Re: [PATCH] build: use -lrt for clock_gettime on glibc < 2.17

[Dirk-Jan C. Binnema <djcb.bulk@gmail.com>]

Hi Marcel,

marcel@holtmann.org writes:

> Hi Dirk-Jan,,
>
>> glibc before 2.17 (e.g., fedora 18) requires -lrt for clock_gettime.
>> AC_SEARCH_LIBS adds it to LIBS in that case
>> ---
>> configure.ac | 1 +
>> 1 file changed, 1 insertion(+)
>> 
>> diff --git a/configure.ac b/configure.ac
>> index 050d30d..403e323 100644
>> --- a/configure.ac
>> +++ b/configure.ac
>> @@ -40,6 +40,7 @@ AC_ARG_ENABLE(threads, AC_HELP_STRING([--enable-threads],
>> AC_CHECK_FUNC(signalfd, dummy=yes,
>> 			AC_MSG_ERROR(signalfd support is required))
>> 
>> +AC_SEARCH_LIBS(clock_gettime,rt)
>
> I do like this since this now it links everything with -lrt even if it is not needed.

Hmm, I suppose there's a missing 'not'...

Note, AC_SEARCH_LIBS tries without rt first, and only adds -lrt if
clock_gettime is not defined without it.

Or did you mean building parts of bluez without -lrt in the glibc < 2.17
case? If so, please see my next patch, which only uses -lrt (if needed)
for bluetoothd.

Cheers,
Dirk.


-- 
Dirk-Jan C. Binnema                  Helsinki, Finland
e:djcb@djcbsoftware.nl           w:www.djcbsoftware.nl
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