2cfbdf460d
I'm working on removing the --ignore_dirty=$(OUT_DIR)/% argument from Kati. If we're always writing to a file that we're also reading, then with that flag removed, we'll always reparse all the makefiles. So instead, use the method from the generated java file cleanup where we read from a "previous" file, write to a "current" file, then use a cmp || mv to overwrite the "previous" file if necessary. When the flag is removed, this will cause Kati to need to run twice any time this changes, but it's better than forever. Bug: 30947985 Test: Switch between aosp_arm-eng and full-eng Change-Id: Id2d1445809b60ce26700bb2aca765df3b5c2b360