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:
#   MICRO_VERSION += 1;
#   INTERFACE_AGE += 1;
#   BINARY_AGE += 1;
# if any functions have been added, set INTERFACE_AGE to 0.
# if backwards compatibility has been broken,
# set BINARY_AGE and INTERFACE_AGE to 0.
#
MAJOR_VERSION=1
MINOR_VERSION=2
MICRO_VERSION=8
INTERFACE_AGE=6
BINARY_AGE=8
VERSION=$MAJOR_VERSION.$MINOR_VERSION.$MICRO_VERSION

AC_SUBST(MAJOR_VERSION)
AC_SUBST(MINOR_VERSION)
AC_SUBST(MICRO_VERSION)
AC_SUBST(INTERFACE_AGE)
AC_SUBST(BINARY_AGE)
AC_SUBST(VERSION)

# libtool versioning
LT_RELEASE=$MAJOR_VERSION.$MINOR_VERSION
LT_CURRENT=`expr $MICRO_VERSION - $INTERFACE_AGE`
LT_REVISION=$INTERFACE_AGE
LT_AGE=`expr $BINARY_AGE - $INTERFACE_AGE`

AC_SUBST(LT_RELEASE)
AC_SUBST(LT_CURRENT)
AC_SUBST(LT_REVISION)
AC_SUBST(LT_AGE)

dnl Detect the canonical build and host environments
AC_CONFIG_AUX_DIRS($srcdir/build-scripts)
AC_CANONICAL_HOST

dnl Set up the compiler and linker flags
case "$host" in
    *-*-cygwin*)
        # We build SDL on cygwin without the UNIX emulation layer
        BASE_CFLAGS="-I/usr/include/mingw -mno-cygwin"
        BASE_LDFLAGS="-mno-cygwin"
        ;;
    *)
        BASE_CFLAGS="-D_GNU_SOURCE=1"
        BASE_LDFLAGS=""
        ;;
esac
BUILD_CFLAGS="$CFLAGS $CPPFLAGS"
EXTRA_CFLAGS="$INCLUDE $BASE_CFLAGS"
BUILD_LDFLAGS="$LDFLAGS"
EXTRA_LDFLAGS="$BASE_LDFLAGS"
## These are common directories to find software packages
#for path in /usr/freeware /usr/pkg /usr/local; do
#    if test -d $path/include; then
#        EXTRA_CFLAGS="$EXTRA_CFLAGS -I$path/include"
#    fi
#    if test -d $path/lib; then
#        EXTRA_LDFLAGS="$EXTRA_LDFLAGS -L$path/lib"
#    fi
#done
CPPFLAGS="$CPPFLAGS $EXTRA_CFLAGS"
CFLAGS="$CFLAGS $EXTRA_CFLAGS"
LDFLAGS="$LDFLAGS $EXTRA_LDFLAGS"

dnl Check for tools
AC_LIBTOOL_WIN32_DLL
AC_PROG_LIBTOOL
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_MAKE_SET
if test -z "$host_alias"; then
    hostaliaswindres=
else
    hostaliaswindres="$host_alias-windres"
fi
AC_CHECK_PROGS(WINDRES, [windres $hostaliaswindres $host_os-windres])

dnl Check for compiler characteristics
AC_C_CONST

case "$host" in
    *-*-cygwin* | *-*-mingw32*)
        SOURCES="$srcdir/version.rc"
        EXE=".exe"
        if test "$build" != "$host"; then # cross-compiling
            # Default cross-compile location
            ac_default_prefix=/usr/local/cross-tools/i386-mingw32
        else
            # Look for the location of the tools and install there
            if test "$BUILD_PREFIX" != ""; then
                ac_default_prefix=$BUILD_PREFIX
            fi
        fi
        ;;
    *)
        SOURCES=""
        EXE=""
        ;;
esac

