Bug 1181450 - Make GENERATED_FILES more visible during the build by printing their name when they are being generated. r=gps

python/mozbuild/mozbuild/backend/recursivemake.py

@@ -494,6 +494,7 @@ class RecursiveMakeBackend(CommonBackend):
             backend_file.write('GENERATED_FILES += %s\n' % obj.output)
             if obj.script:
                 backend_file.write("""{output}: {script}{inputs}
+\t$(REPORT_BUILD)
 \t$(call py_action,file_generate,{script} {method} {output}{inputs})
 
 """.format(output=obj.output,

python/mozbuild/mozbuild/test/backend/test_recursivemake.py

@@ -377,10 +377,12 @@ class TestRecursiveMakeBackend(BackendTester):
         expected = [
             'GENERATED_FILES += bar.c',
             'bar.c: %s/generate-bar.py' % env.topsrcdir,
+            '$(REPORT_BUILD)',
             '$(call py_action,file_generate,%s/generate-bar.py baz bar.c)' % env.topsrcdir,
             '',
             'GENERATED_FILES += foo.c',
             'foo.c: %s/generate-foo.py %s/foo-data' % (env.topsrcdir, env.topsrcdir),
+            '$(REPORT_BUILD)',
             '$(call py_action,file_generate,%s/generate-foo.py main foo.c %s/foo-data)' % (env.topsrcdir, env.topsrcdir),
             '',
             'GENERATED_FILES += quux.c',