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# Configure paths for libtheora
# Andreas Heinchen <andreas.heinchen@gmx.de> 04-18-2003
# Shamelessly adapted from Jack Moffitt's version for libvorbis
# who had stolen it from Owen Taylor and Manish Singh
dnl AM_PATH_THEORA([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
dnl Test for libtheora, and define THEORA_CFLAGS and THEORA_LIBS
dnl
AC_DEFUN([AM_PATH_THEORA],
[dnl
dnl Get the cflags and libraries
dnl
AC_ARG_WITH(theora-prefix,[ --with-theora-prefix=PFX Prefix where libtheora is installed (optional)], theora_prefix="$withval", theora_prefix="")
AC_ARG_ENABLE(theoratest, [ --disable-theoratest Do not try to compile and run a test Vorbis program],, enable_theoratest=yes)
if test x$theora_prefix != x ; then
theora_args="$theora_args --prefix=$theora_prefix"
THEORA_CFLAGS="-I$theora_prefix/include"
THEORA_LIBDIR="-L$theora_prefix/lib"
fi
THEORA_LIBS="$THEORA_LIBDIR -ltheora -lm"
AC_MSG_CHECKING(for Theora)
no_theora=""
if test "x$enable_theoratest" = "xyes" ; then
ac_save_CFLAGS="$CFLAGS"
ac_save_LIBS="$LIBS"
CFLAGS="$CFLAGS $THEORA_CFLAGS"
LIBS="$LIBS $THEORA_LIBS $OGG_LIBS"
dnl
dnl Now check if the installed Theora is sufficiently new.
dnl
rm -f conf.theoratest
AC_TRY_RUN([
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <theora/theora.h>
int main ()
{
system("touch conf.theoratest");
return 0;
}
],, no_theora=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
fi
if test "x$no_theora" = x ; then
AC_MSG_RESULT(yes)
ifelse([$1], , :, [$1])
else
AC_MSG_RESULT(no)
if test -f conf.theoratest ; then
:
else
echo "*** Could not run Theora test program, checking why..."
CFLAGS="$CFLAGS $THEORA_CFLAGS"
LIBS="$LIBS $THEORA_LIBS $OGG_LIBS"
AC_TRY_LINK([
#include <stdio.h>
#include <theora/theora.h>
], [ return 0; ],
[ echo "*** The test program compiled, but did not run. This usually means"
echo "*** that the run-time linker is not finding Theora or finding the wrong"
echo "*** version of Theora. If it is not finding Theora, you'll need to set your"
echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
echo "*** to the installed location Also, make sure you have run ldconfig if that"
echo "*** is required on your system"
echo "***"
echo "*** If you have an old version installed, it is best to remove it, although"
echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
[ echo "*** The test program failed to compile or link. See the file config.log for the"
echo "*** exact error that occured. This usually means Theora was incorrectly installed"
echo "*** or that you have moved Theora since it was installed." ])
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
fi
THEORA_CFLAGS=""
THEORA_LIBS=""
THEORAFILE_LIBS=""
THEORAENC_LIBS=""
ifelse([$2], , :, [$2])
fi
AC_SUBST(THEORA_CFLAGS)
AC_SUBST(THEORA_LIBS)
AC_SUBST(THEORAFILE_LIBS)
AC_SUBST(THEORAENC_LIBS)
rm -f conf.theoratest
])
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