# Standard C sources
SOURCES="$SOURCES \
$srcdir/effect_position.c \
$srcdir/effect_stereoreverse.c \
$srcdir/effects_internal.c \
$srcdir/load_aiff.c \
$srcdir/load_voc.c \
$srcdir/mixer.c \
$srcdir/music.c"

find_lib()
{
    gcc_bin_path=[`$CC -print-search-dirs 2>/dev/null | fgrep programs: | sed 's/[^=]*=\(.*\)/\1/' | sed 's/:/ /g'`]
    gcc_lib_path=[`$CC -print-search-dirs 2>/dev/null | fgrep libraries: | sed 's/[^=]*=\(.*\)/\1/' | sed 's/:/ /g'`]
    env_lib_path=[`echo $LIBS $LDFLAGS | sed 's/-L[ ]*//g'`]
    for path in $gcc_bin_path $gcc_lib_path $env_lib_path /usr/lib /usr/local/lib; do
        lib=[`ls -- $path/$1 2>/dev/null | sort -r | sed 's/.*\/\(.*\)/\1/; q'`]
        if test x$lib != x; then
            echo $lib
            return
        fi
    done
}

dnl Check for SDL
SDL_VERSION=1.2.10
AM_PATH_SDL($SDL_VERSION,
            :,
            AC_MSG_ERROR([*** SDL version $SDL_VERSION not found!])
)
EXTRA_CFLAGS="$EXTRA_CFLAGS $SDL_CFLAGS"
EXTRA_LDFLAGS="$EXTRA_LDFLAGS $SDL_LIBS"

dnl Check command-line options

AC_ARG_ENABLE([music-cmd],
AC_HELP_STRING([--enable-music-cmd], [support an external music player [[default=yes]]]),
              [], [enable_music_cmd=yes])
if test x$enable_music_cmd = xyes; then
    SOURCES="$SOURCES $srcdir/music_cmd.c"
    EXTRA_CFLAGS="$EXTRA_CFLAGS -DCMD_MUSIC"
fi
AC_ARG_ENABLE([music-wave],
AC_HELP_STRING([--enable-music-wave], [enable streaming WAVE music [[default=yes]]]),
              [], [enable_music_wave=yes])
if test x$enable_music_wave = xyes; then
    SOURCES="$SOURCES $srcdir/wavestream.c"
    EXTRA_CFLAGS="$EXTRA_CFLAGS -DWAV_MUSIC"
fi
no_libmikmod=yes
libmikmod_maj=3
libmikmod_min=1
libmikmod_rev=10
libmikmod_ver="$libmikmod_maj.$libmikmod_min.$libmikmod_rev"
AC_ARG_ENABLE([music-libmikmod],
AC_HELP_STRING([--enable-music-libmikmod], [enable MOD music via external libmikmod [[default=no]]]),
              [], [enable_music_libmikmod=no])
if test x$enable_music_libmikmod = xyes; then
    AC_PATH_PROG(LIBMIKMOD_CONFIG, libmikmod-config, no, [$PATH])
    if test "$LIBMIKMOD_CONFIG" != "no" ; then
        no_libmikmod=no
        CFLAGS_SAVED="$CFLAGS"
        LIBS_SAVED="$LIBS"
        CFLAGS="$CFLAGS -DLIBMIKMOD_MUSIC `$LIBMIKMOD_CONFIG --cflags`"
        LIBS="$LIBS `$LIBMIKMOD_CONFIG --libs`"
        AC_MSG_CHECKING([for libmikmod - version >= $libmikmod_ver])
        AC_TRY_RUN([
#include "mikmod.h"
#include "stdio.h"

int main(int argc, char **argv)
{
    long maj=$libmikmod_maj,min=$libmikmod_min,rev=$libmikmod_rev,ver=MikMod_GetVersion();
    /*printf("(%d.%d.%d) ",ver>>16,(ver>>8)&0xff,ver&0xff);*/
    if(ver>=((maj<<16)|(min<<8)|(rev))) {
        printf("yes\n");
        return 0;
    }
    printf("no\n*** libmikmod is older than %d.%d.%d, not using.\n",maj,min,rev);
    return 1;
}
], EXTRA_CFLAGS="$EXTRA_CFLAGS -DLIBMIKMOD_MUSIC `$LIBMIKMOD_CONFIG --cflags`";EXTRA_LDFLAGS="$EXTRA_LDFLAGS `$LIBMIKMOD_CONFIG --libs`", CFLAGS="$CFLAGS_SAVED";LIBS="$LIBS_SAVED",
[echo $ac_n "cross compiling; assumed OK... $ac_c"])
    fi
fi

