http://bugs.gentoo.org/show_bug.cgi?id=465882

--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -34,7 +34,7 @@
   FIND_PACKAGE( ZLIB REQUIRED )
 ENDIF( WITH_ZLIB )
 
-INCLUDE_DIRECTORIES( ${GLIB2_INCLUDE_DIR} ${LIBGSF_INCLUDE_DIR} ${ICONV_INCLUDE_DIR} ${ZLIB_INCLUDE_DIR} )
+INCLUDE_DIRECTORIES( ${GLIB2_INCLUDE_DIR} ${LIBGSF_INCLUDE_DIR} ${PC_LIBGSF_INCLUDE_DIRS} ${ICONV_INCLUDE_DIR} ${ZLIB_INCLUDE_DIR} )
 
 #
 # Iconv checks