--- configure.ac-orig	2010-01-17 12:35:30.622293199 -0600
+++ configure.ac-orig	2010-01-17 12:33:46.788291732 -0600
@@ -5631,7 +5631,8 @@ 
       found=1
     else
       if test -n "$PKG_CONFIG"; then
-	for i in "${with_mozilla_pkg}" libxul {seamonkey,iceape,xulrunner,firefox,iceweasel,mozilla}-plugin; do
+	dnl We must check for proper nspr cflags/libs
+	for i in "${with_mozilla_pkg}" libxul nspr {seamonkey,iceape,xulrunner,firefox,iceweasel,mozilla}-plugin; do
 	  echo "Trying to find $i.pc files" >&5
 	  if $PKG_CONFIG --exists --print-errors "$i" 2>&5
 	  then