Flycheck and OpenMP pragmas for GCC

Question

I'm using Flycheck with GCC as my checker for C. However, Flycheck gives warnings on OpenMP pragmas, regardless of whether they're correct or not! Is there any setting I can change to turn off these warnings?

Answer 1

As of Flycheck 0.21 you can now use the new option flycheck-gcc-openmp to enable OpenMP in GCC for C and C++.

To enable OpenMP globally, add the following to your init.el:

(setq-default flycheck-gcc-openmp t)

I'd recommend to set this variable with File Variables or Directory Variables, for each file or project where you'd like to use OpenMP.

Disclaimer: I'm the Flycheck maintainer.