For a long time, the autoconf mmap test has failed on Cygwin even though
Cygwin has a working mmap. This was reported to bug-autoconf in
November 2009, and a patch that fixed it for Cygwin was submitted by
Eric Blake:
http://lists.gnu.org/archive/html/bug-autoconf/2009-11/msg00015.html
It was reported in
http://lists.gnu.org/archive/html/autoconf-patches/2009-11/msg00017.html
that the patch didn't help on HP/UX 11, which is another platform where
the test was failing. I can't find any follow-up to this in the
archives of the autoconf mailing lists.
Is there any chance of getting this bug fixed? Currently, the cygport
tool (which many Cygwin package maintainers use to build packages) works
around it by exporting
ac_cv_func_mmap_fixed_mapped=yes
in the build script. But it would be better to get a solution in
autoconf itself.
Ken
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