AC_ARG_ENABLE([music-mod],
AC_HELP_STRING([--enable-music-mod], [enable MOD music via mikmod [[default=yes]]]),
              [], [enable_music_mod=$no_libmikmod])
if test x$enable_music_mod = xyes -a x$enable_music_libmikmod = xno; then
    EXTRA_CFLAGS="$EXTRA_CFLAGS -DMOD_MUSIC -I\$(srcdir)/mikmod"
    SOURCES="$SOURCES $srcdir/mikmod/*.c"
fi
AC_ARG_ENABLE([music-midi],
AC_HELP_STRING([--enable-music-midi], [enable MIDI music via timidity [[default=yes]]]),
              [], [enable_music_midi=yes])
if test x$enable_music_midi = xyes; then
    EXTRA_CFLAGS="$EXTRA_CFLAGS -DMID_MUSIC"
    AC_ARG_ENABLE([music-timidity-midi],
AC_HELP_STRING([--enable-music-timidity-midi], [enable timidity MIDI output [[default=yes]]]),
                  [], [enable_music_timidity_midi=yes])
    if test x$enable_music_timidity_midi = xyes; then
        EXTRA_CFLAGS="$EXTRA_CFLAGS -DUSE_TIMIDITY_MIDI -I\$(srcdir)/timidity"
        SOURCES="$SOURCES $srcdir/timidity/*.c"
    fi
    AC_ARG_ENABLE([music-native-midi],
AC_HELP_STRING([--enable-music-native-midi], [enable native MIDI music output [[default=yes]]]),
                  [], [enable_music_native_midi=yes])
    if test x$enable_music_native_midi = xyes; then
        use_music_native_midi=no
        case "$host" in
            *-*-cygwin* | *-*-mingw32*)
                use_music_native_midi=yes
                EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lwinmm"
                ;;
            *-*-darwin*)
                use_music_native_midi=yes
                EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-framework,QuickTime -Wl,-framework,CoreServices"
                ;;
        esac
        if test x$use_music_native_midi = xyes; then
            EXTRA_CFLAGS="$EXTRA_CFLAGS -DUSE_NATIVE_MIDI -I\$(srcdir)/native_midi"
            SOURCES="$SOURCES $srcdir/native_midi/*.c"
        fi
    fi
    AC_ARG_ENABLE([music-native-midi-gpl],
AC_HELP_STRING([--enable-music-native-midi-gpl], [enable native MIDI on UNIX using GPL code [[default=no]]]),
                  [], [enable_music_native_midi_gpl=no])
    if test x$enable_music_native_midi_gpl = xyes; then
        use_music_native_midi_gpl=no
        case "$host" in
            *-*-linux* | *-*-freebsd*)
                use_music_native_midi_gpl=yes
                ;;
        esac
        if test x$use_music_native_midi_gpl = xyes; then
            EXTRA_CFLAGS="$EXTRA_CFLAGS -DUSE_NATIVE_MIDI -I\$(srcdir)/native_midi"
            SOURCES="$SOURCES $srcdir/native_midi_gpl/*.c"
        fi
    fi
fi
AC_ARG_ENABLE([music-ogg],
AC_HELP_STRING([--enable-music-ogg], [enable Ogg Vorbis music [[default=yes]]]),
              [], [enable_music_ogg=yes])
AC_ARG_ENABLE(music-ogg-tremor,
[  --enable-music-ogg-tremor   enable OGG music via libtremor [[default=no]]],
              [], enable_music_ogg_tremor=no)
AC_ARG_ENABLE([music-ogg-shared],
AC_HELP_STRING([--enable-music-ogg-shared], [dynamically load Ogg Vorbis support [[default=yes]]]),
              [], [enable_music_ogg_shared=yes])
if test x$enable_music_ogg = xyes; then
    if test x$enable_music_ogg_tremor = xyes; then
        AC_CHECK_HEADER([tremor/ivorbisfile.h], [have_tremor_hdr=yes])
        AC_CHECK_LIB([vorbisidec], [ov_open_callbacks], [have_tremor_lib=yes])
