Hi Zack, > On 29. Jul 2024, at 15:36, Zack Weinberg <zack@xxxxxxxxxxxx> wrote: > > We should probably also document the AIX issues in the "writing portable > C programs" section of the manual if we don't already. Yes, that would be nice. Something along the lines of…? “N.B. AC_FUNC_MMAP is known to fail on IBM AIX at least up to version 7.3. This is due to non-compliant implementation of MAP_FIXED. If your use case doesn’t require MAP_FIXED, you might wish to use AC_CHECK_HEADERS_ONCE([sys/mman.h]) and AC_CHECK_FUNCS_ONCE([mmap]) instead for a more basic check.” > Can any of you think of other subsets of mmap functionality that are > worth supplying a test for in autoconf? Do any of you have time to > work on patches for any or all of this? Well, now that I understand more about the issue, I think that a better idea would be to just remove all of the mmap stuff from Midnight Commander instead ;-) It’s not really needed these days anyways… So don’t count on me for that, but I really do appreciate the discussion, this was very helpful! All the best, Yury
