dnl Process this file with autoconf to produce a configure script.
AC_INIT
AC_PREREQ(2.59)
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_SRCDIR([src/chunk.c])

AC_CANONICAL_HOST
AC_CANONICAL_TARGET

MHW_VERSION=1.4.24

AM_INIT_AUTOMAKE(mhWaveEdit,$MHW_VERSION)
# This is disabled in releases because timestamps can not be preserved through
# the current Github-based release flow.
AM_MAINTAINER_MODE([disable])

dnl Check for libintl
AM_GNU_GETTEXT([external])

PKG_PROG_PKG_CONFIG

dnl Various options

AC_ARG_WITH(double-samples,
[  --with-double-samples   Use double precision floating point numbers for sound
                          processing (slows down program but may increase 
                          quality for 24/32-bit samplerates).],
AC_DEFINE([USE_DOUBLE_SAMPLES],[],
  [Use gdouble instead of gfloat as sample data type]) 
MHW_DOUBLE="yes")

AC_DEFUN([AC_WITHOUT_CHECK_CASTS],[
	if test "x$withval" = "xno" ; then 
	AC_DEFINE(GTK_NO_CHECK_CASTS,[],[If defined, disables GTK+ type checking])
	fi
])

AC_ARG_WITH(check-casts,
[  --without-check-casts   Do not type-check GTK casts.],AC_WITHOUT_CHECK_CASTS)

AC_DEFUN([AC_ENABLE_WERROR],[
	if test "x$enableval" = "xyes" ; then
	AM_CFLAGS="$AM_CFLAGS -Werror"
	fi
])

AC_ARG_ENABLE(werror,
[  --enable-werror         Treat warnings as errors during compilation],
AC_ENABLE_WERROR)

DEFAULT_DRIVER=auto
AC_ARG_WITH(default-driver,
[  --with-default-driver=driver 
                           Choose default sound driver (one of oss,alsa,pulse,
                           jack,sun,pa,sdl,esound,arts,auto; default: auto)],
  DEFAULT_DRIVER=$withval)
AC_DEFINE_UNQUOTED(DEFAULT_DRIVER,"${DEFAULT_DRIVER}",[Default sound driver])

DEFAULT_LADSPA_PATH="/usr/lib/ladspa:/usr/local/lib/ladspa"
AC_ARG_WITH(default-ladspa-path,
[  --with-default-ladspa-path=path 
                           Path to use if LADSPA_PATH variable is not set 
                           (default: "/usr/lib/ladspa:/usr/local/lib/ladspa")],
DEFAULT_LADSPA_PATH=$withval)
AC_DEFINE_UNQUOTED(DEFAULT_LADSPA_PATH,"${DEFAULT_LADSPA_PATH}",[Default path for LADSPA plugins])

DEFAULT_MIXERAPP=xmixer
AC_ARG_WITH(default-mixerapp,
[  --with-default-mixerapp=appname
                           Default command for "launch mixer" button
                           (default: "xmixer")],
DEFAULT_MIXERAPP=$withval)
AC_DEFINE_UNQUOTED(DEFAULT_MIXERAPP,"${DEFAULT_MIXERAPP}",[Default mixer application])

FIXED_DATE_STR="__DATE__ (actual compile date)"
FIXED_TIME_STR="__TIME__ (actual compile time)"
AC_ARG_WITH(build-date,
[  --with-build-date=str   Fixed string to use instead of __DATE__],
if test "x$withval" != "xno" ; then
AC_DEFINE_UNQUOTED(FIXED_DATE,"${withval}",[Fixed build date])
FIXED_DATE_STR=${withval}
fi
)

