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gccgo will be distributed under the same license as the rest of the Go code. R=r, rsc http://go/go-review/1024019
92 lines
3.3 KiB
HTML
92 lines
3.3 KiB
HTML
<!-- Contributing to the gccgo frontend -->
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<h2>Introduction</h2>
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<p>
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These are some notes on contributing to the <code>gccgo</code>
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frontend for GCC. For information on contributing to parts of Go other
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than <code>gccgo</code>, see <a href="contribute.html">Contributing to
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the Go project</a>. For information on building <code>gccgo</code>
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for yourself, see <a href="gccgo_install.html">Setting up and using
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gccgo</a>.
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</p>
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<h2>Legal Prerequisites</h2>
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<p>
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You must follow the <a href="contribute.html#copyright">Go copyright
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rules.</a>
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</p>
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<h2>Code</h2>
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<p>
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The source code for the <code>gccgo</code> frontend may be found in
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the directory <code>gcc/go</code>. The frontend is written in C++ and
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as such the GNU coding standards do not entirely apply; in writing
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code for the frontend, follow the formatting of the surrounding code.
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Although the frontend is currently closely tied to the rest of the gcc
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codebase, we plan to make it more independent. Any new code which
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uses other parts of gcc should be segregated in an appropriate file,
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such as <code>gogo-tree.cc</code>.
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</p>
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<p>
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The runtime library for <code>gccgo</code> is mostly the same as the
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library in the main Mercurial repository. The library code in the
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Mercurial repository is periodically copied into
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the <code>gccgo</code> repository. Accordingly, most library changes
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should be made in Mercurial. Changes to the few <code>gccgo</code>
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specific parts of the library should follow the process described
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here. The <code>gccgo</code> specific parts of the library are
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everything in the <code>libgo</code> directory except for
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the <code>libgo/go</code> subdirectory.
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</p>
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<h2>Testing</h2>
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<p>
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All patches must be tested. There are two test suites. A patch that
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introduces new failures is not acceptable.
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</p>
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<p>
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To run the compiler test suite, run <code>make check-go</code> in the
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<code>gcc</code> subdirectory of your build directory. This will run
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various tests underneath <code>gcc/testsuite/go.*</code>. This
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includes a copy of the tests in the Mercurial repository, which are
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run using the DejaGNU script found in
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in <code>gcc/testsuite/go.test/go-test.exp</code>. Many of the
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compiler tests may be run without the Go library, but some do require
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the library to built first.
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</p>
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<p>
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To run the library test suite, run <code>make
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check-target-libgo</code> in the top level of your build directory.
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</p>
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<p>
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Most new tests should be submitted to the Mercurial repository for
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copying into the <code>gccgo</code> repository. If there is a need
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for specific tests for <code>gccgo</code>, they should go in
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the <code>gcc/testsuite/go.go-torture</code>
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or <code>gcc/testsuite/go.dg</code> directories.
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</p>
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<h2>Submitting Changes</h2>
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<p>
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Proposing a patch should follow the standard GCC rules. That is, the
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patch should be sent to the mailing
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list <code>gcc-patches@gcc.gnu.org</code> as a diff—the output
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of the <code>diff</code> program with the <code>-c</code>
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or <code>-u</code> option. In the future we are likely to set up a
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separate gccgo-specific mailing list, which should also be CC'ed; we
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will update this document at that time. Patch emails should include a
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ChangeLog entry, though the ChangeLog entry should not be in the diff
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itself. ChangeLog files are a standard part of GNU programs; see
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<a href="http://www.gnu.org/prep/standards/html_node/Change-Logs.html">the
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GNU coding standards</a>.
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</p>
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