configure.in

完整的RTP RTSP代码库

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=8
SDL_INTERFACE_AGE=1
SDL_BINARY_AGE=8
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_CANONICAL_SYSTEM

dnl Setup for automake
AM_INIT_AUTOMAKE(SDL, $SDL_VERSION)

dnl Check for tools

AC_LIBTOOL_WIN32_DLL
AM_PROG_LIBTOOL
AC_PROG_MAKE_SET
AC_PROG_CC
AC_C_INLINE
AC_C_CONST
AC_PROG_CXX
AC_PROG_INSTALL
AC_FUNC_ALLOCA
ASFLAGS=""
AC_SUBST(ASFLAGS)
CCAS="$CC"
AC_SUBST(CCAS)
CCASFLAGS=""
AC_SUBST(CCASFLAGS)
AM_CONDITIONAL([am__fastdepOBJC], false)

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="$CFLAGS -march=i486"
            fi
            ;;
        i?86-*-*)
            if test x$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)
AC_ARG_ENABLE(events,
[  --enable-events         Enable the events subsystem [default=yes]],
              , enable_events=yes)
AC_ARG_ENABLE(joystick,
[  --enable-joystick       Enable the joystick subsystem [default=yes]],
              , enable_joystick=yes)
AC_ARG_ENABLE(cdrom,
[  --enable-cdrom          Enable the cdrom subsystem [default=yes]],
              , enable_cdrom=yes)
AC_ARG_ENABLE(threads,
[  --enable-threads        Enable the threading subsystem [default=yes]],
              , enable_threads=yes)
AC_ARG_ENABLE(timers,
[  --enable-timers         Enable the timer subsystem [default=yes]],
              , enable_timers=yes)
AC_ARG_ENABLE(endian,
[  --enable-endian         Enable the endian subsystem [default=yes]],
              , enable_endian=yes)
AC_ARG_ENABLE(file,
[  --enable-file           Enable the file subsystem [default=yes]],
              , enable_file=yes)
AC_ARG_ENABLE(cpuinfo,
[  --enable-cpuinfo        Enable the cpuinfo subsystem [default=yes]],
              , enable_cpuinfo=yes)

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
        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
            CFLAGS="$CFLAGS -DOSS_USE_SOUNDCARD_H"
            ])
        fi
        AC_MSG_RESULT($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
        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,
[  --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$use_dlopen != xyes && \
               test x$enable_alsa_shared = xyes; then
                AC_MSG_ERROR([You must have dlopen() support and use the --enable-dlopen option])
            fi
            if test x$use_dlopen = xyes && \
               test x$enable_alsa_shared = xyes && test x$alsa_lib != x; then
                CFLAGS="$CFLAGS -DALSA_SUPPORT -DALSA_DYNAMIC=\$(alsa_lib) $ALSA_CFLAGS"
                AC_SUBST(alsa_lib)

