Re: Tested wanted: BSD-licensed libgcc replacement, libcompiler_rt
On 22-10-2010 16:30, Ed Schouten wrote: Hello everyone, At EuroBSDCon I was talking with some committers active in the area of Clang (brooks, kwm, others) about replacing our libgcc shipped with GCC 4.2.1 with a BSD-licensed version. The LLVM folks have a BSD licensed implementation called libcompiler_rt. See: http://compiler-rt.llvm.org/ [...] I've created a branch in Subversion which replaces libgcc.a and libgcc_p.a with libcompiler_rt.a and libcompiler_rt_p.a and symlinks it to the original names. It seems to survive a `make universe' and it works properly on at least amd64. [...] How to test this: - Check out the branch from SVN: svn co svn://svn.freebsd.org/base/user/ed/compiler-rt/ - Rebuild and reinstall world (and kernel). - Rebuild all your software (yes, I know it's unfortunate). - See whether software crashes or misbehaves, while it didn't do that previously. I noticed that the nvidia driver (from ports/x11/nvidia-driver*) needs to be recompiled after upgrading from HEAD to this branch. If you don't, it will load, but cause a panic when used by X. Rene ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org
Re: Tested wanted: BSD-licensed libgcc replacement, libcompiler_rt
Hi all, * Ed Schouten e...@80386.nl, 20101022 16:30: At EuroBSDCon I was talking with some committers active in the area of Clang (brooks, kwm, others) about replacing our libgcc shipped with GCC 4.2.1 with a BSD-licensed version. The LLVM folks have a BSD licensed implementation called libcompiler_rt. See: http://compiler-rt.llvm.org/ I was talking with Robert Watson about this the other day. The codebase of compiler-rt also contains the libBlocksRuntime.so library, which is fundamental in making Grand Central Dispatch (GCD) work. Because of its small size (12 KB), I think I'll also include it in the import. This means that after the import, libdispatch is the only port needed to make Grand Central Dispatch work on FreeBSD HEAD. -- Ed Schouten e...@80386.nl WWW: http://80386.nl/ pgpyBb6J3YDS1.pgp Description: PGP signature
Tested wanted: BSD-licensed libgcc replacement, libcompiler_rt
Hello everyone, At EuroBSDCon I was talking with some committers active in the area of Clang (brooks, kwm, others) about replacing our libgcc shipped with GCC 4.2.1 with a BSD-licensed version. The LLVM folks have a BSD licensed implementation called libcompiler_rt. See: http://compiler-rt.llvm.org/ Right now it is already complete enough to replace libgcc.a and libgcc_p.a (mostly math rountines), but it doesn't yet implement the functionality (e.g. unwinder) to replace libgcc_eh.a, libgcc_eh_p.a and libgcc_s.so.1. I've created a branch in Subversion which replaces libgcc.a and libgcc_p.a with libcompiler_rt.a and libcompiler_rt_p.a and symlinks it to the original names. It seems to survive a `make universe' and it works properly on at least amd64. Right now the only issue I can think of, is that __clear_cache() is broken on ARM, but that can be fixed trivially. My plan would be to commit this work to HEAD by the end of November (1 month from now), but it would be nice if it could get some more testing in the mean time, especially on non-x86 architectures. How to test this: - Check out the branch from SVN: svn co svn://svn.freebsd.org/base/user/ed/compiler-rt/ - Rebuild and reinstall world (and kernel). - Rebuild all your software (yes, I know it's unfortunate). - See whether software crashes or misbehaves, while it didn't do that previously. In the mean time, I'll see if I can get the Ports folks to run an exp-run with this branch, which should already give some coverage. Thanks! -- Ed Schouten e...@80386.nl WWW: http://80386.nl/ pgp4nEKTk6e5K.pgp Description: PGP signature
Re: Tested wanted: BSD-licensed libgcc replacement, libcompiler_rt
* Ed Schouten e...@80386.nl, 20101022 16:30: - Rebuild all your software (yes, I know it's unfortunate). Right after I sent this, I thought I'd better clarify this. You don't need to rebuild your software. This change will not break the existing ABI. This step is just mentioned here, since libgcc.a is statically linked into applications. Simply rebuilding and reinstall world is not sufficient to make 3rd party applications use this. -- Ed Schouten e...@80386.nl WWW: http://80386.nl/ pgph9jTT1tKjk.pgp Description: PGP signature
