+SET(RUBY_PATH "non")
+find_program(FIND_EXE NAMES find)
+exec_program("${FIND_EXE} /usr/lib -name ruby.h" OUTPUT_VARIABLE RUBY_PATH)
+string(REPLACE "/ruby.h" "" RUBY_PATH ${RUBY_PATH})
+message("RUBY_PATH ${RUBY_PATH}")
+CHECK_INCLUDE_FILE(${RUBY_PATH}/ruby.h HAVE_RUBY_H)
+
+if(HAVE_RUBY_H AND NOT disable_ruby)
+ add_definitions("-I${RUBY_PATH} -I${PROJECT_DIRECTORY}/src/bindings/ruby -I${PROJECT_DIRECTORY}/src/simix")
+endif(HAVE_RUBY_H AND NOT disable_ruby)