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[master]: Redo the handling of changed ar behaviour
Also added a NEWS file, since there is a change in the behaviour of ar, and thus make. Signed-off-by: Manoj Srivastava <srivasta@debian.org>
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debian/NEWS.Debian
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make-dfsg (4.1-2) unstable; urgency=low
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WARNING: Backward-incompatibility!
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The ar program in the binutils package in Debian is now configured
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with --enable-deterministic-archives. This change makes the archives
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reproducible, by setting the UID, GID, and timestamp to 0. However,
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when dealing with archives created with the libxx(*.o) style rules,
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make needs the timestamp of the file in order to decide to update it
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or not. With the current deterministic behavior of ar, the time stamp
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is always 0. This has consequences, since make will fall back to always
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adding each member to the archive, whether or not it is required. This
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is a change in behaviour, and, for instance, it makes make fail to
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build, failing 7 out of 10 archive tests.
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.
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Since binutils will create archive with time stamps set to 0 when
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running in "deterministic" mode, make will always try to update such
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members. When this is detected, make will emit a warning.
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.
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There is some online discussion:
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https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=798804
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https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=798913
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https://bugzilla.redhat.com/show_bug.cgi?id=1195883
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-- Manoj Srivastava <srivasta@debian.org> Mon, 18 Jan 2016 16:09:19 -0800
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make-dfsg (4.0-1) experimental; urgency=low
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make-dfsg (4.0-1) experimental; urgency=low
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WARNING: Backward-incompatibility!
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WARNING: Backward-incompatibility!
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debian/changelog
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make-dfsg (4.1-2) unstable; urgency=low
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* Update the handling of the changed behaviour of ar. The fix in the
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previous version has been rolled back. The new strategy is to narrowly
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change running the test suite to pass in the U modifier to ar, and
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change make to detect and warn the user of they are using the archive
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rule like libxx(*.o) to generate archives, and the archives do not
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contain time stamps. The warning advises the user to explicitly pass
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in the modifier U in the environment variable ARFLAGS, which is
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essentially what we did for the test suite.
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-- Manoj Srivastava <srivasta@debian.org> Mon, 18 Jan 2016 15:57:45 -0800
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make-dfsg (4.1-1) unstable; urgency=low
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make-dfsg (4.1-1) unstable; urgency=low
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* New upstream release
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* New upstream release
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