RtAudio stuff needs threads on non mac/win

Signed-off-by: falkTX <falktx@falktx.com>

cmake/DPF-plugin.cmake

@@ -209,18 +209,19 @@ function(dpf__build_jack NAME DGL_LIBRARY)
   if(APPLE OR WIN32)
     target_compile_definitions("${NAME}" PUBLIC "HAVE_RTAUDIO")
   else()
+    find_package(Threads)
     pkg_check_modules(ALSA "alsa")
     pkg_check_modules(PULSEAUDIO "libpulse-simple")
     if(ALSA_FOUND)
       target_compile_definitions("${NAME}" PUBLIC "HAVE_ALSA")
       target_include_directories("${NAME}-jack" PRIVATE ${ALSA_INCLUDE_DIRS})
-      target_link_libraries("${NAME}-jack" PRIVATE ${ALSA_LIBRARIES})
+      target_link_libraries("${NAME}-jack" PRIVATE ${ALSA_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
       dpf__target_link_directories("${NAME}-jack" ${ALSA_LIBRARY_DIRS})
     endif()
     if(PULSEAUDIO_FOUND)
       target_compile_definitions("${NAME}" PUBLIC "HAVE_PULSEAUDIO")
       target_include_directories("${NAME}-jack" PRIVATE ${PULSEAUDIO_INCLUDE_DIRS})
-      target_link_libraries("${NAME}-jack" PRIVATE ${PULSEAUDIO_LIBRARIES})
+      target_link_libraries("${NAME}-jack" PRIVATE ${PULSEAUDIO_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
       dpf__target_link_directories("${NAME}-jack" ${PULSEAUDIO_LIBRARY_DIRS})
     endif()
     if(ALSA_FOUND OR PULSEAUDIO_FOUND)