AC_ARG_WITH(build-time,
[  --with-build-time=str   Fixed string to use instead of __TIME__],
if test "x$withval" != "xno" ; then
AC_DEFINE_UNQUOTED(FIXED_TIME,"${withval}",[Fixed build date])
FIXED_TIME_STR=${withval}
fi
)

dnl Checks for programs.
AC_PROG_CC
AC_PROG_GCC_TRADITIONAL
AC_PROG_LN_S
AC_PROG_MAKE_SET

dnl Checks for libraries.
dnl Replace `main' with a function in -libs:
AC_CHECK_LIB(ibs, main)
AC_CHECK_LIB(m, round)

dnl This is needed for PortAudio under GNU/Linux...
AC_CHECK_LIB(pthread,pthread_create)

dnl Check for libsndfile

HAVE_SNDFILE=yes
SKIP_SNDFILE_CHECK=no
SNDFILE_LIBS=""
SNDFILE_CFLAGS=""

AC_DEFUN([AC_WITH_LIBSNDFILE],[
	if test "x$withval" = "xno" ; then 
		HAVE_SNDFILE=no
	else
		SNDFILE_LIBS="-L$withval/lib -lsndfile -lm"
		SNDFILE_CFLAGS="-I$withval/include"
		SKIP_SNDFILE_CHECK=yes
	fi
])

AC_ARG_WITH(libsndfile,[  --with-libsndfile=prefix Prefix where libsndfile is installed (optional)
  --without-libsndfile    Don't use libsndfile library],AC_WITH_LIBSNDFILE)

if test "x$HAVE_SNDFILE" = "xyes" -a "x$SKIP_SNDFILE_CHECK" = "xno"; then
	PKG_CHECK_MODULES(SNDFILE, sndfile, , HAVE_SNDFILE=no)
fi

if test "x$HAVE_SNDFILE" = "xyes" ; then
	AC_DEFINE(HAVE_LIBSNDFILE,[],[Use libsndfile library])
fi

AC_SUBST(SNDFILE_LIBS)
AC_SUBST(SNDFILE_CFLAGS)

dnl Check for libsamplerate

HAVE_LIBSAMPLERATE=yes
SKIP_LIBSAMPLERATE_CHECK=no
LIBSAMPLERATE_LIBS=""
LIBSAMPLERATE_CFLAGS=""

AC_DEFUN([AC_WITH_LIBSAMPLERATE],[
	if test "x$withval" = "xno" ; then 
		HAVE_LIBSAMPLERATE=no
	else
		LIBSAMPLERATE_LIBS="-L$withval/lib -lsamplerate"
		LIBSAMPLERATE_CFLAGS="-I$withval/include"
		SKIP_LIBSAMPLERATE_CHECK=yes
	fi
])

AC_ARG_WITH(libsamplerate,[  --with-libsamplerate=prefix Prefix where libsamplerate is installed (optional)
  --without-libsamplerate Don't use libsamplerate library],AC_WITH_LIBSAMPLERATE)

if test "x$HAVE_LIBSAMPLERATE" = "xyes" -a "x$SKIP_LIBSAMPLERATE_CHECK" = "xno"; then
	PKG_CHECK_MODULES(LIBSAMPLERATE, samplerate, , HAVE_LIBSAMPLERATE=no)
fi

if test "x$HAVE_LIBSAMPLERATE" = "xyes" ; then
	AC_DEFINE(HAVE_LIBSAMPLERATE,[],[Use libsamplerate library])
fi

AC_SUBST(LIBSAMPLERATE_LIBS)
AC_SUBST(LIBSAMPLERATE_CFLAGS)

dnl Check for PortAudio

PORTAUDIO_LIBS=""
MHW_HAVE_PORTAUDIO=yes

AC_ARG_WITH(portaudio,[  --without-portaudio     Don't use portaudio library],
if test "x$withval" = "xno"; then
MHW_HAVE_PORTAUDIO=no
fi
)

