refactor(cmake): split CMakeLists into modules (#1587)

cmake/compile_definitions/macos.cmake

@@ -0,0 +1,48 @@
+# macos specific compile definitions
+
+add_compile_definitions(SUNSHINE_PLATFORM="macos")
+
+link_directories(/opt/local/lib)
+link_directories(/usr/local/lib)
+ADD_DEFINITIONS(-DBOOST_LOG_DYN_LINK)
+
+list(APPEND SUNSHINE_EXTERNAL_LIBRARIES
+        ${APP_SERVICES_LIBRARY}
+        ${AV_FOUNDATION_LIBRARY}
+        ${CORE_MEDIA_LIBRARY}
+        ${CORE_VIDEO_LIBRARY}
+        ${VIDEO_TOOLBOX_LIBRARY}
+        ${FOUNDATION_LIBRARY})
+
+set(PLATFORM_INCLUDE_DIRS
+        ${Boost_INCLUDE_DIR})
+
+set(APPLE_PLIST_FILE ${SUNSHINE_SOURCE_ASSETS_DIR}/macos/assets/Info.plist)
+
+# todo - tray is not working on macos
+set(SUNSHINE_TRAY 0)
+
+set(PLATFORM_TARGET_FILES
+        src/platform/macos/av_audio.h
+        src/platform/macos/av_audio.m
+        src/platform/macos/av_img_t.h
+        src/platform/macos/av_video.h
+        src/platform/macos/av_video.m
+        src/platform/macos/display.mm
+        src/platform/macos/input.cpp
+        src/platform/macos/microphone.mm
+        src/platform/macos/misc.mm
+        src/platform/macos/misc.h
+        src/platform/macos/nv12_zero_device.cpp
+        src/platform/macos/nv12_zero_device.h
+        src/platform/macos/publish.cpp
+        third-party/TPCircularBuffer/TPCircularBuffer.c
+        third-party/TPCircularBuffer/TPCircularBuffer.h
+        ${APPLE_PLIST_FILE})
+
+if(SUNSHINE_ENABLE_TRAY)
+    list(APPEND SUNSHINE_EXTERNAL_LIBRARIES
+            ${COCOA})
+    list(APPEND PLATFORM_TARGET_FILES
+            third-party/tray/tray_darwin.m)
+endif()