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dnl MY_DEFINE(VARIABLE)
AC_DEFUN([MY_DEFINE],
[cat >> confdefs.h <<EOF
[#define] $1 1
EOF
])
dnl CONFIG_INTERFACE(package,macro_name,interface_id,help
dnl $1 $2 $3 $4
dnl action-if-yes-or-dynamic,
dnl $5
dnl action-if-yes,action-if-dynamic,action-if-no)
dnl $6 $7 $8
AC_DEFUN([CONFIG_INTERFACE],
[AC_ARG_ENABLE($1,[$4],
[case "x$enable_$1" in xyes|xdynamic) $5 ;; esac])
case "x$enable_$1" in
xyes)
MY_DEFINE(IA_$2)
AM_CONDITIONAL(ENABLE_$2, true)
$6
;;
xdynamic)
dynamic_targets="$dynamic_targets interface_$3.\$(so)"
$7
;;
*)
$8
;;
esac
AC_SUBST($3_so_libs)
])
dnl Configure Paths for Alsa
dnl Christopher Lansdown (lansdoct@cs.alfred.edu)
dnl 29/10/1998
dnl AM_PATH_ALSA(MINIMUM-VERSION)
dnl Test for libasound, and define ALSA_CFLAGS and ALSA_LIBS as appropriate.
dnl enables arguments --with-alsa-prefix= --with-alsa-enc-prefix= --disable-alsatest
dnl
AC_DEFUN(AM_PATH_ALSA,
[dnl
dnl Get the clfags and libraries for alsa
dnl
AC_ARG_WITH(alsa-prefix,[ --with-alsa-prefix=PFX Prefix where Alsa library is installed(optional)],
[alsa_prefix="$withval"], [alsa_prefix=""])
AC_ARG_WITH(alsa-inc-prefix, [ --with-alsa-inc-prefix=PFX Prefix where include libraries are (optional)],
[alsa_inc_prefix="$withval"], [alsa_inc_prefix=""])
AC_ARG_ENABLE(alsatest, [ --disable-alsatest Do not try to compile and run a test Alsa program], [enable_alsatest=no], [enable_alsatest=yes])
dnl Add any special include directories
AC_MSG_CHECKING(for ALSA CFLAGS)
if test "$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"
LIBS="$LIBS -L$alsa_prefix"
fi
dnl add the alsa library
ALSA_LIBS="$ALSA_LIBS -lasound"
LDFLAGS="$LDFLAGS $ALSA_LIBS"
AC_MSG_RESULT($ALSA_LIBS)
dnl Check for the presence of the library
dnl if test $enable_alsatest = yes; then
dnl AC_MSG_CHECKING(for working libasound)
dnl AC_TRY_RUN([
dnl #include <sys/asoundlib.h>
dnl void main(void)
dnl {
dnl snd_cards();
dnl exit(0);
dnl }
dnl ],
dnl [AC_MSG_RESULT("present")],
dnl [AC_MSG_RESULT("not found. ")
dnl AC_MSG_WARN(Fatal error: Install alsa-lib package or use --with-alsa-prefix option...)],
dnl [AC_MSG_RESULT(unsopported)
dnl AC_MSG_WARN(Cross-compiling isn't supported...)]
dnl )
dnl fi
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.)
AC_MSG_WARN(Sufficiently new version of libasound not found.)]
)
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_cards],,
[AC_MSG_WARN(No linkable libasound was found.)]
)
dnl That should be it. Now just export out symbols:
AC_SUBST(ALSA_CFLAGS)
AC_SUBST(ALSA_LIBS)
])
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