[cmake-developers] Checking for -pthread before -lpthread{s} in FindThreads.cmake

[Raphael Kubo da Costa]

Hello there,

I see that currently FindThreads.cmake checks for -lpthreads, -lpthread
and -lthread before trying to compile code with -pthread.

FreeBSD explicitly recommends using -pthread [1], and I guess the same
holds for at least gcc-based systems, where -pthread usually translates
into automatically passing -lpthread and any necessary definitions to
the compiler and the linker.

Is the current order of the checks intentional, or would a patch
changing the checks be accepted? Depending on the patch implementation,
this would probably fix CMake bug #7830 as a side-effect.

Cheers,
Raphael