commit | a82cdd58fd9ffa8c651f51de8d855f6baf708681 | [log] [tgz] |
---|---|---|
author | Blue Swirl <blauwirbel@gmail.com> | Sat Oct 02 14:28:12 2010 +0000 |
committer | Blue Swirl <blauwirbel@gmail.com> | Sat Oct 02 14:28:12 2010 +0000 |
tree | c07111dd003a2875da57d33246d350223868ac38 | |
parent | 904fe1fbd10388f384c9930fa2d8a25113b7e7aa [diff] |
trace: avoid unnecessary recompilation if nothing changed Add logic to detect changes in generated files. If the old and new files are identical, don't touch the generated file. This avoids a lot of churn since many files depend on trace.h. Based on suggestion by Paolo Bonzini. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>