[PATCH] Fix _GMP_H_HAVE_FILE detection on recent FreeBSD

[Vincent Lefevre]

On 2026-09-07 13:53:19 +0200, Marc Glisse wrote:
> it looks like, soon after your message, the old header guard was restored in
> FreeBSD, and it isn't necessary to change GMP anymore. Can you confirm?

In any case, since until now, the macro closely depends on the system
as seen in gmp.h, I think that __STDC_VERSION_STDIO_H__ should be tested
too for future C libraries (or if some other library decides to change).

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