Building with Zig 0.16 chokes on vendored libfmt

[directmusic]

Building clap-wrapper with the latest version of the Zig compiler (v0.16) no longer works due to format.h in the vendored libfmt not including stdlib.h. It is unable to find malloc/free.

Is there any opposition to updating the vendored libfmt? Or as a minimal change, would it be possible to pull in a change to add <cstdlib> / <stdlib.h> into the format header?

[baconpaul]

We can definitely update it sure. As long as it passes our compiler test matrix in CI no problem.

I thought we also had a way to byo-fmt though. Yeah we do now I see it. If your cmake environment defines the target 'fmt-header-only' ahead of calling the wrapper cmake it will use that rather than the rendered version.

clap-wrapper/cmake/shared_prologue.cmake

Line 185 in 18a9545

if (TARGET fmt-header-only)

[directmusic]

Ahh perfect. I now remember seeing that in the past but completely forgot it was an option. That will definitely work. Thank you!