Re: how can we test the hexagon port in mainline

[Arnd Bergmann]

On Wed, Jun 23, 2021 at 5:17 PM Christoph Hellwig <hch@xxxxxx> wrote:
>
> It seem like it still isn't complete enought for a kernel build, though:
>
> $ export CROSS_COMPILE=/opt/clang+llvm-12.0.0-cross-hexagon-unknown-linux-musl/x86_64-linux-gnu/bin/hexagon-unknown-linux-musl-
> $ make ARCH=hexagon LLVM=1 oldconfig
> ...
> scripts/Kconfig.include:40: linker 'ld.lld' not found

I tried this using the prebuilt binaries from apt.llvm.org:

$ make ARCH=hexagon LLVM=1 O=obj-hexagon CROSS_COMPILE=hexagon-linux-
LLVM_IAS=1 CC=llvm-12 defconfig modules vmlinux
<stdin>:1515:2: warning: syscall clone3 not implemented [-W#warnings]
#warning syscall clone3 not implemented
 ^
1 warning generated.

Doing the same thing with allmodconfig results in an internal error
with clang-12
while compiling kernel/locking/lockdep.c. Same thing with clang-13.
After turning
off lock debugging, it seems fine.

       Arnd