dnl Process this file with autoconf to produce a configure script.

AC_INIT(README)

AC_CONFIG_HEADER(include/SDL_config.h)

AC_GNU_SOURCE

dnl Set various version strings - taken gratefully from the GTk sources

#

# Making releases:

# Edit include/SDL/SDL_version.h and change the version, then:

#   SDL_MICRO_VERSION += 1;

#   SDL_INTERFACE_AGE += 1;

#   SDL_BINARY_AGE += 1;

# if any functions have been added, set SDL_INTERFACE_AGE to 0.

# if backwards compatibility has been broken,

# set SDL_BINARY_AGE and SDL_INTERFACE_AGE to 0.

#

SDL_MAJOR_VERSION=1

SDL_MINOR_VERSION=2

SDL_MICRO_VERSION=10

SDL_INTERFACE_AGE=3

SDL_BINARY_AGE=10

SDL_VERSION=$SDL_MAJOR_VERSION.$SDL_MINOR_VERSION.$SDL_MICRO_VERSION

AC_SUBST(SDL_MAJOR_VERSION)

AC_SUBST(SDL_MINOR_VERSION)

AC_SUBST(SDL_MICRO_VERSION)

AC_SUBST(SDL_INTERFACE_AGE)

AC_SUBST(SDL_BINARY_AGE)

AC_SUBST(SDL_VERSION)

# libtool versioning

LT_RELEASE=$SDL_MAJOR_VERSION.$SDL_MINOR_VERSION

LT_CURRENT=`expr $SDL_MICRO_VERSION - $SDL_INTERFACE_AGE`

LT_REVISION=$SDL_INTERFACE_AGE

LT_AGE=`expr $SDL_BINARY_AGE - $SDL_INTERFACE_AGE`

AC_SUBST(LT_RELEASE)

AC_SUBST(LT_CURRENT)

AC_SUBST(LT_REVISION)

AC_SUBST(LT_AGE)

dnl Detect the canonical host and target build environment

AC_CONFIG_AUX_DIRS($srcdir/build-scripts)

AC_CANONICAL_SYSTEM

AC_C_BIGENDIAN

if test x$ac_cv_c_bigendian = xyes; then

    AC_DEFINE(SDL_BYTEORDER, 4321)

else

    AC_DEFINE(SDL_BYTEORDER, 1234)

fi

dnl Set up the base CFLAGS and LIBS

case "$target" in

    *-*-cygwin*)

        # We build SDL on cygwin without the UNIX emulation layer

        BASE_CFLAGS="-I/usr/include/mingw -DWIN32 -Uunix -mno-cygwin"

        BASE_LIBS="-mno-cygwin"

        ;;

    *)

        BASE_CFLAGS="-D_GNU_SOURCE=1"

        BASE_LIBS=""

        ;;

esac

CFLAGS="$CFLAGS $BASE_CFLAGS"

dnl Check for tools

#AC_LIBTOOL_DLOPEN

AC_LIBTOOL_WIN32_DLL

AC_PROG_LIBTOOL

AC_PROG_CC

AC_PROG_CXX

AC_PROG_INSTALL

dnl Check for compiler characteristics

AC_C_CONST

AC_C_INLINE

AC_C_VOLATILE

dnl See whether we are allowed to use the system C library

AC_ARG_ENABLE(libc,

AC_HELP_STRING([--enable-libc], [Use the system C library [default=yes]]),

              , enable_libc=yes)

if test x$enable_libc = xyes; then

    AC_DEFINE(HAVE_LIBC)

    dnl Check for C library headers

    AC_HEADER_STDC

    AC_CHECK_HEADERS(sys/types.h stdio.h stdlib.h stddef.h stdarg.h malloc.h memory.h string.h strings.h inttypes.h stdint.h ctype.h math.h signal.h)

    dnl Check for typedefs, structures, etc.

    AC_TYPE_SIZE_T

    if test x$ac_cv_header_inttypes_h = xyes -o x$ac_cv_header_stdint_h = xyes; then

        AC_CHECK_TYPE(int64_t)

        if test x$ac_cv_type_int64_t = xyes; then

            AC_DEFINE(SDL_HAS_64BIT_TYPE)

        fi

        have_inttypes=yes

    fi

    dnl Checks for library functions.

    AC_FUNC_ALLOCA

    AC_FUNC_MEMCMP

    if test x$ac_cv_func_memcmp_working = xyes; then

        AC_DEFINE(HAVE_MEMCMP)

    fi

    AC_FUNC_STRTOD

    if test x$ac_cv_func_strtod = xyes; then

        AC_DEFINE(HAVE_STRTOD)

    fi

    AC_CHECK_FUNCS(malloc calloc realloc free getenv putenv unsetenv qsort abs bcopy memset memcpy memmove strlen strcpy strncpy strcat strncat strdup _strrev _strupr _strlwr strchr strrchr strstr itoa _ltoa _uitoa _ultoa strtol _i64toa _ui64toa strtoll atoi atof strcmp strncmp stricmp strcasecmp sscanf snprintf vsnprint sigaction setjmp nanosleep)

fi

if test x$have_inttypes != xyes; then

    AC_CHECK_SIZEOF(char, 1)

    AC_CHECK_SIZEOF(short, 2)

    AC_CHECK_SIZEOF(int, 4)

    AC_CHECK_SIZEOF(long, 4)

    AC_CHECK_SIZEOF(long long, 8)

    if test x$ac_cv_sizeof_char = x1; then

        AC_DEFINE(int8_t, signed char)