AC_CHECK_HEADER(portaudio.h,mhw_found_header=yes,mhw_found_header=no)
if test "x$mhw_found_header" = "xno"; then
MHW_HAVE_PORTAUDIO=no
fi

if test "x$MHW_HAVE_PORTAUDIO" = "xyes"; then
AC_CHECK_LIB(portaudio,Pa_Initialize,MHW_HAVE_PORTAUDIO=yes,MHW_HAVE_PORTAUDIO=no)
fi

if test "x$MHW_HAVE_PORTAUDIO" = "xyes"; then
AC_CHECK_TYPE(PaTimestamp,,MHW_HAVE_PORTAUDIO=no,[[#include <portaudio.h>]])
fi

if test "x$MHW_HAVE_PORTAUDIO" = "xyes"; then
	AC_DEFINE(HAVE_PORTAUDIO,[],[Enable PortAudio sound driver])
	PORTAUDIO_LIBS="-lportaudio $PORTAUDIO_LIBS"
fi

AC_SUBST(PORTAUDIO_LIBS)

dnl Check for SDL

SKIP_SDL_TEST=no
MHW_HAVE_SDL=no

AC_DEFUN([AC_WITHOUT_SDL],[
	if test "x$withval" = "xno" ; then
		SKIP_SDL_TEST=yes
	fi
])

AC_ARG_WITH(sdl,[  --without-sdl           Don't use SDL library],AC_WITHOUT_SDL)

if test "x$SKIP_SDL_TEST" = "xno"; then
	AM_PATH_SDL(1.2.3,
	 AC_DEFINE(HAVE_SDL,[],[Enable SDL sound driver]) 
	 MHW_HAVE_SDL=yes)
fi

dnl Check for AlsaLib

ALSALIB_LIBS=""

AC_CHECK_LIB(asound,snd_pcm_open,HAVE_ALSALIB=yes,HAVE_ALSALIB=no)

AC_DEFUN([AC_WITHOUT_ALSALIB],[
	if test "x$withval" = "xno" ; then
		HAVE_ALSALIB=no
	fi
])

AC_ARG_WITH(alsalib,[  --without-alsalib       Don't compile ALSA-lib driver],AC_WITHOUT_ALSALIB)

AC_CHECK_HEADER(alsa/asoundlib.h,mhw_found_header=yes,mhw_found_header=no)
if test "x$mhw_found_header" = "xno"; then
   HAVE_ALSALIB="no"
fi

if test "x$HAVE_ALSALIB" = "xyes"; then
	ALSALIB_LIBS="-lasound"
	AC_DEFINE(HAVE_ALSALIB,[],[Enable ALSA sound driver])
fi

AC_SUBST(ALSALIB_LIBS)

dnl Check for OSS

HAVE_OSS=yes

AC_DEFUN([AC_WITHOUT_OSS],[
	if test "x$withval" = "xno" ; then
		HAVE_OSS=no
	fi
])

AC_ARG_WITH(oss,[  --without-oss           Don't compile OSS driver],AC_WITHOUT_OSS)

dnl Check for libossaudio, needed for OSS on OpenBSD
AC_CHECK_LIB(ossaudio,_oss_ioctl)

mhw_found_one=no
AC_CHECK_HEADERS(soundcard.h sys/soundcard.h,mhw_found_one=yes)
if test "x$mhw_found_one" = "xno"; then
	HAVE_OSS=no
fi

if test "x$HAVE_OSS" = "xyes"; then
	AC_DEFINE(HAVE_OSS,[],[Enable OSS sound driver])
fi

dnl Check for JACK

MHW_HAVE_JACK=no
MHW_SKIP_JACKTEST=no

AC_DEFUN([AC_WITHOUT_JACK],[
	if test "x$withval" = "xno" ; then
	   MHW_SKIP_JACKTEST='yes'
	fi
])

