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dc1cf3580e
Address the root cause of technical debt we've been carrying since sha1collisiondetection was made the default in [1]. In a preceding commit we narrowly fixed a bug where the "DC_SHA1" variable would be unset (in combination with "NO_APPLE_COMMON_CRYPTO=" on OSX), even though we had the sha1collisiondetection library enabled. But the only reason we needed to have such a user-exposed knob went away with [1], and it's been doing nothing useful since then. We don't care if you define DC_SHA1=*, we only care that you don't ask for any other SHA-1 implementation. If it turns out that you didn't, we'll use sha1collisiondetection, whether you had "DC_SHA1" set or not. As a result of this being confusing we had e.g. [2] for cmake and the recent [3] for ci/lib.sh setting "DC_SHA1" explicitly, even though this was always a NOOP. A much simpler way to do this is to stop having the Makefile and CMakeLists.txt set "DC_SHA1" to be picked up by the test-lib.sh, let's instead add a trivial "test-tool sha1-is-sha1dc". It returns zero if we're using sha1collisiondetection, non-zero otherwise. 1.e6b07da278(Makefile: make DC_SHA1 the default, 2017-03-17) 2.c4b2f41b5f(cmake: support for testing git with ctest, 2020-06-26) 3.1ad5c3df35(ci: use DC_SHA1=YesPlease on osx-clang job for CI, 2022-10-20) Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Taylor Blau <me@ttaylorr.com>
16 lines
263 B
C
16 lines
263 B
C
#include "test-tool.h"
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#include "cache.h"
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int cmd__sha1(int ac, const char **av)
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{
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return cmd_hash_impl(ac, av, GIT_HASH_SHA1);
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}
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int cmd__sha1_is_sha1dc(int argc UNUSED, const char **argv UNUSED)
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{
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#ifdef platform_SHA_IS_SHA1DC
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return 0;
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#endif
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return 1;
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}
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