsd*-gnu)   ARCH=knetbsd-gnu ;;
  3237             *-*-kopenbsd*-gnu)  ARCH=kopenbsd-gnu ;;
  3238             *-*-gnu*)           ARCH=gnu ;; # must be last of the gnu variants
  3239             *-*-bsdi*)          ARCH=bsdi ;;
  3240             *-*-freebsd*)       ARCH=freebsd ;;
  3241             *-*-dragonfly*)     ARCH=freebsd ;;
  3242             *-raspberry-netbsd*)
  3243                 # Raspberry Pi
  3244                 ARCH=netbsd
  3245                 RPI_CFLAGS="-I/usr/pkg/include -I/usr/pkg/include/interface/vcos/pthreads -I/usr/pkg/include/interface/vmcs_host/linux"
  3246                 CFLAGS="$CFLAGS $RPI_CFLAGS"
  3247                 SDL_CFLAGS="$SDL_CFLAGS $RPI_CFLAGS"
  3248                 EXTRA_CFLAGS="$EXTRA_CFLAGS $RPI_CFLAGS"
  3249                 EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-R/usr/pkg/lib -L/usr/pkg/lib -lbcm_host -ldl"
  3250 
  3251                 if test x$enable_video = xyes; then
  3252                     SOURCES="$SOURCES $srcdir/src/video/raspberry/*.c"
  3253                     $as_echo "#define SDL_VIDEO_DRIVER_RPI 1" >>confdefs.h
  3254                     SUMMARY_video="${SUMMARY_video} raspberry"
  3255                 fi
  3256                 ;;
  3257             *-*-netbsd*)        ARCH=netbsd ;;
  3258             *-*-openbsd*)       ARCH=openbsd ;;
  3259             *-*-sysv5*)         ARCH=sysv5 ;;
  3260             *-*-solaris*)       ARCH=solaris ;;
  3261             *-*-hpux*)          ARCH=hpux ;;
  3262             *-*-aix*)           ARCH=aix ;;
  3263             *-*-minix*)         ARCH=minix ;;
  3264             *-*-nto*)           ARCH=nto
  3265                 CheckQNXVideo
  3266                 ;;
  3267         esac
  3268         CheckVisibilityHidden
  3269         CheckDeclarationAfterStatement
  3270         CheckDummyVideo
  3271         CheckDiskAudio
  3272         CheckDummyAudio
  3273         CheckDLOPEN
  3274         CheckOSS
  3275         CheckALSA
  3276         CheckPulseAudio
  3277         CheckJACK
  3278         CheckARTSC
  3279         CheckESD
  3280         CheckNAS
  3281         CheckSNDIO
  3282         CheckFusionSound
  3283         CheckLibSampleRate
  3284         CheckX11
  3285         CheckDirectFB
  3286         CheckKMSDRM
  3287         CheckOpenGLX11
  3288         CheckOpenGLESX11
  3289         CheckVulkan
  3290         CheckMir
  3291         CheckWayland
  3292         CheckLibUDev
  3293         CheckDBus
  3294         CheckIME
  3295         CheckIBus
  3296         CheckFcitx
  3297         case $ARCH in
  3298           linux)
  3299               CheckInputEvents
  3300               CheckInputKD
  3301           ;;
  3302         esac
  3303         CheckTslib
  3304         CheckUSBHID
  3305         CheckPTHREAD
  3306         CheckClockGettime
  3307         CheckLinuxVersion
  3308         CheckRPATH
  3309         CheckVivanteVideo
  3310 
  3311         # Set up files for the audio library
  3312         if test x$enable_audio = xyes; then
  3313           case $ARCH in
  3314             sysv5|solaris|hpux)
  3315                 AC_DEFINE(SDL_AUDIO_DRIVER_SUNAUDIO, 1, [ ])
  3316                 SOURCES="$SOURCES $srcdir/src/audio/sun/*.c"
  3317                 SUMMARY_audio="${SUMMARY_audio} sun"
  3318                 have_audio=yes
  3319             ;;
  3320             netbsd)  # Don't use this on OpenBSD, it's busted.
  3321                 AC_DEFINE(SDL_AUDIO_DRIVER_NETBSD, 1, [ ])
  3322                 SOURCES="$SOURCES $srcdir/src/audio/netbsd/*.c"
  3323                 SUMMARY_audio="${SUMMARY_audio} netbsd"
  3324                 have_audio=yes
  3325             ;;
  3326             aix)
  3327                 AC_DEFINE(SDL_AUDIO_DRIVER_PAUDIO, 1, [ ])
  3328                 SOURCES="$SOURCES $srcdir/src/audio/paudio/*.c"
  3329                 SUMMARY_audio="${SUMMARY_audio} paudio"
  3330                 have_audio=yes
  3331             ;;
  3332             android)
  3333                 AC_DEFINE(SDL_AUDIO_DRIVER_ANDROID, 1, [ ])
  3334                 SOURCES="$SOURCES $srcdir/src/audio/android/*.c"
  3335                 SUMMARY_audio="${SUMMARY_audio} android"
  3336                 have_audio=yes
  3337             ;;
  3338             nto)
  3339                 CheckQNXAudio
  3340             ;;
  3341           esac
  3342         fi
  3343         # Set up files for the joystick library
  3344         if test x$enable_joystick = xyes; then
  3345           case $ARCH in
  3346             linux)
  3347                 AC_DEFINE(SDL_JOYSTICK_LINUX, 1, [ ])
  3348                 SOURCES="$SOURCES $srcdir/src/joystick/linux/*.c"
  3349                 have_joystick=yes
  3350             ;;
  3351             android)
  3352                 AC_DEFINE(SDL_JOYSTICK_ANDROID, 1, [ ])
  3353                 SOURCES="$SOURCES $srcdir/src/joystick/android/*.c"
  3354                 have_joystick=yes
  3355             ;;
  3356           esac
  3357         fi
  3358         # Set up files for the haptic library
  3359         if test x$enable_haptic = xyes; then
  3360            if test x$use_input_events = xyes; then
  3361              case $ARCH in
  3362                linux)
  3363                    AC_DEFINE(SDL_HAPTIC_LINUX, 1, [ ])
  3364                    SOURCES="$SOURCES $srcdir/src/haptic/linux/*.c"
  3365                    have_haptic=yes
  3366                ;;
