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Contributing to GDB
GDB is a collaborative project and one which wants to encourage new
development. You may wish to fix GDB bugs, improve testing, port GDB
to a new platform, update documentation, add new GDB features, and the
like. To help with this, there is a lot of documentation
available.. In addition to the user guide and internals manual
included in the GDB distribution, the GDB web pages also contain much
information.
You may also want to submit your change so that can be considered for
conclusion in a future version of GDB (see below). Regardless, we
encourage you to distribute the change yourself.
If you don't feel up to hacking GDB, there are still plenty of ways to
help! You can answer questions on the mailing lists, write
documentation, find bugs, create a GDB related website (contribute to
the official GDB web site), or create a GDB related software
package. We welcome all of the above and feel free to ask on the GDB
mailing lists if you are looking for feedback or for people to review
a work in progress.
Ref: http://sourceware.cygnus.com/gdb
Finally, there are certain legal requirements and style issues which
all contributors need to be aware of.
o Coding Standards
All contributions must conform to the GNU Coding Standard.
http://www.gnu.ai.mit.edu/prep/standards_toc.html
Submissions which do not conform to the standards will be
returned with a request to reformat the changes.
For GDB, that standard is more tightly defined. GDB's
coding standard is determined by the output of
gnu-indent.
This situation came about because, by the start of '99,
GDB's coding style was so bad an inconsistent that it was
decided to restart things from scratch.
o Copyright Assignment
There are certain legal requirements
Before we can accept code contributions from you, we need a
copyright assignment form filled out.
If you've developed some addition or patch to GDB that you
would like to contribute, you should fill out a copyright
assignment form and send it in to the FSF. We are unable to
use code from you until this is on-file at the FSF, so get
that paperwork in! This form covers one batch of changes.
Ref: http://gcc.gnu.org/fsf-forms/assignment-instructions.html
If you think you're going to be doing continuing work on GDB, it
would be easier to use a different form, which arranges to
assign the copyright for all your future changes to GDB. It is
called assign.future. Please note that if you switch
employers, the new employer will need to fill out the
disclaim.future form; there is no need to fill out the
assign.future form again.
Ref: http://gcc.gnu.org/fsf-forms/assign.future
Ref: http://gcc.gnu.org/fsf-forms/disclaim.future
There are several other forms you can fill out for different
circumstances (e.g. to contribute an entirely new program, to
contribute significant changes to a manual, etc.)
Ref: http://gcc.gnu.org/fsf-forms/copyrights.html
Small changes can be accepted without a copyright assignment
form on file.
This is pretty confusing! If you are unsure of what is
necessary, just ask the GDB mailing list and we'll figure out
what is best for you.
Note: Many of these forms have a place for "name of
program". Insert the name of one program in that place -- in
this case, "GDB".
o Submitting Patches
Every patch must have several pieces of information before we
can properly evaluate it.
A description of the bug and how your patch fixes this
bug. A reference to a testsuite failure is very helpful. For
new features a description of the feature and your
implementation.
A ChangeLog entry as plaintext (separate from the patch); see
the various ChangeLog files for format and content. Note that,
unlike some other projects, we do require ChangeLogs also for
documentation (i.e., .texi files).
The patch itself. If you are accessing the CVS repository at:
Cygnus, use "cvs update; cvs diff -c3p"; else, use "diff -c3p
OLD NEW" or "diff -up OLD NEW". If your version of diff does
not support these options, then get the latest version of GNU
diff.
We accept patches as plain text (preferred for the compilers
themselves), MIME attachments (preferred for the web pages),
or as uuencoded gzipped text.
When you have all these pieces, bundle them up in a mail
message and send it to gdb-patches@sourceware.cygnus.com. All
patches and related discussion should be sent to the
gdb-patches mailinglist. For further information on the GDB
CVS repository, see the Anonymous read-only CVS access and
Read-write CVS access page.
--
Supplemental information for GDB:
o Please try to run the relevant testsuite before and after
committing a patch
If the contributor doesn't do it then the maintainer will. A
contributor might include before/after test results in their
contribution.
o For bug fixes, please try to include a way of
demonstrating that the patch actually fixes something.
The best way of doing this is to ensure that the
testsuite contains one or more test cases that
fail without the fix but pass with the fix.
People are encouraged to submit patches that extend
the testsuite.
o Please read your patch before submitting it.
A patch containing several unrelated changes or
arbitrary reformats will be returned with a request
to re-formatting / split it.
o If ``gdb/configure.in'' is modified then you don't
need to include patches to the regenerated file
``configure''.
The maintainer will re-generate those files
using autoconf (2.13 as of 2000-02-29).
o If ``gdb/gdbarch.sh'' is modified, you don't
need to include patches to the generated files
``gdbarch.h'' and ``gdbarch.c''.
See ``gdb/configure.in'' above.
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