        AC_DEFINE(uint8_t, unsigned char)

    fi

    if test x$ac_cv_sizeof_short = x2; then

        AC_DEFINE(int16_t, signed short)

        AC_DEFINE(uint16_t, unsigned short)

    else

        if test x$ac_cv_sizeof_int = x2; then

            AC_DEFINE(int16_t, signed int)

            AC_DEFINE(uint16_t, unsigned int)

        fi

    fi

    if test x$ac_cv_sizeof_int = x4; then

        AC_DEFINE(int32_t, signed int)

        AC_DEFINE(uint32_t, unsigned int)

    else

        if test x$ac_cv_sizeof_long = x4; then

            AC_DEFINE(int32_t, signed long)

            AC_DEFINE(uint32_t, unsigned long)

        fi

    fi

    if test x$ac_cv_sizeof_long = x8; then

        AC_DEFINE(int64_t, signed long)

        AC_DEFINE(uint64_t, unsigned long)

        AC_DEFINE(SDL_HAS_64BIT_TYPE)

    else

        if test x$ac_cv_sizeof_long_long = x8; then

            AC_DEFINE(int64_t, signed long long)

            AC_DEFINE(uint64_t, unsigned long long)

            AC_DEFINE(SDL_HAS_64BIT_TYPE)

        fi

    fi

    AC_DEFINE(size_t, unsigned int)

    AC_DEFINE(uintptr_t, unsigned long)

fi

# Set up the build preprocessor flags

INCLUDE="-I$srcdir/include"

if test x$srcdir != x.; then

    INCLUDE="-Iinclude $INCLUDE"

fi

BUILD_CFLAGS="$BASE_CFLAGS \$(INCLUDE)"

# Standard C sources

SOURCES="$SOURCES $srcdir/src/*.c"

SOURCES="$SOURCES $srcdir/src/audio/*.c"

SOURCES="$SOURCES $srcdir/src/cdrom/*.c"

SOURCES="$SOURCES $srcdir/src/cpuinfo/*.c"

SOURCES="$SOURCES $srcdir/src/events/*.c"

SOURCES="$SOURCES $srcdir/src/file/*.c"

SOURCES="$SOURCES $srcdir/src/joystick/*.c"

SOURCES="$SOURCES $srcdir/src/stdlib/*.c"

SOURCES="$SOURCES $srcdir/src/thread/*.c"

SOURCES="$SOURCES $srcdir/src/timer/*.c"

SOURCES="$SOURCES $srcdir/src/video/*.c"

# Set up the build libraries needed

BUILD_LIBS="$BASE_LIBS"

# Set up the compiler and linker flags for SDL applications

SDL_CFLAGS="$BASE_CFLAGS"

SDL_LIBS="$BASE_LIBS -lSDL"

dnl Add the math library for the new gamma correction support

case "$target" in

    *-*-cygwin* | *-*-mingw32*)

        MATHLIB=""

        ;;

    *-*-beos*)

        MATHLIB=""

        ;;

    *-*-darwin*)

        MATHLIB=""

        ;;

    *)

        MATHLIB="-lm"

        ;;

esac

BUILD_LIBS="$BUILD_LIBS $MATHLIB"

dnl Enable/disable various subsystems of the SDL library

AC_ARG_ENABLE(audio,

AC_HELP_STRING([--enable-audio], [Enable the audio subsystem [default=yes]]),

              , enable_audio=yes)

if test x$enable_audio != xyes; then

    AC_DEFINE(SDL_AUDIO_DISABLED)

fi

AC_ARG_ENABLE(video,

AC_HELP_STRING([--enable-video], [Enable the video subsystem [default=yes]]),

              , enable_video=yes)

if test x$enable_video != xyes; then

    AC_DEFINE(SDL_VIDEO_DISABLED)

fi

AC_ARG_ENABLE(events,

AC_HELP_STRING([--enable-events], [Enable the events subsystem [default=yes]]),

              , enable_events=yes)

if test x$enable_events != xyes; then

    AC_DEFINE(SDL_EVENTS_DISABLED)

fi

AC_ARG_ENABLE(joystick,

AC_HELP_STRING([--enable-joystick], [Enable the joystick subsystem [default=yes]]),

              , enable_joystick=yes)

if test x$enable_joystick != xyes; then

    AC_DEFINE(SDL_JOYSTICK_DISABLED)

fi

AC_ARG_ENABLE(cdrom,

AC_HELP_STRING([--enable-cdrom], [Enable the cdrom subsystem [default=yes]]),

              , enable_cdrom=yes)

if test x$enable_cdrom != xyes; then

    AC_DEFINE(SDL_CDROM_DISABLED)

fi

AC_ARG_ENABLE(threads,

AC_HELP_STRING([--enable-threads], [Enable the threading subsystem [default=yes]]),

              , enable_threads=yes)

if test x$enable_threads != xyes; then

    AC_DEFINE(SDL_THREADS_DISABLED)

fi

AC_ARG_ENABLE(timers,

AC_HELP_STRING([--enable-timers], [Enable the timer subsystem [default=yes]]),

              , enable_timers=yes)

if test x$enable_timers != xyes; then

    AC_DEFINE(SDL_TIMERS_DISABLED)

fi

AC_ARG_ENABLE(file,

AC_HELP_STRING([--enable-file], [Enable the file subsystem [default=yes]]),

              , enable_file=yes)

if test x$enable_file != xyes; then

    AC_DEFINE(SDL_FILE_DISABLED)

fi

AC_ARG_ENABLE(loadso,

AC_HELP_STRING([--enable-loadso], [Enable the shared object loading subsystem [default=yes]]),

