On Monday, August 8, 2016 1:25:32 PM CEST Nicholas Piggin wrote: > On Sat, 6 Aug 2016 22:10:45 +0200 > Sam Ravnborg <sam@xxxxxxxxxxxx> wrote: > > > Hi Nicholas. > > > > On Fri, Aug 05, 2016 at 10:11:59PM +1000, Nicholas Piggin wrote: > > > From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> > > > > > > ld -r is an incremental link used to create built-in.o files in build > > > subdirectories. It produces relocatable object files containing all > > > its input files, and these are are then pulled together and relocated > > > in the final link. Aside from the bloat, this constrains the final > > > link relocations, which has bitten large powerpc builds with > > > unresolvable relocations in the final link. > > > > > > Alan Modra has recommended the kernel use thin archives for linking. > > > This is an alternative and means that the linker has more information > > > available to it when it links the kernel. > > > > > > This patch enables a config option architectures can select, > > If we want to do this, then I suggest to make the logic reverse. > > Architectures that for some reasons cannot use this should > > have the possibility to avoid it. But let it be enabled by default. > > I was thinking the build matrix (architectures x build options x toolchains) > is a bit too large to switch it for everybody. I've far from even tested it > for a fraction of powerpc builds. I would prefer arch maintainers to switch > it themselves, but I do hope we can move everybody and just remove the old > method within a few releases. > > But I'm happy to go with whatever arch and kbuild maintainers prefer, so I > appreciate any discussion on it. How about making the option visible for everyone with CONFIG_EXPERT? That way you don't get it by default, but you do get it with randconfig and allmodconfig build testing. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
