gstreamer/acinclude.m4

dnl Configure Paths for Alsa
dnl Some modifications by Richard Boulton <richard-alsa@tartarus.org>
dnl Christopher Lansdown <lansdoct@cs.alfred.edu>
dnl Jaroslav Kysela <perex@suse.cz>
dnl Last modification: 07/01/2001
dnl AM_PATH_ALSA([MINIMUM-VERSION [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl Test for libasound, and define ALSA_CFLAGS and ALSA_LIBS as appropriate.
dnl enables arguments --with-alsa-prefix=
dnl                   --with-alsa-enc-prefix=
dnl                   --disable-alsatest  (this has no effect, as yet)
dnl
dnl For backwards compatibility, if ACTION_IF_NOT_FOUND is not specified,
dnl and the alsa libraries are not found, a fatal AC_MSG_ERROR() will result.
dnl
AC_DEFUN(AM_PATH_ALSA,
[dnl Save the original CFLAGS, LDFLAGS, and LIBS
alsa_save_CFLAGS="$CFLAGS"
alsa_save_LDFLAGS="$LDFLAGS"
alsa_save_LIBS="$LIBS"
alsa_found=yes

dnl
dnl Get the cflags and libraries for alsa
dnl
AC_ARG_WITH(alsa-prefix,
[  --with-alsa-prefix=PFX  Prefix where Alsa library is installed(optional)],
[alsa_prefix="$withval"], [alsa_prefix=""])

AC_ARG_WITH(alsa-inc-prefix,
[  --with-alsa-inc-prefix=PFX  Prefix where include libraries are (optional)],
[alsa_inc_prefix="$withval"], [alsa_inc_prefix=""])

dnl FIXME: this is not yet implemented
AC_ARG_ENABLE(alsatest,
[  --disable-alsatest      Do not try to compile and run a test Alsa program],
[enable_alsatest=no],
[enable_alsatest=yes])

dnl Add any special include directories
AC_MSG_CHECKING(for ALSA CFLAGS)
if test "$alsa_inc_prefix" != "" ; then
	ALSA_CFLAGS="$ALSA_CFLAGS -I$alsa_inc_prefix"
	CFLAGS="$CFLAGS -I$alsa_inc_prefix"
fi
AC_MSG_RESULT($ALSA_CFLAGS)

dnl add any special lib dirs
AC_MSG_CHECKING(for ALSA LDFLAGS)
if test "$alsa_prefix" != "" ; then
	ALSA_LIBS="$ALSA_LIBS -L$alsa_prefix"
	LDFLAGS="$LDFLAGS $ALSA_LIBS"
fi

dnl add the alsa library
ALSA_LIBS="$ALSA_LIBS -lasound -lm -ldl"
LIBS=`echo $LIBS | sed 's/-lm//'`
LIBS=`echo $LIBS | sed 's/-ldl//'`
LIBS=`echo $LIBS | sed 's/  //'`
LIBS="$ALSA_LIBS $LIBS"
AC_MSG_RESULT($ALSA_LIBS)

dnl Check for a working version of libasound that is of the right version.
min_alsa_version=ifelse([$1], ,0.1.1,$1)
AC_MSG_CHECKING(for libasound headers version >= $min_alsa_version)
no_alsa=""
    alsa_min_major_version=`echo $min_alsa_version | \
           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
    alsa_min_minor_version=`echo $min_alsa_version | \
           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
    alsa_min_micro_version=`echo $min_alsa_version | \
           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`

AC_LANG_SAVE
AC_LANG_C
AC_TRY_COMPILE([
#include <sys/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
#if !defined(SND_LIB_MINOR) && defined(SOUNDLIB_VERSION_MINOR)
#define SND_LIB_MINOR SOUNDLIB_VERSION_MINOR
#endif
#if !defined(SND_LIB_SUBMINOR) && defined(SOUNDLIB_VERSION_SUBMINOR)
#define SND_LIB_SUBMINOR SOUNDLIB_VERSION_SUBMINOR
#endif

