tree e6ba969f9d8f61d1dcf40cb7b67436b233a6cd0d
parent 57a245fe9655a454300b5b6a03938c6a566bcf38
author Jim Purbrick <jimp@fb.com> 1377876268 -0700
committer Michael Bolin <mbolin@fb.com> 1379628200 -0700

Track build file dependencies.

Summary:
Only invalidate affected cached build rules when:
1) the build file containing the rules is changed or removed
2) a file the build file transitively includes is changed or removed or
3) a file that could be in a glob in the build file is added or removed
This should greatly improve the performance of the buckd build file cache,
which currently invalidates the entire cache when anything changes.

Test Plan: ant && ant test