--- Makefile.in.orig	2012-05-03 11:34:09.000000000 +0900
+++ Makefile.in	2012-05-03 11:36:34.000000000 +0900
@@ -460,7 +460,7 @@
 MAINTAINERCLEANFILES = \
 	Makefile.in
 
-pkgconfigdir = $(libdir)/pkgconfig
+pkgconfigdir = $(prefix)/libdata/pkgconfig
 pkgconfig_DATA = \
 	libewf.pc