diff options
Diffstat (limited to 'third_party/waf/waflib/extras/build_file_tracker.py')
-rw-r--r-- | third_party/waf/waflib/extras/build_file_tracker.py | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/third_party/waf/waflib/extras/build_file_tracker.py b/third_party/waf/waflib/extras/build_file_tracker.py new file mode 100644 index 00000000000..a00f7b2ad80 --- /dev/null +++ b/third_party/waf/waflib/extras/build_file_tracker.py @@ -0,0 +1,31 @@ +#! /usr/bin/env python +# encoding: utf-8 +# Thomas Nagy, 2015 + +""" +Force files to depend on the timestamps of those located in the build directory. You may +want to use this to force partial rebuilds, see playground/track_output_files/ for a working example. + +Note that there is a variety of ways to implement this, one may want use timestamps on source files too for example, +or one may want to hash the files in the source directory only under certain conditions (md5_tstamp tool) +or to hash the file in the build directory with its timestamp (similar to 'update_outputs') +""" + +import os +from waflib import Node, Utils + +def get_bld_sig(self): + try: + return self.cache_sig + except AttributeError: + pass + + if not self.is_bld() or self.ctx.bldnode is self.ctx.srcnode: + self.sig = Utils.h_file(self.abspath()) + self.cache_sig = ret = self.sig + else: + # add the + self.cache_sig = ret = self.sig + str(os.stat(self.abspath()).st_mtime) + return ret + +Node.Node.get_bld_sig = get_bld_sig |