--- auto/lib/pcre/conf.orig	2012-03-28 01:44:52.000000000 +0900
+++ auto/lib/pcre/conf	2013-01-09 16:55:48.375745628 +0900
@@ -105,6 +105,17 @@
 
         if [ $ngx_found = no ]; then
 
+            # pkgconfig
+
+            ngx_feature="PCRE library in `pcre-config --prefix`/include"
+            ngx_feature_path="`pcre-config --prefix`/include"
+            ngx_feature_libs="`pcre-config --libs`"
+
+            . auto/feature
+        fi
+
+        if [ $ngx_found = no ]; then
+
             # FreeBSD port
 
             ngx_feature="PCRE library in /usr/local/"