dnl Process this file with autoconf to produce a configure script.
AC_INIT(SpiralSynthModular.C)

dnl Automake (can't use AC_CONFIG_HEADER - get complaints!)
AM_CONFIG_HEADER(config.h)

dnl Checks for programs.
AC_PROG_CC
AC_PROG_CPP
AC_PROG_INSTALL

dnl Checks for header files.
AC_HEADER_STDC

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE

dnl Check plugin directory
AC_ARG_WITH(plugindir,
  [  --with-plugindir=dir    give the plugin directory],
  plugindir="$withval",
  plugindir="/usr/lib/SpiralPlugins")
AC_SUBST(PLUGINDIR, $plugindir)

dnl Check whether to enable debugging
AC_ARG_ENABLE(debug,  [  --enable-debug          enable debugging ],
        ac_arg_debug="Y", ac_arg_debug="N")

if test $ac_arg_debug = "Y" ; then
	CFLAGS="-pipe -Wall -O0 -ggdb "
	CXXFLAGS="-pipe -Wall -O0 -ggdb "
else
	CFLAGS="-pipe -Wall -O3 -ffast-math -DNO_DEBUG -Wno-unused "
	CXXFLAGS="-pipe -Wall -O3 -ffast-math -DNO_DEBUG -Wno-unused "
fi

dnl build plugin list - plugins that do not require an optional component
dnl (i.e. Jack, and LADSPA)

PLUGINLIST="AmpPlugin AnotherFilterPlugin BeatMatchPlugin ControllerPlugin \
CounterPlugin DelayPlugin DiskWriterPlugin DistributorPlugin EchoPlugin \
EnvFollowerPlugin EnvelopePlugin FilterPlugin FlipflopPlugin FormantFilterPlugin \
KeyboardPlugin LFOPlugin LogicPlugin MasherPlugin MatrixPlugin \
MeterPlugin MidiPlugin MixSwitchPlugin MixerPlugin MoogFilterPlugin NoisePlugin \
NoteSnapPlugin OperatorPlugin OscillatorPlugin OutputPlugin PoshSamplerPlugin \
RingModPlugin SVFilterPlugin SampleHoldPlugin ScopePlugin SeqSelectorPlugin \
SmoothPlugin SpiralLoopPlugin SplitSwitchPlugin SplitterPlugin StereoMixerPlugin \
StreamPlugin SwitchPlugin TransposePlugin TrigPlugin WaveShaperPlugin \
WaveTablePlugin XFadePlugin"

dnl Check whether jack is present or has been disabled
jack_message=""
AC_ARG_ENABLE(
    jack,
    [  --disable-jack          Do not build JackPlugin],
    [build_jack="n" ; jack_message="manually disabled"],
    [build_jack="y"]
)
if test "$build_jack" = "y"; then
   AC_CHECK_HEADER(jack/jack.h, [build_jack="y"], [build_jack="n" ; jack_message="No jack/jack.h found"])
fi
if test "$build_jack" = "y"; then
   AC_CHECK_LIB(jack, jack_client_new, [build_jack="y"], [build_jack="n" ; jack_message="No libjack found"])
fi
if test "$build_jack" = "y" ; then
   PLUGINLIST="JackPlugin $PLUGINLIST"
fi

dnl Check whether LADSPA is present or has been disabled
ladspa_message=""
AC_ARG_ENABLE(
    ladspa,
    [  --disable-ladspa        Do not build LADSPAPlugin],
    [build_ladspa="n" ; ladspa_message="manually disabled"],
    [build_ladspa="y"]
)
if test "$build_ladspa" = "y"; then
   AC_CHECK_HEADER(ladspa.h, [build_ladspa="y"], [build_ladspa="n" ; ladspa_message="No ladspa.h found"])
fi
if test "$build_ladspa" = "y" ; then
   PLUGINLIST="LADSPAPlugin $PLUGINLIST"
fi

