diff --git a/wscript b/wscript
index 8aaea63..683419c 100644
--- a/wscript
+++ b/wscript
@@ -24,10 +24,8 @@
                'boost', 'default-compiler-flags', 'doxygen', 'sphinx_build',
                'sqlite3', 'pch', 'coverage'])
 
-    if not os.environ.has_key('PKG_CONFIG_PATH'):
-        os.environ['PKG_CONFIG_PATH'] = ':'.join([
-            '/usr/local/lib/pkgconfig',
-            '/opt/local/lib/pkgconfig'])
+    if 'PKG_CONFIG_PATH' not in os.environ:
+        os.environ['PKG_CONFIG_PATH'] = Utils.subst_vars('${LIBDIR}/pkgconfig', conf.env)
 
     conf.check_cfg(package='liblog4cxx', args=['--cflags', '--libs'],
                   uselib_store='LOG4CXX', mandatory=True)