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doc/go1.18: add release notes for build and VCS info

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Fixes #37475
For #39301

Change-Id: I765bc667004931ff8973b947f2e95624a4a0375d
Reviewed-on: https://go-review.googlesource.com/c/go/+/356013
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Trust: Jay Conrod <jayconrod@google.com>
This commit is contained in:
Jay Conrod 2021-10-14 15:40:44 -07:00
parent a17b2e8655
commit 85cbdda5a6
1 changed files with 37 additions and 0 deletions
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@ -65,6 +65,30 @@ Do not send CLs removing the interior tags from such phrases.
and installs packages, as before.
</p>
<p><!-- golang.org/issue/37475 -->
The <code>go</code> command now embeds version control information in
binaries including the currently checked-out revision and a flag indicating
whether edited or untracked files are present. Version control information
is embedded if the <code>go</code> command is invoked in a directory within a
Git or Mercurial repository, and the <code>main</code> package and its
containing main module are in the same repository. This information may be
omitted using the flag <code>-buildvcs=false</code>.
</p>
<p><!-- golang.org/issue/37475 -->
Additionally, the <code>go</code> command embeds information about the build
including build and tool tags (set with <code>-tags</code>), compiler,
assembler, and linker flags (like <code>-gcflags</code>), whether cgo was
enabled, and if it was, the values of the cgo environment variables
(like <code>CGO_CFLAGS</code>). This information may be omitted using the
flag <code>-buildinfo=false</code>. Both VCS and build information may be
read together with module information using <code>go</code>
<code>version</code> <code>-m</code> <code>file</code> or
<code>runtime/debug.ReadBuildInfo</code> (for the currently running binary)
or the new <a href="#debug/buildinfo"><code>debug/buildinfo</code></a>
package.
</p>
<p>
TODO: complete this section, or delete if not needed
</p>
@ -114,6 +138,19 @@ Do not send CLs removing the interior tags from such phrases.
TODO: complete this section
</p>
<dl id="debug/buildinfo"><dt><a href="/pkg/debug/buildinfo">debug/buildinfo</a></dt>
<dd>
<p><!-- golang.org/issue/39301 -->
This new package provides access to module versions, version control
information, and build flags embedded in executable files built by
the <code>go</code> command. The same information is also available via
<a href="/pkg/runtime/debug#ReadBuildInfo"><code>runtime/debug.ReadBuildInfo</code></a>
for the currently running binary and via <code>go</code>
<code>version</code> <code>-m</code> on the command line.
</p>
</dd>
</dl>
<dl id="image/draw"><dt><a href="/pkg/image/draw/">image/draw</a></dt>
<dd>
<p><!-- CL 340049 -->