Hi Brett, On Fri, Mar 19, 2010 at 04:27:16PM -0400, Brett Viren wrote: > Peter Elmer <peter.el...@cern.ch> writes: > > > There were also other oddities about the "gcc43 preview" build, e.g. > > difficulties building boost, that caused the LHC experiments to reject it > > in favor of our own build(s) of the stock gcc43x. (Subsequent to that > > decision > > the "preview" switched to gcc4.4...) > > Funny you should say this! I'm trying to get gcc43 installed just so I > can match what is on the nodes on our RACF farm which are heavily > influenced by ATLAS's needs. However, I see that the stock > gcc43-4.3.2-7.el5 packages installed. FWIW, we also rely on Boost and > I've built it (v1.38) with gcc43 and didn't see any problems.
IIRC, it failed to build of the subsequent versions (1.39, IIRC) and digging through my mail I see that came from something in the libstdc++ compatibility changes they made in the RH "preview" gcc43. The "gcc43-4.3.2-7.el5" packages you see installed are probably the "preview" build, I believe, and not "stock" gcc43x (by which I mean what you get if you download the gcc43{1,2,3,4} source tarball yourself and build it, unhacked to back up libstdc++). I'm pretty certain that Atlas isn't using the OS-install of the "preview" build, but rather a build of the compiler in their own software area, but you should check with someone from Atlas in case I am missing something. They were part of the discussions that chose to use the stock GNU gcc43 over the RHEL5 "preview" gcc43. (I'm 100% certain that CMS isn't using it, but that doesn't help you... ;-) Pete ------------------------------------------------------------------------- Peter Elmer E-mail: peter.el...@cern.ch Phone: +41 (22) 767-4644 Address: CERN Division PPE, Bat. 32 2C-14, CH-1211 Geneva 23, Switzerland -------------------------------------------------------------------------