              , enable_loadso=yes)

if test x$enable_loadso != xyes; then

    AC_DEFINE(SDL_LOADSO_DISABLED)

fi

AC_ARG_ENABLE(cpuinfo,

AC_HELP_STRING([--enable-cpuinfo], [Enable the cpuinfo subsystem [default=yes]]),

              , enable_cpuinfo=yes)

if test x$enable_cpuinfo != xyes; then

    AC_DEFINE(SDL_CPUINFO_DISABLED)

fi

AC_ARG_ENABLE(assembly-blit,

AC_HELP_STRING([--enable-asm-blit], [Enable assembly blitters [default=yes]]),

              , enable_asm_blit=yes)

if test x$enable_asm_blit = xyes; then

    AC_DEFINE(SDL_ASSEMBLY_BLITTERS)

fi

dnl See if the OSS audio interface is supported

CheckOSS()

{

    AC_ARG_ENABLE(oss,

AC_HELP_STRING([--enable-oss], [support the OSS audio API [default=yes]]),

                  , enable_oss=yes)

    if test x$enable_audio = xyes -a x$enable_oss = xyes; then

        AC_MSG_CHECKING(for OSS audio support)

        have_oss=no

        if test x$have_oss != xyes; then

            AC_TRY_COMPILE([

              #include <sys/soundcard.h>

            ],[

              int arg = SNDCTL_DSP_SETFRAGMENT;

            ],[

            have_oss=yes

            ])

        fi

        if test x$have_oss != xyes; then

            AC_TRY_COMPILE([

              #include <soundcard.h>

            ],[

              int arg = SNDCTL_DSP_SETFRAGMENT;

            ],[

            have_oss=yes

            AC_DEFINE(SDL_AUDIO_DRIVER_OSS_SOUNDCARD_H)

            ])

        fi

        AC_MSG_RESULT($have_oss)

        if test x$have_oss = xyes; then

            AC_DEFINE(SDL_AUDIO_DRIVER_OSS)

            SOURCES="$SOURCES $srcdir/src/audio/dsp/*.c"

            SOURCES="$SOURCES $srcdir/src/audio/dma/*.c"

            have_audio=yes

            # OpenBSD needs linking with ossaudio emulation library

            case "$target" in

                *-*-openbsd*)

                    BUILD_LIBS="$BUILD_LIBS -lossaudio";;

            esac

        fi

    fi

}

dnl See if the ALSA audio interface is supported

CheckALSA()

{

    AC_ARG_ENABLE(alsa,

AC_HELP_STRING([--enable-alsa], [support the ALSA audio API [default=yes]]),

                  , enable_alsa=yes)

    if test x$enable_audio = xyes -a x$enable_alsa = xyes; then

        AM_PATH_ALSA(0.9.0, have_alsa=yes, have_alsa=no)

        # Restore all flags from before the ALSA detection runs

        CFLAGS="$alsa_save_CFLAGS"

        LDFLAGS="$alsa_save_LDFLAGS"

        LIBS="$alsa_save_LIBS"

        if test x$have_alsa = xyes; then

            AC_ARG_ENABLE(alsa-shared,

AC_HELP_STRING([--enable-alsa-shared], [dynamically load ALSA audio support [default=yes]]),

                          , enable_alsa_shared=yes)

            if test "x`echo $ALSA_LIBS | grep -- -L`" = "x"; then

                if test "x`ls /lib/libasound.so.* 2> /dev/null`" != "x"; then

                    ALSA_LIBS="-L/lib $ALSA_LIBS"

                elif test "x`ls /usr/lib/libasound.so.* 2> /dev/null`" != "x"; then

                    ALSA_LIBS="-L/usr/lib $ALSA_LIBS"

                elif test "x`ls /usr/local/lib/libasound.so.* 2> /dev/null`" != "x"; then

                    ALSA_LIBS="-L/usr/local/lib $ALSA_LIBS"

                fi

            fi

            alsa_lib_spec=`echo $ALSA_LIBS | sed 's/.*-L\([[^ ]]*\).*/\1\/libasound.so.*/'`

            alsa_lib=`ls $alsa_lib_spec | sed 's/.*\/\(.*\)/\1/; q'`

            echo "-- $alsa_lib_spec -> $alsa_lib"

            AC_DEFINE(SDL_AUDIO_DRIVER_ALSA)

            SOURCES="$SOURCES $srcdir/src/audio/alsa/*.c"

            BUILD_CFLAGS="$BUILD_CFLAGS $ALSA_CFLAGS"

            if test x$have_loadso != xyes && \

               test x$enable_alsa_shared = xyes; then

                AC_MSG_ERROR([You must have SDL_LoadObject() support])

            fi

            if test x$have_loadso = xyes && \

               test x$enable_alsa_shared = xyes && test x$alsa_lib != x; then

                AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_ALSA_DYNAMIC, "$alsa_lib")

            else

                BUILD_LIBS="$BUILD_LIBS $ALSA_LIBS"

            fi

            have_audio=yes

        fi

    fi

        if test x$have_alsa = xyes; then

            AC_ARG_ENABLE(alsa-shared,

[  --enable-alsa-shared     dynamically load ALSA audio support [default=yes]],

                          , enable_alsa_shared=yes)

