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145 lines
4.5 KiB
145 lines
4.5 KiB
############################################################################## |
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dnl Configure Paths for Alsa |
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dnl Some modifications by Richard Boulton <richard-alsa@tartarus.org> |
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dnl Christopher Lansdown <lansdoct@cs.alfred.edu> |
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dnl Jaroslav Kysela <perex@suse.cz> |
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dnl Last modification: alsa.m4,v 1.23 2004/01/16 18:14:22 tiwai Exp |
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dnl AM_PATH_ALSA([MINIMUM-VERSION [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]]) |
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dnl Test for libasound, and define ALSA_CFLAGS and ALSA_LIBS as appropriate. |
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dnl enables arguments --with-alsa-prefix= |
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dnl --with-alsa-enc-prefix= |
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dnl --disable-alsatest |
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dnl |
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dnl For backwards compatibility, if ACTION_IF_NOT_FOUND is not specified, |
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dnl and the alsa libraries are not found, a fatal AC_MSG_ERROR() will result. |
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dnl |
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AC_DEFUN([AM_PATH_ALSA], |
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[dnl Save the original CFLAGS, LDFLAGS, and LIBS |
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alsa_save_CFLAGS="$CFLAGS" |
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alsa_save_LDFLAGS="$LDFLAGS" |
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alsa_save_LIBS="$LIBS" |
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alsa_found=yes |
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dnl |
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dnl Get the cflags and libraries for alsa |
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dnl |
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AC_ARG_WITH(alsa-prefix, |
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[ --with-alsa-prefix=PFX Prefix where Alsa library is installed(optional)], |
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[alsa_prefix="$withval"], [alsa_prefix=""]) |
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AC_ARG_WITH(alsa-inc-prefix, |
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[ --with-alsa-inc-prefix=PFX Prefix where include libraries are (optional)], |
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[alsa_inc_prefix="$withval"], [alsa_inc_prefix=""]) |
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dnl FIXME: this is not yet implemented |
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AC_ARG_ENABLE(alsatest, |
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[ --disable-alsatest Do not try to compile and run a test Alsa program], |
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[enable_alsatest="$enableval"], |
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[enable_alsatest=yes]) |
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dnl Add any special include directories |
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AC_MSG_CHECKING(for ALSA CFLAGS) |
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if test "$alsa_inc_prefix" != "" ; then |
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ALSA_CFLAGS="$ALSA_CFLAGS -I$alsa_inc_prefix" |
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CFLAGS="$CFLAGS -I$alsa_inc_prefix" |
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fi |
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AC_MSG_RESULT($ALSA_CFLAGS) |
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dnl add any special lib dirs |
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AC_MSG_CHECKING(for ALSA LDFLAGS) |
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if test "$alsa_prefix" != "" ; then |
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ALSA_LIBS="$ALSA_LIBS -L$alsa_prefix" |
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LDFLAGS="$LDFLAGS $ALSA_LIBS" |
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fi |
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dnl add the alsa library |
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ALSA_LIBS="$ALSA_LIBS -lasound -lm -ldl -lpthread" |
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LIBS=`echo $LIBS | sed 's/-lm//'` |
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LIBS=`echo $LIBS | sed 's/-ldl//'` |
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LIBS=`echo $LIBS | sed 's/-lpthread//'` |
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LIBS=`echo $LIBS | sed 's/ //'` |
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LIBS="$ALSA_LIBS $LIBS" |
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AC_MSG_RESULT($ALSA_LIBS) |
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dnl Check for a working version of libasound that is of the right version. |
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min_alsa_version=ifelse([$1], ,0.1.1,$1) |
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AC_MSG_CHECKING(for libasound headers version >= $min_alsa_version) |
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no_alsa="" |
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alsa_min_major_version=`echo $min_alsa_version | \ |
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sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'` |
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alsa_min_minor_version=`echo $min_alsa_version | \ |
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sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'` |
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alsa_min_micro_version=`echo $min_alsa_version | \ |
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sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'` |
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AC_LANG_SAVE |
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AC_LANG_C |
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AC_TRY_COMPILE([ |
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#include <alsa/asoundlib.h> |
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], [ |
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/* ensure backward compatibility */ |
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#if !defined(SND_LIB_MAJOR) && defined(SOUNDLIB_VERSION_MAJOR) |
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#define SND_LIB_MAJOR SOUNDLIB_VERSION_MAJOR |
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#endif |
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#if !defined(SND_LIB_MINOR) && defined(SOUNDLIB_VERSION_MINOR) |
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#define SND_LIB_MINOR SOUNDLIB_VERSION_MINOR |
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#endif |
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#if !defined(SND_LIB_SUBMINOR) && defined(SOUNDLIB_VERSION_SUBMINOR) |
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#define SND_LIB_SUBMINOR SOUNDLIB_VERSION_SUBMINOR |
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#endif |
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# if(SND_LIB_MAJOR > $alsa_min_major_version) |
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exit(0); |
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# else |
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# if(SND_LIB_MAJOR < $alsa_min_major_version) |
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# error not present |
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# endif |
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# if(SND_LIB_MINOR > $alsa_min_minor_version) |
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exit(0); |
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# else |
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# if(SND_LIB_MINOR < $alsa_min_minor_version) |
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# error not present |
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# endif |
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# if(SND_LIB_SUBMINOR < $alsa_min_micro_version) |
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# error not present |
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# endif |
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# endif |
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# endif |
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exit(0); |
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], |
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[AC_MSG_RESULT(found.)], |
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[AC_MSG_RESULT(not present.) |
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ifelse([$3], , [AC_MSG_ERROR(Sufficiently new version of libasound not found.)]) |
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alsa_found=no] |
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) |
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AC_LANG_RESTORE |
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dnl Now that we know that we have the right version, let's see if we have the library and not just the headers. |
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if test "x$enable_alsatest" = "xyes"; then |
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AC_CHECK_LIB([asound], [snd_ctl_open],, |
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[ifelse([$3], , [AC_MSG_ERROR(No linkable libasound was found.)]) |
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alsa_found=no] |
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) |
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fi |
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if test "x$alsa_found" = "xyes" ; then |
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ifelse([$2], , :, [$2]) |
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LIBS=`echo $LIBS | sed 's/-lasound//g'` |
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LIBS=`echo $LIBS | sed 's/ //'` |
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LIBS="-lasound $LIBS" |
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fi |
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if test "x$alsa_found" = "xno" ; then |
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ifelse([$3], , :, [$3]) |
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CFLAGS="$alsa_save_CFLAGS" |
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LDFLAGS="$alsa_save_LDFLAGS" |
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LIBS="$alsa_save_LIBS" |
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ALSA_CFLAGS="" |
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ALSA_LIBS="" |
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fi |
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dnl That should be it. Now just export out symbols: |
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AC_SUBST(ALSA_CFLAGS) |
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AC_SUBST(ALSA_LIBS) |
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])
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