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Expand section on building gccgo.

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http://go/go-review/1026008
This commit is contained in:
Ian Lance Taylor 2009-11-06 14:16:47 -08:00
parent 2528f33535
commit 8c40900fc2
1 changed files with 25 additions and 4 deletions
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doc/go_gccgo_setup.html
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@ -8,10 +8,13 @@ Like <code>gcc</code> itself, <code>gccgo</code> is free software
distributed under distributed under
the <a href="http://www.gnu.org/licenses/gpl.html">GNU General Public the <a href="http://www.gnu.org/licenses/gpl.html">GNU General Public
License</a>. License</a>.
</p>
<p>
Note that <code>gccgo</code> is not the <code>6g</code> compiler; see Note that <code>gccgo</code> is not the <code>6g</code> compiler; see
the <a href="install.html"><code>6g</code> set up</a> instructions the <a href="install.html">Installing Go</a> instructions for that
for that compiler. compiler.
</p>
<h2 id="Source_code">Source code</h2> <h2 id="Source_code">Source code</h2>
@ -22,6 +25,7 @@ has <a href="http://gcc.gnu.org/svn.html">instructions for getting the
<code>gcc</code> source code</a>. The <code>gccgo</code> source code <code>gcc</code> source code</a>. The <code>gccgo</code> source code
is a branch of the main <code>gcc</code> code is a branch of the main <code>gcc</code> code
repository: <code>svn://gcc.gnu.org/svn/gcc/branches/gccgo</code>. repository: <code>svn://gcc.gnu.org/svn/gcc/branches/gccgo</code>.
</p>
<h2 id="Building">Building</h2> <h2 id="Building">Building</h2>
@ -32,6 +36,23 @@ the <a href="http://gcc.gnu.org/install/">instructions on the gcc web
site</a>. When you run <code>configure</code>, add the site</a>. When you run <code>configure</code>, add the
option <code>--enable-languages=go</code> (along with other languages you option <code>--enable-languages=go</code> (along with other languages you
may want to build). may want to build).
</p>
<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:
<pre>
svn checkout svn://gcc.gnu.org/svn/gcc/branches/gccgo gccgo
mkdir objdir
cd objdir
../gccgo/configure --enable-languages=c,c++,go
make
make install
</pre>
</p>
<h2 id="Using_gccgo">Using gccgo</h2> <h2 id="Using_gccgo">Using gccgo</h2>
@ -123,7 +144,7 @@ may pass the <code>-I</code> or <code>-L</code> option to
<code>gccgo</code>. Both options take directories to search. The <code>gccgo</code>. Both options take directories to search. The
<code>-L</code> option is also passed to the linker. <code>-L</code> option is also passed to the linker.
The <code>gccgo</code> compiler does not currently (2009-10-14) record The <code>gccgo</code> compiler does not currently (2009-11-06) record
the file name of imported packages in the object file. You must the file name of imported packages in the object file. You must
arrange for the imported data to be linked into the program. arrange for the imported data to be linked into the program.
@ -137,7 +158,7 @@ gccgo -o main main.o mypackage.o # Explicitly links with mypackage.o
<p> <p>
Some Go features are not yet implemented in <code>gccgo</code>. As of Some Go features are not yet implemented in <code>gccgo</code>. As of
2009-10-14, the following are not implemented: 2009-11-06, the following are not implemented:
<ul> <ul>
<li>Garbage collection is not implemented. There is no way to free memory. <li>Garbage collection is not implemented. There is no way to free memory.