Merge pull request #85 from sudden6/master

Pulseaudio backend also needs pthreads

CMakeLists.txt

@@ -44,7 +44,8 @@ elseif (UNIX AND NOT APPLE)
     if (AUDIO_LINUX_PULSE)
         find_library(PULSE_LIB pulse)
         find_library(PULSESIMPLE_LIB pulse-simple)
-        list(APPEND LINKLIBS ${PULSE_LIB} ${PULSESIMPLE_LIB})
+        find_package(Threads REQUIRED CMAKE_THREAD_PREFER_PTHREAD)
+        list(APPEND LINKLIBS ${PULSE_LIB} ${PULSESIMPLE_LIB} ${CMAKE_THREAD_LIBS_INIT})
         add_definitions(-D__LINUX_PULSE__)
         message(STATUS "Using Linux PulseAudio")
     endif (AUDIO_LINUX_PULSE)