        if test x$have_tremor_hdr = xyes -a x$have_tremor_lib = xyes; then
            case "$host" in
                *-*-darwin*)
                    ogg_lib=[`find_lib libvorbisidec*.dylib`]
                    if test x$ogg_lib = x; then
                        ogg_lib=[`find_lib libvorbisidec.[0-9]`]
                    fi
                    if test x$ogg_lib = x; then
                        ogg_lib=[`find_lib libvorbisidec.[0-9]*`]
                    fi
                    ;;
                *-*-cygwin* | *-*-mingw32*)
                    ogg_lib=[`find_lib "vorbisidec*.dll"`]
                    ;;
                *)
                    ogg_lib=[`find_lib "libvorbisidec.so.[0-9]"`]
                    if test x$ogg_lib = x; then
                        ogg_lib=[`find_lib "libvorbisidec.so.[0-9]*"`]
                    fi
                    ;;
            esac
            SOURCES="$SOURCES $srcdir/*_ogg.c"
            EXTRA_CFLAGS="$EXTRA_CFLAGS -DOGG_MUSIC -DOGG_USE_TREMOR"
            if test x$enable_music_ogg_shared = xyes && test x$ogg_lib != x; then
                echo "-- dynamic libvorbisidec -> $ogg_lib"
                EXTRA_CFLAGS="$EXTRA_CFLAGS -DOGG_DYNAMIC=\\\"$ogg_lib\\\""
            else
                EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lvorbisidec"
            fi
        fi
    else
        AC_CHECK_HEADER([vorbis/vorbisfile.h], [have_ogg_hdr=yes])
        AC_CHECK_LIB([vorbisfile], [ov_open_callbacks], [have_ogg_lib=yes])
        if test x$have_ogg_hdr = xyes -a x$have_ogg_lib = xyes; then
            case "$host" in
                *-*-darwin*)
                    ogg_lib=[`find_lib libvorbisfile*.dylib`]
                    ;;
                *-*-cygwin* | *-*-mingw32*)
                    ogg_lib=[`find_lib "libvorbisfile*.dll"`]
                    ;;
                *)
                    ogg_lib=[`find_lib "libvorbisfile.so.[0-9]"`]
                    if test x$ogg_lib = x; then
                        ogg_lib=[`find_lib "libvorbisfile.so.[0-9]*"`]
                    fi
                    ;;
            esac
            SOURCES="$SOURCES $srcdir/*_ogg.c"
            EXTRA_CFLAGS="$EXTRA_CFLAGS -DOGG_MUSIC"
            if test x$enable_music_ogg_shared = xyes && test x$ogg_lib != x; then
                echo "-- dynamic libvorbisfile -> $ogg_lib"
                EXTRA_CFLAGS="$EXTRA_CFLAGS -DOGG_DYNAMIC=\\\"$ogg_lib\\\""
            else
                EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lvorbisfile -lvorbis -logg"
            fi
        fi
    fi
fi
AC_ARG_ENABLE([music-flac],
AC_HELP_STRING([--enable-music-flac], [enable FLAC music [[default=yes]]]),
              [], [enable_music_flac=yes])
AC_ARG_ENABLE([music-flac-shared],
AC_HELP_STRING([--enable-music-flac-shared],
              [dynamically load FLAC support [[default=yes]]]),
              [], [enable_music_flac_shared=yes])
if test x$enable_music_flac = xyes; then
    AC_CHECK_HEADER([FLAC/stream_decoder.h], [have_flac_hdr=yes])
    AC_CHECK_LIB([FLAC], [FLAC__stream_decoder_new], [have_flac_lib=yes])
    if test x$have_flac_hdr = xyes -a x$have_flac_lib = xyes; then
        case "$host" in
            *-*-darwin*)
                flac_lib=[`find_lib FLAC*.dylib`]
                ;;
            *-*-cygwin* | *-*-mingw32*)