#  if(SND_LIB_MAJOR > $alsa_min_major_version)
  exit(0);
#  else
#    if(SND_LIB_MAJOR < $alsa_min_major_version)
#       error not present
#    endif

#   if(SND_LIB_MINOR > $alsa_min_minor_version)
  exit(0);
#   else
#     if(SND_LIB_MINOR < $alsa_min_minor_version)
#          error not present
#      endif

#      if(SND_LIB_SUBMINOR < $alsa_min_micro_version)
#        error not present
#      endif
#    endif
#  endif
exit(0);
}
],
  [AC_MSG_RESULT(found.)],
  [AC_MSG_RESULT(not present.)
   ifelse([$3], , [AC_MSG_ERROR(Sufficiently new version of libasound not found.)])
   alsa_found=no]
)
AC_LANG_RESTORE

dnl Now that we know that we have the right version, let's see if we have the library and not just the headers.
AC_CHECK_LIB([asound], [snd_defaults_card],,
	[ifelse([$3], , [AC_MSG_ERROR(No linkable libasound was found.)])
	 alsa_found=no]
)

if test "x$alsa_found" = "xyes" ; then
   ifelse([$2], , :, [$2])
   LIBS=`echo $LIBS | sed 's/-lasound//g'`
   LIBS=`echo $LIBS | sed 's/  //'`
   LIBS="-lasound $LIBS"
fi
if test "x$alsa_found" = "xno" ; then
   ifelse([$3], , :, [$3])
   CFLAGS="$alsa_save_CFLAGS"
   LDFLAGS="$alsa_save_LDFLAGS"
   LIBS="$alsa_save_LIBS"
   ALSA_CFLAGS=""
   ALSA_LIBS=""
fi

dnl That should be it.  Now just export out symbols:
AC_SUBST(ALSA_CFLAGS)
AC_SUBST(ALSA_LIBS)
])

# CFLAGS and library paths for XMMS
# written 15 December 1999 by Ben Gertzfield <che@debian.org>

dnl Usage:
dnl AM_PATH_XMMS([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl
dnl Example:
dnl AM_PATH_XMMS(0.9.5.1, , AC_MSG_ERROR([*** XMMS >= 0.9.5.1 not installed - please install first ***]))
dnl
dnl Defines XMMS_CFLAGS, XMMS_LIBS, XMMS_DATA_DIR, XMMS_PLUGIN_DIR, 
dnl XMMS_VISUALIZATION_PLUGIN_DIR, XMMS_INPUT_PLUGIN_DIR, 
dnl XMMS_OUTPUT_PLUGIN_DIR, XMMS_GENERAL_PLUGIN_DIR, XMMS_EFFECT_PLUGIN_DIR,
dnl and XMMS_VERSION for your plugin pleasure.
dnl

dnl XMMS_TEST_VERSION(AVAILABLE-VERSION, NEEDED-VERSION [, ACTION-IF-OKAY [, ACTION-IF-NOT-OKAY]])
AC_DEFUN(XMMS_TEST_VERSION, [

# Determine which version number is greater. Prints 2 to stdout if	
# the second number is greater, 1 if the first number is greater,	
# 0 if the numbers are equal.						
									
# Written 15 December 1999 by Ben Gertzfield <che@debian.org>		
# Revised 15 December 1999 by Jim Monty <monty@primenet.com>		
									
    AC_PROG_AWK
    xmms_got_version=[` $AWK '						\
BEGIN {									\
    print vercmp(ARGV[1], ARGV[2]);					\
}									\
									\
function vercmp(ver1, ver2,    ver1arr, ver2arr,			\
                               ver1len, ver2len,			\
                               ver1int, ver2int, len, i, p) {		\
									\
    ver1len = split(ver1, ver1arr, /\./);				\
    ver2len = split(ver2, ver2arr, /\./);				\
									\
    len = ver1len > ver2len ? ver1len : ver2len;			\
									\
    for (i = 1; i <= len; i++) {					\
        p = 1000 ^ (len - i);						\
        ver1int += ver1arr[i] * p;					\
        ver2int += ver2arr[i] * p;					\
    }									\
									\
    if (ver1int < ver2int)						\
        return 2;							\
    else if (ver1int > ver2int)						\
        return 1;							\
    else								\
        return 0;							\
}' $1 $2`]								

    if test $xmms_got_version -eq 2; then 	# failure
	ifelse([$4], , :, $4)			
    else  					# success!
	ifelse([$3], , :, $3)
    fi
])

