В Wed, 28 Jan 2015 18:33:59 +0000 Leif Lindholm <leif.lindh...@linaro.org> пишет:
> commit 3661261fe17a8fe19681073889b5b36ec1ee823d, > "Always add -msoft-float to avoid compiler generating float > arithmetics." breaks the arm64 build. > > -msoft-float is not a valid command line option for aarch64 (as far as > I can see, it is technically a target-specific option which just > happens to exist for most targets - including arm). > > This setting will need to be conditionalised somehow. > An option that works for arm64 is -march=armv8-a+nofp+nosimd. > > Would something like this be an acceptable workaround?: > > diff --git a/configure.ac b/configure.ac > index a3bca06..c99e1ea 100644 > --- a/configure.ac > +++ b/configure.ac > @@ -678,7 +678,11 @@ fi > # that floats are a good fit to run instead of what's written in the > # code. > # Given that floating point unit is disabled (if present to begin > # with) > # when GRUB is running which may result in various hard crashes. > -TARGET_CFLAGS="$TARGET_CFLAGS -msoft-float" > +if ( test "x$target_cpu" = xarm64 ); then Why subshell? > + TARGET_CFLAGS="$TARGET_CFLAGS -march=armv8-a+nofp+nosimd" > +else > + TARGET_CFLAGS="$TARGET_CFLAGS -msoft-float" > +fi > > # By default, GCC 4.4 generates .eh_frame sections containing unwind > # information in some cases where it previously did not. GRUB doesn't > # need > > / > Leif > > _______________________________________________ > Grub-devel mailing list > Grub-devel@gnu.org > https://lists.gnu.org/mailman/listinfo/grub-devel _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel
