--- CMakeLists.txt.pkgconfig 2012-02-03 17:01:51.000000000 +0100 +++ CMakeLists.txt 2012-02-03 17:01:59.000000000 +0100 @@ -214,7 +214,7 @@ if(NOT WIN32 OR CYGWIN OR MINGW) set(prefix ${CMAKE_INSTALL_PREFIX}) set(exec_prefix ${CMAKE_INSTALL_PREFIX}) - set(libdir ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}) + set(libdir ${CMAKE_INSTALL_LIBDIR}) set(includedir ${CMAKE_INSTALL_PREFIX}/include) set(LIBS "-lz -lm") configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng.pc.in