AC_DEFUN(AM_PATH_XMMS,
[
AC_ARG_WITH(xmms-prefix,[  --with-xmms-prefix=PFX  Prefix where XMMS is installed (optional)],
	xmms_config_prefix="$withval", xmms_config_prefix="")
AC_ARG_WITH(xmms-exec-prefix,[  --with-xmms-exec-prefix=PFX Exec prefix where XMMS is installed (optional)],
	xmms_config_exec_prefix="$withval", xmms_config_exec_prefix="")

if test x$xmms_config_exec_prefix != x; then
    xmms_config_args="$xmms_config_args --exec-prefix=$xmms_config_exec_prefix"
    if test x${XMMS_CONFIG+set} != xset; then
	XMMS_CONFIG=$xmms_config_exec_prefix/bin/xmms-config
    fi
fi

if test x$xmms_config_prefix != x; then
    xmms_config_args="$xmms_config_args --prefix=$xmms_config_prefix"
    if test x${XMMS_CONFIG+set} != xset; then
  	XMMS_CONFIG=$xmms_config_prefix/bin/xmms-config
    fi
fi

AC_PATH_PROG(XMMS_CONFIG, xmms-config, no)
min_xmms_version=ifelse([$1], ,0.9.5.1, $1)

if test "$XMMS_CONFIG" = "no"; then
    no_xmms=yes
else
    XMMS_CFLAGS=`$XMMS_CONFIG $xmms_config_args --cflags`
    XMMS_LIBS=`$XMMS_CONFIG $xmms_config_args --libs`
    XMMS_VERSION=`$XMMS_CONFIG $xmms_config_args --version`
    XMMS_DATA_DIR=`$XMMS_CONFIG $xmms_config_args --data-dir`
    XMMS_PLUGIN_DIR=`$XMMS_CONFIG $xmms_config_args --plugin-dir`
    XMMS_VISUALIZATION_PLUGIN_DIR=`$XMMS_CONFIG $xmms_config_args \
					--visualization-plugin-dir`
    XMMS_INPUT_PLUGIN_DIR=`$XMMS_CONFIG $xmms_config_args --input-plugin-dir`
    XMMS_OUTPUT_PLUGIN_DIR=`$XMMS_CONFIG $xmms_config_args --output-plugin-dir`
    XMMS_EFFECT_PLUGIN_DIR=`$XMMS_CONFIG $xmms_config_args --effect-plugin-dir`
    XMMS_GENERAL_PLUGIN_DIR=`$XMMS_CONFIG $xmms_config_args --general-plugin-dir`

    XMMS_TEST_VERSION($XMMS_VERSION, $min_xmms_version, ,no_xmms=version)
fi

AC_MSG_CHECKING(for XMMS - version >= $min_xmms_version)

if test "x$no_xmms" = x; then
    AC_MSG_RESULT(yes)
    ifelse([$2], , :, [$2])
else
    AC_MSG_RESULT(no)

    if test "$XMMS_CONFIG" = "no" ; then
	echo "*** The xmms-config script installed by XMMS could not be found."
      	echo "*** If XMMS was installed in PREFIX, make sure PREFIX/bin is in"
	echo "*** your path, or set the XMMS_CONFIG environment variable to the"
	echo "*** full path to xmms-config."
    else
	if test "$no_xmms" = "version"; then
	    echo "*** An old version of XMMS, $XMMS_VERSION, was found."
	    echo "*** You need a version of XMMS newer than $min_xmms_version."
	    echo "*** The latest version of XMMS is always available from"
	    echo "*** http://www.xmms.org/"
	    echo "***"

