CMake: try fixing detection of pthread_timedjoin_np

Author: CarterLi

CMakeLists.txt

@@ -1210,11 +1210,13 @@ if(NOT WIN32)
     if(HAVE_WORDEXP)
         target_compile_definitions(libfastfetch PRIVATE FF_HAVE_WORDEXP=1)
     endif()
-    if(ENABLE_THREADS)
+    if(ENABLE_THREADS AND CMAKE_USE_PTHREADS_INIT)
         CHECK_INCLUDE_FILE("pthread_np.h" HAVE_PTHREAD_NP)
         if(HAVE_PTHREAD_NP)
             target_compile_definitions(libfastfetch PRIVATE FF_HAVE_PTHREAD_NP=1)
+            set(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES} pthread_np.h)
         endif()
+        set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} Threads::Threads)
         check_function_exists("pthread_timedjoin_np" HAVE_TIMEDJOIN_NP)
         if(HAVE_TIMEDJOIN_NP)
             target_compile_definitions(libfastfetch PRIVATE FF_HAVE_TIMEDJOIN_NP=1)