  3367              esac
  3368            fi
  3369         fi
  3370         # Set up files for the power library
  3371         if test x$enable_power = xyes; then
  3372              case $ARCH in
  3373                linux)
  3374                    AC_DEFINE(SDL_POWER_LINUX, 1, [ ])
  3375                    SOURCES="$SOURCES $srcdir/src/power/linux/*.c"
  3376                    have_power=yes
  3377                ;;
  3378                android)
  3379                    AC_DEFINE(SDL_POWER_ANDROID, 1, [ ])
  3380                    SOURCES="$SOURCES $srcdir/src/power/android/*.c"
  3381                    have_power=yes
  3382                ;;
  3383              esac
  3384         fi
  3385         # Set up files for the filesystem library
  3386         if test x$enable_filesystem = xyes; then
  3387              case $ARCH in
  3388                android)
  3389                    AC_DEFINE(SDL_FILESYSTEM_ANDROID, 1, [ ])
  3390                    SOURCES="$SOURCES $srcdir/src/filesystem/android/*.c"
  3391                    have_filesystem=yes
  3392                ;;
  3393                *)
  3394                    AC_DEFINE(SDL_FILESYSTEM_UNIX, 1, [ ])
  3395                    SOURCES="$SOURCES $srcdir/src/filesystem/unix/*.c"
  3396                    have_filesystem=yes
  3397                ;;
  3398              esac
  3399         fi
  3400         # Set up files for the timer library
  3401         if test x$enable_timers = xyes; then
  3402             AC_DEFINE(SDL_TIMER_UNIX, 1, [ ])
  3403             SOURCES="$SOURCES $srcdir/src/timer/unix/*.c"
  3404             have_timers=yes
  3405         fi
  3406         # Set up files for udev hotplugging support
  3407         if test x$enable_libudev = xyes && test x$have_libudev_h_hdr = xyes; then
  3408             SOURCES="$SOURCES $srcdir/src/core/linux/SDL_udev.c"               
  3409         fi
  3410         # Set up files for evdev input
  3411         if test x$use_input_events = xyes; then
  3412             SOURCES="$SOURCES $srcdir/src/core/linux/SDL_evdev*.c"
  3413         fi       
  3414         # Set up other core UNIX files
  3415         SOURCES="$SOURCES $srcdir/src/core/unix/*.c"
  3416         ;;
  3417     *-*-cygwin* | *-*-mingw32*)
  3418         ARCH=win32
  3419         if test "$build" != "$host"; then # cross-compiling
  3420             # Default cross-compile location
  3421             ac_default_prefix=/usr/local/cross-tools/$host
  3422         else
  3423             # Look for the location of the tools and install there
  3424             if test "$BUILD_PREFIX" != ""; then
  3425                 ac_default_prefix=$BUILD_PREFIX
  3426             fi
  3427         fi
  3428         CheckDeclarationAfterStatement
  3429         CheckDummyVideo
  3430         CheckDiskAudio
  3431         CheckDummyAudio
  3432         CheckWINDOWS
  3433         CheckWINDOWSGL
  3434         CheckWINDOWSGLES
  3435         CheckVulkan
  3436         CheckDIRECTX
  3437 
  3438         # Set up the core platform files
  3439         SOURCES="$SOURCES $srcdir/src/core/windows/*.c"
  3440 
  3441         # Set up files for the video library
  3442         if test x$enable_video = xyes; then
  3443             AC_DEFINE(SDL_VIDEO_DRIVER_WINDOWS, 1, [ ])
  3444             SOURCES="$SOURCES $srcdir/src/video/windows/*.c"
  3445             have_video=yes
  3446             AC_ARG_ENABLE(render-d3d,
  3447 AC_HELP_STRING([--enable-render-d3d], [enable the Direct3D render driver [[default=yes]]]),
  3448                                 , enable_render_d3d=yes)
  3449             if test x$enable_render_d3d = xyes -a x$have_d3d = xyes; then
  3450                 AC_DEFINE(SDL_VIDEO_RENDER_D3D, 1, [ ])
  3451             fi
  3452             if test x$enable_render_d3d = xyes -a x$have_d3d11 = xyes; then
  3453                 AC_DEFINE(SDL_VIDEO_RENDER_D3D11, 1, [ ])
  3454             fi
  3455         fi
  3456         # Set up files for the audio library
  3457         if test x$enable_audio = xyes; then
  3458             AC_DEFINE(SDL_AUDIO_DRIVER_WINMM, 1, [ ])
  3459             SOURCES="$SOURCES $srcdir/src/audio/winmm/*.c"
  3460             if test x$have_dsound = xyes; then
  3461                 AC_DEFINE(SDL_AUDIO_DRIVER_DSOUND, 1, [ ])
  3462                 SOURCES="$SOURCES $srcdir/src/audio/directsound/*.c"
  3463             fi
  3464             if test x$have_xaudio2 = xyes; then
  3465                 AC_DEFINE(SDL_AUDIO_DRIVER_XAUDIO2, 1, [ ])
  3466                 SOURCES="$SOURCES $srcdir/src/audio/xaudio2/*.c"
  3467             fi
  3468             if test x$have_wasapi = xyes; then
  3469                 AC_DEFINE(SDL_AUDIO_DRIVER_WASAPI, 1, [ ])
  3470                 SOURCES="$SOURCES $srcdir/src/audio/wasapi/*.c"
  3471             fi
  3472             have_audio=yes
  3473         fi
  3474         # Set up files for the joystick library
  3475         if test x$enable_joystick = xyes; then
  3476             if test x$have_dinput = xyes -o x$have_xinput = xyes; then
  3477                 if test x$have_xinput = xyes; then
  3478                     AC_DEFINE(SDL_JOYSTICK_XINPUT, 1, [ ])
  3479                 fi
  3480                 if test x$have_dinput = xyes; then
  3481                     AC_DEFINE(SDL_JOYSTICK_DINPUT, 1, [ ])
  3482                     EXTRA_LDFLAGS="$EXTRA_LDFLAGS -ldinput8 -ldxguid -ldxerr8"
