ci: fix linux tray (#1650)

cmake/compile_definitions/linux.cmake

@@ -156,13 +156,20 @@ endif()
 # tray icon
 if(${SUNSHINE_ENABLE_TRAY})
     pkg_check_modules(APPINDICATOR appindicator3-0.1)
-    if(NOT APPINDICATOR_FOUND)
+    if(APPINDICATOR_FOUND)
+        list(APPEND SUNSHINE_DEFINITIONS TRAY_LEGACY_APPINDICATOR=1)
+    else()
         pkg_check_modules(APPINDICATOR ayatana-appindicator3-0.1)
+        if(APPINDICATOR_FOUND)
+            list(APPEND SUNSHINE_DEFINITIONS TRAY_AYATANA_APPINDICATOR=1)
+        endif ()
     endif()
     pkg_check_modules(LIBNOTIFY libnotify)
     if(NOT APPINDICATOR_FOUND OR NOT LIBNOTIFY_FOUND)
-        message(WARNING "Missing appindicator, disabling tray icon")
         set(SUNSHINE_TRAY 0)
+        message(WARNING "Missing appindicator or libnotify, disabling tray icon")
+        message(STATUS "APPINDICATOR_FOUND: ${APPINDICATOR_FOUND}")
+        message(STATUS "LIBNOTIFY_FOUND: ${LIBNOTIFY_FOUND}")
     else()
         include_directories(SYSTEM ${APPINDICATOR_INCLUDE_DIRS} ${LIBNOTIFY_INCLUDE_DIRS})
         link_directories(${APPINDICATOR_LIBRARY_DIRS} ${LIBNOTIFY_LIBRARY_DIRS})
@@ -172,6 +179,11 @@ if(${SUNSHINE_ENABLE_TRAY})
     endif()
 else()
     set(SUNSHINE_TRAY 0)
+    message(STATUS "Tray icon disabled")
+endif()
+
+if (${SUNSHINE_TRAY} EQUAL 0 AND SUNSHINE_REQUIRE_TRAY)
+    message(FATAL_ERROR "Tray icon is required")
 endif()
 
 list(APPEND PLATFORM_TARGET_FILES