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doc: emphasize that environment variables are optional

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Also update $GOARM description.

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/4972041
This commit is contained in:
Russ Cox 2011-08-25 16:53:54 -04:00
parent 987649e09b
commit dd0b8e7975
1 changed files with 6 additions and 7 deletions
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13
doc/install.html
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@ -331,11 +331,11 @@ there is another mailing list, <a href="http://groups.google.com/group/golang-ch
that receives a message summarizing each checkin to the Go repository.
</p>
<h2 id="environment">Environment variables</h2>
<h2 id="environment">Optional environment variables</h2>
<p>
The Go compilation environment can be customized by environment variables.
None are required by the build, but you may wish to set them
<i>None are required by the build</i>, but you may wish to set them
to override the defaults.
</p>
@ -442,10 +442,9 @@ to override the defaults.
</dt>
<dd>
The ARM architecture version the run-time libraries should target.
ARMv6 cores have more efficient synchronization primitives. Setting
<code>$GOARM</code> to 5 will compile the run-time libraries using
just SWP instructions that work on older architectures as well.
Running v6 code on an older core will cause an illegal instruction trap.
Setting <code>$GOARM</code> to 5 causes the linker to emit calls
to a software floating point implementation instead of using
hardware floating point support.
</dd>
</dl>
@ -469,6 +468,6 @@ something like this:
<pre>
export GOROOT=$HOME/go
export GOARCH=386
export GOARCH=amd64
export GOOS=linux
</pre>