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Diffstat (limited to 'm4/alsa.m4')
| -rw-r--r-- | m4/alsa.m4 | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/m4/alsa.m4 b/m4/alsa.m4 new file mode 100644 index 000000000..1bf79078b --- /dev/null +++ b/m4/alsa.m4 @@ -0,0 +1,175 @@ +dnl Configure paths/version for ALSA +dnl +dnl Copyright (C) 2000 Daniel Caujolle-Bert <lobadia@club-internet.fr> +dnl +dnl This program is free software; you can redistribute it and/or modify +dnl it under the terms of the GNU General Public License as published by +dnl the Free Software Foundation; either version 2 of the License, or +dnl (at your option) any later version. +dnl +dnl This program is distributed in the hope that it will be useful, +dnl but WITHOUT ANY WARRANTY; without even the implied warranty of +dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +dnl GNU General Public License for more details. +dnl +dnl You should have received a copy of the GNU General Public License +dnl along with this program; if not, write to the Free Software +dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +dnl +dnl +dnl As a special exception to the GNU General Public License, if you +dnl distribute this file as part of a program that contains a configuration +dnl script generated by Autoconf, you may include it under the same +dnl distribution terms that you use for the rest of that program. +dnl +dnl USAGE: +dnl AM_PATH_ALSA([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]]) +dnl Test for ALSA, then +dnl AC_SUBST() for ALSA_CFLAGS, ALSA_LIBS and ALSA_STATIC_LIB, +dnl AC_DEFINE() HAVE_GL, +dnl $no_alsa is set to "yes" if alsa isn't found. +dnl +AC_DEFUN(AM_PATH_ALSA, + [ + AC_ARG_ENABLE(alsa, [ --disable-alsa Do not build ALSA support],,) + AC_ARG_WITH(alsa-prefix,[ --with-alsa-prefix=pfx Prefix where alsa is installed (optional)], + alsa_prefix="$withval", alsa_prefix="") + AC_ARG_WITH(alsa-exec-prefix,[ --with-alsa-exec-prefix=pfx Exec prefix where alsa is installed (optional)], + alsa_exec_prefix="$withval", alsa_exec_prefix="") + AC_ARG_ENABLE(alsatest, [ --disable-alsatest Do not try to compile and run a test alsa program],, enable_alsatest=yes) + + no_alsa="yes" + +if test x"$enable_alsa" != "xno"; then + + if test x$alsa_prefix != x ; then + ALSA_LIBS="-L$alsa_prefix/lib" + ALSA_STATIC_LIB="$alsa_prefix" + ALSA_CFLAGS="-I$alsa_prefix/include" + fi + if test x$alsa_exec_prefix != x ; then + ALSA_LIBS="-L$alsa_exec_prefix/lib" + ALSA_STATIC_LIB="$alsa_exec_prefix" + ALSA_CFLAGS="-I$alsa_exec_prefix/include" + fi + + ALSA_LIBS="-lasound $ALSA_LIBS" + if test x$ALSA_STATIC_LIB != x; then + ALSA_STATIC_LIB="$ALSA_STATIC_LIB/lib/libasound.a" + else + ALSA_STATIC_LIB="/usr/lib/libasound.a" + fi + ALSA_CFLAGS="$ALSA_CFLAGS" + + min_alsa_version=ifelse([$1], ,0.1.1,$1) + AC_MSG_CHECKING(for ALSA version >= $min_alsa_version) + if test "x$enable_alsatest" = "xyes" ; then + no_alsa="" + ac_save_CFLAGS="$CFLAGS" + ac_save_LIBS="$LIBS" + CFLAGS="$CFLAGS $ALSA_CFLAGS" + LIBS="$ALSA_LIBS $LIBS" +dnl +dnl Now check if the installed ALSA is sufficiently new. +dnl + AC_LANG_SAVE() + AC_LANG_C() + rm -f conf.alsatest + AC_TRY_RUN([ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include <sys/asoundlib.h> + +int main() { + int major, minor, micro; + char *tmp_version; + + system("touch conf.alsatest"); + + tmp_version = strdup("$min_alsa_version"); + if(sscanf(tmp_version, "%d.%d.%d", &major, &minor, µ) != 3) { + printf("%s, bad version string\n", "$min_alsa_version"); + exit(1); + } + + #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 > major) || + ((SND_LIB_MAJOR == major) && (SND_LIB_MINOR > minor)) || + ((SND_LIB_MAJOR == major) && (SND_LIB_MINOR == minor) && (SND_LIB_SUBMINOR >= micro))) { + return 0; + } + else { + printf("\n*** An old version of ALSA (%d.%d.%d) was found.\n", + SND_LIB_MAJOR, SND_LIB_MINOR, SND_LIB_SUBMINOR); + printf("*** You need a version of ALSA newer than %d.%d.%d. The latest version of\n", major, minor, micro); + printf("*** ALSA is always available from: http://www.alsa-drivers.org/\n"); + printf("***\n"); + printf("*** If you have already installed a sufficiently new version\n"); + printf("*** the easiest way to fix this is to remove the old version, and\n"); + printf("*** install a new one.\n"); + } + return 1; +} +],, no_alsa=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"]) + CFLAGS="$ac_save_CFLAGS" + LIBS="$ac_save_LIBS" + fi + + if test "x$no_alsa" = x ; then + AC_MSG_RESULT(yes) + ifelse([$2], , :, [$2]) + else + AC_MSG_RESULT(no) + if test -f conf.alsatest ; then + : + else + echo "*** Could not run ALSA test program, checking why..." + CFLAGS="$CFLAGS $ALSA_CFLAGS" + LIBS="$LIBS $ALSA_LIBS" + AC_TRY_LINK([ +#include <sys/asoudlib.h> +#include <stdio.h> +], + [return ((SND_LIB_MAJOR) || (SND_LIB_MINOR) || (SND_LIB_SUBMINOR));], + [ echo "*** The test program compiled, but did not run. This usually means" + echo "*** that the run-time linker is not finding ALSA or finding the wrong" + echo "*** version of ALSA. If it is not finding ALSA, you'll need to set your" + echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point" + echo "*** to the installed location Also, make sure you have run ldconfig if that" + echo "*** is required on your system" + echo "***" + echo "*** If you have an old version installed, it is best to remove it, although" + echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH" + echo "***"], + [ echo "*** The test program failed to compile or link. See the file config.log for the" + echo "*** exact error that occured. This usually means ALSA was incorrectly installed."]) + CFLAGS="$ac_save_CFLAGS" + LIBS="$ac_save_LIBS" + fi + + ALSA_CFLAGS="" + ALSA_STATIC_LIB="" + ALSA_LIBS="" + ifelse([$3], , :, [$3]) + fi + +fi + + AC_SUBST(ALSA_CFLAGS) + AC_SUBST(ALSA_STATIC_LIB) + AC_SUBST(ALSA_LIBS) + AC_LANG_RESTORE() + rm -f conf.alsatest +]) + |