Failing to build 1.25.2 on ppc64le

[tom--pollard]

Hi

1.25.1 is building just fine, but with 1.25.2 we're getting this and only on ppc64le:

alsoft-modules/phase_shifter.cppm:22:8: internal compiler error: Segmentation fault
   22 | export module phase_shifter;
      |        ^~~~~~
unit line offset out of range

Full log at: https://gitlab.com/freedesktop-sdk/freedesktop-sdk/-/jobs/14654022299

Which I assume is down to the addition of this in the release:

7466303

The same toolchain builds 1.25.2 fine for x86-64, aarch64, and riscv64 and we've tried with both gcc16.1 & gcc15.2

Source: https://gitlab.com/freedesktop-sdk/freedesktop-sdk/-/merge_requests/32483

[kcat]

Seems to be a compiler bug, given it being an internal compiler error. There doesn't look to be anything wrong with the code, and it only seems to be a problem with a particular target. You should be able to workaround the issue by passing -DALSOFT_ENABLE_MODULES=OFF to cmake to disable use of modules on affected systems.

[tom--pollard]

@kcat thanks for the quick input!

For now we'll take your lead and disable it on ppc64le builds, and have raised our own issue to track re-enablement / reporting the compiler bug