AC_ARG_WITH(jack,[  --without-jack          Don't compile JACK driver],AC_WITHOUT_JACK)

if test "x$MHW_SKIP_JACKTEST" = "xno"
then
	PKG_CHECK_MODULES(JACK,jack >= 0.98.0,MHW_HAVE_JACK=yes,MHW_HAVE_JACK=no)
fi

if test "x$MHW_HAVE_JACK" = "xyes" ; then
	AC_DEFINE(HAVE_JACK,[],[Enable JACK sound driver])
fi

dnl Check for PulseAudio

MHW_HAVE_PULSE=no
MHW_SKIP_PULSETEST=no

AC_DEFUN([AC_WITHOUT_PULSE],[
	if test "x$withval" = "xno" ; then
	   MHW_SKIP_PULSETEST='yes'
	fi
])

AC_ARG_WITH(pulse,[  --without-pulse          Don't compile PulseAudio driver],AC_WITHOUT_PULSE)

if test "x$MHW_SKIP_PULSETEST" = "xno"
then
	PKG_CHECK_MODULES(PULSE,libpulse >= 0.9.10,MHW_HAVE_PULSE=yes,MHW_HAVE_PULSE=no)
fi

if test "x$MHW_HAVE_PULSE" = "xyes" ; then
	AC_DEFINE(HAVE_PULSEAUDIO,[],[Enable PulseAudio sound driver])
fi

dnl Check for Esound

MHW_HAVE_ESOUND=yes
AC_ARG_WITH(esound,[  --without-esound        Don't compile EsounD driver],
	if test "x$withval" = "xno"; then
	   MHW_HAVE_ESOUND=no
	fi
)
if test "x$MHW_HAVE_ESOUND" = "xyes"
then
	PKG_CHECK_MODULES(ESOUND,esound >= 0.2.0,MHW_HAVE_ESOUND=yes,MHW_HAVE_ESOUND=no)
fi

if test "x$MHW_HAVE_ESOUND" = "xyes"; then
	AC_DEFINE(HAVE_ESOUND,[],[Enable EsounD sound driver])
fi

dnl Check for Sun audio

MHW_HAVE_SUNAUDIO=yes

AC_DEFUN([AC_WITHOUT_SUNAUDIO],[
	if test "x$withval" = "xno" ; then
		MHW_HAVE_SUNAUDIO=no
	fi
])

AC_ARG_WITH(sun,[  --without-sun           Don't compile Sun audio driver],AC_WITHOUT_SUNAUDIO)

AC_CHECK_HEADER(sys/audio.h,mhw_found_one=yes,mhw_found_one=no)
if test "x$mhw_found_one" = "xno"; then
	MHW_HAVE_SUNAUDIO=no
fi

if test "x$MHW_HAVE_SUNAUDIO" = "xyes"; then
	AC_DEFINE(HAVE_SUN,[],[Enable Sun audio sound driver])
fi

dnl Check for aRts C interface

MHW_HAVE_ARTSC=yes
ARTSC_LIBS=""
ARTSC_CFLAGS=""

AC_DEFUN([AC_WITHOUT_ARTSC],[
	if test "x$withval" = "xno"; then
	        MHW_HAVE_ARTSC=no
	fi
])

AC_ARG_WITH(arts, [  --without-arts          Don't compile aRts driver],AC_WITHOUT_ARTSC)

ARTSC_CONFIG=no
if test "x$MHW_HAVE_ARTSC" = "xyes"; then
        AC_PATH_PROG(ARTSC_CONFIG, artsc-config, no)
fi

if test "x$ARTSC_CONFIG" = "xno"; then
    MHW_HAVE_ARTSC=no
else
	ARTSC_CFLAGS=`$ARTSC_CONFIG --cflags`
	ARTSC_LIBS=`$ARTSC_CONFIG --libs`
	AC_DEFINE(HAVE_ARTSC,[],[Enable aRts driver])
fi

AC_SUBST(ARTSC_CFLAGS)
AC_SUBST(ARTSC_LIBS)

dnl Check for GTK+

AC_DEFUN([AC_DISABLE_GTK2],[
	if test "x$enableval" = "xno" ; then
	DISABLE_GTK2='yes'
	fi
])

