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Makefile: under "make dist", include the sha1collisiondetection submodule 

Include the sha1collisiondetection submodule when running "make
dist". Even though we've been shipping the sha1collisiondetection
submodule[1] and using it by default if it's checked out[2] anyone
downloading git as a tarball would just get an empty
sha1collisiondetection/ directory.

Doing this automatically is a feature that's missing from git-archive,
but in the meantime let's bundle this up into the tarball we
ship. This ensures that the DC_SHA1_SUBMODULE flag does what's
intended even in an unpacked tarball, and more importantly means we're
building the exact same code from the same paths from git.git and from
the tarball.

I am not including all the files in the submodule, only the ones git
actually needs (and the licenses), only including some files like this
would be a useful feature if git-archive ever adds the ability to
bundle up submodules.

1. commit 86cfd61e6b ("sha1dc: optionally use sha1collisiondetection
   as a submodule", 2017-07-01)
2. cac87dc01d ("sha1collisiondetection: automatically enable when
   submodule is populated", 2017-07-01)

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Ævar Arnfjörð Bjarmason 2017-12-08 22:29:58 +00:00 committed by Junio C Hamano
parent f39e05f225
commit bc2ed316e4
1 changed files with 15 additions and 0 deletions
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Makefile
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@ -2642,6 +2642,21 @@ dist: git-archive$(X) configure
$(GIT_TARNAME)/configure \
$(GIT_TARNAME)/version \
$(GIT_TARNAME)/git-gui/version
ifdef DC_SHA1_SUBMODULE
@mkdir -p $(GIT_TARNAME)/sha1collisiondetection/lib
@cp sha1collisiondetection/LICENSE.txt \
$(GIT_TARNAME)/sha1collisiondetection/
@cp sha1collisiondetection/LICENSE.txt \
$(GIT_TARNAME)/sha1collisiondetection/
@cp sha1collisiondetection/lib/sha1.[ch] \
$(GIT_TARNAME)/sha1collisiondetection/lib/
@cp sha1collisiondetection/lib/ubc_check.[ch] \
$(GIT_TARNAME)/sha1collisiondetection/lib/
$(TAR) rf $(GIT_TARNAME).tar \
$(GIT_TARNAME)/sha1collisiondetection/LICENSE.txt \
$(GIT_TARNAME)/sha1collisiondetection/lib/sha1.[ch] \
$(GIT_TARNAME)/sha1collisiondetection/lib/ubc_check.[ch]
endif
@$(RM) -r $(GIT_TARNAME)
gzip -f -9 $(GIT_TARNAME).tar