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=0
MICRO_VERSION=0
INTERFACE_AGE=0
BINARY_AGE=0
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 Setup for automake
AM_INIT_AUTOMAKE(mixer, $VERSION)

dnl Check for tools

AC_PROG_MAKE_SET
AC_PROG_CC
AM_PROG_LIBTOOL
AC_PROG_INSTALL

dnl The alpha architecture needs special flags for binary portability
AC_CANONICAL_TARGET
case "$target" in
    alpha*-*-linux*)
        CFLAGS="$CFLAGS -mcpu=ev4 -Wa,-mall"
        ;;
esac

dnl Check for SDL 0.11.2
AM_PATH_SDL(0.11.2)
CFLAGS="$CFLAGS $SDL_CFLAGS"
LIBS="$LIBS $SDL_LIBS"

dnl Check command-line options
AC_ARG_ENABLE(music-cmd,
[  --enable-music-cmd      support an external music player [default=yes]],
              , enable_music_cmd=yes)
if test x$enable_music_cmd = xyes; then
    CFLAGS="$CFLAGS -DCMD_MUSIC"
fi
AC_ARG_ENABLE(music-wave,
[  --enable-music-wave     enable streaming WAVE music [default=yes]],
              , enable_music_wave=yes)
if test x$enable_music_wave = xyes; then
    CFLAGS="$CFLAGS -DWAV_MUSIC"
fi
AC_ARG_ENABLE(music-mod,
[  --enable-music-mod      enable MOD music via mikmod [default=yes]],
              , enable_music_mod=yes)
if test x$enable_music_mod = xyes; then
    CFLAGS="$CFLAGS -DMOD_MUSIC -I\$(top_srcdir)/mikmod"
    MUSIC_SUBDIRS="$MUSIC_SUBDIRS mikmod"
fi
AC_ARG_ENABLE(music-midi,
[  --enable-music-midi     enable MIDI music via timidity [default=yes]],
              , enable_music_midi=yes)
if test x$enable_music_midi = xyes; then
    CFLAGS="$CFLAGS -DMID_MUSIC -I\$(top_srcdir)/timidity"
    MUSIC_SUBDIRS="$MUSIC_SUBDIRS timidity"
fi
AC_ARG_ENABLE(music-mp3,
[  --enable-music-mp3      enable MP3 music via smpeg [default=yes]],
              , enable_music_mp3=yes)
if test x$enable_music_mp3 = xyes; then
    AC_MSG_CHECKING(for SMPEG headers and libraries)
    have_smpeg=no
    AC_TRY_COMPILE([
     #include <smpeg/smpeg.h>
    ],[
    ],[
    have_smpeg=yes
    ])
    AC_MSG_RESULT($have_smpeg)
    if test x$have_smpeg = xyes; then
        CFLAGS="$CFLAGS -DMP3_MUSIC"
        LIBS="$LIBS -lsmpeg"
    fi
fi

dnl Add Makefile conditionals
AC_SUBST(MUSIC_SUBDIRS)
AM_CONDITIONAL(USE_MIKMOD, test x$enable_music_mod = xyes)
AM_CONDITIONAL(USE_TIMIDITY, test x$enable_music_midi = xyes)

# Finally create all the generated files
AC_OUTPUT([
Makefile
mikmod/Makefile
timidity/Makefile
])