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Merge branch 'jt/help-sha-backend-info-in-build-options' into jch 

"git help --build-options" reports SHA-1 and SHA-256 backends used
in the build.

* jt/help-sha-backend-info-in-build-options:
  help: include unsafe SHA-1 build info in version
  help: include SHA implementation in version info
Junio C Hamano 2025-04-01 21:33:14 +09:00
parent 7c25ea7956 84fcb4bddd
commit 5226c7633d
2 changed files with 39 additions and 0 deletions

3
Documentation/git-version.adoc
View File

@ -22,6 +22,9 @@ OPTIONS
--build-options::
Include additional information about how git was built for diagnostic
purposes.
+
If built to use a faster SHA-1 implementation for non-cryptographic purposes,
the implmentation used is denoted as "unsafe-SHA-1".
GIT
---

36
help.c
View File

@ -768,6 +768,41 @@ char *help_unknown_cmd(const char *cmd)
exit(1);
}
static void get_sha_impl(struct strbuf *buf)
{
#if defined(SHA1_OPENSSL)
strbuf_addstr(buf, "SHA-1: OpenSSL\n");
#elif defined(SHA1_BLK)
strbuf_addstr(buf, "SHA-1: blk\n");
#elif defined(SHA1_APPLE)
strbuf_addstr(buf, "SHA-1: Apple CommonCrypto\n");
#elif defined(DC_SHA1_EXTERNAL)
strbuf_addstr(buf, "SHA-1: Collision Detection (External)\n");
#elif defined(DC_SHA1_SUBMODULE)
strbuf_addstr(buf, "SHA-1: Collision Detection (Submodule)\n");
#elif defined(SHA1_DC)
strbuf_addstr(buf, "SHA-1: Collision Detection\n");
#endif
#if defined(SHA1_OPENSSL_UNSAFE)
strbuf_addstr(buf, "unsafe-SHA-1: OpenSSL\n");
#elif defined(SHA1_BLK_UNSAFE)
strbuf_addstr(buf, "unsafe-SHA-1: blk\n");
#elif defined(SHA1_APPLE_UNSAFE)
strbuf_addstr(buf, "unsafe-SHA-1: Apple CommonCrypto\n");
#endif
#if defined(SHA256_OPENSSL)
strbuf_addstr(buf, "SHA-256: OpenSSL\n");
#elif defined(SHA256_NETTLE)
strbuf_addstr(buf, "SHA-256: Nettle\n");
#elif defined(SHA256_GCRYPT)
strbuf_addstr(buf, "SHA-256: gcrypt\n");
#elif defined(SHA256_BLK)
strbuf_addstr(buf, "SHA-256: blk\n");
#endif
}
void get_version_info(struct strbuf *buf, int show_build_options)
{
/*
@ -803,6 +838,7 @@ void get_version_info(struct strbuf *buf, int show_build_options)
#elif defined ZLIB_VERSION
strbuf_addf(buf, "zlib: %s\n", ZLIB_VERSION);
#endif
get_sha_impl(buf);
}
}