--- Makefile.in.orig	2010-11-24 21:34:43.000000000 +0900
+++ Makefile.in	2010-11-28 22:37:10.799791656 +0900
@@ -276,7 +276,7 @@
 SUBDIRS = include lib plugins src examples test apt rpm yum data resource doc
 #dist_data_DATA =
 EXTRA_DIST = bindings version-gen.sh
-pkgconfigdir = $(libdir)/pkgconfig
+pkgconfigdir = $(prefix)/libdata/pkgconfig
 pkgconfig_DATA = groonga.pc
 all: config.h
 	$(MAKE) $(AM_MAKEFLAGS) all-recursive