            if test "x`echo $ALSA_LIBS | grep -- -L`" = "x"; then

                if test "x`ls /lib/libasound.so.* 2> /dev/null`" != "x"; then

                    ALSA_LIBS="-L/lib $ALSA_LIBS"

                elif test "x`ls /usr/lib/libasound.so.* 2> /dev/null`" != "x"; then

                    ALSA_LIBS="-L/usr/lib $ALSA_LIBS"

                elif test "x`ls /usr/local/lib/libasound.so.* 2> /dev/null`" != "x"; then

                    ALSA_LIBS="-L/usr/local/lib $ALSA_LIBS"

                fi

            fi

            alsa_lib_spec=`echo $ALSA_LIBS | sed 's/.*-L\([[^ ]]*\).*/\1\/libasound.so.*/'`

            alsa_lib=`ls $alsa_lib_spec | sed 's/.*\/\(.*\)/\1/; q'`

            echo "-- $alsa_lib_spec -> $alsa_lib"

            if test x$have_loadso != xyes && \

               test x$enable_alsa_shared = xyes; then

                AC_MSG_ERROR([You must have SDL_LoadObject() support])

            fi

            if test x$have_loadso = xyes && \

               test x$enable_alsa_shared = xyes && test x$alsa_lib != x; then

                CFLAGS="$CFLAGS -DALSA_SUPPORT -DALSA_DYNAMIC=\$(alsa_lib) $ALSA_CFLAGS"

                AC_SUBST(alsa_lib)

                use_dlvsym=no

                AC_CHECK_LIB(dl, dlvsym, [use_dlvsym=yes])

                if test x$use_dlvsym = xyes; then

                    CFLAGS="$CFLAGS -DUSE_DLVSYM"

                fi

            else

                CFLAGS="$CFLAGS -DALSA_SUPPORT $ALSA_CFLAGS"

                SYSTEM_LIBS="$SYSTEM_LIBS $ALSA_LIBS"

            fi

            SDL_SRCS="$SDL_SRCS `(cd $srcdir && ls audio/alsa/*.c)`"

        fi

}

dnl Check whether we want to use IRIX 6.5+ native audio or not

CheckDMEDIA()

{

    if test x$enable_audio = xyes; then

        AC_MSG_CHECKING(for dmedia audio support)

        have_dmedia=no

        AC_TRY_COMPILE([

          #include <dmedia/audio.h>

        ],[

          ALport audio_port;

        ],[

        have_dmedia=yes

        ])

        AC_MSG_RESULT($have_dmedia)

        # Set up files for the audio library

        if test x$have_dmedia = xyes; then

            AC_DEFINE(SDL_AUDIO_DRIVER_DMEDIA)

            SOURCES="$SOURCES $srcdir/src/audio/dmedia/*.c"

            BUILD_LIBS="$BUILD_LIBS -laudio"

            have_audio=yes

        fi

    fi

}

dnl Find the ESD includes and libraries

CheckESD()

{

    AC_ARG_ENABLE(esd,

AC_HELP_STRING([--enable-esd], [support the Enlightened Sound Daemon [default=yes]]),

                  , enable_esd=yes)

    if test x$enable_audio = xyes -a x$enable_esd = xyes; then

        AM_PATH_ESD(0.2.8, have_esd=yes, have_esd=no)

        if test x$have_esd = xyes; then

            AC_ARG_ENABLE(esd-shared,

AC_HELP_STRING([--enable-esd-shared], [dynamically load ESD audio support [default=yes]]),

                          , enable_esd_shared=yes)

            esd_lib_spec=`echo $ESD_LIBS | sed 's/.*-L\([[^ ]]*\).*/\1\/libesd.so.*/'`

            esd_lib=`ls $esd_lib_spec | sed 's/.*\/\(.*\)/\1/; q'`

            echo "-- $esd_lib_spec -> $esd_lib"

            if test x$have_loadso != xyes && \

               test x$enable_esd_shared = xyes; then

                AC_MSG_ERROR([You must have SDL_LoadObject() support])

            fi

            if test x$have_loadso = xyes && \

               test x$enable_esd_shared = xyes && test x$esd_lib != x; then

                AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_ESD_DYNAMIC, "$esd_lib")

            fi

            AC_DEFINE(SDL_AUDIO_DRIVER_ESD)

            SOURCES="$SOURCES $srcdir/src/audio/esd/*.c"

            BUILD_CFLAGS="$BUILD_CFLAGS $ESD_CFLAGS"

            BUILD_LIBS="$BUILD_LIBS $ESD_LIBS"

            have_audio=yes

        fi

    fi

}

CheckARTSC()

{

    AC_ARG_ENABLE(arts,

AC_HELP_STRING([--enable-arts], [support the Analog Real Time Synthesizer [default=yes]]),

                  , enable_arts=yes)

    if test x$enable_audio = xyes -a x$enable_arts = xyes; then

        AC_PATH_PROG(ARTSCONFIG, artsc-config)

        if test x$ARTSCONFIG = x -o x$ARTSCONFIG = x'"$ARTSCONFIG"'; then

            : # arts isn't installed

        else

            ARTS_CFLAGS=`$ARTSCONFIG --cflags`

            ARTS_LIBS=`$ARTSCONFIG --libs`

            ARTS_PREFIX=`$ARTSCONFIG --arts-prefix`

            AC_MSG_CHECKING(for aRts development environment)

            audio_arts=no

            save_CFLAGS="$CFLAGS"

            CFLAGS="$CFLAGS $ARTS_CFLAGS"

