AC_INIT(configure.in)
AC_C_BIGENDIAN
AC_CANONICAL_SYSTEM

AC_SUBST(target)
AC_SUBST(target_alias)
AC_SUBST(target_cpu)
AC_SUBST(target_os)
AC_SUBST(target_vendor)



echo -n "checking whether x86 architecture... "
def_arch_x86=0
case $target_cpu in
  "i386" | "i486" | "i586" | "i686" | "i786")
    echo "yes"
    def_arch_x86=1;;
  *)
    echo "no";;
esac
AC_DEFINE_UNQUOTED(ARCH_X86,$def_arch_x86,[Define to 1 if you build for x86 architecture.])


AC_MSG_CHECKING([whether UNIX98 compatible])
AC_LANG_SAVE
AC_LANG_C
AC_TRY_RUN([
#ifndef _GNU_SOURCE
#define _GNU_SOURCE 1
#endif
#include <features.h>
void main(void) {
#if _XOPEN_SOURCE >= 500
exit(0); /* UNIX98 compatible */
#else
exit(-1); /* not UNIX98 compatible */
#endif
}
],
have_unix98="yes",
have_unix98="no",
have_unix98="no"
)
AC_LANG_RESTORE
AC_MSG_RESULT([$have_unix98])
if test "$have_unix98" = "no"; then
    if test "x$HAVE_UNIX98" = "x"; then
        echo "LinuxSampler only runs on UNIX98 compatible systems, which is mandatory for"
        echo "pthread_mutexattr_settype() call in Mutex.cpp. You may want to run
        echo "./configure with environment variable HAVE_UNIX98=1 in case you think you
        echo "have a UNIX98 compatible system."
        exit -1;
    fi
fi


# Checks for available audio and MIDI systems / drivers
# (we throw an error if there's not at least one system for audio output and MIDI input available)
have_midi_input_driver="false"
have_audio_output_driver="false"

AC_CHECK_HEADER(alsa/asoundlib.h,
    AC_CHECK_LIB(asound, main,
                             have_alsa="true"
                             ,
                             have_alsa="false"
                )
                ,
                have_alsa="false"
)
if test "$have_alsa" = "true"; then
    have_midi_input_driver="true"
    have_audio_output_driver="true";
fi
AM_CONDITIONAL(HAVE_ALSA, test $have_alsa = "true")
AC_DEFINE_UNQUOTED(HAVE_ALSA,$have_alsa,[Define to 1 if you have ALSA installed.])


echo -n "checking Alsa version... "
AC_LANG_SAVE
AC_LANG_C
AC_TRY_RUN([
#include <alsa/asoundlib.h>
void main(void) {
/* ensure backward compatibility */
#if !defined(SND_LIB_MAJOR) && defined(SOUNDLIB_VERSION_MAJOR)
#define SND_LIB_MAJOR SOUNDLIB_VERSION_MAJOR
#endif
exit(SND_LIB_MAJOR);
}
],
alsa_major=0,
alsa_major=$?,
alsa_major=0
)
AC_TRY_RUN([
#include <alsa/asoundlib.h>
void main(void) {
/* ensure backward compatibility */
#if !defined(SND_LIB_MINOR) && defined(SOUNDLIB_VERSION_MINOR)
#define SND_LIB_MINOR SOUNDLIB_VERSION_MINOR
#endif
exit(SND_LIB_MINOR);
}
],
alsa_minor=0,
alsa_minor=$?,
alsa_minor=0
)
AC_TRY_RUN([
#include <alsa/asoundlib.h>
void main(void) {
/* ensure backward compatibility */
#if !defined(SND_LIB_SUBMINOR) && defined(SOUNDLIB_VERSION_SUBMINOR)
#define SND_LIB_SUBMINOR SOUNDLIB_VERSION_SUBMINOR
#endif
exit(SND_LIB_SUBMINOR);
}
],
alsa_subminor=0,
alsa_subminor=$?,
alsa_subminor=0
)
AC_LANG_RESTORE
echo "$alsa_major.$alsa_minor.$alsa_subminor";
AC_DEFINE_UNQUOTED(ALSA_MAJOR,$alsa_major,[Define to the major version number of your Alsa installation.])
AC_DEFINE_UNQUOTED(ALSA_MINOR,$alsa_minor,[Define to the minor version number of your Alsa installation.])
AC_DEFINE_UNQUOTED(ALSA_SUBMINOR,$alsa_subminor,[Define to the subminor version number of your Alsa installation.])


# JACK
PKG_CHECK_MODULES(JACK, jack, HAVE_JACK=true, HAVE_JACK=false)
AC_SUBST(JACK_LIBS)
AC_SUBST(JACK_CFLAGS)
if test $HAVE_JACK = false; then
    HAVE_JACK=0;
else
    HAVE_JACK=1
    have_audio_output_driver="true";
fi
AM_CONDITIONAL(HAVE_JACK, test $HAVE_JACK = 1)
AC_DEFINE_UNQUOTED(HAVE_JACK,$HAVE_JACK,[Define to 1 if you have JACK installed.])


if test "$have_midi_input_driver=" = "false"; then
    echo "No supported MIDI input system found!"
    echo "Sorry, LinuxSampler only supports ALSA as MIDI input driver at the moment!"
    exit -1;
fi
if test "$have_audio_output_driver=" = "false"; then
    echo "No supported audio output system found!"
    echo "Sorry, LinuxSampler only supports ALSA and JACK as audio output driver at the moment!"
    exit -1;
fi


AM_CONFIG_HEADER(config.h)
AM_INIT_AUTOMAKE(linuxsampler, 0.2)

AC_LANG_CPLUSPLUS
AC_PROG_CXX
AM_PROG_LIBTOOL

AC_OUTPUT(Makefile src/Makefile src/network/Makefile src/engines/Makefile src/engines/gig/Makefile src/engines/common/Makefile src/common/Makefile src/lib/Makefile src/lib/fileloader/Makefile src/lib/fileloader/libgig/Makefile src/testcases/Makefile src/drivers/Makefile src/drivers/audio/Makefile src/drivers/midi/Makefile)