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

AC_INIT(README)

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=1

SDL_INTERFACE_AGE=1

SDL_BINARY_AGE=1

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 Setup for automake

AM_INIT_AUTOMAKE(SDL, $SDL_VERSION)

dnl Detect the canonical host and target build environment

AC_CANONICAL_HOST

AC_CANONICAL_TARGET

dnl Check for tools

AC_LIBTOOL_WIN32_DLL

AM_PROG_LIBTOOL

AC_PROG_MAKE_SET

AC_PROG_CC

AC_C_INLINE

AC_C_CONST

case "$target" in

    *-*-beos*)

        AC_PROG_CXX

        ;;

    *-*-aix*)

        AC_PROG_CXX

        ;;

    # This is stupid, but necessary on some versions of Linux (joysticks)

    *-*-linux*)

        AC_PROG_CXX

        ;;

esac

AC_PROG_INSTALL

AC_FUNC_ALLOCA

dnl The alpha architecture needs special flags for binary portability

case "$target" in

    alpha*-*-linux*)

        if test x$ac_cv_prog_gcc = xyes; then

            CFLAGS="$CFLAGS -mcpu=ev4 -Wa,-mall"

        fi

        ;;

esac

dnl Add compiler-specific optimization flags

dnl See if the user wants aggressive optimizations of the code

AC_ARG_ENABLE(debug,

[  --enable-debug          Disable aggressive optimizations [default=yes]],

              , enable_debug=yes)

if test x$enable_debug != xyes; then

    if test x$ac_cv_prog_gcc = xyes; then

        CFLAGS="$CFLAGS -fexpensive-optimizations"

        # Ack! This breaks the MMX YV12 conversion on gcc 2.95.2

        # CFLAGS="$CFLAGS -fomit-frame-pointer"

    fi

    case "$target" in

        i486-*-*)

            if test x$ac_cv_prog_gcc = xyes; then

                CFLAGS="$CFLAGS -march=486"

            fi

            ;;

        i?86-*-*)

            if test x$ac_cv_prog_gcc = xyes; then

                CFLAGS="$CFLAGS -march=pentium -mcpu=pentiumpro"

            fi

            ;;

        *-*-osf*)

            if test x$ac_cv_prog_gcc != xyes; then

                CFLAGS="-g3 -fast -arch host"

            fi

            ;;

    esac

fi

dnl Add verbose warnings by default, and allow ANSI compliance checking

AC_ARG_ENABLE(strict-ansi,

[  --enable-strict-ansi    Enable strict ANSI compliance build [default=no]],

              , enable_strict_ansi=no)

if test x$ac_cv_prog_gcc = xyes; then

    CFLAGS="$CFLAGS -Wall"

    if test x$enable_strict_ansi = xyes; then

        CFLAGS="$CFLAGS -ansi -pedantic -D_XOPEN_SOURCE"

    fi

fi

dnl Initialize the compiler and linker flags for SDL applications

SDL_CFLAGS=""

SDL_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

SYSTEM_LIBS="$SYSTEM_LIBS $MATHLIB"

dnl Enable/disable various subsystems of the SDL library

AC_ARG_ENABLE(audio,

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

              , enable_audio=yes)

if test x$enable_audio = xyes; then

    SDL_EXTRADIRS="$SDL_EXTRADIRS audio"

    SDL_EXTRALIBS="$SDL_EXTRALIBS audio/libaudio.la"

else

    CFLAGS="$CFLAGS -DDISABLE_AUDIO"

fi

AC_ARG_ENABLE(video,

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

              , enable_video=yes)

if test x$enable_video = xyes; then

    SDL_EXTRADIRS="$SDL_EXTRADIRS video"

    SDL_EXTRALIBS="$SDL_EXTRALIBS video/libvideo.la"

else

    CFLAGS="$CFLAGS -DDISABLE_VIDEO"

fi

AC_ARG_ENABLE(events,

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

              , enable_events=yes)

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

    SDL_EXTRADIRS="$SDL_EXTRADIRS events"

    SDL_EXTRALIBS="$SDL_EXTRALIBS events/libevents.la"

else

    CFLAGS="$CFLAGS -DDISABLE_EVENTS"

fi

AC_ARG_ENABLE(joystick,

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

              , enable_joystick=yes)

if test x$enable_joystick = xyes; then

    SDL_EXTRADIRS="$SDL_EXTRADIRS joystick"

