pre-POSIX.1-2001 systems do not have <sys/select.h>
authorRobert Schiele <rschiele@gmail.com>
Thu, 24 Jan 2008 18:34:46 +0000 (19:34 +0100)
committerJunio C Hamano <gitster@pobox.com>
Thu, 24 Jan 2008 22:01:28 +0000 (14:01 -0800)
POSIX.1-2001 has declaration of select(2) in <sys/select.h>, but
in the previous version of SUS, it was declared in <sys/time.h>
(which is already included in git-compat-util.h).

This introduces NO_SYS_SELECT_H macro in the Makefile to be set
on older systems, to skip inclusion of <sys/select.h> that does
not exist on them.

We could check _POSIX_VERSION with 200112L and do this
automatically, but earlier it was reported that the approach
does not work well on some vintage of HP-UX. Other systems may
get _POSIX_VERSION itself wrong. At least for now, this manual
configuration is safer.

Signed-off-by: Robert Schiele <rschiele@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
No differences found