            AC_TRY_COMPILE([

             #include <artsc.h>

            ],[

             arts_stream_t stream;

            ],[

            audio_arts=yes

            ])

            CFLAGS="$save_CFLAGS"

            AC_MSG_RESULT($audio_arts)

            if test x$audio_arts = xyes; then

                AC_ARG_ENABLE(arts-shared,

AC_HELP_STRING([--enable-arts-shared], [dynamically load aRts audio support [default=yes]]),

                              , enable_arts_shared=yes)

                arts_lib_spec="$ARTS_PREFIX/lib/libartsc.so.*"

                arts_lib=`ls $arts_lib_spec | sed 's/.*\/\(.*\)/\1/; q'`

                echo "-- $arts_lib_spec -> $arts_lib"

                if test x$have_loadso != xyes && \

                   test x$enable_arts_shared = xyes; then

                    AC_MSG_ERROR([You must have SDL_LoadObject() support])

                fi

                if test x$have_loadso = xyes && \

                   test x$enable_arts_shared = xyes && test x$arts_lib != x; then

                    AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_ARTS_DYNAMIC, "$arts_lib")

                fi

                AC_DEFINE(SDL_AUDIO_DRIVER_ARTS)

                SOURCES="$SOURCES $srcdir/src/audio/arts/*.c"

                BUILD_CFLAGS="$BUILD_CFLAGS $ARTS_CFLAGS"

                BUILD_LIBS="$BUILD_LIBS $ARTS_LIBS"

                have_audio=yes

            fi

        fi

    fi

}

dnl See if the NAS audio interface is supported

CheckNAS()

{

    AC_ARG_ENABLE(nas,

AC_HELP_STRING([--enable-nas], [support the NAS audio API [default=yes]]),

                  , enable_nas=yes)

    if test x$enable_audio = xyes -a x$enable_nas = xyes; then

        AC_MSG_CHECKING(for NAS audio support)

        have_nas=no

        if test -r /usr/X11R6/include/audio/audiolib.h; then

            have_nas=yes

            NAS_CFLAGS="-I/usr/X11R6/include/"

            NAS_LIBS="-laudio -lXt"

        dnl On IRIX, the NAS includes are in a different directory,

        dnl and libnas must be explicitly linked in

        elif test -r /usr/freeware/include/nas/audiolib.h; then

            have_nas=yes

            NAS_LIBS="-lnas -lXt"

        fi

        AC_MSG_RESULT($have_nas)

        if test x$have_nas = xyes; then

            AC_DEFINE(SDL_AUDIO_DRIVER_NAS)

            SOURCES="$SOURCES $srcdir/src/audio/nas/*.c"

            BUILD_CFLAGS="$BUILD_CFLAGS $NAS_CFLAGS"

            BUILD_LIBS="$BUILD_LIBS $NAS_LIBS"

            have_audio=yes

        fi

    fi

}

dnl rcg07142001 See if the user wants the disk writer audio driver...

CheckDiskAudio()

{

    AC_ARG_ENABLE(diskaudio,

AC_HELP_STRING([--enable-diskaudio], [support the disk writer audio driver [default=yes]]),

                  , enable_diskaudio=yes)

    if test x$enable_audio = xyes -a x$enable_diskaudio = xyes; then

        AC_DEFINE(SDL_AUDIO_DRIVER_DISK)

        SOURCES="$SOURCES $srcdir/src/audio/disk/*.c"

    fi

}

dnl Set up the Atari Audio driver

CheckAtariAudio()

{

    AC_ARG_ENABLE(mintaudio,

AC_HELP_STRING([--enable-mintaudio], [support Atari audio driver [default=yes]]),

                  , enable_mintaudio=yes)

    if test x$enable_audio = xyes -a x$enable_mintaudio = xyes; then

        mintaudio=no

        AC_CHECK_HEADER(mint/falcon.h, have_mint_falcon_hdr=yes)

        if test x$have_mint_falcon_hdr = xyes; then

            mintaudio=yes

            AC_DEFINE(SDL_AUDIO_DRIVER_MINT)

            SOURCES="$SOURCES $srcdir/src/audio/mint/*.c"

            have_audio=yes

        fi

    fi

}

dnl See if we can use x86 assembly blitters

# NASM is available from: http://nasm.sourceforge.net

CheckNASM()

{

    dnl Make sure we are running on an x86 platform

    case $target in

        i?86*)

            ;;

        *)

        # Nope, bail early.

            return

            ;;

    esac

    dnl Check for NASM (for assembly blit routines)

    AC_ARG_ENABLE(nasm,

AC_HELP_STRING([--enable-nasm], [use nasm assembly blitters on x86 [default=yes]]),

                  , enable_nasm=yes)

    if test x$enable_video = xyes -a x$enable_asm_blit = xyes -a x$enable_nasm = xyes; then

        AC_PATH_PROG(NASM, nasm)

        if test x$NASM != x -a x$NASM != x'"$NASM"'; then

            AC_DEFINE(SDL_HERMES_BLITTERS)

            SOURCES="$SOURCES $srcdir/src/hermes/*.asm"

            case $ARCH in

              win32)

                  NASMFLAGS="-f win32"

                  ;;

              openbsd)

                  NASMFLAGS="-f aoutb"

                  ;;

              *)

                  NASMFLAGS="-f elf"

                  ;;

            esac

            AC_SUBST(NASM)

            AC_SUBST(NASMFLAGS)

            case "$target" in

                # this line is needed for QNX, because it's not defined the __ELF__

                *-*-qnx*)

