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New macro for testing for ALSA libraries.
Original commit message from CVS: New macro for testing for ALSA libraries. Understands the ACTION_IF_FOUND and ACTION_IF_NOT_FOUND arguments.
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1 changed files with 45 additions and 17 deletions
62
acinclude.m4
62
acinclude.m4
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@ -1,20 +1,40 @@
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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: 07/12/2000
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dnl AM_PATH_ALSA(MINIMUM-VERSION)
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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= --with-alsa-enc-prefix= --disable-alsatest
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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 (this has no effect, as yet)
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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
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dnl Get the clfags and libraries for 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="$LIBS"
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alsa_found=yes
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dnl
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AC_ARG_WITH(alsa-prefix,[ --with-alsa-prefix=PFX Prefix where Alsa library is installed(optional)],
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[alsa_prefix="$withval"], [alsa_prefix=""])
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AC_ARG_WITH(alsa-inc-prefix, [ --with-alsa-inc-prefix=PFX Prefix where include libraries are (optional)],
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[alsa_inc_prefix="$withval"], [alsa_inc_prefix=""])
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AC_ARG_ENABLE(alsatest, [ --disable-alsatest Do not try to compile and run a test Alsa program], [enable_alsatest=no], [enable_alsatest=yes])
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dnl Get the cflags and libraries for alsa
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dnl
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AC_ARG_WITH(alsa-prefix,
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[ --with-alsa-prefix=PFX Prefix where Alsa library is installed(optional)],
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[alsa_prefix="$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="$withval"], [alsa_inc_prefix=""])
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dnl FIXME: this is not yet implemented
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AC_ARG_ENABLE(alsatest,
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[ --disable-alsatest Do not try to compile and run a test Alsa program],
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[enable_alsatest=no],
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[enable_alsatest=yes])
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dnl Add any special include directories
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AC_MSG_CHECKING(for ALSA CFLAGS)
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@ -28,13 +48,12 @@ dnl add any special lib dirs
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AC_MSG_CHECKING(for ALSA LDFLAGS)
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if test "$alsa_prefix" != "" ; then
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ALSA_LIBS="$ALSA_LIBS -L$alsa_prefix"
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LDFLAGS="$LDFLAGS -L$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"
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alsa_save_LIBS="$LIBS"
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LIBS="$LIBS -lasound -lm -ldl"
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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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@ -90,18 +109,27 @@ 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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AC_MSG_WARN(Sufficiently new version of libasound not found.)
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LIBS="$alsa_save_LIBS"
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]
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ifelse([$3], , [AC_MSG_ERROR(Sufficiently new version of libasound not found.)])
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alsa_found=no]
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)
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AC_LANG_RESTORE
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dnl Now that we know that we have the right version, let's see if we have the library and not just the headers.
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AC_CHECK_LIB([asound], [snd_defaults_card],,
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[AC_MSG_WARN(No linkable libasound was found.)
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LIBS="$alsa_save_LIBS"]
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[ifelse([$3], , [AC_MSG_ERROR(No linkable libasound was found.)])
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alsa_found=no]
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)
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if test "x$alsa_found" = "xyes" ; then
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ifelse([$2], , :, [$2])
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fi
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if test "x$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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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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