ref: 0719e7bd174969a6c9f0f6aba4bd4683a8d75654
dir: /m4/ogg.m4/
# Configure paths for libogg # Jack Moffitt <[email protected]> 10-21-2000 # Shamelessly stolen from Owen Taylor and Manish Singh dnl XIPH_PATH_OGG([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]) dnl Test for libogg, and define OGG_CFLAGS and OGG_LIBS dnl AC_DEFUN([XIPH_PATH_OGG], [dnl dnl Get the cflags and libraries dnl AC_ARG_WITH(ogg,AC_HELP_STRING([--with-ogg=PFX],[Prefix where libogg is installed (optional)]), ogg_prefix="$withval", ogg_prefix="") AC_ARG_WITH(ogg-libraries,AC_HELP_STRING([--with-ogg-libraries=DIR],[Directory where libogg library is installed (optional)]), ogg_libraries="$withval", ogg_libraries="") AC_ARG_WITH(ogg-includes,AC_HELP_STRING([--with-ogg-includes=DIR],[Directory where libogg header files are installed (optional)]), ogg_includes="$withval", ogg_includes="") AC_ARG_ENABLE(oggtest,AC_HELP_STRING([--disable-oggtest],[Do not try to compile and run a test Ogg program]),, enable_oggtest=yes) if test "x$ogg_libraries" != "x" ; then OGG_LIBS="-L$ogg_libraries" elif test "x$ogg_prefix" = "xno" || test "x$ogg_prefix" = "xyes" ; then OGG_LIBS="" elif test "x$ogg_prefix" != "x" ; then OGG_LIBS="-L$ogg_prefix/lib" elif test "x$prefix" != "xNONE" ; then OGG_LIBS="-L$prefix/lib" fi if test "x$ogg_prefix" != "xno" ; then OGG_LIBS="$OGG_LIBS -logg" fi if test "x$ogg_includes" != "x" ; then OGG_CFLAGS="-I$ogg_includes" elif test "x$ogg_prefix" = "xno" || test "x$ogg_prefix" = "xyes" ; then OGG_CFLAGS="" elif test "x$ogg_prefix" != "x" ; then OGG_CFLAGS="-I$ogg_prefix/include" elif test "x$prefix" != "xNONE"; then OGG_CFLAGS="-I$prefix/include" fi AC_MSG_CHECKING(for Ogg) if test "x$ogg_prefix" = "xno" ; then no_ogg="disabled" enable_oggtest="no" else no_ogg="" fi if test "x$enable_oggtest" = "xyes" ; then ac_save_CFLAGS="$CFLAGS" ac_save_LIBS="$LIBS" CFLAGS="$CFLAGS $OGG_CFLAGS" LIBS="$LIBS $OGG_LIBS" dnl dnl Now check if the installed Ogg is sufficiently new. dnl rm -f conf.oggtest AC_TRY_RUN([ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <ogg/ogg.h> int main () { system("touch conf.oggtest"); return 0; } ],, no_ogg=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"]) CFLAGS="$ac_save_CFLAGS" LIBS="$ac_save_LIBS" fi if test "x$no_ogg" = "xdisabled" ; then AC_MSG_RESULT(no) ifelse([$2], , :, [$2]) elif test "x$no_ogg" = "x" ; then AC_MSG_RESULT(yes) ifelse([$1], , :, [$1]) else AC_MSG_RESULT(no) if test -f conf.oggtest ; then : else echo "*** Could not run Ogg test program, checking why..." CFLAGS="$CFLAGS $OGG_CFLAGS" LIBS="$LIBS $OGG_LIBS" AC_TRY_LINK([ #include <stdio.h> #include <ogg/ogg.h> ], [ return 0; ], [ echo "*** The test program compiled, but did not run. This usually means" echo "*** that the run-time linker is not finding Ogg or finding the wrong" echo "*** version of Ogg. If it is not finding Ogg, you'll need to set your" echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point" echo "*** to the installed location Also, make sure you have run ldconfig if that" echo "*** is required on your system" echo "***" echo "*** If you have an old version installed, it is best to remove it, although" echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"], [ echo "*** The test program failed to compile or link. See the file config.log for the" echo "*** exact error that occured. This usually means Ogg was incorrectly installed" echo "*** or that you have moved Ogg since it was installed." ]) CFLAGS="$ac_save_CFLAGS" LIBS="$ac_save_LIBS" fi OGG_CFLAGS="" OGG_LIBS="" ifelse([$2], , :, [$2]) fi AC_SUBST(OGG_CFLAGS) AC_SUBST(OGG_LIBS) rm -f conf.oggtest ])