How do I force cmake to include “-pthread” option during compilation?

Question

I know there is something like find_package(Threads) but it doesn\'t seem to make a difference (at least by itself). For now I\'m using SET(CMAKE_C_FLAGS

Answer 1

How about the following:

set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
find_package(Threads REQUIRED)
if(CMAKE_USE_PTHREADS_INIT)
    set(CMAKE_C_FLAGS ${CMAKE_C_FLAGS} "-pthread")
elseif(...)
    ...
endif()
add_executable( test test.cpp )
target_link_libraries( test ${CMAKE_THREAD_LIBS_INIT} )