jpayne@68: dnl Configure Paths for Alsa
jpayne@68: dnl Some modifications by Richard Boulton <richard-alsa@tartarus.org>
jpayne@68: dnl Christopher Lansdown <lansdoct@cs.alfred.edu>
jpayne@68: dnl Jaroslav Kysela <perex@perex.cz>
jpayne@68: dnl Last modification: $Id: alsa.m4,v 1.24 2004/09/15 18:48:07 tiwai Exp $
jpayne@68: dnl
jpayne@68: dnl AM_PATH_ALSA([MINIMUM-VERSION [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
jpayne@68: dnl Test for libasound, and define ALSA_CFLAGS, ALSA_LIBS and
jpayne@68: dnl ALSA_TOPOLOGY_LIBS as appropriate.
jpayne@68: dnl
jpayne@68: dnl enables arguments --with-alsa-prefix=
jpayne@68: dnl                   --with-alsa-inc-prefix=
jpayne@68: dnl                   --disable-alsatest
jpayne@68: dnl
jpayne@68: dnl For backwards compatibility, if ACTION_IF_NOT_FOUND is not specified,
jpayne@68: dnl and the alsa libraries are not found, a fatal AC_MSG_ERROR() will result.
jpayne@68: dnl
jpayne@68: 
jpayne@68: AC_DEFUN([AM_PATH_ALSA],
jpayne@68: [dnl Save the original CFLAGS, LDFLAGS, and LIBS
jpayne@68: alsa_save_CFLAGS="$CFLAGS"
jpayne@68: alsa_save_LDFLAGS="$LDFLAGS"
jpayne@68: alsa_save_LIBS="$LIBS"
jpayne@68: alsa_found=yes
jpayne@68: alsa_topology_found=no
jpayne@68: 
jpayne@68: dnl
jpayne@68: dnl Get the cflags and libraries for alsa
jpayne@68: dnl
jpayne@68: AC_ARG_WITH(alsa-prefix,
jpayne@68:   AS_HELP_STRING([--with-alsa-prefix=PFX], [Prefix where Alsa library is installed(optional)]),
jpayne@68:   [alsa_prefix="$withval"], [alsa_prefix=""])
jpayne@68: 
jpayne@68: AC_ARG_WITH(alsa-inc-prefix,
jpayne@68:   AS_HELP_STRING([--with-alsa-inc-prefix=PFX], [Prefix where include libraries are (optional)]),
jpayne@68:   [alsa_inc_prefix="$withval"], [alsa_inc_prefix=""])
jpayne@68: 
jpayne@68: AC_ARG_ENABLE(alsa-topology,
jpayne@68:   AS_HELP_STRING([--enable-alsatopology], [Force to use the Alsa topology library]),
jpayne@68:   [enable_atopology="$enableval"],
jpayne@68:   [enable_atopology=no])
jpayne@68: 
jpayne@68: AC_ARG_ENABLE(alsatest,
jpayne@68:   AS_HELP_STRING([--disable-alsatest], [Do not try to compile and run a test Alsa program]),
jpayne@68:   [enable_alsatest="$enableval"],
jpayne@68:   [enable_alsatest=yes])
jpayne@68: 
jpayne@68: dnl Add any special include directories
jpayne@68: AC_MSG_CHECKING(for ALSA CFLAGS)
jpayne@68: if test "$alsa_inc_prefix" != "" ; then
jpayne@68: 	ALSA_CFLAGS="$ALSA_CFLAGS -I$alsa_inc_prefix"
jpayne@68: 	CFLAGS="$CFLAGS -I$alsa_inc_prefix"
jpayne@68: fi
jpayne@68: AC_MSG_RESULT($ALSA_CFLAGS)
jpayne@68: 
jpayne@68: AC_CHECK_LIB(c, dlopen, LIBDL="", [AC_CHECK_LIB(dl, dlopen, LIBDL="-ldl")])
jpayne@68: 
jpayne@68: dnl add any special lib dirs
jpayne@68: AC_MSG_CHECKING(for ALSA LDFLAGS)
jpayne@68: if test "$alsa_prefix" != "" ; then
jpayne@68: 	ALSA_LIBS="$ALSA_LIBS -L$alsa_prefix"
jpayne@68: 	LDFLAGS="$LDFLAGS $ALSA_LIBS"
jpayne@68: fi
jpayne@68: 
jpayne@68: dnl add the alsa library
jpayne@68: ALSA_LIBS="$ALSA_LIBS -lasound -lm $LIBDL -lpthread"
jpayne@68: LIBS="$ALSA_LIBS $LIBS"
jpayne@68: AC_MSG_RESULT($ALSA_LIBS)
jpayne@68: 
jpayne@68: dnl Check for a working version of libasound that is of the right version.