dnl build plugin list
echo "$PLUGINLIST" > SpiralSound/PluginList.txt

dnl Check whether liblrdf is present or has been disabled
lrdf_message=""
AC_ARG_ENABLE(
    lrdf,
    [  --disable-lrdf          Disable liblrdf for LADSPA Plugin],
    [use_liblrdf="n" ; lrdf_message="manually disabled"],
    [use_liblrdf="y"]
)
if test "$build_ladspa" = "n" ; then
   use_liblrdf="n"
   lrdf_message="LADSPAPlugin not used"
fi
if test "$use_liblrdf" = "y"; then
   AC_CHECK_HEADER(lrdf.h, [use_liblrdf="y"], [use_liblrdf="n" ; lrdf_message="No lrdf.h found"])
fi
if test "$use_liblrdf" = "y"; then
   AC_CHECK_LIB(lrdf, lrdf_init, [use_liblrdf="y"], [use_liblrdf="n" ; lrdf_message="No liblrdf found"])
fi
if test "$use_liblrdf" = "y"; then
   AC_DEFINE(HAVE_LIBLRDF, , [Enable liblrdf support for LADSPA Plugin])
   LRDFLIBS="-llrdf"
   AC_SUBST(LRDFLIBS)
fi

dnl Check if POSIX SHM is present or has been disabled
shm_message=""
AC_ARG_ENABLE(
    posix-shm,
    [  --disable-posix-shm     Disable POSIX SHM for LADSPA Plugin],
    [use_posix_shm="n" ; shm_message="manually disabled"],
    [use_posix_shm="y"]
)
if test "$build_ladspa" = "n" ; then
   use_posix_shm="n"
   shm_message="LADSPAPlugin not used"
elif test "$use_liblrdf" = "n" ; then
   use_posix_shm="n"
   shm_message="liblrdf not used"
fi
if test "$use_posix_shm" = "y"; then
   AC_MSG_CHECKING([POSIX SHM support ])
   if test -d /dev/shm -a -w /dev/shm ; then
       AC_DEFINE(USE_POSIX_SHM, ,[Enable POSIX SHM support for LADSPA Plugin])
       AC_MSG_RESULT(found.)
       SHMLIBS="-lrt"
       AC_SUBST(SHMLIBS)
    else
       AC_MSG_RESULT(not found.)
       use_posix_shm="n"
       shm_message="/dev/shm not found";
    fi
fi

dnl Check whether alsa-midi is present or has been disabled
amidi_message=""
AC_ARG_ENABLE(
    alsa_midi,
    [  --disable-alsa-midi     Disable alsa midi (use OSS)],
    [use_alsa_midi="n"; amidi_message="manually disabled"],
    [use_alsa_midi="y"]
)
if test "$use_alsa_midi" = "y"; then
   AC_CHECK_HEADER(alsa/asoundlib.h, [use_alsa_midi="y"], [use_alsa_midi="n" ; amidi_message="No alsa/asoundlib.h found"])
fi
if test "$use_alsa_midi" = "y"; then
   AC_CHECK_LIB(asound, snd_seq_open, [use_alsa_midi="y"], [use_alsa_midi="n" ; amidi_message="No libasound found"])
fi
if test "$use_alsa_midi" = "y"; then
   AC_DEFINE(USE_ALSA_MIDI, , [Use ALSA MIDI not OSS])
   AMIDILIBS="-lasound"
   AC_SUBST(AMIDILIBS)
else
   AC_DEFINE(USE_OSS_MIDI, , [Use OSS MIDI not ALSA])
fi