  3483                 fi
  3484             else
  3485                 AC_DEFINE(SDL_JOYSTICK_WINMM, 1, [ ])
  3486             fi
  3487             SOURCES="$SOURCES $srcdir/src/joystick/windows/*.c"
  3488             have_joystick=yes
  3489         fi
  3490         if test x$enable_haptic = xyes; then
  3491             if test x$have_dinput = xyes -o x$have_xinput = xyes; then
  3492                 if test x$have_xinput = xyes; then
  3493                     AC_DEFINE(SDL_HAPTIC_XINPUT, 1, [ ])
  3494                 fi
  3495                 if test x$have_dinput = xyes; then
  3496                     AC_DEFINE(SDL_HAPTIC_DINPUT, 1, [ ])
  3497                 fi
  3498                 SOURCES="$SOURCES $srcdir/src/haptic/windows/*.c"
  3499                 have_haptic=yes
  3500             fi
  3501         fi
  3502         if test x$enable_power = xyes; then
  3503             AC_DEFINE(SDL_POWER_WINDOWS, 1, [ ])
  3504             SOURCES="$SOURCES $srcdir/src/power/windows/SDL_syspower.c"
  3505             have_power=yes
  3506         fi
  3507         if test x$enable_filesystem = xyes; then
  3508             AC_DEFINE(SDL_FILESYSTEM_WINDOWS, 1, [ ])
  3509             SOURCES="$SOURCES $srcdir/src/filesystem/windows/SDL_sysfilesystem.c"
  3510             have_filesystem=yes
  3511         fi
  3512         # Set up files for the thread library
  3513         if test x$enable_threads = xyes; then
  3514             AC_DEFINE(SDL_THREAD_WINDOWS, 1, [ ])
  3515             SOURCES="$SOURCES $srcdir/src/thread/windows/*.c"
  3516             SOURCES="$SOURCES $srcdir/src/thread/generic/SDL_syscond.c"
  3517             have_threads=yes
  3518         fi
  3519         # Set up files for the timer library
  3520         if test x$enable_timers = xyes; then
  3521             AC_DEFINE(SDL_TIMER_WINDOWS, 1, [ ])
  3522             SOURCES="$SOURCES $srcdir/src/timer/windows/*.c"
  3523             have_timers=yes
  3524         fi
  3525         # Set up files for the shared object loading library
  3526         if test x$enable_loadso = xyes; then
  3527             AC_DEFINE(SDL_LOADSO_WINDOWS, 1, [ ])
  3528             SOURCES="$SOURCES $srcdir/src/loadso/windows/*.c"
  3529             have_loadso=yes
  3530         fi
  3531         # Set up the system libraries we need
  3532         if test -f /lib/w32api/libuuid.a; then
  3533             LIBUUID=/lib/w32api/libuuid.a
  3534         else
  3535             LIBUUID=-luuid
  3536         fi
  3537         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -luser32 -lgdi32 -lwinmm -limm32 -lole32 -loleaut32 -lshell32 -lversion $LIBUUID -static-libgcc"
  3538         # The Windows platform requires special setup
  3539         VERSION_SOURCES="$srcdir/src/main/windows/*.rc"
  3540         SDLMAIN_SOURCES="$srcdir/src/main/windows/*.c"
  3541         SDL_CFLAGS="$SDL_CFLAGS -Dmain=SDL_main"
  3542         SDL_LIBS="-lSDL2main $SDL_LIBS -mwindows"
  3543 
  3544         # Check to see if this is a mingw or cygwin build
  3545         have_mingw32=
  3546         AC_CHECK_LIB(mingw32, main, [have_mingw32=yes])
  3547         if test x$have_mingw32 = xyes; then
  3548             SDL_LIBS="-lmingw32 $SDL_LIBS"
  3549         else
  3550             SDL_LIBS="-lcygwin $SDL_LIBS"
  3551         fi
  3552         ;;
  3553 
  3554     dnl BeOS support removed after SDL 2.0.1. Haiku still works.  --ryan.
  3555     *-*-beos*)
  3556         AC_MSG_ERROR([
  3557 *** BeOS support has been removed as of SDL 2.0.2.
  3558         ])
  3559         ;;
  3560 
  3561     *-*-haiku*)
  3562         ARCH=haiku
  3563         ac_default_prefix=/boot/system
  3564         CheckDummyVideo
  3565         CheckDiskAudio
  3566         CheckDummyAudio
  3567         CheckDLOPEN
  3568         CheckHaikuVideo
  3569         CheckHaikuGL
  3570         CheckPTHREAD
  3571 
  3572         # Set up files for the audio library
  3573         if test x$enable_audio = xyes; then
  3574             AC_DEFINE(SDL_AUDIO_DRIVER_HAIKU, 1, [ ])
  3575             SOURCES="$SOURCES $srcdir/src/audio/haiku/*.cc"
  3576             SUMMARY_audio="${SUMMARY_audio} haiku"
  3577             have_audio=yes
  3578         fi
  3579         # Set up files for the joystick library
  3580         if test x$enable_joystick = xyes; then
  3581             AC_DEFINE(SDL_JOYSTICK_HAIKU, 1, [ ])
  3582             SOURCES="$SOURCES $srcdir/src/joystick/haiku/*.cc"
  3583             have_joystick=yes
  3584         fi
  3585         # Set up files for the timer library
  3586         if test x$enable_timers = xyes; then
  3587             AC_DEFINE(SDL_TIMER_HAIKU, 1, [ ])
  3588             SOURCES="$SOURCES $srcdir/src/timer/haiku/*.c"
  3589             have_timers=yes
  3590         fi
  3591         # Set up files for the system power library
  3592         if test x$enable_power = xyes; then
  3593             AC_DEFINE(SDL_POWER_HAIKU, 1, [ ])
  3594             SOURCES="$SOURCES $srcdir/src/power/haiku/*.c"
  3595             have_power=yes
  3596         fi
  3597         # Set up files for the system filesystem library
  3598         if test x$enable_filesystem = xyes; then
  3599             AC_DEFINE(SDL_FILESYSTEM_HAIKU, 1, [ ])
  3600             SOURCES="$SOURCES $srcdir/src/filesystem/haiku/*.cc"
  3601             have_filesystem=yes
  3602         fi
  3603         # The Haiku platform requires special setup.
