--- abiword/trunk/plugins/grammar/plugin.m4	2010/05/25 10:09:01	28902
+++ abiword/trunk/plugins/grammar/plugin.m4	2015/09/09 14:14:20	35098
@@ -22,6 +22,10 @@
 fi
 
 PKG_CHECK_MODULES(GRAMMAR,[ $grammar_pkgs ])
+PKG_CHECK_EXISTS([ link-grammar >= 5.1.0 ], 
+[
+	AC_DEFINE([HAVE_LINK_GRAMMAR_51],[1],["have link-grammar 5.1.0 or later"])
+])
 
 test "$enable_grammar" = "auto" && PLUGINS="$PLUGINS grammar"