AC_DEFUN([AX_SAGA_CHECK_ANTLR],
[
  AC_PATH_PROG(SAGA_ANTLR,     antlr)
  AC_PATH_PROG(SAGA_ANTLRCFG,  antlr-config)
  AC_MSG_CHECKING(for antlr devel)
  HAVE_ANTLR=no

  if ! test "x$SAGA_ANTLR" = "x"; then
    if ! test "x$SAGA_ANTLRCFG" = "x"; then

      ANTLR_PREFIX=`$SAGA_ANTLRCFG --prefix`

      if test -f $ANTLR_PREFIX/include/antlr/config.hpp; then
        ANTLR_LOCATION=`$SAGA_ANTLRCFG --prefix`
        ANTLR_CCFLAGS=`$SAGA_ANTLRCFG --cflags`
        ANTLR_CXXFLAGS=`$SAGA_ANTLRCFG --cxxflags`
        ANTLR_LDFLAGS=`$SAGA_ANTLRCFG --libs`
        ANTLR_S_LIBS=`$SAGA_ANTLRCFG --libs`
        # antlr uses static libs

        HAVE_ANTLR=yes
      fi
    fi
  fi

  if test "$HAVE_ANTLR" = "no"; then
    SAGA_HAVE_INTERNAL_ANTLR=yes
    HAVE_ANTLR=internal
  fi

  AC_MSG_RESULT([$HAVE_ANTLR])

  AC_SUBST(HAVE_ANTLR)
  AC_SUBST(SAGA_HAVE_INTERNAL_ANTLR)
  AC_SUBST(ANTLR_LOCATION)
  AC_SUBST(ANTLR_CCFLAGS)
  AC_SUBST(ANTLR_CXXFLAGS)
  AC_SUBST(ANTLR_LDFLAGS)
  AC_SUBST(ANTLR_S_LIBS)
])