  3604         SOURCES="$srcdir/src/main/haiku/*.cc $SOURCES"
  3605         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lroot -lbe -lmedia -lgame -ldevice -ltextencoding"
  3606         # Haiku's x86 spins use libstdc++.r4.so (for binary compat?), but
  3607         #  other spins, like x86-64, use a more standard "libstdc++.so.*"
  3608         AC_CHECK_FILE("/boot/system/lib/libstdc++.r4.so", EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lstdc++.r4", EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lstdc++")
  3609         ;;
  3610     arm*-apple-darwin*|*-ios-*)
  3611         ARCH=ios
  3612 
  3613         CheckVisibilityHidden
  3614         CheckDeclarationAfterStatement
  3615         CheckDummyVideo
  3616         CheckDiskAudio
  3617         CheckDummyAudio
  3618         CheckDLOPEN
  3619         CheckPTHREAD
  3620         CheckVulkan
  3621 
  3622         # Set up files for the audio library
  3623         if test x$enable_audio = xyes; then
  3624             AC_DEFINE(SDL_AUDIO_DRIVER_COREAUDIO, 1, [ ])
  3625             SOURCES="$SOURCES $srcdir/src/audio/coreaudio/*.m"
  3626             SUMMARY_audio="${SUMMARY_audio} coreaudio"
  3627             have_audio=yes
  3628         fi
  3629         # Set up files for the joystick library
  3630         if test x$enable_joystick = xyes; then
  3631             AC_DEFINE(SDL_JOYSTICK_MFI, 1, [ ])
  3632             SOURCES="$SOURCES $srcdir/src/joystick/iphoneos/*.m"
  3633             have_joystick=yes
  3634         fi
  3635         # Set up files for the haptic library
  3636         #if test x$enable_haptic = xyes; then
  3637         #    SOURCES="$SOURCES $srcdir/src/haptic/darwin/*.c"
  3638         #    have_haptic=yes
  3639         #    EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,ForceFeedback"
  3640         #fi
  3641         # Set up files for the power library
  3642         if test x$enable_power = xyes; then
  3643             AC_DEFINE(SDL_POWER_UIKIT, 1, [ ])
  3644             SOURCES="$SOURCES $srcdir/src/power/uikit/*.m"
  3645             have_power=yes
  3646         fi
  3647         # Set up files for the filesystem library
  3648         if test x$enable_filesystem = xyes; then
  3649             SOURCES="$SOURCES $srcdir/src/filesystem/cocoa/*.m"
  3650             have_filesystem=yes
  3651         fi
  3652         # Set up additional files for the file library
  3653         if test x$enable_file = xyes; then
  3654             AC_DEFINE(SDL_FILESYSTEM_COCOA, 1, [ ])
  3655             SOURCES="$SOURCES $srcdir/src/file/cocoa/*.m"
  3656         fi
  3657         # Set up files for the timer library
  3658         if test x$enable_timers = xyes; then
  3659             AC_DEFINE(SDL_TIMER_UNIX, 1, [ ])
  3660             SOURCES="$SOURCES $srcdir/src/timer/unix/*.c"
  3661             have_timers=yes
  3662         fi
  3663         # Set up other core UNIX files
  3664         SOURCES="$SOURCES $srcdir/src/core/unix/*.c"
  3665         # The iOS platform requires special setup.
  3666         AC_DEFINE(SDL_VIDEO_DRIVER_UIKIT, 1, [ ])
  3667         AC_DEFINE(SDL_VIDEO_OPENGL_ES2, 1, [ ])
  3668         AC_DEFINE(SDL_VIDEO_OPENGL_ES, 1, [ ])
  3669         AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES, 1, [ ])
  3670         AC_DEFINE(SDL_VIDEO_RENDER_OGL_ES2, 1, [ ])
  3671         SOURCES="$SOURCES $srcdir/src/video/uikit/*.m"
  3672         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lm -liconv -lobjc"
  3673         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,AVFoundation"
  3674         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,AudioToolbox"
  3675         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,CoreAudio"
  3676         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,CoreGraphics"
  3677         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,CoreMotion"
  3678         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,Foundation"
  3679         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,GameController"
  3680         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,OpenGLES"
  3681         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,QuartzCore"
  3682         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,UIKit"
  3683         if test x$ac_cv_header_vulkan_vulkan_h = xyes; then
  3684             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,QuartzCore"
  3685         fi
  3686         ;;
  3687     *-*-darwin* )
  3688         # This could be either full "Mac OS X", or plain "Darwin" which is
  3689         # just the OS X kernel sans upper layers like Carbon and Cocoa.
