Re: [PATCH v2 0/7] selftests/nolibc: customize CROSS_COMPILE for all supported architectures

Hi Zhangjin,

On Sat, Aug 12, 2023 at 04:27:01AM +0800, Zhangjin Wu wrote:

Hi, Willy

Here is v2 of the customized CROSS_COMPILE support, this helps a lot during the testing of the other cross-arch nolibc changes:

$ ARCHS="i386 x86_64 arm64 arm mips ppc ppc64 ppc64le riscv s390"
$ for arch in ${ARCHS[@]}; do printf "%9s: " $arch; make run-user XARCH=$arch | grep status; done

Based on your suggestion, we did this changes:

• The qemu notes patch [1] is removed, welcome your doc file ;-)
• Arnd's crosstools are customized by default
• Import cc-cross-prefix to support local cross toolchains too
• Use mips64 toolchains for mips like x86_64 toolchains for i386, allow download less toolchains
• Use HOSTCC for libc-test compiling

(...)

I think it's basically OK (just this mips64 thing). I've picked patch 3 already since it's a fix. Once we agree on what to do there, I can queue it if that helps (I can modify mips64- to mips- in the patch if that's OK for you, no need to resend for this, just let me know).

I think that later I'll further extend XARCH with new variants to support ARMv5 and Thumb2, because we have different code for this and I continue to manually change the CFLAGS to test both.

Thanks, Willy