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8e72b6e44d
One of the first actions an invoked Makefile now does is check to see if *any* moz.build file or Makefile.in is out of date. If so, config.status is executed to rebuild the build backend. Since we always perform this check as part of a build, we no longer need special handling for out of date moz.build files during traversals. This results in the removal of a significant amount of code! Another upside of the change is that if a moz.build file is modified during building, we don't (potentially) modify the build backend from under the in-progress build. Thus the only race condition that remains is if a moz.build is mutated during moz.build reading. This window (a few seconds) is significantly shorter than the time of a full build (minutes). This patch should also enable us to remove empty Makefile.in files without requiring a clobber.
24 lines
1012 B
Plaintext
24 lines
1012 B
Plaintext
# To Trigger a clobber replace ALL of the textual description below,
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# giving a bug number and a one line description of why a clobber is
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# required. Modifying this file will make configure check that a
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# clobber has been performed before the build can continue.
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#
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# MERGE NOTE: When merging two branches that require a CLOBBER, you should
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# merge both CLOBBER descriptions, to ensure that users on
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# both branches correctly see the clobber warning.
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#
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# O <-- Users coming from both parents need to Clobber
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# / \
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# O O
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# | |
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# O <-- Clobber O <-- Clobber
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#
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# Note: The description below will be part of the error message shown to users.
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#
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# Modifying this file will now automatically clobber the buildbot machines \o/
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#
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Bug 848530 - Added a dependency file for moz.build traversal.
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Alternative to clobber is to run ./config.status from the objdir and to
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touch the CLOBBER file in the objdir.
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