--- configure.ac.orig	2008-10-17 19:31:54.124969280 +0200
+++ configure.ac	2008-10-17 19:45:06.194891800 +0200
@@ -669,7 +669,7 @@
 
   dnl Check for plugin support headers and libraries.
   if test "x${COMPILE_PLUGIN}" = xyes; then
-    PKG_CHECK_MODULES(MOZILLA, mozilla-plugin, [MOZILLA_FOUND=yes], [MOZILLA_FOUND=no])
+    PKG_CHECK_MODULES(MOZILLA, xulrunner-plugin xulrunner-xpcom, [MOZILLA_FOUND=yes], [MOZILLA_FOUND=no])
     if test "x${MOZILLA_FOUND}" = xno; then
       PKG_CHECK_MODULES(MOZILLA, firefox-plugin firefox-xpcom, [MOZILLA_FOUND=yes], [MOZILLA_FOUND=no])
     fi