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doc: decrease prominence of GOROOT_BOOTSTRAP

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Go build scripts on UNIX (make.bash, all.bash) have not required
GOROOT_BOOTSTRAP since August 2017 (CL 57753). Windows build scripts
have followed suit since CL 96455. Most people building Go will have
a Go toolchain in their PATH and will not need to specify a different
toolchain.

This CL removes the GOROOT_BOOTSTRAP mention from the contribution guide
(it was there for Windows only, but it's not required anymore). The guide
is meant to be light and clear for beginners and is not supposed to be
a reference, so there's not need to keep mentioning GOROOT_BOOTSTRAP.

Also update install-source.html to reflect the current status quo,
where using the PATH is probably the first and most used default, and
GOROOT_BOOTSTRAP is just an option.

Change-Id: Iab453e61b0c749c256aaaf81ea9b2ae58822cb89
Reviewed-on: https://go-review.googlesource.com/c/go/+/224717
Run-TryBot: Giovanni Bajo <rasky@develer.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
This commit is contained in:
Giovanni Bajo 2020-03-21 13:22:14 +01:00 committed by Rob Pike
parent 45f99d85e0
commit 2ba00e4754
2 changed files with 9 additions and 17 deletions
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4
doc/contribute.html
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@ -552,9 +552,7 @@ $ ./all.bash
</pre>
<p>
(To build under Windows use <code>all.bat</code>; this also requires
setting the environment variable <code>GOROOT_BOOTSTRAP</code> to the
directory holding the Go tree for the bootstrap compiler.)
(To build under Windows use <code>all.bat</code>)
</p>
<p>

22
doc/install-source.html
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@ -106,23 +106,17 @@ Go does not support CentOS 6 on these systems.
</div>
<h2 id="go14">Install Go compiler binaries</h2>
<h2 id="go14">Install Go compiler binaries for bootstrap</h2>
<p>
The Go toolchain is written in Go. To build it, you need a Go compiler installed.
The scripts that do the initial build of the tools look for an existing Go tool
chain in <code>$GOROOT_BOOTSTRAP</code>.
If unset, the default value of <code>GOROOT_BOOTSTRAP</code>
is <code>$HOME/go1.4</code>.
</p>
<p>
There are many options for the bootstrap toolchain.
After obtaining one, set <code>GOROOT_BOOTSTRAP</code> to the
directory containing the unpacked tree.
For example, <code>$GOROOT_BOOTSTRAP/bin/go</code> should be
the <code>go</code> command binary for the bootstrap toolchain.
</p>
The scripts that do the initial build of the tools look for a "go" command
in <code>$PATH</code>, so as long as you have Go installed in your
system and configured in your <code>$PATH</code>, you are ready to build Go
from source.
Or if you prefer you can set <code>$GOROOT_BOOTSTRAP</code> to the
root of a Go installation to use to build the new Go toolchain;
<code>$GOROOT_BOOTSTRAP/bin/go</code> should be the go command to use.</p>
<h3 id="bootstrapFromBinaryRelease">Bootstrap toolchain from binary release</h3>