3 ms·

I'd love some minor tweak of Make to compare/cache with hashes instead of mtime. A worse-is-better Bazel if you will.

• JonChesterfield 2y ago
  This might be worth building into the makefile interpreter. Doing it in the makefiles themselves is quite difficult to get right and very messy.
• alextingle 2y ago
  This is better achieved with the compiler level tooling, rather than in Make. It's pretty easy to replace `cc` with a short script that runs the pre-compiler and compares the result with a cache. If the source code is kept tight, it doesn't yield much of a speed-up, though - precompiling hundreds of unnecessary headers can take a lot of time. Better to put some effort into moving unnecessary #includes out of header files. In fact, you can use your log of cache-hits to guide that work.
• legobmw99 2y ago
  I also wish I could make certain variables/flags part of the dependencies of a file, like if I have something with a lot of #defines that I really want to rebuild any time CPPFLAGS changes