> Already slow compiles became unbearably slow. what is unbearably slow ? an hour ? a day ? how many times did you actually have to rebuild the entire code bas

> Already slow compiles became unbearably slow. what is unbearably slow ? an hour ? a day ? how many times did you actually have to rebuild the entire code base ? Did you do parallel builds, or see what gains you could get from faster hardware ? I'm genuinely curious as I've never worked on a codebase that large, and the only time you have to rebuild everything is when someone changes a common library header.