Jeffrey Holle <jeffreyholle@xxxxxxxxxxxxx> writes: > At which release did gcc environment variable usage change from > INCLUDE to C_INCLUDE_PATH and CPLUS_INCLUDE_PATH? Sounds like a trick question to me. gcc has used C_INCLUDE_PATH for a very long time. I happened to have the 2.0 sources handy, so I checked them, and they use CPATH and C_INCLUDE_PATH. They don't use INCLUDE. That is from 1992. Ian