dnl Check whether libsndfile is present or has been disabled
sndfile_message=""
AC_ARG_ENABLE(
    sndfile,
    [  --disable-sndfile       Disable libsndfile for waveform loading],
    [use_sndfile="n" ; sndfile_message="manually disabled"],
    [use_sndfile="y"]
)
if test "$use_sndfile" = "y"; then
   AC_CHECK_HEADER(sndfile.h, [use_sndfile="y"], [use_sndfile="n" ; sndfile_message="No sndfile.h found"])
fi
if test "$use_sndfile" = "y"; then
   AC_CHECK_LIB(sndfile, sf_open, [use_sndfile="y"], [use_sndfile="n" ; sndfile_message="No libXXXX found"])
fi
if test "$use_sndfile" = "y"; then
   AC_DEFINE(USE_LIBSNDFILE, , [Enable libsndfile for waveform loading])
   SFLIBS="-lsndfile"
   AC_SUBST(SFLIBS)
fi

dnl Checks for library functions.

AC_CHECK_HEADERS(math.h)
AC_CHECK_LIB(m, sin)

dnl AC_CHECK_HEADERS(X11/Xlib.h)
dnl AC_CHECK_LIB(X11, XDisplayName)
dnl AC_CHECK_LIB(Xext, main)

AC_PATH_PROG(FLTK_CONFIG, fltk-config, no)
if test "$FLTK_CONFIG" = "no"; then
  AC_PATH_XTRA
  LIBGL=""
  CPPFLAGS="$CPPFLAGS $X_CFLAGS"
  AC_CHECK_HEADERS(GL/gl.h)
  if test $ac_cv_header_GL_gl_h = "yes" ; then
    AC_CHECK_LIB(GL, glBegin, LIBGL="-lGL")
  fi
  AC_CHECK_HEADERS(FL/Fl.h)
  if test $ac_cv_header_FL_Fl_h = "no" ; then
    echo "*** FLTK headers missing."
    exit 1
  fi
  AC_CHECK_LIB(fltk, main)
  FLTK_CXXFLAGS="$X_CFLAGS"
  FLTK_CFLAGS="$FLTK_CXXFLAGS"
  FLTK_LIBS="$X_LIBS -lfltk $LIBGL"
else
  FLTK_CXXFLAGS=`$FLTK_CONFIG $fltk_config_args --cxxflags`
  FLTK_CFLAGS=`$FLTK_CONFIG $fltk_config_args --cxxflags`
  FLTK_LIBS=`$FLTK_CONFIG $fltk_config_args --ldflags`
dnl This caused problems for debian users,
dnl It would be nice to find a more robust way of doing it.
dnl  if test "${FLTK_LIBS/*-rpath*/yes}" != "yes"; then
dnl    echo "*** FLTK needs to be configured with --enable-shared"
dnl   exit 1
dnl  fi
fi
AC_SUBST(FLTK_CXXFLAGS)
AC_SUBST(FLTK_CFLAGS)
AC_SUBST(FLTK_LIBS)

AC_CHECK_HEADERS(dlfcn.h)
AC_CHECK_LIB(dl, dlopen)

dnl Do we need png?????
dnl AC_CHECK_HEADERS(png.h)
dnl AC_CHECK_LIB(png, png_get_copyright)

dnl This is normally done with libtool but since we aren't using libtool
dnl yet to it here.

dnl FIXME: forced to add -fPIC here..
CFLAGS="$CFLAGS -fPIC"
CXXFLAGS="$CFLAGS -fPIC"

AC_SUBST(CFLAGS)
AC_SUBST(CXXFLAGS)
AC_SUBST(PLUGINLIST)