                flac_lib=[`find_lib "libFLAC*.dll"`]
                ;;
            *)
                flac_lib=[`find_lib "libFLAC.so.[0-9]"`]
                if test x$flac_lib = x; then
                    flac_lib=[`find_lib "libFLAC.so.[0-9]*"`]
                fi
                ;;
        esac
        SOURCES="$SOURCES $srcdir/*_flac.c"
        EXTRA_CFLAGS="$EXTRA_CFLAGS -DFLAC_MUSIC"
        if test x$enable_music_flac_shared = xyes && test x$flac_lib != x; then
            echo "-- dynamic libFLAC -> $flac_lib"
            EXTRA_CFLAGS="$EXTRA_CFLAGS -DFLAC_DYNAMIC=\\\"$flac_lib\\\""
        else
            EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lFLAC"
        fi
    fi
fi
AC_ARG_ENABLE(music-mp3,
[  --enable-music-mp3      enable MP3 music via smpeg [[default=yes]]],
              , enable_music_mp3=yes)
if test x$enable_music_mp3 = xyes; then
    SMPEG_VERSION=0.4.3
    AM_PATH_SMPEG($SMPEG_VERSION, have_smpeg=yes, have_smpeg=no)
    if test x$have_smpeg = xyes; then
        AC_ARG_ENABLE([music-mp3-shared],
AC_HELP_STRING([--enable-music-mp3-shared], [dynamically load MP3 support [[default=yes]]]),
                      [], [enable_music_mp3_shared=yes])
        case "$host" in
            *-*-darwin*)
                smpeg_lib=[`find_lib libsmpeg*.dylib`]
                ;;
            *-*-cygwin* | *-*-mingw32*)
                smpeg_lib=[`find_lib "smpeg*.dll"`]
                ;;
            *)
                smpeg_lib=[`find_lib "libsmpeg*.so.[0-9]"`]
                if test x$smpeg_lib = x; then
                    smpeg_lib=[`find_lib "libsmpeg*.so.[0-9]*"`]
                fi
                ;;
        esac
        SOURCES="$SOURCES $srcdir/*_mp3.c"
        EXTRA_CFLAGS="$EXTRA_CFLAGS -DMP3_MUSIC $SMPEG_CFLAGS"
        if test x$enable_music_mp3_shared = xyes && test x$smpeg_lib != x; then
            echo "-- dynamic libsmpeg -> $smpeg_lib"
            EXTRA_CFLAGS="$EXTRA_CFLAGS -DMP3_DYNAMIC=\\\"$smpeg_lib\\\""
        else
            EXTRA_LDFLAGS="$EXTRA_LDFLAGS $SMPEG_LIBS"
        fi
    fi
fi
AC_ARG_ENABLE(music-mp3-mad-gpl,
AC_HELP_STRING([--enable-music-mp3-mad-gpl], [enable MP3 music via libmad GPL code [[default=no]]]),
                  [], [enable_music_mp3_mad_gpl=no])
if test x$enable_music_mp3_mad_gpl = xyes; then
    AC_MSG_CHECKING(for libmad headers)
    have_libmad=no
    AC_TRY_COMPILE([
     #include "mad.h"
    ],[
    ],[
    have_libmad=yes
    ])
    AC_MSG_RESULT($have_libmad)
    if test x$have_libmad = xyes; then
        SOURCES="$SOURCES $srcdir/music_mad.c"
        EXTRA_CFLAGS="$EXTRA_CFLAGS -DMP3_MAD_MUSIC"
        EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lmad"
    fi
fi

OBJECTS=`echo $SOURCES | sed 's,[[^ ]]*/\([[^ ]]*\)\.c,$(objects)/\1.lo,g'`
OBJECTS=`echo $OBJECTS | sed 's,[[^ ]]*/\([[^ ]]*\)\.rc,$(objects)/\1.o,g'`

dnl Expand the sources and objects needed to build the library
AC_SUBST(ac_aux_dir)
AC_SUBST(SOURCES)
AC_SUBST(OBJECTS)
AC_SUBST(BUILD_CFLAGS)
AC_SUBST(EXTRA_CFLAGS)
AC_SUBST(BUILD_LDFLAGS)
AC_SUBST(EXTRA_LDFLAGS)
AC_SUBST(EXE)
AC_SUBST(WINDRES)
AC_SUBST(SDL_CFLAGS)
AC_SUBST(SDL_LIBS)

AC_OUTPUT([
    Makefile SDL_mixer.spec SDL_mixer.qpg
], [
    : >build-deps
    if test x"$MAKE" = x; then MAKE=make; fi; $MAKE depend
])