Commit b9905581 authored by Brad Fitzpatrick's avatar Brad Fitzpatrick

doc: reference go1.4-bootstrap-20161024.tar.gz

Updates #16352

Change-Id: I214c87579ef21ced8d0ba94aa170dd7780afec4b
Reviewed-on: https://go-review.googlesource.com/32312Reviewed-by: default avatarIan Lance Taylor <iant@golang.org>
parent f58ce7fe
......@@ -115,27 +115,39 @@ Go does not support CentOS 6 on these systems.
<p>
The Go tool chain 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>$HOME/go1.4</code>.
(This path may be overridden by setting the <code>GOROOT_BOOTSTRAP</code>
environment variable.)
chain in <code>$GOROOT_BOOTSTRAP</code>.
If unset, the default value of <code>GOROOT_BOOTSTRAP</code>
is <code>$HOME/go1.4</code>.
</p>
<p>
Build the tools with Go version 1.4 or a point release (1.4.1, 1.4.2 etc.).
Go 1.4 binaries can be found at <a href="/dl/">the downloads page</a>.
There are many options for the bootstrap tool chain.
After obtaining one, set <code>GOROOT_BOOTSTRAP</code> to the
directory containing the unpacked tree.
For example, <code>$GOROOT_BOOTSTRAP/bin/go</code> should be
the <code>go</code> command binary for the bootstrap tool chain.
</p>
<p>
Download the zip or tarball of Go 1.4 for your platform and extract it to
<code>$HOME/go1.4</code> (or your nominated <code>GOROOT_BOOTSTRAP</code>
location).
To use a binary release as a bootstrap tool chain, see
<a href="/dl/">the downloads page</a> or use any other
packaged Go distribution.
</p>
<p>
If you want to install Go 1.5 on a system that is not supported by Go 1.4 (such
as <code>linux/ppc64</code> and <code>linux/mips64le</code>) you can either use
<a href="/src/bootstrap.bash">bootstrap.bash</a> on a system that can bootstrap Go
1.5 normally, or bootstrap with gccgo 5.
To build a bootstrap tool chain from source, use
either the git branch <code>release-branch.go1.4</code> or
<a href="https://storage.googleapis.com/golang/go1.4-bootstrap-20161024.tar.gz">go1.4-bootstrap-20161024.tar.gz</a>,
which contains the Go 1.4 source code plus accumulated fixes
to keep the tools running on newer operating systems.
(Go 1.4 was the last distribution in which the tool chain was written in C.)
</p>
<p>
To cross-compile a bootstrap tool chain from source, which is
necessary on systems Go 1.4 did not target (for
example, <code>linux/ppc64le</code>), install Go on a different system
and run <a href="/src/bootstrap.bash">bootstrap.bash</a>.
</p>
<p>
......@@ -154,8 +166,9 @@ and used as <code>GOROOT_BOOTSTRAP</code> to bootstrap a local build.
</p>
<p>
To use gccgo, you need to arrange for <code>$GOROOT_BOOTSTRAP/bin/go</code> to be
the go tool that comes as part of gccgo 5. For example on Ubuntu Vivid:
To use gccgo as the bootstrap toolchain, you need to arrange
for <code>$GOROOT_BOOTSTRAP/bin/go</code> to be the go tool that comes
as part of gccgo 5. For example on Ubuntu Vivid:
</p>
<pre>
......
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