Xorg vs gettimeofday() and clock_gettime()
John E Hein
jhein at timing.com
Thu Feb 28 21:48:53 UTC 2008
Jung-uk Kim wrote at 16:07 -0500 on Feb 28, 2008:
> So this test was introduced in the following commit:
>
> http://lists.freedesktop.org/archives/xorg-commit/2006-November/009390.html
>
> Google found me this:
>
> http://www.opengroup.org/austin/mailarchives/ag-review/msg00489.html
>
> 'The recently-approved 1003.1j-2000 adds CLOCK_MONOTONIC to the list.'
>
> I think 1003.1b-1993 added clock_gettime(2) and configure.ac tests
> bogus spec.
I suspect the autoconf test was probably written against the linux time.h which
specifies _POSIX_C_SOURCE 199309 for all the CLOCK_* constants.
Your quote seems to indicate that is wrong (which makes sense to me
since I don't recall the CLOCK_* values around back to 1993). But I
have not done the work to dig into the spec.
If someone verifies that to be the case, please submit a PR to xorg
to fix their autoconf check.
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