Refresh Ninja cache files on regeneration.

mesonbuild/backend/ninjabackend.py

@@ -567,6 +567,9 @@ class NinjaBackend(backends.Backend):
         # fully created.
         os.replace(tempfilename, outfilename)
         mlog.cmd_ci_include(outfilename)  # For CI debugging
+        # Refresh Ninja's caches. https://github.com/ninja-build/ninja/pull/1685
+        if mesonlib.version_compare(self.ninja_version, '>=1.10.2') and os.path.exists('.ninja_deps'):
+            subprocess.call(self.ninja_command + ['-t', 'restat'])
         self.generate_compdb()
 
     # http://clang.llvm.org/docs/JSONCompilationDatabase.html