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End of Issue 1450

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Thomas Nagy 2014-05-24 09:01:31 +02:00
parent 4161ce4827
commit 3f484f4446
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1 changed files with 11 additions and 0 deletions
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11
waflib/extras/pch.py
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@ -51,6 +51,7 @@ To use this tool, wscript should look like:
Note that precompiled header must have multiple inclusion guards. If the guards are missing, any benefit of precompiled header will be voided and compilation may fail in some cases.
"""
import os
from waflib import Task, TaskGen, Logs, Utils
from waflib.Tools import c_preproc, cxx
@ -132,3 +133,13 @@ class gchx(Task.Task):
scan = c_preproc.scan
color = 'BLUE'
ext_out=['.h']
def runnable_status(self):
ret = Task.Task.runnable_status(self)
if ret == Task.SKIP_ME and self.env.CXX_NAME == 'clang':
t = os.stat(self.outputs[0].abspath()).st_mtime
for n in self.inputs:
if os.stat(n.abspath()).st_mtime > t:
return Task.RUN_ME
return ret