  3690         # Next line is broken, and a few files below require Mac OS X (full)
  3691         ARCH=macosx
  3692 
  3693         # Mac OS X builds with both the Carbon and OSX APIs at the moment
  3694         EXTRA_CFLAGS="$EXTRA_CFLAGS -DTARGET_API_MAC_CARBON"
  3695         EXTRA_CFLAGS="$EXTRA_CFLAGS -DTARGET_API_MAC_OSX"
  3696 
  3697         CheckVisibilityHidden
  3698         CheckDeclarationAfterStatement
  3699         CheckDummyVideo
  3700         CheckDiskAudio
  3701         CheckDummyAudio
  3702         CheckDLOPEN
  3703         CheckCOCOA
  3704         CheckX11
  3705         CheckMacGL
  3706         CheckOpenGLX11
  3707         CheckVulkan
  3708         CheckPTHREAD
  3709 
  3710         # Set up files for the audio library
  3711         if test x$enable_audio = xyes; then
  3712             AC_DEFINE(SDL_AUDIO_DRIVER_COREAUDIO, 1, [ ])
  3713             SOURCES="$SOURCES $srcdir/src/audio/coreaudio/*.m"
  3714             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,CoreAudio -Wl,-framework,AudioToolbox"
  3715             SUMMARY_audio="${SUMMARY_audio} coreaudio"
  3716             have_audio=yes
  3717         fi
  3718         # Set up files for the joystick library
  3719         if test x$enable_joystick = xyes; then
  3720             AC_DEFINE(SDL_JOYSTICK_IOKIT, 1, [ ])
  3721             SOURCES="$SOURCES $srcdir/src/joystick/darwin/*.c"
  3722             have_joystick=yes
  3723         fi
  3724         # Set up files for the haptic library
  3725         if test x$enable_haptic = xyes; then
  3726             AC_DEFINE(SDL_HAPTIC_IOKIT, 1, [ ])
  3727             SOURCES="$SOURCES $srcdir/src/haptic/darwin/*.c"
  3728             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,ForceFeedback"
  3729             have_haptic=yes
  3730         fi
  3731         # Set up files for the power library
  3732         if test x$enable_power = xyes; then
  3733             AC_DEFINE(SDL_POWER_MACOSX, 1, [ ])
  3734             SOURCES="$SOURCES $srcdir/src/power/macosx/*.c"
  3735             have_power=yes
  3736         fi
  3737         # Set up files for the filesystem library
  3738         if test x$enable_filesystem = xyes; then
  3739             AC_DEFINE(SDL_FILESYSTEM_COCOA, 1, [ ])
  3740             SOURCES="$SOURCES $srcdir/src/filesystem/cocoa/*.m"
  3741             have_filesystem=yes
  3742         fi
  3743         # Set up files for the timer library
  3744         if test x$enable_timers = xyes; then
  3745             AC_DEFINE(SDL_TIMER_UNIX, 1, [ ])
  3746             SOURCES="$SOURCES $srcdir/src/timer/unix/*.c"
  3747             have_timers=yes
  3748         fi
  3749         # Set up additional files for the file library
  3750         if test x$enable_file = xyes; then
  3751             SOURCES="$SOURCES $srcdir/src/file/cocoa/*.m"
  3752         fi
  3753         # Set up other core UNIX files
  3754         SOURCES="$SOURCES $srcdir/src/core/unix/*.c"
  3755         # The Mac OS X platform requires special setup.
  3756         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lobjc"
  3757         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,CoreVideo"
  3758         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,Cocoa"
  3759         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,Carbon"
  3760         EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,IOKit"
  3761         if test x$ac_cv_header_vulkan_vulkan_h = xyes; then
  3762             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,QuartzCore"
  3763         fi
  3764         ;;
  3765     *-nacl|*-pnacl)
  3766         ARCH=nacl
  3767         CheckNativeClient
  3768         CheckDummyAudio
  3769         CheckDummyVideo
  3770         CheckInputEvents
  3771         CheckPTHREAD
  3772         
  3773         # Set up files for the timer library
  3774         if test x$enable_timers = xyes; then
  3775             AC_DEFINE(SDL_TIMER_UNIX, 1, [ ])
  3776             SOURCES="$SOURCES $srcdir/src/timer/unix/*.c"
  3777             have_timers=yes
  3778         fi
  3779         
  3780         if test x$enable_filesystem = xyes; then
  3781             AC_DEFINE(SDL_FILESYSTEM_NACL, 1, [ ])
  3782             SOURCES="$SOURCES $srcdir/src/filesystem/nacl/*.c"
  3783             have_filesystem=yes
  3784         fi
  3785         ;;
  3786     *-*-emscripten* )
  3787         if test x$enable_video = xyes; then
