diff options
authorJohannes Schindelin <>2017-12-14 23:34:38 (GMT)
committerJunio C Hamano <>2017-12-15 06:53:04 (GMT)
commited32b788c06973ef28440ef81fdde9e7e55667f1 (patch)
parentb22894049ffed57eb150ad156796e3eda86259c9 (diff)
version --build-options: report commit, too, if possible
In particular when local tags are used (or tags that are pushed to some fork) to build Git, it is very hard to figure out from which particular revision a particular Git executable was built. It gets worse when those tags are deleted, or even updated. Let's just report an exact, unabbreviated commit name in our build options. We need to be careful, though, to report when the current commit cannot be determined, e.g. when building from a tarball without any associated Git repository. This could be the case also when extracting Git's source code into an unrelated Git worktree. Signed-off-by: Johannes Schindelin <> Signed-off-by: Junio C Hamano <>
4 files changed, 10 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 5587bcc..2ce70d2 100644
--- a/Makefile
+++ b/Makefile
@@ -1902,7 +1902,9 @@ builtin/help.sp builtin/help.s builtin/help.o: EXTRA_CPPFLAGS = \
version.sp version.s version.o: GIT-VERSION-FILE GIT-USER-AGENT
version.sp version.s version.o: EXTRA_CPPFLAGS = \
+ git rev-parse -q --verify HEAD || :)"'
$(BUILT_INS): git$X
$(QUIET_BUILT_IN)$(RM) $@ && \
diff --git a/help.c b/help.c
index cbcb159..60071a9 100644
--- a/help.c
+++ b/help.c
@@ -413,6 +413,11 @@ int cmd_version(int argc, const char **argv, const char *prefix)
if (build_options) {
printf("cpu: %s\n", GIT_HOST_CPU);
+ if (git_built_from_commit_string[0])
+ printf("built from commit: %s\n",
+ git_built_from_commit_string);
+ else
+ printf("no commit associated with this build\n");
printf("sizeof-long: %d\n", (int)sizeof(long));
/* NEEDSWORK: also save and output GIT-BUILD_OPTIONS? */
diff --git a/version.c b/version.c
index 6106a80..41b718c 100644
--- a/version.c
+++ b/version.c
@@ -3,6 +3,7 @@
#include "strbuf.h"
const char git_version_string[] = GIT_VERSION;
+const char git_built_from_commit_string[] = GIT_BUILT_FROM_COMMIT;
const char *git_user_agent(void)
diff --git a/version.h b/version.h
index 6911a4f..7c62e80 100644
--- a/version.h
+++ b/version.h
@@ -2,6 +2,7 @@
#define VERSION_H
extern const char git_version_string[];
+extern const char git_built_from_commit_string[];
const char *git_user_agent(void);
const char *git_user_agent_sanitized(void);