--- cmake-2.8.12.2/Modules/FindRuby.cmake~	2014-08-26 22:03:46.000000000 +0200
+++ cmake-2.8.12.2/Modules/FindRuby.cmake	2014-08-26 22:05:53.115892137 +0200
@@ -170,6 +170,7 @@
    find_path(RUBY_CONFIG_INCLUDE_DIR
      NAMES ruby/config.h  config.h
      HINTS
+     ${RUBY_HDR_DIR}
      ${RUBY_HDR_DIR}/${RUBY_ARCH}
      ${RUBY_ARCH_DIR}
      )