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GCC: Anonymous read-only CVS access
In an ongoing effort to accelerate development of GCC and provide an open development environment, we are making our CVS source repository available read-only to the public at large.
That way you can pick up any version (including releases) of GCC that is in our repository or our web pages.
In addition, you can browse our CVS history online at
- subversions.gnu.org using viewcvs, or
- gcc.gnu.org using cvsweb.
Using the CVS repository
If you don't already have CVS, we recommend you pick up a recent copy from CVShome.org. (Note that CVS versions up to 1.10.4 have "Y2K problems".)
Assuming you have CVS installed on your machine you can check out the GCC sources with the following sequence of commands:
Set CVSROOT in your environment to
:pserver:anoncvs@subversions.gnu.org:/cvsroot/gcc. Alternately add
-d :pserver:anoncvs@subversions.gnu.org:/cvsroot/gcc in the CVS
commands below (place it immediately after cvs, before any other
arguments).
Issue the command cvs login. You will be prompted for a
password; reply with the empty string.
Issue the command
to check out the compiler sources, respectively
cvs -z 9 co gcc
cvs -z 9 co wwwdocs
to check out our web pages.
Once you've got the repository checked out, cvs update will sync
your local copy with the repository. See the CVS manual for additional
information on how to use CVS.
Generated files
Our CVS source tree contains a number of files that are generated from other
source files by build tools such as Bison, Autoconf, and Gperf. Bison is now
required when using CVS to access our sources, but all other generated files are
included in the source tree so that GCC can be built without these build tools.
The CVS checkout and update operations do not insure that the timestamps of
generated files are later than those of the files they are generated from. The
script contrib/gcc_update updates the timestamps for all these
generated files. See the comments in that script for instructions on running
it.
GCC's build system (in particular Make) uses file timestamps to determine if
a generated file needs to be updated by running a particular build tool. Because
of this, GCC's build system may believe that a generated file needs regenerating
even though its source has not changed, and require a particular build tool to
rebuild that generated file. If the appropriate build tool is installed on your
system, then this will not be a problem. If you do not intend to make changes to
the source, you can avoid installing these build tools by running
contrib/gcc_update.
There has been some discussion of removing these generated files from GCC's CVS source tree (there is no discussion of removing them from the released source tarballs). If that happens then building GCC from the CVS source tree would require installing the above mentioned build tools. Installing these build tools is not particularly difficult, but can be time consuming especially if you only occasionally install GCC on a particular system.
The build tools that GCC uses are all available from the GNU Project (see http://www.gnu.org), are often already available on many systems, and can often be found already built for some systems. A partial list of these build tools is: Autoconf, Bison, Xgettext, Automake, and Gperf.
Conflicts when using cvs update
It is not uncommon to get CVS conflict messages for some generated files when updating your local sources from the CVS repository. Typically such conflicts occur with autoconf generated files.
As long as you haven't been making modifications to the generated files or
the generator files, it is safe to delete the offending file, then run cvs
update again to get a new copy.
CVS tags and checkouts
You can check out the latest version of the GCC 3.0 release branch with the following command:
cvs -z 9 co -rgcc-3_0-branch gcc
By changing the -r argument above you can check out particular
releases or snapshots or the latest snapshot. Other tags/branches you may want
to check out include:
- gcc_latest_snapshot
- gcc_ss_yyyymmdd
- gcc_3_2_release
- gcc-3_2-branch
- gcc_3_1_1_release
- gcc_3_1_release
- gcc-3_1-branch
- gcc_3_0_4_release
- gcc_3_0_3_release
- gcc_3_0_2_release
- gcc_3_0_1_release
- gcc_3_0_release
- gcc-3_0-branch
- gcc-2_95_3
- gcc-2_95_2-release
- gcc-2_95_1-release
- gcc-2_95-release
- gcc-2_95-branch
- egcs_1_1_2_release
- egcs_1_1_1_release
- egcs_1_1_release
- egcs_1_1_branch
- egcs_1_0_3_release
- egcs_1_0_2_release
- egcs_1_0_1_release
- egcs_1_0_release
- egcs_ss_yyyymmdd For snapshots prior to 19990913
- gnu-win32-b20-branch
- dfa-branch. This branch contains the insn scheduler with an automaton based pipeline hazard recognizer.
- cfg-branch
- ast-optimizer-branch
- x86-64-branch. This branch contains a stable development version for x86-64 development and is maintained by Jan Hubicka <jh@suse.cz> and Andreas Jaeger <aj@suse.de>.
- pch-branch. This branch contains work-in-progress towards a precompiled header implementation, including lots of garbage collector changes. As yet, the branch contains no actual precompiled header work; a public announcement will be made on the GCC mailing list when it is ready for testing.
- cp-parser-branch. This branch contains a new hand-written recursive descent parser for C++.
- tree-ssa-20020619-branch
Web pages
The web pages for the GCC project are also in the CVS repository and you can
check them out, submit patches, etc just like you do for the compiler itself.
Use cvs co wwwdocs to check out the web pages.
The host system
The setup of the machine running the gcc.gnu.org site is also available,
through cvsweb
and anonymous read-only CVS. Use the same procedure as above, but replace the
repository bits with :pserver:anoncvs@gcc.gnu.org:/cvs/sourceware
and infra.
Please send FSF & GNU inquiries & questions to gnu@gnu.org. There are also other ways to contact the FSF.
These pages are maintained by The GCC team.
Please send comments on these web pages and GCC to gcc@gnu.org or gcc@gcc.gnu.org, send other questions to gnu@gnu.org.Copyright (C) Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
Verbatim copying and distribution of this entire article is permitted in any medium, provided this notice is preserved.
| Last modified 2002-08-19 |