--- a/cmake/exiv2.pc.in	
+++ a/cmake/exiv2.pc.in	
@@ -1,7 +1,7 @@ 
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=${prefix}
-libdir=${prefix}/lib
-includedir=${prefix}/include
+libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
+includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
 
 Name: exiv2
 Description: @PROJECT_DESCRIPTION@