    SDL_EXTRALIBS="$SDL_EXTRALIBS joystick/libjoystick.la"

else

    CFLAGS="$CFLAGS -DDISABLE_JOYSTICK"

fi

AC_ARG_ENABLE(cdrom,

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

              , enable_cdrom=yes)

if test x$enable_cdrom = xyes; then

    SDL_EXTRADIRS="$SDL_EXTRADIRS cdrom"

    SDL_EXTRALIBS="$SDL_EXTRALIBS cdrom/libcdrom.la"

else

    CFLAGS="$CFLAGS -DDISABLE_CDROM"

fi

AC_ARG_ENABLE(threads,

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

              , enable_threads=yes)

SDL_EXTRADIRS="$SDL_EXTRADIRS thread"

SDL_EXTRALIBS="$SDL_EXTRALIBS thread/libthread.la"

if test x$enable_threads != xyes; then

    CFLAGS="$CFLAGS -DDISABLE_THREADS"

    COPY_ARCH_SRC(src/thread, generic, SDL_systhread.c)

    COPY_ARCH_SRC(src/thread, generic, SDL_systhread_c.h)

    COPY_ARCH_SRC(src/thread, generic, SDL_sysmutex.c)

    COPY_ARCH_SRC(src/thread, generic, SDL_sysmutex_c.h)

    COPY_ARCH_SRC(src/thread, generic, SDL_syssem.c)

    COPY_ARCH_SRC(src/thread, generic, SDL_syssem_c.h)

    COPY_ARCH_SRC(src/thread, generic, SDL_syscond.c)

    COPY_ARCH_SRC(src/thread, generic, SDL_syscond_c.h)

fi

AC_ARG_ENABLE(timers,

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

              , enable_timers=yes)

if test x$enable_timers = xyes; then

    SDL_EXTRADIRS="$SDL_EXTRADIRS timer"

    SDL_EXTRALIBS="$SDL_EXTRALIBS timer/libtimer.la"

else

    CFLAGS="$CFLAGS -DDISABLE_TIMERS"

fi

AC_ARG_ENABLE(endian,

[  --enable-endian         Enable the endian subsystem [default=yes]],

              , enable_endian=yes)

if test x$enable_endian = xyes; then

    SDL_EXTRADIRS="$SDL_EXTRADIRS endian"

    SDL_EXTRALIBS="$SDL_EXTRALIBS endian/libendian.la"

else

    CFLAGS="$CFLAGS -DDISABLE_ENDIAN"

fi

AC_ARG_ENABLE(file,

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

              , enable_file=yes)

if test x$enable_file = xyes; then

    SDL_EXTRADIRS="$SDL_EXTRADIRS file"

    SDL_EXTRALIBS="$SDL_EXTRALIBS file/libfile.la"

else

    CFLAGS="$CFLAGS -DDISABLE_FILE"

fi

dnl See if the OSS audio interface is supported

CheckOSS()

{

    AC_ARG_ENABLE(oss,

[  --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

        AC_TRY_COMPILE([

          #include <sys/soundcard.h>

        ],[

	  int arg = SNDCTL_DSP_SETFRAGMENT;

        ],[

        have_oss=yes

        ])

        AC_MSG_RESULT($have_oss)

        if test x$have_oss = xyes; then

            CFLAGS="$CFLAGS -DOSS_SUPPORT"

            AUDIO_SUBDIRS="$AUDIO_SUBDIRS dsp"

            AUDIO_DRIVERS="$AUDIO_DRIVERS dsp/libaudio_dsp.la"

            AUDIO_SUBDIRS="$AUDIO_SUBDIRS dma"

            AUDIO_DRIVERS="$AUDIO_DRIVERS dma/libaudio_dma.la"

        fi

    fi

}

dnl See if the ALSA audio interface is supported

CheckALSA()

{

    AC_ARG_ENABLE(alsa,

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

                  , enable_alsa=yes)

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

        have_alsa=no

        AC_CHECK_HEADER(sys/asoundlib.h, have_alsa_hdr=yes)

        AC_CHECK_LIB(asound, snd_pcm_open, have_alsa_lib=yes)

        if test x$have_alsa_hdr = xyes -a x$have_alsa_lib = xyes; then

            CFLAGS="$CFLAGS -DALSA_SUPPORT"

            SYSTEM_LIBS="$SYSTEM_LIBS -lasound"

            AUDIO_SUBDIRS="$AUDIO_SUBDIRS alsa"