jpayne@68: if test "x$enable_alsatest" = "xyes"; then
jpayne@68: 
jpayne@68: AC_MSG_CHECKING([required libasound headers version])
jpayne@68: min_alsa_version=ifelse([$1], , 0.1.1, $1)
jpayne@68: no_alsa=""
jpayne@68:     alsa_min_major_version=`echo $min_alsa_version | \
jpayne@68:            sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
jpayne@68:     alsa_min_minor_version=`echo $min_alsa_version | \
jpayne@68:            sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
jpayne@68:     alsa_min_micro_version=`echo $min_alsa_version | \
jpayne@68:            sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
jpayne@68: AC_MSG_RESULT($alsa_min_major_version.$alsa_min_minor_version.$alsa_min_micro_version)
jpayne@68: 
jpayne@68: AC_LANG_SAVE
jpayne@68: AC_LANG_C
jpayne@68: AC_MSG_CHECKING([for libasound headers version >= $alsa_min_major_version.$alsa_min_minor_version.$alsa_min_micro_version ($min_alsa_version)])
jpayne@68: AC_TRY_COMPILE([
jpayne@68: #include <alsa/asoundlib.h>
jpayne@68: ], [
jpayne@68: /* ensure backward compatibility */
jpayne@68: #if !defined(SND_LIB_MAJOR) && defined(SOUNDLIB_VERSION_MAJOR)
jpayne@68: #define SND_LIB_MAJOR SOUNDLIB_VERSION_MAJOR
jpayne@68: #endif
jpayne@68: #if !defined(SND_LIB_MINOR) && defined(SOUNDLIB_VERSION_MINOR)
jpayne@68: #define SND_LIB_MINOR SOUNDLIB_VERSION_MINOR
jpayne@68: #endif
jpayne@68: #if !defined(SND_LIB_SUBMINOR) && defined(SOUNDLIB_VERSION_SUBMINOR)
jpayne@68: #define SND_LIB_SUBMINOR SOUNDLIB_VERSION_SUBMINOR
jpayne@68: #endif
jpayne@68: 
jpayne@68: #  if(SND_LIB_MAJOR > $alsa_min_major_version)
jpayne@68:   exit(0);
jpayne@68: #  else
jpayne@68: #    if(SND_LIB_MAJOR < $alsa_min_major_version)
jpayne@68: #       error not present
jpayne@68: #    endif
jpayne@68: 
jpayne@68: #   if(SND_LIB_MINOR > $alsa_min_minor_version)
jpayne@68:   exit(0);
jpayne@68: #   else
jpayne@68: #     if(SND_LIB_MINOR < $alsa_min_minor_version)
jpayne@68: #          error not present
jpayne@68: #      endif
jpayne@68: 
jpayne@68: #      if(SND_LIB_SUBMINOR < $alsa_min_micro_version)
jpayne@68: #        error not present
jpayne@68: #      endif
jpayne@68: #    endif
jpayne@68: #  endif
jpayne@68: exit(0);
jpayne@68: ],
jpayne@68:   [AC_MSG_RESULT(found.)],
jpayne@68:   [AC_MSG_RESULT(not present.)
jpayne@68:    ifelse([$3], , [AC_MSG_ERROR(Sufficiently new version of libasound not found.)])
