diff -up yelp-2.23.1/configure.in.libxul yelp-2.23.1/configure.in
--- yelp-2.23.1/configure.in.libxul	2008-06-20 13:58:52.000000000 -0400
+++ yelp-2.23.1/configure.in	2008-06-20 13:59:02.000000000 -0400
@@ -248,7 +248,7 @@ if test $MOZILLA = libxul-embedding; the
 	PKG_CHECK_MODULES([MOZILLA_COMPONENT],[libxul-embedding $gecko_cv_extra_pkg_dependencies])
 	MOZILLA_COMPONENT_CFLAGS="$MOZILLA_COMPONENT_CFLAGS `$PKG_CONFIG --cflags ${gecko_cv_gecko}` `$PKG_CONFIG --define-variable=includetype=unstable --cflags ${gecko_cv_gecko}`"
 else
-	PKG_CHECK_MODULES([MOZILLA_COMPONENT],[${gecko_cv_gecko}-xpcom >= $gecko_min_version $gecko_cv_extra_pkg_dependencies])
+	PKG_CHECK_MODULES([MOZILLA_COMPONENT],[${gecko_cv_gecko} >= $gecko_min_version $gecko_cv_extra_pkg_dependencies])
 fi
 
 # Set flags