            AUDIO_DRIVERS="$AUDIO_DRIVERS alsa/libaudio_alsa.la"

        fi

    fi

}

dnl Check whether we want to use OpenBSD native audio or not

CheckOPENBSDAUDIO()

{

    AC_ARG_ENABLE(openbsdaudio,

[  --enable-openbsdaudio   OpenBSD native audio support [default=no]],

                  , enable_openbsdaudio=no)

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

        SYSTEM_LIBS="$SYSTEM_LIBS $ESD_LIBS"

        AUDIO_SUBDIRS="$AUDIO_SUBDIRS openbsd"

        AUDIO_DRIVERS="$AUDIO_DRIVERS openbsd/libaudio_openbsd.la"

    fi

}

dnl Find the ESD includes and libraries

CheckESD()

{

    AC_ARG_ENABLE(esd,

[  --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, [

            CFLAGS="$CFLAGS -DESD_SUPPORT $ESD_CFLAGS"

            SYSTEM_LIBS="$SYSTEM_LIBS $ESD_LIBS"

            AUDIO_SUBDIRS="$AUDIO_SUBDIRS esd"

            AUDIO_DRIVERS="$AUDIO_DRIVERS esd/libaudio_esd.la"

        ])

    fi

}

CheckARTSC()

{

    AC_ARG_ENABLE(arts,

[  --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(ARTSCCONFIG, artsc-config)

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

            : # arts isn't installed

        else

            ARTSC_CFLAGS=`$ARTSCCONFIG --cflags`

            ARTSC_LIBS=`$ARTSCCONFIG --libs`

            AC_MSG_CHECKING(for aRts development environment)

            audio_arts=no

            save_CFLAGS="$CFLAGS"

            CFLAGS="$CFLAGS $ARTSC_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

                CFLAGS="$CFLAGS -DARTSC_SUPPORT $ARTSC_CFLAGS"

                SYSTEM_LIBS="$SYSTEM_LIBS $ARTSC_LIBS"

                AUDIO_SUBDIRS="$AUDIO_SUBDIRS arts"

                AUDIO_DRIVERS="$AUDIO_DRIVERS arts/libaudio_arts.la"

            fi

        fi

    fi

}

dnl See if the NAS audio interface is supported

CheckNAS()

{

    AC_ARG_ENABLE(nas,

[  --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

	fi

	AC_MSG_RESULT($have_nas)

	if test x$have_nas = xyes; then

	    CFLAGS="$CFLAGS -DNAS_SUPPORT"

	    SYSTEM_LIBS="$SYSTEM_LIBS -laudio -lXt"

	    AUDIO_SUBDIRS="$AUDIO_SUBDIRS nas"

	    AUDIO_DRIVERS="$AUDIO_DRIVERS nas/libaudio_nas.la"

	fi

    fi

}

dnl See if we can use x86 assembly blitters

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,

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

                  , enable_nasm=yes)

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

        AC_PATH_PROG(NASM, nasm)

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

            : # nasm isn't installed

        else

            CFLAGS="$CFLAGS -DUSE_ASMBLIT -I$srcdir/hermes"

            case $ARCH in

              win32)

                  NASMFLAGS="-f win32"

                  ;;

              *)

                  NASMFLAGS="-f elf"

                  ;;

            esac

            AC_SUBST(NASMFLAGS)

            CFLAGS="$CFLAGS -I\$(top_srcdir)/src/hermes"

            SDL_EXTRADIRS="$SDL_EXTRADIRS hermes"

            SDL_EXTRALIBS="$SDL_EXTRALIBS hermes/libhermes.la"

        fi

    fi

}

dnl Find the nanox include and library directories

CheckNANOX()

{

	AC_ARG_ENABLE(video-nanox,

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

	        , enable_video_nanox=no)

	AC_ARG_ENABLE(nanox-debug,  

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

		, enable_nanox_debug=no)

	AC_ARG_ENABLE(nanox-share-memory,  

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

		, enable_nanox_share_memory=no)

	AC_ARG_WITH(nanox_pixel_type, 

		[  --with-nanox-pixel-type=[rgb/0888/888/565/555/332/pal]])

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

		if test x$enable_nanox_debug = xyes; then

			CFLAGS="$CFLAGS -DENABLE_NANOX_DEBUG"

		fi

		if test x$enable_nanox_share_memory = xyes; then

			CFLAGS="$CFLAGS -DNANOX_SHARE_MEMORY"

		fi

		case "$with_nanox_pixel_type" in

			 rgb) CFLAGS="$CFLAGS -DNANOX_PIXEL_RGB" ;;

