cmake HAVE_FLAG_SANITIZE_THREAD_NEEDS_PIC_PIE examples

maidsafe-archive/MaidSafe cmake_modules/find_tsan.cmake :46 

check_c_compiler_flag("-fsanitize=thread" HAVE_FLAG_SANITIZE_THREAD_NEEDS_PIC_PIE)

maidsafe-archive/MaidSafe cmake_modules/find_tsan.cmake :58 

elseif(HAVE_FLAG_SANITIZE_THREAD_NEEDS_PIC_PIE)