m68k backend is crashing with segfault

[ikskuh]

Zig Version

0.10.0-dev.1261+6f986298c

Steps to Reproduce

[felix@denkplatte-v2 e45fca2d]$ touch empty.zig
[felix@denkplatte-v2 e45fca2d]$ zig build-obj -fno-emit-bin -target m68k-freestanding empty.zig
Segmentation fault
exit code: 139
[felix@denkplatte-v2 e45fca2d]$

Expected Behavior

The code should've build an object file

Actual Behavior

A segmentation fault happens

[mlarouche]

LLVM codebase only support m68k st the compilation stage at the moment, LLD does not support m68k in their ELF module, you should check again at next LLVM update

[ziggekatten]

New to this stuff, but is it possible to compile for m68k at all?

[nektro]

llvm has experimental support for m68k, zig doesn't support it out of the box yet but there's a flag if you build zig yourself

[ikskuh]

I want to tackle that at one point. It should be a managable amount of work on the selfhosted compiler

[ziggekatten]

Spent the afternoon trying to find the flag for building zig. My LLVM (15) is now built with m68k support, and can compile C-code that creates correct m68k elf binary that runs in qemu. I'm no LLVM/cmake/make/gcc wizard, and trying to find the various option is a pain really. For zig to build, do i need to modify a cmake/makefile, or are there some cmake parameter here that I'm missing?

[nektro]

./build/stage3/bin/zig build -Dllvm-has-m68k -Dno-lib, there's no cmake option currently

[alexrp]

The original crash here no longer reproduces.