Cygwin sysconf.cc

Brian Inglis Brian.Inglis@SystematicSw.ab.ca
Wed Mar 2 19:45:12 GMT 2022


On 2022-03-02 01:25, Corinna Vinschen wrote:
> Hi Brian,
> 
> On Mar  1 13:20, Brian Inglis wrote:
>> Interested in a patch for sysconf.cc to return:
>>
>>       _SC_TZNAME_MAX => TZNAME_MAX and
>> _SC_MONOTONIC_CLOCK => _POSIX_MONOTONIC_CLOCK?
> 
> not sure I understand the question.  Both are already implemented.
> 
>    $ getconf -a | egrep '(TZNAME_MAX|MONOTONIC_CLOCK)'
>    _POSIX_TZNAME_MAX                   6
>    TZNAME_MAX                          undefined
>    _POSIX_MONOTONIC_CLOCK              200809

Sorry, must have been looking at very *OLD* version online, as 
_SC_CLOCK_SELECTION and _SC_MONOTONIC_CLOCK were not defined.

Why did you not define _SC_TZNAME_MAX => _POSIX_TZNAME_MAX when you 
tweaked it?

My rereading of the man and POSIX pages leads me to believe that for all 
known values of _SC_... the entries now showing {nsup, {c:0}} should be 
{cons, {c:-1L}} supported but undefined, and only out of range values 
for the parameter should be treated as {nsup, {c:-1L}}?

-- 
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

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