[PATCH v2 0/2] help: include SHA build options in version info

Greetings,

Additional information regarding how Git was built can be found via the `--build-options` flag for git-version(1). This currently does not include information about the SHA-1 and SHA-256 implementations Git is built with.

This short series adds build option info for the SHA-1, SHA-256, and non-crypto-SHA-1 (if any) implementations which may be useful for diagnostic purposes

Changes since V1:

        - Each SHA backend is expected to define either `SHA1_BACKEND`,
          `SHA1_UNSAFE_BACKEND`, or `SHA256_BACKEND` as appropriate.
          These symbols are then used to print the SHA build options in
          the additional version info.

        - The names of the build options are used instead of
          human-readable names.

        - Appended "(No collision detection)" to warn about SHA1
          backends without collision detection.

        - Renamed "unsafe-SHA-1" to "non-crypto-SHA-1" in the printed
          build options.

        - Small updates to documentation.

Thanks, -Justin

Justin Tobler (2):
  help: include SHA implementation in version info
  help: include unsafe SHA-1 build info in version

 Documentation/git-version.adoc |  6 ++++++
 hash.h                         | 11 +++++++++++
 help.c                         | 13 +++++++++++++
 3 files changed, 30 insertions(+)

base-commit: 683c54c999c301c2cd6f715c411407c413b1d84e