On 19:34 Thu 07 Nov , Rob Herring wrote: > On Thu, Nov 7, 2013 at 1:20 PM, Stephen Boyd <sb...@codeaurora.org> wrote: > > If we're running on a v7 ARM CPU, detect if the CPU supports the > > sdiv/udiv instructions and replace the signed and unsigned > > division library functions with an sdiv/udiv instruction. > > [snip] > > > diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile > > index bd454b0..6ed6496 100644 > > --- a/arch/arm/lib/Makefile > > +++ b/arch/arm/lib/Makefile > > @@ -15,6 +15,9 @@ lib-y := backtrace.o changebit.o csumipv6.o > > csumpartial.o \ > > io-readsb.o io-writesb.o io-readsl.o io-writesl.o \ > > call_with_stack.o > > > > +lib-$(CONFIG_CPU_V7) += div-v7.o > > +CFLAGS_div-v7.o := -march=armv7-a > > Won't this fail to build if the compiler doesn't have armv7-a support. > Perhaps we don't care about compilers that old.
use the propoer compiler to compile a armv7 kernel Best Regards, J. > > Rob > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-ker...@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
