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Document how to build gccgo to use gold.

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This provides full support for discontiguous stacks.

R=r
CC=golang-dev
https://golang.org/cl/183088
This commit is contained in:
Ian Lance Taylor 2009-12-29 14:59:08 -08:00
parent c7bd61a216
commit 1d5e1f578c
1 changed files with 31 additions and 5 deletions
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doc/gccgo_install.html
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@ -43,21 +43,47 @@ using the <code>configure</code> option <code>--with-arch=i586</code>
run).
</p>
<p>
On x86 GNU/Linux systems the <code>gccgo</code> compiler is able to
use a small discontiguous stack for goroutines. This permits programs
to run many more goroutines, since each goroutine can use a relatively
small stack. Doing this requires using a development version of
the <code>gold</code> linker. The easiest way to do this is to build
the GNU binutils, using <code>--enable-gold</code> when you run
the <code>configure</code> script, and to
use <code>--with-ld=GOLD_BINARY</code> when you
configure <code>gccgo</code>. A typical sequence would look like
this (you can replace <code>/opt/gold</code> with any directory to
which you have write access):
</p>
<pre>
cvs -z 9 -d :pserver:anoncvs@sourceware.org:/cvs/src login
[password is "anoncvs"]
cvs -z 9 -d :pserver:anoncvs@sourceware.org:/cvs/src co binutils
mkdir binutils-objdir
cd binutils-objdir
../src/configure --enable-gold --prefix=/opt/gold
make
make install
</pre>
<p>
A number of prerequisites are required to build <code>gcc</code>, as
described on the <code>gcc</code> web site. If those are all
available, then a typical build and install sequence would look like
this:
described on the <a href="http://gcc.gnu.org/">gcc web site</a>. If
those are all available, then a typical build and install sequence
would look like this (only use the <code>--with-ld</code> option if
you built and installed the gold linker as described above):
</p>
<pre>
svn checkout svn://gcc.gnu.org/svn/gcc/branches/gccgo gccgo
mkdir objdir
cd objdir
../gccgo/configure --enable-languages=c,c++,go
../gccgo/configure --enable-languages=c,c++,go --with-ld=/opt/gold/bin/ld
make
make install
</pre>
</p>
<h2 id="Using_gccgo">Using gccgo</h2>