tree e56630542064e75e205e85bd97dfd4f6fc693bcd
parent a127dda3ee92916ef459b3da7aa9f2920ff1a5ab
author Colin Cross <ccross@android.com> 1495154091 -0700
committer Colin Cross <ccross@android.com> 1495477746 -0700

Always rebuild on errors

https://groups.google.com/forum/#!msg/ninja-build/YQuGNrECI-4/ti-lAs9SPv8J
discusses a case where an rule updates its output file and then
fails.  The next run of ninja considers the ouptut file clean
and doesn't rebuild it.  Always stat output files after they are
built, and write the mtime into .ninja_log.  Consider output files
dirty if the recorded mtime is older than the most recent input
file.