            echo "*** If you have already installed a sufficiently new version, this error"
            echo "*** probably means that the wrong copy of the xmms-config shell script is"
            echo "*** being found. The easiest way to fix this is to remove the old version"
            echo "*** of XMMS, but you can also set the XMMS_CONFIG environment to point to the"
            echo "*** correct copy of xmms-config. (In this case, you will have to"
            echo "*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf"
            echo "*** so that the correct libraries are found at run-time)"
	fi
    fi
    XMMS_CFLAGS=""
    XMMS_LIBS=""
    ifelse([$3], , :, [$3])
fi
AC_SUBST(XMMS_CFLAGS)
AC_SUBST(XMMS_LIBS)
AC_SUBST(XMMS_VERSION)
AC_SUBST(XMMS_DATA_DIR)
AC_SUBST(XMMS_PLUGIN_DIR)
AC_SUBST(XMMS_VISUALIZATION_PLUGIN_DIR)
AC_SUBST(XMMS_INPUT_PLUGIN_DIR)
AC_SUBST(XMMS_OUTPUT_PLUGIN_DIR)
AC_SUBST(XMMS_GENERAL_PLUGIN_DIR)
AC_SUBST(XMMS_EFFECT_PLUGIN_DIR)
])


dnl Perform a check for a feature for GStreamer
dnl Richard Boulton <richard-alsa@tartarus.org>
dnl Last modification: 25/06/2001
dnl GST_CHECK_FEATURE(FEATURE-NAME, FEATURE-DESCRIPTION,
dnl                   DEPENDENT-PLUGINS, TEST-FOR-FEATURE,
dnl                   DISABLE-BY-DEFAULT, ACTION-IF-USE, ACTION-IF-NOTUSE)
dnl
dnl This macro adds a command line argument to enable the user to enable
dnl or disable a feature, and if the feature is enabled, performs a supplied
dnl test to check if the feature is available.
dnl
dnl The test should define HAVE_<FEATURE-NAME> to "yes" or "no" depending
dnl on whether the feature is available.
dnl
dnl The macro will set USE_<<FEATURE-NAME> to "yes" or "no" depending on
dnl whether the feature is to be used.
dnl
dnl The macro will call AM_CONDITIONAL(USE_<<FEATURE-NAME>, ...) to allow
dnl the feature to control what is built in Makefile.ams.  If you want
dnl additional actions resulting from the test, you can add them with the
dnl ACTION-IF-USE and ACTION-IF-NOTUSE parameters.
dnl 
dnl FEATURE-NAME        is the name of the feature, and should be in
dnl                     purely upper case characters.
dnl FEATURE-DESCRIPTION is used to describe the feature in help text for
dnl                     the command line argument.
dnl DEPENDENT-PLUGINS   lists any plugins which depend on this feature.
dnl TEST-FOR-FEATURE    is a test which sets HAVE_<FEATURE-NAME> to "yes"
dnl                     or "no" depending on whether the feature is
dnl                     available.
dnl DISABLE-BY-DEFAULT  if "disabled", the feature is disabled by default,
dnl                     if any other value, the feature is enabled by default.
dnl ACTION-IF-USE       any extra actions to perform if the feature is to be
dnl                     used.
dnl ACTION-IF-NOTUSE    any extra actions to perform if the feature is not to
dnl                     be used.
dnl
AC_DEFUN(GST_CHECK_FEATURE,
[dnl
builtin(define, [gst_endisable], ifelse($5, [disabled], [enable], [disable]))dnl
AC_ARG_ENABLE(translit([$1], A-Z, a-z),
  [  ]builtin(format, --%-26s gst_endisable %s, gst_endisable-translit([$1], A-Z, a-z), [$2]ifelse([$3],,,: [$3])),
  [ case "${enableval}" in
      yes) USE_[$1]=yes ;;
      no) USE_[$1]=no ;;
      *) AC_MSG_ERROR(bad value ${enableval} for --enable-translit([$1], A-Z, a-z)) ;;
    esac],
  [ USE_$1=]ifelse($5, [disabled], [no], [yes]))           dnl DEFAULT

