[CMake] undefined reference to 'pthread_create'

[Aaron Boxer]

Thanks, guys!!!! This is working now.

Cheers,
Aaron

On Thu, Feb 4, 2016 at 1:05 PM, J Decker <d3ck0r at gmail.com> wrote:

> On Thu, Feb 4, 2016 at 9:55 AM, Aaron Boxer <boxerab at gmail.com> wrote:
> > Thanks. So, even though threading is part of the standard, I still need
> to
> > link to pthreads library ?
>
> Yes; sounds more like an issue for GCC :)   I mean you don't have to
> tell it to link against c library or c++ runtime libraries... and it
> IS pthread specific so it's not like there's going to be some
> alternative provider for such services.
>
> using MinGW under linux to get a windows output it links automatically
> to a 'winpthreads.dll' which then becomes a runtime requirement... so
> it's not impossible for the compiler suite to do.
>
>
> >
> > On Thu, Feb 4, 2016 at 11:53 AM, rpelapur at archlinux.info
> > <rpelapur at archlinux.info> wrote:
> >>
> >> I believe that doesn't have anything to do with C11 flags. You are just
> >> missing the link to the pthread library. I could be wrong.
> >>
> >> Try and add this to your cmake file:
> >>
> >> find_package (Threads)
> >>
> >> target_link_libraries (myexecutable/lib ${CMAKE_THREAD_LIBS_INIT})
> >>
> >>
> >>
> >> Sent from my iPhone
> >>
> >> On Feb 4, 2016, at 10:42 AM, Aaron Boxer <boxerab at gmail.com> wrote:
> >>
> >> Hello,
> >> I have a cmake project that uses C++11 threads.
> >> I have added the lines
> >>
> >> set (CMAKE_CXX_STANDARD 14)
> >> set(CMAKE_CXX_STANDARD_REQUIRED ON)
> >>
> >>
> >> CMAKE version is 3.2.2, running on Ubuntu.
> >>
> >> When I try to build, I get the error
> >>
> >> undefined reference to `pthread_create`
> >>
> >> Any ideas on how to fix this?
> >>
> >> Thanks!
> >> Aaron
> >>
> >> --
> >>
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