How to set linker flags for OpenMP in CMake's try_compile function

Question

I would like to verify that the current compiler can build with openmp support. The application has do deploy across a wide variety of unix systems, some of which might hav

Answer 1

OpenMP support has been improved in CMake 3.9+

CMakeLists.txt

cmake_minimum_required(VERSION 3.9)
project(openmp_test) # you can change the project name

find_package(OpenMP)

add_executable(openmp_para_test main.cpp) # you can change the excutable name

if(OpenMP_CXX_FOUND)
    target_link_libraries(openmp_para_test PUBLIC OpenMP::OpenMP_CXX)
endif()

This way will correctly set the library link line differently from the compile line if needed.

Source.