--- Makefile.in.orig	2010-03-02 10:20:09.000000000 -0300
+++ Makefile.in	2010-03-05 21:39:05.000000000 -0300
@@ -1399,7 +1399,7 @@
 	include/boost/version.hpp \
 	include/boost/visit_each.hpp
 
-pkgconfigdir = $(libdir)/pkgconfig
+pkgconfigdir = $(exec_prefix)/libdata/pkgconfig
 pkgconfig_DATA = Coin.pc
 BUILT_SOURCES = \
 	include/Inventor/C/basic.h \