Le 11/01/2013 00:05, Bruce Dubbs a écrit : > Pierre Labastie wrote: >> Hi, >> >> As the next gcc version will use a C++ compiler, I thought I could >> try to test the possibility of building gcc-4.7.2 with g++. There is a >> configure switch for that: --enable-build-with-cxx. > Thanks for the input Pierre. We are now about six weeks away from our > scheduled 7.3 release, so I suspect we will wait until after that to > incorporate gcc-4.8 even if it is released before March. > > It's always good to look ahead. Do you have any comparative metrics > about the size of generated code or time to build packages? > > -- Bruce Thanks for the answer. I only built with parallel -j flag, so timings are not reliable. It seems that having to build libstdc++ for pass 1 adds roughly 1.3 SBU (with methods 1 and 2, that is the only thing which is added). Concerning the sizes, I would not expect any changes eventually, since at the end, we build the same components. For method 2, the temporary storage might be somewhat high though, because of the necessity to keep the build tree of gcc during glibc building.
I'll do 3 builds, one with current SVN, one with method 1 and 1 with method 2, with no optimization (no -j flag), so expect some delay... Pierre -- http://linuxfromscratch.org/mailman/listinfo/lfs-dev FAQ: http://www.linuxfromscratch.org/faq/ Unsubscribe: See the above information page