AC_ARG_ENABLE(gtk2, [  --disable-gtk2          Don't use GTK+ 2, use 1.2 instead],
	      AC_DISABLE_GTK2, DISABLE_GTK2='no')


dnl Check for GTK+ without gthread

FOUND_GTK="no"
USES_GTK2="no"

if test "x$FOUND_GTK" = "xno"; then
	if test "x$DISABLE_GTK2" != "xyes"; then
	AM_PATH_GTK_2_0(2.0.0,USES_GTK2="yes" FOUND_GTK="yes")
	fi
fi

if test "x$FOUND_GTK" = "xno"; then
AM_PATH_GTK(1.2.5,FOUND_GTK="yes",AC_MSG_ERROR(mhWaveEdit requires GTK+ version 1.2.5 or higher...))
fi

dnl Check for gthread if we're using GTK+ 2
dnl Not needed by the app itself, but needed for some aRts versions.
GTHREAD_CFLAGS=""
GTHREAD_LIBS=""
HAVE_GTHREAD="no"

if test "x$USES_GTK2" = "xyes"; then
   HAVE_GTHREAD="yes"
   PKG_CHECK_MODULES(GTHREAD, gthread-2.0, , HAVE_GTHREAD="no")
fi
if test "x$HAVE_GTHREAD" = "xyes"; then
   AC_DEFINE(HAVE_GTHREAD,[],[Defined if Glib thread support is available])
fi

AC_SUBST(GTHREAD_CFLAGS)
AC_SUBST(GTHREAD_LIBS)


dnl Check for large file support
AC_SYS_LARGEFILE
AC_DEFINE(_LARGEFILE_SOURCE,[],[Defined to get fseeko/ftello prototypes])
AC_CHECK_SIZEOF(off_t)

dnl Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS([sys/time.h time.h sys/ioctl.h sys/types.h unistd.h fcntl.h sched.h libintl.h locale.h])

dnl Ladspa
HAVE_LADSPA=yes
HAVE_LADSPA_GLOBAL=yes
AC_CHECK_HEADER(ladspa.h,,HAVE_LADSPA_GLOBAL=no)
AC_ARG_ENABLE(ladspa,
  [  --disable-ladspa        Don't include any Ladspa support],
  [if test "x$enableval" = "xno"; then HAVE_LADSPA=no; fi])
if test "x$HAVE_LADSPA" = "xyes"; then
	AC_CHECK_HEADER(dlfcn.h,,HAVE_LADSPA=no)
fi
if test "x$HAVE_LADSPA" = "xyes"; then
	AC_CHECK_LIB(dl,dlopen,LIBS="-ldl $LIBS",HAVE_LADSPA=no)
fi
if test "x$HAVE_LADSPA" = "xyes"; then
	AC_DEFINE(HAVE_LADSPA,[],[Enable LADSPA support])
fi
if test "x$HAVE_LADSPA_GLOBAL" = "xyes"; then
        AC_DEFINE(HAVE_SYS_LADSPA_H,[],[Use system LADSPA header])
fi

dnl Checks for typedefs, structures, and compiler characteristics.
AC_TYPE_SIZE_T
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIGNAL
AC_HEADER_TIME
AC_HEADER_DIRENT
AC_HEADER_SYS_WAIT
AC_C_CONST
AC_C_VOLATILE

dnl Check return type of unsetenv
AC_MSG_CHECKING([whether unsetenv returns a value])
HAVE_INT_UNSETENV=no
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
#include <stdlib.h>
],[int i; i = unsetenv("dummy"); return 0;])],HAVE_INT_UNSETENV=yes)
if test "x$HAVE_INT_UNSETENV" = "xyes";
then
    AC_DEFINE(UNSETENV_RETVAL,[],[Defined if unsetenv returns an integer])    
fi
AC_MSG_RESULT([$HAVE_INT_UNSETENV])

