Re: AC_FUNC_MMAP lacks <unistd.h> include?

[Paul Eggert]

On 5/9/23 18:40, Sam James wrote:
> It looks like this is still the case in master as well.

Thanks for reporting that. Simply including unistd.h isn't enough in 
general, as POSIX no longer requires getpagesize to be declared there. 
So I instead installed the attached patch, which changes the test so 
that it doesn't use getpagesize. This is a conservative-enough approach 
that it should be OK to squeeze it in before the next Autoconf release.

0001-Port-AC_FUNC_MMAP-to-more-modern-systems.patch
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