# Configure paths for Tremor

dnl XIPH_PATH_IVORBIS([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])

dnl Test for libivorbis, and define IVORBIS_CFLAGS and IVORBIS_LIBS

dnl

AC_DEFUN([XIPH_PATH_IVORBIS],

[dnl 

dnl Get the cflags and libraries

dnl

AC_ARG_WITH(ivorbis,[  --with-ivorbis=PFX   Prefix where libivorbis is installed (optional)], ivorbis_prefix="$withval", ivorbis_prefix="")

AC_ARG_WITH(ivorbis-libraries,[  --with-ivorbis-libraries=DIR   Directory where libivorbis library is installed (optional)], ivorbis_libraries="$withval", ivorbis_libraries="")

AC_ARG_WITH(ivorbis-includes,[  --with-ivorbis-includes=DIR   Directory where libivorbis header files are installed (optional)], ivorbis_includes="$withval", ivorbis_includes="")

AC_ARG_ENABLE(ivorbistest, [  --disable-ivorbistest       Do not try to compile and run a test Ivorbis program],, enable_ivorbistest=yes)

  if test "x$ivorbis_libraries" != "x" ; then

    IVORBIS_LIBS="-L$ivorbis_libraries"

  elif test "x$ivorbis_prefix" != "x" ; then

    IVORBIS_LIBS="-L$ivorbis_prefix/lib"

  elif test "x$prefix" != "xNONE"; then

    IVORBIS_LIBS="-L$prefix/lib"

  fi

  IVORBIS_LIBS="$IVORBIS_LIBS -lvorbisidec -lm"

  if test "x$ivorbis_includes" != "x" ; then

    IVORBIS_CFLAGS="-I$ivorbis_includes"

  elif test "x$ivorbis_prefix" != "x" ; then

    IVORBIS_CFLAGS="-I$ivorbis_prefix/include"

  elif test "x$prefix" != "xNONE"; then

    IVORBIS_CFLAGS="-I$prefix/include"

  fi

  AC_MSG_CHECKING(for Tremor)

  no_ivorbis=""

  if test "x$enable_ivorbistest" = "xyes" ; then

    ac_save_CFLAGS="$CFLAGS"

    ac_save_LIBS="$LIBS"

    CFLAGS="$CFLAGS $IVORBIS_CFLAGS $OGG_CFLAGS"

    LIBS="$LIBS $IVORBIS_LIBS $OGG_LIBS"

dnl

dnl Now check if the installed Tremor is sufficiently new.

dnl

      rm -f conf.ivorbistest

      AC_TRY_COMPILE([

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <tremor/codec.h>

],,, no_ivorbis=yes)

       CFLAGS="$ac_save_CFLAGS"

       LIBS="$ac_save_LIBS"

  fi

  if test "x$no_ivorbis" = "x" ; then

     AC_MSG_RESULT(yes)

     ifelse([$1], , :, [$1])     

  else

     AC_MSG_RESULT(no)

     IVORBIS_CFLAGS=""

     IVORBIS_LIBS=""

     IVORBISFILE_LIBS=""

     ifelse([$2], , :, [$2])

  fi

  AC_SUBST(IVORBIS_CFLAGS)

  AC_SUBST(IVORBIS_LIBS)

  AC_SUBST(IVORBISFILE_LIBS)

])