  3788             AC_DEFINE(SDL_VIDEO_DRIVER_EMSCRIPTEN, 1, [ ])
  3789             SOURCES="$SOURCES $srcdir/src/video/emscripten/*.c"
  3790             have_video=yes
  3791             SUMMARY_video="${SUMMARY_video} emscripten"
  3792         fi
  3793 
  3794         if test x$enable_audio = xyes; then
  3795             AC_DEFINE(SDL_AUDIO_DRIVER_EMSCRIPTEN, 1, [ ])
  3796             SOURCES="$SOURCES $srcdir/src/audio/emscripten/*.c"
  3797             have_audio=yes
  3798             SUMMARY_audio="${SUMMARY_audio} emscripten"
  3799         fi
  3800 
  3801         CheckVisibilityHidden
  3802         CheckDeclarationAfterStatement
  3803         CheckDummyVideo
  3804         CheckDiskAudio
  3805         CheckDummyAudio
  3806         CheckDLOPEN
  3807         CheckClockGettime
  3808         CheckEmscriptenGLES
  3809 
  3810          # Set up files for the power library
  3811         if test x$enable_power = xyes; then
  3812             AC_DEFINE(SDL_POWER_EMSCRIPTEN, 1, [ ])
  3813             SOURCES="$SOURCES $srcdir/src/power/emscripten/*.c"
  3814             have_power=yes
  3815         fi
  3816         
  3817         # Set up files for the power library
  3818         if test x$enable_joystick = xyes; then
  3819             AC_DEFINE(SDL_JOYSTICK_EMSCRIPTEN, 1, [ ])
  3820             SOURCES="$SOURCES $srcdir/src/joystick/emscripten/*.c"
  3821             have_joystick=yes
  3822         fi
  3823 
  3824         # Set up files for the filesystem library
  3825         if test x$enable_filesystem = xyes; then
  3826             AC_DEFINE(SDL_FILESYSTEM_EMSCRIPTEN, 1, [ ])
  3827             SOURCES="$SOURCES $srcdir/src/filesystem/emscripten/*.c"
  3828             have_filesystem=yes
  3829         fi
  3830         # Set up files for the timer library
  3831         if test x$enable_timers = xyes; then
  3832             AC_DEFINE(SDL_TIMER_UNIX, 1, [ ])
  3833             SOURCES="$SOURCES $srcdir/src/timer/unix/*.c"
  3834             have_timers=yes
  3835         fi
  3836         ;;
  3837     *)
  3838         AC_MSG_ERROR([
  3839 *** Unsupported host:  Please add to configure.in
  3840         ])
  3841         ;;
  3842 esac
  3843 
  3844 # Verify that we have all the platform specific files we need
  3845 
  3846 if test x$have_joystick != xyes; then
  3847     if test x$enable_joystick = xyes; then
  3848         AC_DEFINE(SDL_JOYSTICK_DISABLED, 1, [ ])
  3849     fi
  3850     SOURCES="$SOURCES $srcdir/src/joystick/dummy/*.c"
  3851 fi
  3852 if test x$have_haptic != xyes; then
  3853     if test x$enable_haptic = xyes; then
  3854         AC_DEFINE(SDL_HAPTIC_DISABLED, 1, [ ])
  3855     fi
  3856     SOURCES="$SOURCES $srcdir/src/haptic/dummy/*.c"
  3857 fi
  3858 if test x$have_threads != xyes; then
  3859     if test x$enable_threads = xyes; then
  3860         AC_DEFINE(SDL_THREADS_DISABLED, 1, [ ])
  3861     fi
  3862     SOURCES="$SOURCES $srcdir/src/thread/generic/*.c"
  3863 fi
  3864 if test x$have_timers != xyes; then
  3865     if test x$enable_timers = xyes; then
  3866         AC_DEFINE(SDL_TIMERS_DISABLED, 1, [ ])
  3867     fi
  3868     SOURCES="$SOURCES $srcdir/src/timer/dummy/*.c"
  3869 fi
  3870 if test x$have_filesystem != xyes; then
  3871     if test x$enable_filesystem = xyes; then
  3872         AC_DEFINE(SDL_FILESYSTEM_DISABLED, 1, [ ])
  3873     fi
  3874     SOURCES="$SOURCES $srcdir/src/filesystem/dummy/*.c"
  3875 fi
  3876 if test x$have_loadso != xyes; then
  3877     if test x$enable_loadso = xyes; then
  3878         AC_DEFINE(SDL_LOADSO_DISABLED, 1, [ ])
  3879     fi
  3880     SOURCES="$SOURCES $srcdir/src/loadso/dummy/*.c"
  3881 fi
  3882 if test x$SDLMAIN_SOURCES = x; then
  3883     SDLMAIN_SOURCES="$srcdir/src/main/dummy/*.c"
  3884 fi
  3885 SDLTEST_SOURCES="$srcdir/src/test/*.c"
  3886 
  3887 if test x$video_wayland = xyes; then
  3888     WAYLAND_CORE_PROTOCOL_SOURCE='$(gen)/wayland-protocol.c'
  3889     WAYLAND_CORE_PROTOCOL_HEADER='$(gen)/wayland-client-protocol.h'
  3890     WAYLAND_PROTOCOLS_UNSTABLE_SOURCES=`echo $WAYLAND_PROTOCOLS_UNSTABLE |\
  3891         sed 's,[[^ ]]\+,\\$(gen)/&-protocol.c,g'`
  3892     WAYLAND_PROTOCOLS_UNSTABLE_HEADERS=`echo $WAYLAND_PROTOCOLS_UNSTABLE |\
  3893         sed 's,[[^ ]]\+,\\$(gen)/&-client-protocol.h,g'`
  3894     GEN_SOURCES="$GEN_SOURCES $WAYLAND_CORE_PROTOCOL_SOURCE $WAYLAND_PROTOCOLS_UNSTABLE_SOURCES"
  3895     GEN_HEADERS="$GEN_HEADERS $WAYLAND_CORE_PROTOCOL_HEADER $WAYLAND_PROTOCOLS_UNSTABLE_HEADERS"
  3896 
  3897     WAYLAND_CORE_PROTOCOL_SOURCE_DEPENDS="
  3898 $WAYLAND_CORE_PROTOCOL_SOURCE: $WAYLAND_CORE_PROTOCOL_DIR/wayland.xml
  3899 	\$(SHELL) \$(auxdir)/mkinstalldirs \$(gen)
  3900 	\$(RUN_CMD_GEN)\$(WAYLAND_SCANNER) code \$< \$@"
  3901 
  3902     WAYLAND_CORE_PROTOCOL_HEADER_DEPENDS="
  3903 $WAYLAND_CORE_PROTOCOL_HEADER: $WAYLAND_CORE_PROTOCOL_DIR/wayland.xml
  3904 	\$(SHELL) \$(auxdir)/mkinstalldirs \$(gen)
  3905 	\$(RUN_CMD_GEN)\$(WAYLAND_SCANNER) client-header \$< \$@"
  3906 
  3907     WAYLAND_CORE_PROTOCOL_OBJECT="
  3908 \$(objects)/`echo $WAYLAND_CORE_PROTOCOL_SOURCE | sed 's/\$(gen)\/\(.*\).c$/\1.lo/'`: $WAYLAND_CORE_PROTOCOL_SOURCE
  3909 	\$(RUN_CMD_CC)\$(LIBTOOL) --tag=CC --mode=compile \$(CC) \$(CFLAGS) \$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \$< -o \$@"
  3910 
  3911     WAYLAND_PROTOCOLS_CLIENT_HEADER_UNSTABLE_DEPENDS=`for p in $WAYLAND_PROTOCOLS_UNSTABLE;\
  3912         do echo ; echo \$p | sed\
  3913         "s,^\\([[a-z\\-]]\\+\\)-unstable-\\(v[[0-9]]\+\\)\$,\\$(gen)/&-client-protocol.h: $WAYLAND_PROTOCOLS_DIR/unstable/\1/&.xml\\\\
  3914 	\\$(SHELL) \\$(auxdir)/mkinstalldirs \\$(gen)\\\\
  3915 	\\$(RUN_CMD_GEN)\\$(WAYLAND_SCANNER) client-header \\$< \\$@," ; done`
  3916 
  3917     WAYLAND_PROTOCOLS_CODE_UNSTABLE_DEPENDS=`for p in $WAYLAND_PROTOCOLS_UNSTABLE;\
  3918         do echo ; echo \$p | sed\
  3919         "s,^\\([[a-z\\-]]\\+\\)-unstable-\\(v[[0-9]]\+\\)\$,\\$(gen)/&-protocol.c: $WAYLAND_PROTOCOLS_DIR/unstable/\1/&.xml\\\\
  3920 	\\$(SHELL) \\$(auxdir)/mkinstalldirs \\$(gen)\\\\
  3921 	\\$(RUN_CMD_GEN)\\$(WAYLAND_SCANNER) code \\$< \\$@," ; done`
  3922 
  3923     WAYLAND_PROTOCOLS_OBJECTS_UNSTABLE=`for p in $WAYLAND_PROTOCOLS_UNSTABLE;\
  3924         do echo ; echo \$p | sed\
  3925         "s,^\\([[a-z\\-]]\\+\\)-unstable-\\(v[[0-9]]\+\\)\$,\\\$(objects)/&-protocol.lo: \\$(gen)/&-protocol.c \\$(gen)/&-client-protocol.h\\\\
  3926 	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@," ; done`
  3927 
  3928     WAYLAND_PROTOCOLS_DEPENDS="
  3929 $WAYLAND_CORE_PROTOCOL_SOURCE_DEPENDS
  3930 $WAYLAND_CORE_PROTOCOL_HEADER_DEPENDS
  3931 $WAYLAND_CORE_PROTOCOL_OBJECT
  3932 $WAYLAND_PROTOCOLS_CLIENT_HEADER_UNSTABLE_DEPENDS
  3933 $WAYLAND_PROTOCOLS_CODE_UNSTABLE_DEPENDS
  3934 $WAYLAND_PROTOCOLS_OBJECTS_UNSTABLE
  3935 "
  3936 fi
  3937 
  3938 OBJECTS=`echo $SOURCES`
  3939 DEPENDS=`echo $SOURCES | tr ' ' '\n'`
  3940 for EXT in asm cc m c S; do
  3941     OBJECTS=`echo "$OBJECTS" | sed 's,[[^ ]]*/\([[^ ]]*\)\.'$EXT',$(objects)/\1.lo,g'`
  3942     DEPENDS=`echo "$DEPENDS" | sed "s,^\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.$EXT\\$,\\\\
  3943 \\$(objects)/\\2.lo: \\1/\\2.$EXT\\\\
  3944 	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@,g"`
  3945 done
  3946 
  3947 GEN_OBJECTS=`echo "$GEN_SOURCES" | sed 's,[[^ ]]*/\([[^ ]]*\)\.c,$(objects)/\1.lo,g'`
  3948 
  3949 VERSION_OBJECTS=`echo $VERSION_SOURCES`
  3950 VERSION_DEPENDS=`echo $VERSION_SOURCES`
  3951 VERSION_OBJECTS=`echo "$VERSION_OBJECTS" | sed 's,[[^ ]]*/\([[^ ]]*\)\.rc,$(objects)/\1.o,g'`
  3952 VERSION_DEPENDS=`echo "$VERSION_DEPENDS" | sed "s,\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.rc,\\\\
  3953 \\$(objects)/\\2.o: \\1/\\2.rc\\\\
  3954 	\\$(WINDRES) \\$< \\$@,g"`
  3955 
  3956 SDLMAIN_OBJECTS=`echo $SDLMAIN_SOURCES`
  3957 SDLMAIN_DEPENDS=`echo $SDLMAIN_SOURCES`
  3958 SDLMAIN_OBJECTS=`echo "$SDLMAIN_OBJECTS" | sed 's,[[^ ]]*/\([[^ ]]*\)\.c,$(objects)/\1.lo,g'`
  3959 SDLMAIN_DEPENDS=`echo "$SDLMAIN_DEPENDS" | sed "s,\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.c,\\\\
  3960 \\$(objects)/\\2.lo: \\1/\\2.c\\\\
  3961 	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@,g"`
  3962 
  3963 SDLTEST_OBJECTS=`echo $SDLTEST_SOURCES`
  3964 SDLTEST_DEPENDS=`echo $SDLTEST_SOURCES`
  3965 SDLTEST_OBJECTS=`echo "$SDLTEST_OBJECTS" | sed 's,[[^ ]]*/\([[^ ]]*\)\.c,$(objects)/\1.lo,g'`
  3966 SDLTEST_DEPENDS=`echo "$SDLTEST_DEPENDS" | sed "s,\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.c,\\\\
  3967 \\$(objects)/\\2.lo: \\1/\\2.c\\\\
  3968 	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@,g"`
  3969 
  3970 # Set runtime shared library paths as needed
  3971 
  3972 if test "x$enable_rpath" = "xyes"; then
  3973   if test $ARCH = bsdi -o $ARCH = freebsd -o $ARCH = linux -o $ARCH = netbsd; then