dnl *** If it's enabled
if test x$USE_[$1] = xyes; then
  gst_check_save_LIBS=$LIBS
  gst_check_save_LDFLAGS=$LDFLAGS
  gst_check_save_CFLAGS=$CFLAGS
  gst_check_save_CPPFLAGS=$CPPFLAGS
  gst_check_save_CXXFLAGS=$CXXFLAGS
  HAVE_[$1]=no
  $4
  LIBS=$gst_check_save_LIBS
  LDFLAGS=$gst_check_save_LDFLAGS
  CFLAGS=$gst_check_save_CFLAGS
  CPPFLAGS=$gst_check_save_CPPFLAGS
  CXXFLAGS=$gst_check_save_CXXFLAGS

  dnl If it isn't found, unset USE_[$1]
  if test x$HAVE_[$1] = xno; then
    USE_[$1]=no
  fi
fi
dnl *** Warn if it's disabled or not found
if test x$USE_[$1] = xyes; then
  ifelse([$6], , :, [$6])
else
  ifelse([$3], , :, [AC_MSG_WARN(
***** NOTE: These plugins won't be built: [$3]
)])
  ifelse([$7], , :, [$7])
fi
dnl *** Define the conditional as appropriate
AM_CONDITIONAL(USE_[$1], test x$USE_[$1] = xyes)
])

dnl Use a -config program which accepts --cflags and --libs parameters
dnl to set *_CFLAGS and *_LIBS and check existence of a feature.
dnl Richard Boulton <richard-alsa@tartarus.org>
dnl Last modification: 26/06/2001
dnl GST_CHECK_CONFIGPROG(FEATURE-NAME, CONFIG-PROG-FILENAME, MODULES)
dnl
dnl This check was written for GStreamer: it should be renamed and checked
dnl for portability if you decide to use it elsewhere.
dnl
AC_DEFUN(GST_CHECK_CONFIGPROG,
[
  AC_PATH_PROG([$1]_CONFIG, [$2], no)
  if test x$[$1]_CONFIG = xno; then
    [$1]_LIBS=
    [$1]_CFLAGS=
    HAVE_[$1]=no
  else
    [$1]_LIBS=`[$2] --libs [$3]`
    [$1]_CFLAGS=`[$2] --cflags [$3]`
    HAVE_[$1]=yes
  fi
  AC_SUBST([$1]_LIBS)
  AC_SUBST([$1]_CFLAGS)
])


dnl Perform a check for existence of ARTSC
dnl Richard Boulton <richard-alsa@tartarus.org>
dnl Last modification: 26/06/2001
dnl GST_CHECK_FEATURE(FEATURE-NAME, FEATURE-DESCRIPTION,
dnl                   DEPENDENT-PLUGINS, TEST-FOR-FEATURE)
dnl
dnl This check was written for GStreamer: it should be renamed and checked
dnl for portability if you decide to use it elsewhere.
dnl
AC_DEFUN(GST_CHECK_ARTSC,
[
  AC_PATH_PROG(ARTSC_CONFIG, artsc-config, no)
  if test x$ARTSC_CONFIG = xno; then
    AC_MSG_WARN([Couldn't find artsc-config])
    HAVE_ARTSC=no
    ARTSC_LIBS=
    ARTSC_CFLAGS=
  else
    ARTSC_LIBS=`artsc-config --libs`
    ARTSC_CFLAGS=`artsc-config --cflags`
    dnl AC_CHECK_HEADER uses CPPFLAGS, but not CFLAGS.
    dnl FIXME: Ensure only suitable flags result from artsc-config --cflags
    CPPFLAGS="$CPPFLAGS $ARTSC_CFLAGS"
    AC_CHECK_HEADER(artsc.h, HAVE_ARTSC=yes, HAVE_ARTSC=no)
  fi
  AC_SUBST(ARTSC_LIBS)
  AC_SUBST(ARTSC_CFLAGS)
])