dnl Checks for library functions.
AC_FUNC_MEMCMP
AC_CHECK_FUNCS([gettimeofday mkdir strerror strtod strtol sched_yield ceill setlocale fseeko ftello lrint lrintf dup2 memchr memmove memset pow putenv select sqrt strchr strrchr strstr strtoul]) 
AC_FUNC_CLOSEDIR_VOID
AC_FUNC_FORK
AC_FUNC_SELECT_ARGTYPES
AC_FUNC_STAT
AC_FUNC_STRTOD

dnl Write output
AC_CONFIG_FILES([Makefile src/Makefile po/Makefile.in m4/Makefile share/Makefile ])
AC_OUTPUT

dnl Display configuration

echo
echo
echo "------------------------"
echo "mhWaveEdit configuration"
echo "------------------------"
echo
echo "Version: $MHW_VERSION"
echo 
echo "Libraries: "
echo -n "  GTK+ version:           "
if test "x$USES_GTK2" = "xyes"; then
	echo "2.x"
else
	echo "1.2"
fi
echo    "  Libsndfile:             $HAVE_SNDFILE"
echo    "  Libsamplerate:          $HAVE_LIBSAMPLERATE"
echo
echo    "Sound drivers:"
INCLUDED_DRIVERS=""
EXCLUDED_DRIVERS=""
AC_DEFUN([CHECKDRV], [ if test "x$1" = "xyes"; then INCLUDED_DRIVERS="$INCLUDED_DRIVERS $2"; else EXCLUDED_DRIVERS="$EXCLUDED_DRIVERS $2"; fi; ])
CHECKDRV([$HAVE_OSS],[OSS])
CHECKDRV([$HAVE_ALSALIB],[ALSA])
CHECKDRV([$MHW_HAVE_JACK],[JACK])
CHECKDRV([$MHW_HAVE_SUNAUDIO],[Sun])
CHECKDRV([$MHW_HAVE_PORTAUDIO],[PortAudio])
CHECKDRV([$MHW_HAVE_SDL],[SDL])
CHECKDRV([$MHW_HAVE_ESOUND],[EsounD])
CHECKDRV([$MHW_HAVE_ARTSC],[aRts])
CHECKDRV([$MHW_HAVE_PULSE],[PulseAudio])
echo    "  Included drivers:      $INCLUDED_DRIVERS"
echo    "  Drivers not included:  $EXCLUDED_DRIVERS"
echo -n "  Default sound driver:   $DEFAULT_DRIVER "
if test "x$DEFAULT_DRIVER" = "xauto"; then
echo -n "(detect at startup)"
fi
echo
echo
echo    "Other settings:"


echo    "  LADSPA Support:         $HAVE_LADSPA"
if test "x$HAVE_LADSPA" = "xyes"; then
echo -n "    ladspa.h header file: "
if test "x$HAVE_LADSPA_GLOBAL" = "xyes"; then
echo "system"
else
echo "local"
fi
echo    "    Default plugin path:  $DEFAULT_LADSPA_PATH"
fi

echo -n "  Floating-point samples: "
if test "x$MHW_DOUBLE" = "xyes"; then
	echo "double precision"
else
	echo "normal precision"
fi

echo    "  Default mixer app:      $DEFAULT_MIXERAPP"
echo
echo "Build settings:"
echo -n "  Compiler options:       "
echo    $CFLAGS
echo    "  Build date string:      ${FIXED_DATE_STR}"
echo    "  Build time string:      ${FIXED_TIME_STR}"
echo
if test "x$USES_GTK2$MHW_HAVE_ARTSC" = "xnoyes"; then
        echo "---------------------------------------------------------------"
        echo "WARNING: There are known issues when building with GTK+ 1.2 "
	echo "and newer versions of aRts. If you are experiencing problems,"
	echo "try running configure with the --without-arts option to disable "
	echo "aRts support"
	echo "---------------------------------------------------------------"
        echo
fi
echo    "Type make (or gmake) to compile mhWaveEdit!"