1#!/usr/bin/env python 2 3# Copyright (c) 2012 Google Inc. All rights reserved. 4# Use of this source code is governed by a BSD-style license that can be 5# found in the LICENSE file. 6 7""" 8Verify that relinking a solib doesn't relink a dependent executable if the 9solib's public API hasn't changed. 10""" 11 12import os 13import sys 14import TestCommon 15import TestGyp 16 17# NOTE(fischman): This test will not work with other generators because the 18# API-hash-based-mtime-preservation optimization is only implemented in 19# ninja.py. It could be extended to the make.py generator as well pretty 20# easily, probably. 21# (also, it tests ninja-specific out paths, which would have to be generalized 22# if this was extended to other generators). 23test = TestGyp.TestGyp(formats=['ninja']) 24 25test.run_gyp('solibs_avoid_relinking.gyp') 26 27# Build the executable, grab its timestamp, touch the solib's source, rebuild 28# executable, ensure timestamp hasn't changed. 29test.build('solibs_avoid_relinking.gyp', 'b') 30test.built_file_must_exist('b' + TestCommon.exe_suffix) 31pre_stat = os.stat(test.built_file_path('b' + TestCommon.exe_suffix)) 32os.utime(os.path.join(test.workdir, 'solib.cc'), 33 (pre_stat.st_atime, pre_stat.st_mtime + 100)) 34test.sleep() 35test.build('solibs_avoid_relinking.gyp', 'b') 36post_stat = os.stat(test.built_file_path('b' + TestCommon.exe_suffix)) 37 38if pre_stat.st_mtime != post_stat.st_mtime: 39 test.fail_test() 40else: 41 test.pass_test() 42