From: "Iñaki Baz Castillo" Date: 2012-05-07T07:58:19+09:00 Subject: [C exten] mkmf: how to include .c and .h files within a subdirectory? Hi, having the following file tree under my ext/ directory: my_ext/ extconf.rb my_ext.c utils/ utils.c utils.h How to say in extconf.rb that files under utils/ subdirectory must also be compiled? Thanks a lot. -- Iñaki Baz Castillo