Hi Nathan, On Fri, 2024-06-21 at 11:53 -0700, Nathan Chancellor wrote: > I think a good amount of the reasoning below the '---' could probably > make it into the commit message as well but I don't have much of a > vision there, maybe one of the SPARC folks will. > > I saw through the LLVM issue above that one other patch is necessary to > fix an issue in the vDSO [1], which I applied in testing this one. I > noticed in applying that change that you appear to be working on 6.1, > which is fine for now, but you'll need another diff once you get to a > newer version, as we stopped using CROSS_COMPILE to set clang's > '--target=' value: > > diff --git a/scripts/Makefile.clang b/scripts/Makefile.clang > index 6c23c6af797f..2435efae67f5 100644 > --- a/scripts/Makefile.clang > +++ b/scripts/Makefile.clang > @@ -10,6 +10,7 @@ CLANG_TARGET_FLAGS_mips := mipsel-linux-gnu > CLANG_TARGET_FLAGS_powerpc := powerpc64le-linux-gnu > CLANG_TARGET_FLAGS_riscv := riscv64-linux-gnu > CLANG_TARGET_FLAGS_s390 := s390x-linux-gnu > +CLANG_TARGET_FLAGS_sparc := sparc64-linux-gnu > CLANG_TARGET_FLAGS_x86 := x86_64-linux-gnu > CLANG_TARGET_FLAGS_um := $(CLANG_TARGET_FLAGS_$(SUBARCH)) > CLANG_TARGET_FLAGS := $(CLANG_TARGET_FLAGS_$(SRCARCH)) > > With those, I can successfully build a kernel with clang that boots in > QEMU :) > > $ make -skj"$(nproc)" \ > ARCH=sparc64 \ > CC=clang \ > CROSS_COMPILE=sparc64-linux-gnu- \ > LLVM_IAS=0 \ > mrproper defconfig all > > $ qemu-system-sparc64 \ > -serial mon:stdio \ > -display none \ > -no-reboot \ > -M sun4u \ > -cpu 'TI UltraSparc IIi' \ > -m 512 \ > -append console=ttyS0 \ > -initrd sparc64-rootfs.cpio \ > -kernel arch/sparc/boot/image > ... > [ 1.788544] Run /init as init process > ... > Linux version 6.10.0-rc4+ (nathan@thelio-3990X) (ClangBuiltLinux clang version 19.0.0git (https://github.com/llvm/llvm-project a083e50f53f0f9eb9ad0c5b65f3c627cf97043e6), GNU ld (GNU Binutils) 2.42) #1 SMP Fri Jun 21 11:36:18 MST 2024 > ... Wow, this is really great progress. Kudos to everyone who helped to make this happen! Adrian -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer `. `' Physicist `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