                     BUILD_CFLAGS="$BUILD_CFLAGS -D__ELF__";;

                *-*-solaris*)

                     BUILD_CFLAGS="$BUILD_CFLAGS -D__ELF__";;

            esac

        fi

    fi

}

dnl Check for altivec instruction support using gas syntax

CheckAltivec()

{

    AC_ARG_ENABLE(altivec,

AC_HELP_STRING([--enable-altivec], [use altivec assembly blitters on PPC [default=yes]]),

                  , enable_altivec=yes)

    if test x$enable_video = xyes -a x$enable_asm_blit = xyes -a x$enable_altivec = xyes; then

        have_altivec_h_hdr=no

        AC_CHECK_HEADER(altivec.h, have_altivec_h_hdr=yes)

        save_CFLAGS="$CFLAGS"

        have_gcc_altivec=no

        AC_MSG_CHECKING(for Altivec with GCC -maltivec option)

        altivec_CFLAGS="-maltivec"

        CFLAGS="$save_CFLAGS $altivec_CFLAGS"

        if test x$have_altivec_h_hdr = xyes; then

          AC_TRY_COMPILE([

          #include <altivec.h>

          vector unsigned int vzero() {

              return vec_splat_u32(0);

          }

          ],[

          ],[

          have_gcc_altivec=yes

          ])

          AC_MSG_RESULT($have_gcc_altivec)

        else

          AC_TRY_COMPILE([

          vector unsigned int vzero() {

              return vec_splat_u32(0);

          }

          ],[

          ],[

          have_gcc_altivec=yes

          ])

          AC_MSG_RESULT($have_gcc_altivec)

        fi

        if test x$have_gcc_altivec = xno; then

            AC_MSG_CHECKING(for Altivec with GCC -faltivec option)

            altivec_CFLAGS="-faltivec"

            CFLAGS="$save_CFLAGS $altivec_CFLAGS"

            if test x$have_altivec_h_hdr = xyes; then

              AC_TRY_COMPILE([

              #include <altivec.h>

              vector unsigned int vzero() {

                  return vec_splat_u32(0);

              }

              ],[

              ],[

              have_gcc_altivec=yes

              ])

              AC_MSG_RESULT($have_gcc_altivec)

            else

              AC_TRY_COMPILE([

              vector unsigned int vzero() {

                  return vec_splat_u32(0);

              }

              ],[

              ],[

              have_gcc_altivec=yes

              ])

              AC_MSG_RESULT($have_gcc_altivec)

            fi

        fi

        CFLAGS="$save_CFLAGS"

        if test x$have_gcc_altivec = xyes; then

            AC_DEFINE(SDL_ALTIVEC_BLITTERS)

            if test x$have_altivec_h_hdr = xyes; then

              AC_DEFINE(HAVE_ALTIVEC_H)

            fi

            BUILD_CFLAGS="$BUILD_CFLAGS $altivec_CFLAGS"

        fi

    fi

}

dnl Do the iPod thing

CheckIPod()

{

    AC_ARG_ENABLE(ipod,

AC_HELP_STRING([--enable-ipod], [configure SDL to work with iPodLinux [default=yes on arm-elf]]),

        , enable_ipod=yes)

    if test x$enable_ipod = xyes; then

        BUILD_CFLAGS="$BUILD_CFLAGS -DIPOD"

        AC_DEFINE(SDL_VIDEO_DRIVER_IPOD)

        SOURCES="$SOURCES $srcdir/src/video/ipod/*.c"

    fi

}

dnl Find the nanox include and library directories

CheckNANOX()

{

    AC_ARG_ENABLE(video-nanox,

        AC_HELP_STRING([--enable-video-nanox], [use nanox video driver [default=no]]),

        , enable_video_nanox=no)

    if test x$enable_video = xyes -a x$enable_video_nanox = xyes; then

        AC_ARG_ENABLE(nanox-debug,  

            AC_HELP_STRING([--enable-nanox-debug], [print debug messages [default=no]]),

            , enable_nanox_debug=no)

        if test x$enable_nanox_debug = xyes; then

            BUILD_CFLAGS="$BUILD_CFLAGS -DENABLE_NANOX_DEBUG"

        fi

        AC_ARG_ENABLE(nanox-share-memory,  

            AC_HELP_STRING([--enable-nanox-share-memory], [use share memory [default=no]]),

            , enable_nanox_share_memory=no)

        if test x$enable_nanox_share_memory = xyes; then

            BUILD_CFLAGS="$BUILD_CFLAGS -DNANOX_SHARE_MEMORY"

        fi

        AC_ARG_ENABLE(nanox_direct_fb, 

            AC_HELP_STRING([--enable-nanox-direct-fb], [use direct framebuffer access [default=no]]),

            , enable_nanox_direct_fb=no)

        if test x$enable_nanox_direct_fb = xyes; then

            BUILD_CFLAGS="$BUILD_CFLAGS -DENABLE_NANOX_DIRECT_FB"

        fi

        AC_DEFINE(SDL_VIDEO_DRIVER_NANOX)

        SOURCES="$SOURCES $srcdir/src/video/nanox/*.c"

        BUILD_LIBS="$BUILD_LIBS -lnano-X"

        have_video=yes

    fi

}

dnl Find the X11 include and library directories

CheckX11()

