# Configure paths for LIBWMF
# Bernd Herd 28 May 2004 based on the GTK paths M4 script by Owen Taylor

dnl AM_PATH_LIBWMF([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND [, MODULES]]]])
dnl Test for LIBWMF, and define LIBWMF_CFLAGS and LIBWMF_LIBS
dnl
AC_DEFUN(AM_PATH_LIBWMF,
[dnl 
dnl Get the cflags and libraries from the libwmf-config script
dnl
AC_ARG_WITH(libwmf-prefix,[  --with-libwmf-prefix=PFX   Prefix where LIBWMF is installed (optional)],
            libwmf_config_prefix="$withval", libwmf_config_prefix="")
AC_ARG_WITH(libwmf-exec-prefix,[  --with-libwmf-exec-prefix=PFX Exec prefix where LIBWMF is installed (optional)],
            libwmf_config_exec_prefix="$withval", libwmf_config_exec_prefix="")
AC_ARG_ENABLE(libwmftest, [  --disable-libwmftest       Do not try to compile and run a test LIBWMF program],
		    , enable_libwmftest=yes)

  if test x$libwmf_config_exec_prefix != x ; then
     libwmf_config_args="$libwmf_config_args --exec-prefix=$libwmf_config_exec_prefix"
     if test x${LIBWMF_CONFIG+set} != xset ; then
        LIBWMF_CONFIG=$libwmf_config_exec_prefix/bin/libwmf-config
     fi
  fi
  if test x$libwmf_config_prefix != x ; then
     libwmf_config_args="$libwmf_config_args --prefix=$libwmf_config_prefix"
     if test x${LIBWMF_CONFIG+set} != xset ; then
        LIBWMF_CONFIG=$libwmf_config_prefix/bin/libwmf-config
     fi
  fi

  AC_PATH_PROG(LIBWMF_CONFIG, libwmf-config, no)
  min_libwmf_version=ifelse([$1], ,0.2.8,$1)
  AC_MSG_CHECKING(for LIBWMF - version >= $min_libwmf_version)
  no_libwmf=""
  if test "$LIBWMF_CONFIG" = "no" ; then
    no_libwmf=yes
  else
    LIBWMF_CFLAGS="`$LIBWMF_CONFIG $libwmf_config_args --cflags` -DHAVE_LIBWMF=1"
    LIBWMF_LIBS=`$LIBWMF_CONFIG $libwmf_config_args --libs`
    libwmf_config_major_version=`$LIBWMF_CONFIG $libwmf_config_args --version | \
           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
    libwmf_config_minor_version=`$LIBWMF_CONFIG $libwmf_config_args --version | \
           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
    libwmf_config_micro_version=`$LIBWMF_CONFIG $libwmf_config_args --version | \
           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
    if test "x$enable_libwmftest" = "xyes" ; then
      ac_save_CFLAGS="$CFLAGS"
      ac_save_LIBS="$LIBS"
      CFLAGS="$CFLAGS $LIBWMF_CFLAGS"
      LIBS="$LIBWMF_LIBS $LIBS"
dnl
dnl Now check if the installed LIBWMF is sufficiently new. (Also sanity
dnl checks the results of libwmf-config to some extent
dnl
      rm -f conf.libwmftest
      AC_TRY_RUN([
#include <libwmf/api.h>
#include <libwmf/gd.h>
#include <stdio.h>
#include <stdlib.h>

int 
main ()
{
  wmfAPI_Options options;
  wmfAPI* API;
      
  wmf_error_t error;
      
  unsigned long flags;
      
  /* */
      
  flags = WMF_OPT_FUNCTION;
  options.function = wmf_gd_function;
      
  /* Other Options */
  error = wmf_api_create (&API,flags,&options);
  if (error == wmf_E_None)
    {
     system ("touch conf.libwmftest");
    }
  return 0; /* EXIT_SUCCESS */
}
],, no_libwmf=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
       CFLAGS="$ac_save_CFLAGS"
       LIBS="$ac_save_LIBS"
     fi
  fi
  if test "x$no_libwmf" = x ; then
     AC_MSG_RESULT(yes)
     ifelse([$2], , :, [$2])     
  else
     AC_MSG_RESULT(no)
     if test "$LIBWMF_CONFIG" = "no" ; then
       echo "*** The libwmf-config script installed by LIBWMF could not be found"
       echo "*** If LIBWMF was installed in PREFIX, make sure PREFIX/bin is in"
       echo "*** your path, or set the LIBWMF_CONFIG environment variable to the"
       echo "*** full path to libwmf-config."
     else
       if test -f conf.libwmftest ; then
        :
       else
          echo "*** Could not run LIBWMF test program, checking why..."
          CFLAGS="$CFLAGS $LIBWMF_CFLAGS"
          LIBS="$LIBS $LIBWMF_LIBS"
          AC_TRY_LINK([
#include <libwmf/libwmf.h>
#include <stdio.h>
],      [ return ((libwmf_major_version) || (libwmf_minor_version) || (libwmf_micro_version)); ],
        [ echo "*** The test program compiled, but did not run. This usually means"
          echo "*** that the run-time linker is not finding LIBWMF or finding the wrong"
          echo "*** version of LIBWMF. If it is not finding LIBWMF, 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 "***"
          echo "*** If you have a RedHat 5.0 system, you should remove the LIBWMF package that"
          echo "*** came with the system with the command"
          echo "***"
          echo "***    rpm --erase --nodeps libwmf libwmf-devel" ],
        [ echo "*** The test program failed to compile or link. See the file config.log for the"
          echo "*** exact error that occured. This usually means LIBWMF was incorrectly installed"
          echo "*** or that you have moved LIBWMF since it was installed. In the latter case, you"
          echo "*** may want to edit the libwmf-config script: $LIBWMF_CONFIG" ])
          CFLAGS="$ac_save_CFLAGS"
          LIBS="$ac_save_LIBS"
       fi
     fi
     LIBWMF_CFLAGS=""
     LIBWMF_LIBS=""
     ifelse([$3], , :, [$3])
  fi
  AC_SUBST(LIBWMF_CFLAGS)
  AC_SUBST(LIBWMF_LIBS)
  rm -f conf.libwmftest
])