Re: [PATCH] HP-UX does not have select.h

[Junio C Hamano <gitster@pobox.com>]

"H.Merijn Brand" <h.m.brand@xs4all.nl> writes:

> On Tue, 18 Dec 2007 01:47:53 -0800, Junio C Hamano <gitster@pobox.com> wrote:
> ...
>> Merijn, discarding the earlier patch I did to configure it out for
>> HP-UX, does the following patch based on Andreas's idea work for you?
>
> Probably not:
>
> HP-UX 10.20, 11.00, 11.11, 11.23/PA, and 11.23/IPF all have:
>
> /usr/include 103 > grep -r POSIX_VERSION *
> sys/unistd.h:#    define _POSIX_VERSION _POSIX1_VERSION_88
> sys/unistd.h:#      define _POSIX_VERSION       _POSIX1_VERSION_90
> sys/unistd.h:#      define _POSIX_VERSION       _POSIX1_VERSION_93
> sys/unistd.h:#  define _SC_1_VERSION_88    7     /* _POSIX_VERSION: Date of POSIX.1-1988 */
> sys/unistd.h:#  define _SC_1_VERSION_90   102 /* _POSIX_VERSION: Date of POSIX.1-1990 */
> sys/unistd.h:#  define _SC_1_VERSION_93   103 /* _POSIX_VERSION: Date of POSIX.1b-1993 */
> sys/unistd.h:#  if (_POSIX_VERSION == _POSIX1_VERSION_88)
> sys/unistd.h:#    if (_POSIX_VERSION == _POSIX1_VERSION_90)
>
> and the two 11.23 do have select.h

Does that prove anything?  unistd.h seem to define _POSIX_VERSION to
various values but we do not see surrounding "#ifdef WE_DO_NOT_KNOW"
from the grep output above unfortunately.

If the folllowing actually works I think that is the cleanest fix for
this issue (note that I added defined(_POSIX_VERSION) there just to be
safe if it is not defined at all).

 git-compat-util.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/git-compat-util.h b/git-compat-util.h
index 79eb10e..68a580f 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -68,7 +68,9 @@
 #include <sys/poll.h>
 #include <sys/socket.h>
 #include <sys/ioctl.h>
+#if defined(_POSIX_VERSION) && _POSIX_VERSION >= 200112L
 #include <sys/select.h>
+#endif
 #include <assert.h>
 #include <regex.h>
 #include <netinet/in.h>