Re: [patch #8186] ax_pthread adds -pthread when it should not on OSX when compiling with clang

On 09/26/2013 06:31 AM, Daniel Richard G. wrote:
> On Wed, 2013 Sep 25 18:21+1000, Peter Johansson wrote:
>> Sorry if I was too brief. My thought was that perhaps it'd be better
>> to have feature test, i.e., actually test if the compiler runs with
>> '-pthread', and then the mentioned option would be useful on Clang.
> The problem appears to be that Clang blithely accepts options it doesn't
> recognize, printing a warning at most. Without some additional flag to
> disable this behavior, there's no good way to implement a feature test.

My understanding is that's exactly what gnulib folks are doing when they add

'-Werror -Wunknown-warning-option' to CFLAGS. An extra complexity is 
that these flags won't work with every compiler so they have a feature 
test to check if the option is accepted by compiler.

Cheers,
Peter

>
> --Daniel
>
>


-- 
Peter Johansson