Vali On Aug 8, 2013, at 12:55 AM, Vali Cobelea <valentin.cobe...@enea.com> wrote:
> Hi, > > We noticed that the GCC parallel make flag (PARALLEL_MAKE, located in > "meta/recipes-devtools/gcc/gcc-cross-canadian_4.?.bb") got changed from "-j > 32" to simply nothing. > We are wondering what was the reason for this change, which seems to have > been made somewhere before the fall of 2012, while the GCC was around version > 4.6 or earlier (for each we dont have the repository to track down the > change). > > After several builds where the compile time for GCC got measured, I can say > that this flag indeed reduces the build time, when it is put at "-j 32" > (using a proper build machine). > In average the build time frame was reduced by 18%. > > Much appreciated any thoughts on this, I know that it has been a while since > this change happen. > There were race conditions happening with the build. I have not verified if they have been fixed. However you could try remove PARALLEL_MAKE = "" from recipe and then it should respect the global -j value and see if this builds consistently. If it does propose a patch to remove it > Thank you very much, > Vali > _______________________________________________ > Openembedded-core mailing list > Openembedded-core@lists.openembedded.org > http://lists.openembedded.org/mailman/listinfo/openembedded-core _______________________________________________ Openembedded-core mailing list Openembedded-core@lists.openembedded.org http://lists.openembedded.org/mailman/listinfo/openembedded-core
