On 2020-12-22, 'Nick Desaulniers' via Clang Built Linux wrote:
Hello! I was playing with some of LLVM's experimental backends (m68k) and saw there was a CSKY backend. I rebuilt LLVM to support CSKY, but I ran into trouble building the kernel before even getting to the compiler invocation: $ ARCH=csky CROSS_COMPILE=csky-linux-gnu- make CC=clang -j71 defconfig ... scripts/Kconfig.include:40: linker 'csky-linux-gnu-ld' not found My distro doesn't package binutils-csky-linux-gnu, is there documentation on how to build the kernel targeting CSKY, starting with building GNU binutils configured with CSKY emulation?
Note also that the llvm/lib/Target/CSKY has not been fully upstreamed yet. It is a WIP https://lists.llvm.org/pipermail/llvm-dev/2020-August/144481.html I will not expect clang csky to work currently. (The latest committed LLVM patch is https://reviews.llvm.org/D93372 Normally committing an important piece of a large patch series like this should take a bit longer time longer after someone in the community accepted it https://llvm.org/docs/CodeReview.html#can-code-be-reviewed-after-it-is-committed ) I do want to raise the recent LLVM M68k target. Its patches ([M67k] (Patch */8)) are very organized and the main proposer shares updates to llvm-dev regularly. There is a lot from the process where the C-SKY target can learn from.