jpayne@68:    alsa_found=no]
jpayne@68: )
jpayne@68: AC_LANG_RESTORE
jpayne@68: 
jpayne@68: AC_LANG_SAVE
jpayne@68: AC_LANG_C
jpayne@68: AC_MSG_CHECKING([for libatopology (sound headers version > 1.1.9)])
jpayne@68: AC_TRY_COMPILE([
jpayne@68: #include <alsa/asoundlib.h>
jpayne@68: #include <alsa/topology.h>
jpayne@68: ], [
jpayne@68: /* ensure backward compatibility */
jpayne@68: #if !defined(SND_LIB_VERSION)
jpayne@68: #define SND_LIB_VERSION 0
jpayne@68: #endif
jpayne@68: #if SND_LIB_VERSION > 0x00010109
jpayne@68:   exit(0);
jpayne@68: #else
jpayne@68: # error not present
jpayne@68: #endif
jpayne@68: exit(0);
jpayne@68: ],
jpayne@68:   [AC_MSG_RESULT(yes)
jpayne@68:    enable_atopology="yes"],
jpayne@68:   [AC_MSG_RESULT(no)]
jpayne@68: )
jpayne@68: AC_LANG_RESTORE
jpayne@68: 
jpayne@68: fi
jpayne@68: 
jpayne@68: dnl Now that we know that we have the right version, let's see if we have the library and not just the headers.
jpayne@68: if test "x$enable_alsatest" = "xyes"; then
jpayne@68: AC_CHECK_LIB([asound], [snd_ctl_open],,
jpayne@68: 	[ifelse([$3], , [AC_MSG_ERROR(No linkable libasound was found.)])
jpayne@68: 	 alsa_found=no]
jpayne@68: )
jpayne@68: if test "x$enable_atopology" = "xyes"; then
jpayne@68: alsa_topology_found=yes
jpayne@68: alsa_save_LIBS2="$LIBS"
jpayne@68: AC_CHECK_LIB([atopology], [snd_tplg_new],,
jpayne@68: 	[ifelse([$3], , [AC_MSG_ERROR(No linkable libatopology was found.)])
jpayne@68: 	 alsa_topology_found=no,
jpayne@68: ]
jpayne@68: )
jpayne@68: LIBS="$alsa_save_LIBS2"
jpayne@68: fi
jpayne@68: else
jpayne@68: if test "x$enable_atopology" = "xyes"; then
jpayne@68:   alsa_topology_found=yes
jpayne@68: fi
jpayne@68: fi
jpayne@68: 
jpayne@68: if test "x$alsa_found" = "xyes" ; then
jpayne@68:    ifelse([$2], , :, [$2])
jpayne@68:    LIBS=`echo $LIBS | sed 's/-lasound//g'`
jpayne@68:    LIBS=`echo $LIBS | sed 's/  //'`
jpayne@68:    LIBS="-lasound $LIBS"
jpayne@68: fi
jpayne@68: if test "x$alsa_found" = "xno" ; then
jpayne@68:    ifelse([$3], , :, [$3])
jpayne@68:    CFLAGS="$alsa_save_CFLAGS"
jpayne@68:    LDFLAGS="$alsa_save_LDFLAGS"
jpayne@68:    LIBS="$alsa_save_LIBS"
jpayne@68:    ALSA_CFLAGS=""
jpayne@68:    ALSA_LIBS=""
jpayne@68:    ALSA_TOPOLOGY_LIBS=""
jpayne@68: fi
jpayne@68: 
jpayne@68: dnl add the alsa topology library; must be at the end
jpayne@68: AC_MSG_CHECKING(for ALSA topology LDFLAGS)
jpayne@68: if test "x$alsa_topology_found" = "xyes"; then
jpayne@68:   ALSA_TOPOLOGY_LIBS="$ALSA_TOPOLOGY_LIBS -latopology"
jpayne@68: fi
jpayne@68: AC_MSG_RESULT($ALSA_TOPOLOGY_LIBS)
jpayne@68: 
jpayne@68: dnl That should be it.  Now just export out symbols:
jpayne@68: AC_SUBST(ALSA_CFLAGS)
jpayne@68: AC_SUBST(ALSA_LIBS)
jpayne@68: AC_SUBST(ALSA_TOPOLOGY_LIBS)
jpayne@68: ])