{

    AC_ARG_ENABLE(video-x11,

AC_HELP_STRING([--enable-video-x11], [use X11 video driver [default=yes]]),

                  , enable_video_x11=yes)

    if test x$enable_video = xyes -a x$enable_video_x11 = xyes; then

        AC_PATH_X

        AC_PATH_XTRA

        if test x$have_x = xyes; then

            AC_ARG_ENABLE(x11-shared,

AC_HELP_STRING([--enable-x11-shared], [dynamically load X11 support [default=yes]]),

                          , enable_x11_shared=yes)

            case "$target" in

                *-*-darwin* )

                    x11_lib='/usr/X11R6/lib/libX11.6.dylib'

                    x11ext_lib='/usr/X11R6/lib/libXext.6.dylib'

                    ;;

                *-*-osf* )

                    x11_lib='libX11.so'

                    x11ext_lib='libXext.so'

                    ;;

                *)

                    x11_lib='libX11.so.6'

                    x11ext_lib='libXext.so.6'

                    ;;

            esac

            X_CFLAGS="$X_CFLAGS -DXTHREADS"

            if test x$ac_cv_func_shmat != xyes; then

                X_CFLAGS="$X_CFLAGS -DNO_SHARED_MEMORY"

            fi

            if test x$have_loadso != xyes && \

               test x$enable_x11_shared = xyes; then

                AC_MSG_ERROR([You must have SDL_LoadObject() support])

            fi

            if test x$have_loadso = xyes && \

               test x$enable_x11_shared = xyes && test x$x11_lib != x && test x$x11ext_lib != x; then

                echo "-- dynamic libX11 -> $x11_lib"

                echo "-- dynamic libX11ext -> $x11ext_lib"

                AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC, "$x11_lib")

                AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT, "$x11ext_lib")

            else

                X_LIBS="$X_LIBS -lX11 -lXext"

            fi

            AC_DEFINE(SDL_VIDEO_DRIVER_X11)

            SOURCES="$SOURCES $srcdir/src/video/x11/*.c"

            BUILD_CFLAGS="$BUILD_CFLAGS $X_CFLAGS"

            BUILD_LIBS="$BUILD_LIBS $X_LIBS"

            have_video=yes

            AC_ARG_ENABLE(dga,

AC_HELP_STRING([--enable-dga], [allow use of X11 DGA code [default=yes]]),

                          , enable_dga=yes)

            if test x$enable_dga = xyes; then

                SOURCES="$SOURCES $srcdir/src/video/Xext/Xxf86dga/*.c"

            fi

            AC_ARG_ENABLE(video-dga,

AC_HELP_STRING([--enable-video-dga], [use DGA 2.0 video driver [default=yes]]),

                  , enable_video_dga=yes)

            if test x$enable_dga = xyes -a x$enable_video_dga = xyes; then

                AC_DEFINE(SDL_VIDEO_DRIVER_DGA)

                SOURCES="$SOURCES $srcdir/src/video/dga/*.c"

            fi

            AC_ARG_ENABLE(video-x11-dgamouse,

AC_HELP_STRING([--enable-video-x11-dgamouse], [use X11 DGA for mouse events [default=yes]]),

                          , enable_video_x11_dgamouse=yes)

            if test x$enable_dga = xyes -a x$enable_video_x11_dgamouse = xyes; then

                AC_DEFINE(SDL_VIDEO_DRIVER_X11_DGAMOUSE)

            fi

            AC_ARG_ENABLE(video-x11-vm,

AC_HELP_STRING([--enable-video-x11-vm], [use X11 VM extension for fullscreen [default=yes]]),

                          , enable_video_x11_vm=yes)

            if test x$enable_video_x11_vm = xyes; then

                AC_DEFINE(SDL_VIDEO_DRIVER_X11_VIDMODE)

                SOURCES="$SOURCES $srcdir/src/video/Xext/Xxf86vm/*.c"

            fi

            AC_ARG_ENABLE(video-x11-xv,

AC_HELP_STRING([--enable-video-x11-xv], [use X11 XvImage extension for video [default=yes]]),

                          , enable_video_x11_xv=yes)

            if test x$enable_video_x11_xv = xyes; then

                AC_DEFINE(SDL_VIDEO_DRIVER_X11_XV)

                SOURCES="$SOURCES $srcdir/src/video/Xext/Xv/*.c"

            fi

            AC_ARG_ENABLE(video-x11-xinerama,

AC_HELP_STRING([--enable-video-x11-xinerama], [enable X11 Xinerama support [default=yes]]),

                            , enable_video_x11_xinerama=yes)

            if test x$enable_video_x11_xinerama = xyes; then

                AC_DEFINE(SDL_VIDEO_DRIVER_X11_XINERAMA)

                SOURCES="$SOURCES $srcdir/src/video/Xext/Xinerama/*.c"

            fi

            AC_ARG_ENABLE(video-x11-xme,

AC_HELP_STRING([--enable-video-x11-xme], [enable Xi Graphics XME for fullscreen [default=yes]]),

                            , enable_video_x11_xme=yes)

            if test x$enable_video_x11_xme = xyes; then

                AC_DEFINE(SDL_VIDEO_DRIVER_X11_XME)

                SOURCES="$SOURCES $srcdir/src/video/Xext/XME/*.c"

            fi

        fi

    fi

}

dnl Check for QNX photon video driver

CheckPHOTON()

{

    AC_ARG_ENABLE(video-photon,

AC_HELP_STRING([--enable-video-photon], [use QNX Photon video driver [default=yes]]),

