Build failure: pkgsLLVM.libunwind

[RossComputerGuy]

Steps To Reproduce

Steps to reproduce the behavior:

1. build pkgsLLVM.libunwind

Build log

make[2]: Entering directory '/build/source/src'
  CC       os-linux.lo
  CC       dl-iterate-phdr.lo
  CC       mi/init.lo
  CC       mi/flush_cache.lo
  CC       mi/mempool.lo
  CC       mi/strerror.lo
  CC       aarch64/is_fpreg.lo
  CC       aarch64/regname.lo
  CC       mi/backtrace.lo
  CC       mi/dyn-cancel.lo
  CC       mi/dyn-info-list.lo
  CC       mi/dyn-register.lo
  CC       mi/Laddress_validator.lo
  CC       mi/Ldestroy_addr_space.lo
  CC       mi/Ldyn-extract.lo
  CC       mi/Lfind_dynamic_proc_info.lo
  CC       mi/Lget_accessors.lo
  CC       mi/Lget_fpreg.lo
  CC       mi/Lset_fpreg.lo
  CC       mi/Lget_proc_info_by_ip.lo
  CC       mi/Lget_proc_name.lo
  CC       mi/Lget_reg.lo
  CC       mi/Lput_dynamic_unwind_info.lo
  CC       mi/Lset_cache_size.lo
  CC       mi/Lset_caching_policy.lo
  CC       mi/Lset_iterate_phdr_function.lo
  CC       mi/Lset_reg.lo
  CC       mi/Lget_elf_filename.lo
  CC       aarch64/Los-linux.lo
In file included from aarch64/Los-linux.c:4:
aarch64/Gos-linux.c:42:9: error: inline assembly requires more registers than available
   42 |         "ldr x0,  %[x0]\n\t"
      |         ^
aarch64/Gos-linux.c:42:9: error: inline assembly requires more registers than available
aarch64/Gos-linux.c:42:9: error: inline assembly requires more registers than available
aarch64/Gos-linux.c:42:9: error: inline assembly requires more registers than available
aarch64/Gos-linux.c:42:9: error: inline assembly requires more registers than available
aarch64/Gos-linux.c:42:9: error: inline assembly requires more registers than available
aarch64/Gos-linux.c:42:9: error: inline assembly requires more registers than available
aarch64/Gos-linux.c:42:9: error: inline assembly requires more registers than available
aarch64/Gos-linux.c:42:9: error: inline assembly requires more registers than available
aarch64/Gos-linux.c:42:9: error: inline assembly requires more registers than available
10 errors generated.
make[2]: *** [Makefile:4801: aarch64/Los-linux.lo] Error 1
make[2]: Leaving directory '/build/source/src'
make[1]: *** [Makefile:2914: all] Error 2
make[1]: Leaving directory '/build/source/src'
make: *** [Makefile:619: all-recursive] Error 1

Additional context

On aarch64-linux, nixpkgs master cherry-picked 6234b3e

Notify maintainers

@orivej

Metadata

Please run nix-shell -p nix-info --run "nix-info -m" and paste the result.

 - system: `"aarch64-linux"`
 - host os: `Linux 5.15.156, NixOS, 24.05 (Uakari), 24.05.20240418.bc279bb`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.18.2`
 - nixpkgs: `/run/current-system/nixpkgs`

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[pwaller]

Looks like libunwind addressed this on main Jun 11th:

libunwind/libunwind@55448f6

And there is a backport PR to the 1.8 series: libunwind/libunwind#770