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authorJustin Tobler <jltobler@gmail.com>2025-04-03 09:05:28 -0500
committerJunio C Hamano <gitster@pobox.com>2025-04-07 14:39:26 -0700
commit16fd6c85e4d036e789916e4d802b47a792fe496e (patch)
tree8e2a423df7f091b4c5508a388760474738c476d8 /Documentation/git-version.adoc
parent683c54c999c301c2cd6f715c411407c413b1d84e (diff)
downloadgit-16fd6c85e4d036e789916e4d802b47a792fe496e.tar.xz
help: include SHA implementation in version info
When the `--build-options` flag is used with git-version(1), additional information about the built version of Git is printed. During build time, different SHA implementations may be configured, but this information is not included in the version info. Add the SHA implementations Git is built with to the version info by requiring each backend to define a SHA1_BACKEND or SHA256_BACKEND symbol as appropriate and use the value in the printed build options. Signed-off-by: Justin Tobler <jltobler@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'Documentation/git-version.adoc')
-rw-r--r--Documentation/git-version.adoc6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/git-version.adoc b/Documentation/git-version.adoc
index 80fa7754a6..913ebf147d 100644
--- a/Documentation/git-version.adoc
+++ b/Documentation/git-version.adoc
@@ -22,6 +22,12 @@ OPTIONS
--build-options::
Include additional information about how git was built for diagnostic
purposes.
++
+The libraries used to implement the SHA-1 and SHA-256 algorithms are displayed
+in the form `SHA-1: <option>` and `SHA-256: <option>`. Note that the SHA-1
+options `SHA1_APPLE`, `SHA1_OPENSSL`, and `SHA1_BLK` do not use a collision
+detection algorithm and thus may be vulnerable to known SHA-1 collision
+attacks.
GIT
---