                  , enable_video_photon=yes)

    if test x$enable_video = xyes -a x$enable_video_photon = xyes; then

        AC_MSG_CHECKING(for QNX Photon support)

        video_photon=no

        AC_TRY_COMPILE([

          #include <Ph.h>

          #include <Pt.h>

          #include <photon/Pg.h>

          #include <photon/PdDirect.h>

        ],[

         PgDisplaySettings_t *visual;

        ],[

        video_photon=yes

        ])

        AC_MSG_RESULT($video_photon)

        if test x$video_photon = xyes; then

            AC_DEFINE(SDL_VIDEO_DRIVER_PHOTON)

            SOURCES="$SOURCES $srcdir/src/video/photon/*.c"

            BUILD_LIBS="$BUILD_LIBS -lph"

            have_video=yes

            CheckOpenGLQNX

        fi

    fi

}

dnl Set up the BWindow video driver if enabled

CheckBWINDOW()

{

    if test x$enable_video = xyes; then

        AC_DEFINE(SDL_VIDEO_DRIVER_BWINDOW)

        SOURCES="$SOURCES $srcdir/src/video/bwindow/*.cc"

        have_video=yes

    fi

}

dnl Set up the Carbon/QuickDraw video driver for Mac OS X (but not Darwin)

CheckCARBON()

{

    AC_ARG_ENABLE(video-carbon,

AC_HELP_STRING([--enable-video-carbon], [use Carbon/QuickDraw video driver [default=no]]),

                  , enable_video_carbon=no)

    if test x$enable_video = xyes -a x$enable_video_carbon = xyes; then

        AC_MSG_CHECKING(for Carbon framework)

        have_carbon=no

        AC_TRY_COMPILE([

          #include <Carbon/Carbon.h>

        ],[

        ],[

        have_carbon=yes

        ])

        AC_MSG_RESULT($have_carbon)

        if test x$have_carbon = xyes; then

            AC_DEFINE(SDL_VIDEO_DRIVER_TOOLBOX)

            SOURCES="$SOURCES $srcdir/src/video/maccommon/*.c"

            SOURCES="$SOURCES $srcdir/src/video/macrom/*.c"

            have_video=yes

        fi

    fi

}

dnl Set up the Cocoa/Quartz video driver for Mac OS X (but not Darwin)

CheckCOCOA()

{

    AC_ARG_ENABLE(video-cocoa,

AC_HELP_STRING([--enable-video-cocoa], [use Cocoa/Quartz video driver [default=yes]]),

                  , enable_video_cocoa=yes)

    if test x$enable_video = xyes -a x$enable_video_cocoa = xyes; then

        save_CFLAGS="$CFLAGS"

        dnl work around that we don't have Objective-C support in autoconf

        CFLAGS="$CFLAGS -x objective-c"

        AC_MSG_CHECKING(for Cocoa framework)

        have_cocoa=no

        AC_TRY_COMPILE([

          #import <Cocoa/Cocoa.h>

        ],[

        ],[

        have_cocoa=yes

        ])

        AC_MSG_RESULT($have_cocoa)

        CFLAGS="$save_CFLAGS"

        if test x$have_cocoa = xyes; then

            AC_DEFINE(SDL_VIDEO_DRIVER_QUARTZ)

            SOURCES="$SOURCES $srcdir/src/video/quartz/*.m"

            have_video=yes

        fi

    fi

}

dnl Find the framebuffer console includes

CheckFBCON()

{

    AC_ARG_ENABLE(video-fbcon,

AC_HELP_STRING([--enable-video-fbcon], [use framebuffer console video driver [default=yes]]),

                  , enable_video_fbcon=yes)

    if test x$enable_video = xyes -a x$enable_video_fbcon = xyes; then

        AC_MSG_CHECKING(for framebuffer console support)

        video_fbcon=no

        AC_TRY_COMPILE([

         #include <linux/fb.h>

         #include <linux/kd.h>

         #include <linux/keyboard.h>

        ],[

        ],[

        video_fbcon=yes

        ])

        AC_MSG_RESULT($video_fbcon)

        if test x$video_fbcon = xyes; then

            AC_DEFINE(SDL_VIDEO_DRIVER_FBCON)

            SOURCES="$SOURCES $srcdir/src/video/fbcon/*.c"

            have_video=yes

        fi

    fi

}

dnl Find DirectFB

CheckDirectFB()

{

    AC_ARG_ENABLE(video-directfb,

AC_HELP_STRING([--enable-video-directfb], [use DirectFB video driver [default=no]]),

                  , enable_video_directfb=no)

    if test x$enable_video = xyes -a x$enable_video_directfb = xyes; then

        video_directfb=no

        AC_PATH_PROG(PKG_CONFIG, pkg-config, no)

        if test x$PKG_CONFIG = xno ; then

            AC_MSG_WARN([*** pkg-config is required to build the DirectFB video driver.])

        else

            AC_MSG_CHECKING(for DirectFB support)

            if ! $PKG_CONFIG --atleast-pkgconfig-version 0.7 ; then

                AC_MSG_ERROR([*** pkg-config too old; version 0.7 or better required.])

            fi

            DIRECTFB_REQUIRED_VERSION=0.9.15

            if $PKG_CONFIG --atleast-version $DIRECTFB_REQUIRED_VERSION directfb ; then

                DIRECTFB_CFLAGS=`$PKG_CONFIG --cflags directfb`

                DIRECTFB_LIBS=`$PKG_CONFIG --libs directfb`

                video_directfb=yes

            fi

        fi