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Bryan C. Mills 4569fe6410 cmd/go: allow '-buildvcs=auto' and treat it as the default
When we added VCS stamping in the Go 1.18 release, we defaulted to
-buildvcs=true, on the theory that most folks will actually want VCS
information stamped.

We also made -buildvcs=true error out if a VCS directory is found and
no VCS tool is available, on the theory that a user who builds with
'-buildvcs=true' will be very surprised if the VCS metadata is
silently missing.

However, that causes a problem for CI environments that don't have the
appropriate VCS tool installed. (And we know that's a common situation
because we're in that situation ourselves — see #46693!)

The new '-buildvcs=auto' setting provides a middle ground: it stamps
VCS information by default when the tool is present (and reports
explicit errors if the tool errors out), but omits the metadata
when the tool isn't present at all.

Fixes #51748.
Updates #51999.

Change-Id: Iebc955c2af0abca9b7517f62ca48b1d944eb2df4
Reviewed-on: https://go-review.googlesource.com/c/go/+/398855
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
Auto-Submit: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-04-12 20:22:45 +00:00
.github .github: remove duplicate security link 2022-01-07 17:55:09 +00:00
api go/doc: use go/doc/comment 2022-04-11 16:31:52 +00:00
doc doc/go1.19: use the right package error.Is arguments 2022-04-07 20:39:32 +00:00
lib/time lib/time, time/tzdata: update to 2021e 2021-11-11 05:16:39 +00:00
misc all: gofmt main repo 2022-04-11 16:34:30 +00:00
src cmd/go: allow '-buildvcs=auto' and treat it as the default 2022-04-12 20:22:45 +00:00
test cmd/compile: always write fun[0] in incomplete itab 2022-04-12 17:06:19 +00:00
.gitattributes
.gitignore internal/buildcfg: move build configuration out of cmd/internal/objabi 2021-04-16 19:20:53 +00:00
AUTHORS A+C: add Wen Yang (individual CLA) 2022-04-11 22:24:03 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
CONTRIBUTING.md
CONTRIBUTORS A+C: add Wen Yang (individual CLA) 2022-04-11 22:24:03 +00:00
LICENSE
PATENTS
README.md README.md: update links to go.dev 2022-03-20 16:05:03 +00:00
SECURITY.md

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