# ao.m4 # Configure paths for libao # Jack Moffitt <jack@icecast.org> 10-21-2000 # Shamelessly stolen from Owen Taylor and Manish Singh dnl XIPH_PATH_AO([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]) dnl Test for libao, and define AO_CFLAGS and AO_LIBS dnl AC_DEFUN([XIPH_PATH_AO], [dnl dnl Get the cflags and libraries dnl AC_ARG_WITH(ao,[ --with-ao=PFX Prefix where libao is installed (optional)], ao_prefix="$withval", ao_prefix="") AC_ARG_WITH(ao-libraries,[ --with-ao-libraries=DIR Directory where libao library is installed (optional)], ao_libraries="$withval", ao_libraries="") AC_ARG_WITH(ao-includes,[ --with-ao-includes=DIR Directory where libao header files are installed (optional)], ao_includes="$withval", ao_includes="") AC_ARG_ENABLE(aotest, [ --disable-aotest Do not try to compile and run a test ao program],, enable_aotest=yes) if test "x$ao_libraries" != "x" ; then AO_LIBS="-L$ao_libraries" elif test "x$ao_prefix" != "x"; then AO_LIBS="-L$ao_prefix/lib" elif test "x$prefix" != "xNONE"; then AO_LIBS="-L$prefix/lib" fi if test "x$ao_includes" != "x" ; then AO_CFLAGS="-I$ao_includes" elif test "x$ao_prefix" != "x"; then AO_CFLAGS="-I$ao_prefix/include" elif test "x$prefix" != "xNONE"; then AO_CFLAGS="-I$prefix/include" fi # see where dl* and friends live AC_CHECK_FUNCS(dlopen, [AO_DL_LIBS=""], [ AC_CHECK_LIB(dl, dlopen, [AO_DL_LIBS="-ldl"], [ AC_MSG_WARN([could not find dlopen() needed by libao sound drivers your system may not be supported.]) ]) ]) AO_LIBS="$AO_LIBS -lao $AO_DL_LIBS" AC_MSG_CHECKING(for ao) no_ao="" if test "x$enable_aotest" = "xyes" ; then ac_save_CFLAGS="$CFLAGS" ac_save_LIBS="$LIBS" CFLAGS="$CFLAGS $AO_CFLAGS" LIBS="$LIBS $AO_LIBS" dnl dnl Now check if the installed ao is sufficiently new. dnl rm -f conf.aotest AC_TRY_RUN([ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <ao/ao.h> int main () { system("touch conf.aotest"); return 0; } ],, no_ao=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"]) CFLAGS="$ac_save_CFLAGS" LIBS="$ac_save_LIBS" fi if test "x$no_ao" = "x" ; then AC_MSG_RESULT(yes) ifelse([$1], , :, [$1]) else AC_MSG_RESULT(no) if test -f conf.aotest ; then : else echo "*** Could not run ao test program, checking why..." CFLAGS="$CFLAGS $AO_CFLAGS" LIBS="$LIBS $AO_LIBS" AC_TRY_LINK([ #include <stdio.h> #include <ao/ao.h> ], [ return 0; ], [ echo "*** The test program compiled, but did not run. This usually means" echo "*** that the run-time linker is not finding ao or finding the wrong" echo "*** version of ao. If it is not finding ao, you'll need to set your" echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point" echo "*** to the installed location Also, make sure you have run ldconfig if that" echo "*** is required on your system" echo "***" echo "*** If you have an old version installed, it is best to remove it, although" echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"], [ echo "*** The test program failed to compile or link. See the file config.log for the" echo "*** exact error that occured. This usually means ao was incorrectly installed" echo "*** or that you have moved ao since it was installed." ]) CFLAGS="$ac_save_CFLAGS" LIBS="$ac_save_LIBS" fi AO_CFLAGS="" AO_LIBS="" ifelse([$2], , :, [$2]) fi AC_SUBST(AO_CFLAGS) AC_SUBST(AO_LIBS) rm -f conf.aotest ])