dnl Modify the output files.
AC_OUTPUT(
SpiralSound/Plugins/AmpPlugin/Makefile
SpiralSound/Plugins/AnotherFilterPlugin/Makefile
SpiralSound/Plugins/BeatMatchPlugin/Makefile
SpiralSound/Plugins/ControllerPlugin/Makefile
SpiralSound/Plugins/CounterPlugin/Makefile
SpiralSound/Plugins/DelayPlugin/Makefile
SpiralSound/Plugins/DiskWriterPlugin/Makefile
SpiralSound/Plugins/DistributorPlugin/Makefile
SpiralSound/Plugins/EchoPlugin/Makefile
SpiralSound/Plugins/EnvFollowerPlugin/Makefile
SpiralSound/Plugins/EnvelopePlugin/Makefile
SpiralSound/Plugins/FilterPlugin/Makefile
SpiralSound/Plugins/FlipflopPlugin/Makefile
SpiralSound/Plugins/FormantFilterPlugin/Makefile
SpiralSound/Plugins/JackPlugin/Makefile
SpiralSound/Plugins/KeyboardPlugin/Makefile
SpiralSound/Plugins/LADSPAPlugin/Makefile
SpiralSound/Plugins/LFOPlugin/Makefile
SpiralSound/Plugins/LogicPlugin/Makefile
SpiralSound/Plugins/MasherPlugin/Makefile
SpiralSound/Plugins/MatrixPlugin/Makefile
SpiralSound/Plugins/MeterPlugin/Makefile
SpiralSound/Plugins/MidiPlugin/Makefile
SpiralSound/Plugins/MixSwitchPlugin/Makefile
SpiralSound/Plugins/MixerPlugin/Makefile
SpiralSound/Plugins/MoogFilterPlugin/Makefile
SpiralSound/Plugins/NoisePlugin/Makefile
SpiralSound/Plugins/NoteSnapPlugin/Makefile
SpiralSound/Plugins/OperatorPlugin/Makefile
SpiralSound/Plugins/OscillatorPlugin/Makefile
SpiralSound/Plugins/OutputPlugin/Makefile
SpiralSound/Plugins/PoshSamplerPlugin/Makefile
SpiralSound/Plugins/RingModPlugin/Makefile
SpiralSound/Plugins/SVFilterPlugin/Makefile
SpiralSound/Plugins/SampleHoldPlugin/Makefile
SpiralSound/Plugins/ScopePlugin/Makefile
SpiralSound/Plugins/SeqSelectorPlugin/Makefile
SpiralSound/Plugins/SmoothPlugin/Makefile
SpiralSound/Plugins/SpiralLoopPlugin/Makefile
SpiralSound/Plugins/SplitSwitchPlugin/Makefile
SpiralSound/Plugins/SplitterPlugin/Makefile
SpiralSound/Plugins/StereoMixerPlugin/Makefile
SpiralSound/Plugins/StreamPlugin/Makefile
SpiralSound/Plugins/SwitchPlugin/Makefile
SpiralSound/Plugins/TransposePlugin/Makefile
SpiralSound/Plugins/TrigPlugin/Makefile
SpiralSound/Plugins/WaveShaperPlugin/Makefile
SpiralSound/Plugins/WaveTablePlugin/Makefile
SpiralSound/Plugins/XFadePlugin/Makefile
SpiralSynthPluginLocation.h
Makefile
)

echo -e "\nConfig options:"
echo -n "libsndfile support for wave loading - "
if test "$use_sndfile" = "y"; then
   echo "Enabled"
else
   echo "Disabled - $sndfile_message"
fi
echo -n "        ALSA support for MidiPlugin - "
if test "$use_alsa_midi" = "y"; then
   echo "Enabled"
else
   echo "Disabled - $amidi_message - Using OSS instead"
fi
echo -n "      Jack support (via JackPlugin) - "
if test "$build_jack" = "y"; then
   echo "Enabled"
else
   echo "Disabled - $jack_message"
fi
echo -n "  LADSPA support (via LADSPAPlugin) - "
if test "$build_ladspa" = "y"; then
   echo "Enabled"
else
   echo "Disabled - $ladspa_message"
fi
echo -n "   liblrdf support for LADSPAPlugin - "
if test "$use_liblrdf" = "y"; then
   echo "Enabled"
else
   echo "Disabled - $lrdf_message"
fi
echo -n " POSIX SHM support for LADSPAPlugin - "
if test "$use_posix_shm" = "y"; then
   echo "Enabled"
else
   echo "Disabled - $shm_message"
fi
echo ""