                AC_MSG_CHECKING(for dlvsym)
                use_dlvsym=no
                AC_TRY_COMPILE([
                  #include <stdio.h>
                  #define __USE_GNU
                  #include <dlfcn.h>
                ],[
                  dlvsym(NULL,"","");
                ],[
                use_dlvsym=yes
                ])
                AC_MSG_RESULT($use_dlvsym);
                if test x$use_dlvsym = xyes; then
                    CFLAGS="$CFLAGS -DUSE_DLVSYM"
                fi
            else
                CFLAGS="$CFLAGS -DALSA_SUPPORT $ALSA_CFLAGS"
                SYSTEM_LIBS="$SYSTEM_LIBS $ALSA_LIBS"
            fi
            AUDIO_SUBDIRS="$AUDIO_SUBDIRS alsa"
            AUDIO_DRIVERS="$AUDIO_DRIVERS alsa/libaudio_alsa.la"
        fi
    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$have_dmedia = xyes; then
            CFLAGS="$CFLAGS -DDMEDIA_SUPPORT"
            AUDIO_SUBDIRS="$AUDIO_SUBDIRS dmedia"
            AUDIO_DRIVERS="$AUDIO_DRIVERS dmedia/libaudio_dmedia.la"
            SYSTEM_LIBS="$SYSTEM_LIBS -laudio"
        fi
    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, have_esd=yes, have_esd=no)
        if test x$have_esd = xyes; then
            AC_ARG_ENABLE(esd-shared,
[  --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 -> $esd_lib"
            if test x$use_dlopen != xyes && \
               test x$enable_esd_shared = xyes; then
                AC_MSG_ERROR([You must have dlopen() support and use the --enable-dlopen option])
            fi
            if test x$use_dlopen = xyes && \
               test x$enable_esd_shared = xyes && test x$esd_lib != x; then
                CFLAGS="$CFLAGS -DESD_SUPPORT -DESD_DYNAMIC=\$(esd_lib) $ESD_CFLAGS"
                AC_SUBST(esd_lib)
            else
                CFLAGS="$CFLAGS -DESD_SUPPORT $ESD_CFLAGS"
                SYSTEM_LIBS="$SYSTEM_LIBS $ESD_LIBS"
            fi
            AUDIO_SUBDIRS="$AUDIO_SUBDIRS esd"
            AUDIO_DRIVERS="$AUDIO_DRIVERS esd/libaudio_esd.la"
        fi
    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=`$ARTSCCONFIG --libs`
            ARTSC_PREFIX=`$ARTSCCONFIG --arts-prefix`
            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
                AC_ARG_ENABLE(arts-shared,
[  --enable-arts-shared    dynamically load aRts audio support [default=yes]],
                              , enable_arts_shared=yes)
                arts_lib_spec="$ARTSC_PREFIX/lib/libartsc.so.*"
                arts_lib=`ls $arts_lib_spec | sed 's/.*\/\(.*\)/\1/; q'`
                echo "-- $arts_lib_spec -> $arts_lib"
                if test x$use_dlopen != xyes && \
                   test x$enable_arts_shared = xyes; then
                    AC_MSG_ERROR([You must have dlopen() support and use the --enable-dlopen option])
                fi
                if test x$use_dlopen = xyes && \
                   test x$enable_arts_shared = xyes && test x$arts_lib != x; then
                    CFLAGS="$CFLAGS -DARTSC_SUPPORT -DARTSC_DYNAMIC=\$(arts_lib) $ARTSC_CFLAGS"
                    AC_SUBST(arts_lib)
                else
                    CFLAGS="$CFLAGS -DARTSC_SUPPORT $ARTSC_CFLAGS"
                    SYSTEM_LIBS="$SYSTEM_LIBS $ARTSC_LIBS"
                fi
                AUDIO_SUBDIRS="$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
            CFLAGS="$CFLAGS -DNAS_SUPPORT -I/usr/X11R6/include/"
            SYSTEM_LIBS="$SYSTEM_LIBS -L/usr/X11R6/lib -laudio -lXt"
            AUDIO_SUBDIRS="$AUDIO_SUBDIRS nas"
            AUDIO_DRIVERS="$AUDIO_DRIVERS nas/libaudio_nas.la"

        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
            CFLAGS="$CFLAGS -DNAS_SUPPORT"
            SYSTEM_LIBS="$SYSTEM_LIBS -lnas -lXt"
            AUDIO_SUBDIRS="$AUDIO_SUBDIRS nas"
            AUDIO_DRIVERS="$AUDIO_DRIVERS nas/libaudio_nas.la"
        fi
        AC_MSG_RESULT($have_nas)
    fi
}

dnl rcg07142001 See if the user wants the disk writer audio driver...
CheckDiskAudio()
{
    AC_ARG_ENABLE(diskaudio,
[  --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
        CFLAGS="$CFLAGS -DDISKAUD_SUPPORT"
        AUDIO_SUBDIRS="$AUDIO_SUBDIRS disk"
        AUDIO_DRIVERS="$AUDIO_DRIVERS disk/libaudio_disk.la"
    fi
}

dnl Set up the Atari Audio driver
CheckAtariAudio()
{
    AC_ARG_ENABLE(mintaudio,
[  --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$have_mint_falcon_hdr = xyes; then
            mintaudio=yes
            CFLAGS="$CFLAGS -DMINTAUDIO_SUPPORT"
            AUDIO_SUBDIRS="$AUDIO_SUBDIRS mint"
            AUDIO_DRIVERS="$AUDIO_DRIVERS mint/libaudio_mintaudio.la"
        fi
    fi
}

dnl See if we can use x86 assembly blitters
# NASM is available from: http://nasm.octium.net/


dnl See if we can use the new unified event interface in Linux 2.4
CheckInputEvents()