Index: lib2geom-1.2.2/2geom.pc.in
===================================================================
--- lib2geom-1.2.2.orig/2geom.pc.in
+++ lib2geom-1.2.2/2geom.pc.in
@@ -1,6 +1,6 @@
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=${prefix}
-libdir=${exec_prefix}/lib
+libdir=%{prefix}/@CMAKE_INSTALL_LIBDIR@
 includedir=${prefix}/include
 
 Name: 2geom