cannam@154: # Configure paths for libopus
cannam@154: # Gregory Maxwell <greg@xiph.org> 08-30-2012
cannam@154: # Shamelessly stolen from Jack Moffitt (libogg) who
cannam@154: # Shamelessly stole from Owen Taylor and Manish Singh
cannam@154: 
cannam@154: dnl XIPH_PATH_OPUS([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
cannam@154: dnl Test for libopus, and define OPUS_CFLAGS and OPUS_LIBS
cannam@154: dnl
cannam@154: AC_DEFUN([XIPH_PATH_OPUS],
cannam@154: [dnl
cannam@154: dnl Get the cflags and libraries
cannam@154: dnl
cannam@154: AC_ARG_WITH(opus,AC_HELP_STRING([--with-opus=PFX],[Prefix where opus is installed (optional)]), opus_prefix="$withval", opus_prefix="")
cannam@154: AC_ARG_WITH(opus-libraries,AC_HELP_STRING([--with-opus-libraries=DIR],[Directory where the opus library is installed (optional)]), opus_libraries="$withval", opus_libraries="")
cannam@154: AC_ARG_WITH(opus-includes,AC_HELP_STRING([--with-opus-includes=DIR],[Directory where the opus header files are installed (optional)]), opus_includes="$withval", opus_includes="")
cannam@154: AC_ARG_ENABLE(opustest,AC_HELP_STRING([--disable-opustest],[Do not try to compile and run a test opus program]),, enable_opustest=yes)
cannam@154: 
cannam@154:   if test "x$opus_libraries" != "x" ; then
cannam@154:     OPUS_LIBS="-L$opus_libraries"
cannam@154:   elif test "x$opus_prefix" = "xno" || test "x$opus_prefix" = "xyes" ; then
cannam@154:     OPUS_LIBS=""
cannam@154:   elif test "x$opus_prefix" != "x" ; then
cannam@154:     OPUS_LIBS="-L$opus_prefix/lib"
cannam@154:   elif test "x$prefix" != "xNONE" ; then
cannam@154:     OPUS_LIBS="-L$prefix/lib"
cannam@154:   fi
cannam@154: 
cannam@154:   if test "x$opus_prefix" != "xno" ; then
cannam@154:     OPUS_LIBS="$OPUS_LIBS -lopus"
cannam@154:   fi
cannam@154: 
cannam@154:   if test "x$opus_includes" != "x" ; then
cannam@154:     OPUS_CFLAGS="-I$opus_includes"
cannam@154:   elif test "x$opus_prefix" = "xno" || test "x$opus_prefix" = "xyes" ; then
cannam@154:     OPUS_CFLAGS=""
cannam@154:   elif test "x$opus_prefix" != "x" ; then
cannam@154:     OPUS_CFLAGS="-I$opus_prefix/include"
cannam@154:   elif test "x$prefix" != "xNONE"; then
cannam@154:     OPUS_CFLAGS="-I$prefix/include"
cannam@154:   fi
cannam@154: 
cannam@154:   AC_MSG_CHECKING(for Opus)
cannam@154:   if test "x$opus_prefix" = "xno" ; then
cannam@154:     no_opus="disabled"
cannam@154:     enable_opustest="no"
cannam@154:   else
cannam@154:     no_opus=""
cannam@154:   fi
cannam@154: 
cannam@154: 
cannam@154:   if test "x$enable_opustest" = "xyes" ; then
cannam@154:     ac_save_CFLAGS="$CFLAGS"
cannam@154:     ac_save_LIBS="$LIBS"
cannam@154:     CFLAGS="$CFLAGS $OPUS_CFLAGS"
cannam@154:     LIBS="$LIBS $OPUS_LIBS"
cannam@154: dnl
cannam@154: dnl Now check if the installed Opus is sufficiently new.
cannam@154: dnl
cannam@154:       rm -f conf.opustest
cannam@154:       AC_TRY_RUN([
cannam@154: #include <stdio.h>
cannam@154: #include <stdlib.h>
cannam@154: #include <string.h>
cannam@154: #include <opus.h>
cannam@154: 
cannam@154: int main ()
cannam@154: {
cannam@154:   system("touch conf.opustest");
cannam@154:   return 0;
cannam@154: }
cannam@154: 
cannam@154: ],, no_opus=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
cannam@154:        CFLAGS="$ac_save_CFLAGS"
cannam@154:        LIBS="$ac_save_LIBS"
cannam@154:   fi
cannam@154: 
cannam@154:   if test "x$no_opus" = "xdisabled" ; then
cannam@154:      AC_MSG_RESULT(no)
cannam@154:      ifelse([$2], , :, [$2])
cannam@154:   elif test "x$no_opus" = "x" ; then
cannam@154:      AC_MSG_RESULT(yes)
cannam@154:      ifelse([$1], , :, [$1])
cannam@154:   else
cannam@154:      AC_MSG_RESULT(no)
cannam@154:      if test -f conf.opustest ; then
cannam@154:        :
cannam@154:      else
cannam@154:        echo "*** Could not run Opus test program, checking why..."
cannam@154:        CFLAGS="$CFLAGS $OPUS_CFLAGS"
cannam@154:        LIBS="$LIBS $OPUS_LIBS"
cannam@154:        AC_TRY_LINK([
cannam@154: #include <stdio.h>
cannam@154: #include <opus.h>
cannam@154: ],     [ return 0; ],
cannam@154:        [ echo "*** The test program compiled, but did not run. This usually means"
cannam@154:        echo "*** that the run-time linker is not finding Opus or finding the wrong"
cannam@154:        echo "*** version of Opus. If it is not finding Opus, you'll need to set your"
cannam@154:        echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
cannam@154:        echo "*** to the installed location  Also, make sure you have run ldconfig if that"
cannam@154:        echo "*** is required on your system"
cannam@154:        echo "***"
cannam@154:        echo "*** If you have an old version installed, it is best to remove it, although"
cannam@154:        echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
cannam@154:        [ echo "*** The test program failed to compile or link. See the file config.log for the"
cannam@154:        echo "*** exact error that occurred. This usually means Opus was incorrectly installed"
cannam@154:        echo "*** or that you have moved Opus since it was installed." ])
cannam@154:        CFLAGS="$ac_save_CFLAGS"
cannam@154:        LIBS="$ac_save_LIBS"
cannam@154:      fi
cannam@154:      OPUS_CFLAGS=""
cannam@154:      OPUS_LIBS=""
cannam@154:      ifelse([$2], , :, [$2])
cannam@154:   fi
cannam@154:   AC_SUBST(OPUS_CFLAGS)
cannam@154:   AC_SUBST(OPUS_LIBS)
cannam@154:   rm -f conf.opustest
cannam@154: ])