Revision a82cdd58
| ID | a82cdd58fd9ffa8c651f51de8d855f6baf708681 |
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>
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