speex.m4

# Configure paths for libspeex
# Jean-Marc Valin <jean-marc.valin@usherbrooke.ca>
# Shamelessly stolen from:
# Jack Moffitt <jack@icecast.org> 10-21-2000
# Shamelessly stolen from Owen Taylor and Manish Singh

dnl XIPH_PATH_SPEEX([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
dnl Test for libspeex, and define SPEEX_CFLAGS and SPEEX_LIBS
dnl
AC_DEFUN([XIPH_PATH_SPEEX],
[dnl 
dnl Get the cflags and libraries
dnl
AC_ARG_WITH(speex,[  --with-speex=PFX   Prefix where libspeex is installed (optional)], speex_prefix="$withval", speex_prefix="")
AC_ARG_WITH(speex-libraries,[  --with-speex-libraries=DIR   Directory where libspeex library is installed (optional)], speex_libraries="$withval", speex_libraries="")
AC_ARG_WITH(speex-includes,[  --with-speex-includes=DIR   Directory where libspeex header files are installed (optional)], speex_includes="$withval", speex_includes="")
AC_ARG_ENABLE(speextest, [  --disable-speextest       Do not try to compile and run a test Speex program],, enable_speextest=yes)

  if test "x$speex_libraries" != "x" ; then
    SPEEX_LIBS="-L$speex_libraries"
  elif test "x$speex_prefix" = "xno" || test "x$speex_prefix" = "xyes" ; then
    SPEEX_LIBS=""
  elif test "x$speex_prefix" != "x" ; then
    SPEEX_LIBS="-L$speex_prefix/lib"
  elif test "x$prefix" != "xNONE" ; then
    SPEEX_LIBS="-L$prefix/lib"
  fi

  if test "x$speex_prefix" != "xno" ; then
    SPEEX_LIBS="$SPEEX_LIBS -lspeex"
  fi

  if test "x$speex_includes" != "x" ; then
    SPEEX_CFLAGS="-I$speex_includes"
  elif test "x$speex_prefix" = "xno" || test "x$speex_prefix" = "xyes" ; then
    SPEEX_CFLAGS=""
  elif test "x$speex_prefix" != "x" ; then
    SPEEX_CFLAGS="-I$speex_prefix/include"
  elif test "x$prefix" != "xNONE"; then
    SPEEX_CFLAGS="-I$prefix/include"
  fi

  AC_MSG_CHECKING(for Speex)
  if test "x$speex_prefix" = "xno" ; then
    no_speex="disabled"
    enable_speextest="no"
  else
    no_speex=""
  fi


  if test "x$enable_speextest" = "xyes" ; then
    ac_save_CFLAGS="$CFLAGS"
    ac_save_LIBS="$LIBS"
    CFLAGS="$CFLAGS $SPEEX_CFLAGS"
    LIBS="$LIBS $SPEEX_LIBS"
dnl
dnl Now check if the installed Speex is sufficiently new.
dnl
      rm -f conf.speextest
      AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <speex/speex.h>

int main (void)
{
  system("touch conf.speextest");
  return 0;
}

]])],[],[no_speex=yes],[echo $ac_n "cross compiling; assumed OK... $ac_c"])
       CFLAGS="$ac_save_CFLAGS"
       LIBS="$ac_save_LIBS"
  fi

  if test "x$no_speex" = "xdisabled" ; then
     AC_MSG_RESULT(no)
     ifelse([$2], , :, [$2])
  elif test "x$no_speex" = "x" ; then
     AC_MSG_RESULT(yes)
     ifelse([$1], , :, [$1])
  else
     AC_MSG_RESULT(no)
     if test -f conf.speextest ; then
       :
     else
       echo "*** Could not run Speex test program, checking why..."
       CFLAGS="$CFLAGS $SPEEX_CFLAGS"
       LIBS="$LIBS $SPEEX_LIBS"
       AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <stdio.h>
#include <speex/speex.h>
]], [[ return 0; ]])],[ echo "*** The test program compiled, but did not run. This usually means"
       echo "*** that the run-time linker is not finding Speex or finding the wrong"
       echo "*** version of Speex. If it is not finding Speex, you'll need to set your"
       echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
       echo "*** to the installed location  Also, make sure you have run ldconfig if that"
       echo "*** is required on your system"
       echo "***"
       echo "*** If you have an old version installed, it is best to remove it, although"
       echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],[ echo "*** The test program failed to compile or link. See the file config.log for the"
       echo "*** exact error that occurred. This usually means Speex was incorrectly installed"
       echo "*** or that you have moved Speex since it was installed." ])
       CFLAGS="$ac_save_CFLAGS"
       LIBS="$ac_save_LIBS"
     fi
     SPEEX_CFLAGS=""
     SPEEX_LIBS=""
     ifelse([$2], , :, [$2])
  fi
  AC_SUBST(SPEEX_CFLAGS)
  AC_SUBST(SPEEX_LIBS)
  rm -f conf.speextest
])