diff -aur --no-dereference package.pristine/src/bindings/CMakeLists.txt package.new/src/bindings/CMakeLists.txt
--- package.pristine/src/bindings/CMakeLists.txt	2017-08-22 18:50:42.000000000 +0200
+++ package.new/src/bindings/CMakeLists.txt	2018-02-06 00:15:44.876654183 +0100
@@ -150,7 +150,7 @@
 
 	endif(NOT WIN32)
 
-	include_directories(${YAF_INCLUDE_DIRS} ${RUBY_INCLUDE_DIR})
+	include_directories(${YAF_INCLUDE_DIRS} ${RUBY_INCLUDE_DIR} ${RUBY_ARCHHDR_DIR})
 	include(${SWIG_USE_FILE})
 
 	set(CMAKE_SWIG_FLAGS -c++ -w-801)