diff options
| -rw-r--r-- | mesonbuild/backend/ninjabackend.py | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/mesonbuild/backend/ninjabackend.py b/mesonbuild/backend/ninjabackend.py index 462ea27fe..a2e7c2bf5 100644 --- a/mesonbuild/backend/ninjabackend.py +++ b/mesonbuild/backend/ninjabackend.py @@ -1103,8 +1103,16 @@ class NinjaBackend(backends.Backend): scaninfo = TargetDependencyScannerInfo( self.get_target_private_dir(target), source2object, scan_sources) - with open(pickle_abs, 'wb') as p: - pickle.dump(scaninfo, p) + + write = True + if os.path.exists(pickle_abs): + with open(pickle_abs, 'rb') as p: + old = pickle.load(p) + write = old != scaninfo + + if write: + with open(pickle_abs, 'wb') as p: + pickle.dump(scaninfo, p) elem = NinjaBuildElement(self.all_outputs, depscan_file, rule_name, pickle_file) # Add any generated outputs to the order deps of the scan target, so |