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29 lines
898 B
Python
29 lines
898 B
Python
#! /usr/bin/env python
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# encoding: utf-8
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# Thomas Nagy, 2015
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"""
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Force files to depend on the timestamps of those located in the build directory. You may
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want to use this to force partial rebuilds, see playground/track_output_files/ for a working example.
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Note that there is a variety of ways to implement this, one may want use timestamps on source files too for example,
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or one may want to hash the files in the source directory only under certain conditions (md5_tstamp tool)
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or to hash the file in the build directory with its timestamp
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"""
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import os
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from waflib import Node, Utils
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def get_bld_sig(self):
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if not self.is_bld() or self.ctx.bldnode is self.ctx.srcnode:
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return Utils.h_file(self.abspath())
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try:
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# add the creation time to the signature
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return self.sig + str(os.stat(self.abspath()).st_mtime)
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except AttributeError:
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return None
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Node.Node.get_bld_sig = get_bld_sig
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