  3974     SDL_RLD_FLAGS="-Wl,-rpath,\${libdir}"
  3975 
  3976     AC_MSG_CHECKING(for linker option --enable-new-dtags)
  3977     have_enable_new_dtags=no
  3978     save_LDFLAGS="$LDFLAGS"
  3979     LDFLAGS="$LDFLAGS -Wl,--enable-new-dtags"
  3980     AC_TRY_LINK([
  3981     ],[
  3982     ],[
  3983     have_enable_new_dtags=yes
  3984     SDL_RLD_FLAGS="$SDL_RLD_FLAGS -Wl,--enable-new-dtags"
  3985     ])
  3986     LDFLAGS="$save_LDFLAGS"
  3987     AC_MSG_RESULT($have_enable_new_dtags)
  3988   fi
  3989   if test $ARCH = solaris; then
  3990     SDL_RLD_FLAGS="-R\${libdir}"
  3991   fi
  3992 else
  3993   SDL_RLD_FLAGS=""
  3994 fi
  3995 
  3996 SDL_STATIC_LIBS="$SDL_LIBS $EXTRA_LDFLAGS"
  3997 
  3998 dnl Expand the cflags and libraries needed by apps using SDL
  3999 AC_SUBST(SDL_CFLAGS)
  4000 AC_SUBST(SDL_LIBS)
  4001 AC_SUBST(SDL_STATIC_LIBS)
  4002 AC_SUBST(SDL_RLD_FLAGS)
  4003 if test x$enable_shared = xyes; then
  4004     ENABLE_SHARED_TRUE=
  4005     ENABLE_SHARED_FALSE="#"
  4006 else
  4007     ENABLE_SHARED_TRUE="#"
  4008     ENABLE_SHARED_FALSE=
  4009 fi
  4010 if test x$enable_static = xyes; then
  4011     ENABLE_STATIC_TRUE=
  4012     ENABLE_STATIC_FALSE="#"
  4013 else
  4014     ENABLE_STATIC_TRUE="#"
  4015     ENABLE_STATIC_FALSE=
  4016 fi
  4017 AC_SUBST(ENABLE_SHARED_TRUE)
  4018 AC_SUBST(ENABLE_SHARED_FALSE)
  4019 AC_SUBST(ENABLE_STATIC_TRUE)
  4020 AC_SUBST(ENABLE_STATIC_FALSE)
  4021 
  4022 dnl Expand the sources and objects needed to build the library
  4023 AC_SUBST(ac_aux_dir)
  4024 AC_SUBST(INCLUDE)
  4025 AC_SUBST(OBJECTS)
  4026 AC_SUBST(GEN_HEADERS)
  4027 AC_SUBST(GEN_OBJECTS)
  4028 AC_SUBST(VERSION_OBJECTS)
  4029 AC_SUBST(SDLMAIN_OBJECTS)
  4030 AC_SUBST(SDLTEST_OBJECTS)
  4031 AC_SUBST(BUILD_CFLAGS)
  4032 AC_SUBST(EXTRA_CFLAGS)
  4033 AC_SUBST(BUILD_LDFLAGS)
  4034 AC_SUBST(EXTRA_LDFLAGS)
  4035 AC_SUBST(WINDRES)
  4036 AC_SUBST(WAYLAND_SCANNER)
  4037 
  4038 cat >Makefile.rules <<__EOF__
  4039 
  4040 # Build rules for objects
  4041 -include \$(OBJECTS:.lo=.d)
  4042 
  4043 # Special dependency for SDL.c, since it depends on SDL_revision.h
  4044 $srcdir/src/SDL.c: update-revision
  4045 $DEPENDS
  4046 $VERSION_DEPENDS
  4047 $SDLMAIN_DEPENDS
  4048 $SDLTEST_DEPENDS
  4049 $WAYLAND_PROTOCOLS_DEPENDS
  4050 __EOF__
  4051 
  4052 AC_CONFIG_FILES([
  4053     Makefile:Makefile.in:Makefile.rules sdl2-config sdl2-config.cmake SDL2.spec sdl2.pc
  4054 ])
  4055 AC_CONFIG_COMMANDS([sdl2_config],[chmod a+x sdl2-config])
  4056 
  4057 SUMMARY="SDL2 Configure Summary:\n"
  4058 if test x$enable_shared = xyes; then
  4059     SUMMARY="${SUMMARY}Building Shared Libraries\n"
  4060 fi
  4061 if test x$enable_static = xyes; then
  4062     SUMMARY="${SUMMARY}Building Static Libraries\n"
  4063 fi
  4064 SUMMARY="${SUMMARY}Enabled modules :${SUMMARY_modules}\n"
  4065 SUMMARY="${SUMMARY}Assembly Math   :${SUMMARY_math}\n" 
  4066 SUMMARY="${SUMMARY}Audio drivers   :${SUMMARY_audio}\n"
  4067 SUMMARY="${SUMMARY}Video drivers   :${SUMMARY_video}\n"
  4068 if test x$have_x = xyes; then
  4069     SUMMARY="${SUMMARY}X11 libraries   :${SUMMARY_video_x11}\n"
  4070 fi
  4071 SUMMARY="${SUMMARY}Input drivers   :${SUMMARY_input}\n"
  4072 if test x$have_samplerate_h_hdr = xyes; then
  4073     SUMMARY="${SUMMARY}Using libsamplerate : YES\n"
  4074 else
  4075     SUMMARY="${SUMMARY}Using libsamplerate : NO\n"
  4076 fi
  4077 if test x$have_libudev_h_hdr = xyes; then
  4078     SUMMARY="${SUMMARY}Using libudev       : YES\n"
  4079 else
  4080     SUMMARY="${SUMMARY}Using libudev       : NO\n"
  4081 fi
  4082 if test x$have_dbus_dbus_h_hdr = xyes; then
  4083     SUMMARY="${SUMMARY}Using dbus          : YES\n"
  4084 else
  4085     SUMMARY="${SUMMARY}Using dbus          : NO\n"
  4086 fi
  4087 if test x$enable_ime = xyes; then
  4088     SUMMARY="${SUMMARY}Using ime           : YES\n"
  4089 else
  4090     SUMMARY="${SUMMARY}Using ime           : NO\n"
  4091 fi
  4092 if test x$have_ibus_ibus_h_hdr = xyes; then
  4093     SUMMARY="${SUMMARY}Using ibus          : YES\n"
  4094 else
  4095     SUMMARY="${SUMMARY}Using ibus          : NO\n"
  4096 fi
  4097 if test x$have_fcitx_frontend_h_hdr = xyes; then
  4098     SUMMARY="${SUMMARY}Using fcitx         : YES\n"
  4099 else
  4100     SUMMARY="${SUMMARY}Using fcitx         : NO\n"
  4101 fi
  4102 AC_CONFIG_COMMANDS([summary], [echo -en "$SUMMARY"], [SUMMARY="$SUMMARY"])
  4103 
  4104 AC_OUTPUT