			0888) CFLAGS="$CFLAGS -DNANOX_PIXEL_0888" ;;

			 888) CFLAGS="$CFLAGS -DNANOX_PIXEL_888"  ;;

			 565) CFLAGS="$CFLAGS -DNANOX_PIXEL_565"  ;;

			 555) CFLAGS="$CFLAGS -DNANOX_PIXEL_555"  ;;

			 332) CFLAGS="$CFLAGS -DNANOX_PIXEL_332"  ;;

			 pal) CFLAGS="$CFLAGS -DNANOX_PIXEL_PAL"  ;;

			   *) AC_MSG_ERROR([Invalid nanox_pixel_type]);;

		esac

		CFLAGS="$CFLAGS $X_CFLAGS -DENABLE_NANOX"

		SYSTEM_LIBS="$SYSTEM_LIBS -lnano-X"

		VIDEO_SUBDIRS="$VIDEO_SUBDIRS nanox"

		VIDEO_DRIVERS="$VIDEO_DRIVERS nanox/libvideo_nanox.la"

	fi

}

dnl Find the X11 include and library directories

CheckX11()

{

    AC_ARG_ENABLE(video-x11,

[  --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

            CFLAGS="$CFLAGS $X_CFLAGS -DENABLE_X11"

            if test x$ac_cv_func_shmat != xyes; then

                CFLAGS="$CFLAGS -DNO_SHARED_MEMORY"

            fi

            SYSTEM_LIBS="$SYSTEM_LIBS $X_LIBS -lX11 -lXext"

            VIDEO_SUBDIRS="$VIDEO_SUBDIRS x11"

            VIDEO_DRIVERS="$VIDEO_DRIVERS x11/libvideo_x11.la"

            AC_ARG_ENABLE(video-x11-vm,

[  --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_MSG_CHECKING(for XFree86 VidMode 1.0 support)

                video_x11_vm=no

                AC_TRY_COMPILE([

                 #include <X11/Xlib.h>

                 #include <X11/extensions/xf86vmode.h>

                ],[

                ],[

                video_x11_vm=yes

                ])

                AC_MSG_RESULT($video_x11_vm)

                if test x$video_x11_vm = xyes; then

                    CFLAGS="$CFLAGS -DXFREE86_VM"

                    # Check for nasty XFree86 4.0/Glide hack

                    AC_ARG_ENABLE(xfree86_glidehack,

[  --enable-xfree86-glidehack Alternate vidmode lib for old Glide [default=no]],

                                  , enable_xfreeglidehack=no)

                    if test x$enable_xfree86_glidehack = xyes; then

                        ac_save_libs="$LIBS"

                        LIBS="$LIBS $X_LIBS -lX11 -lXext"

                        if test x$xfree86_glidehack = x; then

                            AC_CHECK_LIB(Xxf86vm, XF40VidModeQueryExtension, xfree86_glidehack=Xxf86vm)

                        fi

                        if test x$xfree86_glidehack = x; then

                            AC_CHECK_LIB(Xxf86vm40, XF40VidModeQueryExtension, xfree86_glidehack=Xxf86vm40)

                        fi

                        LIBS="$ac_save_libs"

                    fi

                    if test x$xfree86_glidehack != x; then

                        CFLAGS="$CFLAGS -DXFREE86_VM_DYNAMIC_HACK"

                        SYSTEM_LIBS="$SYSTEM_LIBS -l$xfree86_glidehack"

                    else

                        SYSTEM_LIBS="$SYSTEM_LIBS -lXxf86vm"

                    fi

                    AC_MSG_CHECKING(for XFree86 VidMode gamma support)

                    video_x11_vmgamma=no

                    AC_TRY_COMPILE([

                     #include <X11/Xlib.h>

                     #include <X11/extensions/xf86vmode.h>

                    ],[

                     XF86VidModeGamma gamma;

                    ],[

                    video_x11_vmgamma=yes

                    ])

                    AC_MSG_RESULT($video_x11_vmgamma)

                    if test x$video_x11_vmgamma = xyes; then

                        CFLAGS="$CFLAGS -DXFREE86_VMGAMMA"

                    fi

                fi

            fi

            AC_ARG_ENABLE(dga,

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

                          , enable_dga=yes)

            AC_ARG_ENABLE(video-x11-dgamouse,

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

                          , enable_video_x11_dgamouse=yes)