cmake: make libxi and libxtst a requirement with autotype enabled

src/autotype/CMakeLists.txt

@@ -1,26 +1,14 @@
 if(WITH_XC_AUTOTYPE)
     if(UNIX AND NOT APPLE AND NOT HAIKU)
-        find_package(X11)
-        find_package(Qt5X11Extras 5.2)
+        find_package(X11 REQUIRED COMPONENTS Xi XTest)
+        find_package(Qt5X11Extras 5.2 REQUIRED)
         if(PRINT_SUMMARY)
             add_feature_info(libXi X11_Xi_FOUND "The X11 Xi Protocol library is required for auto-type")
             add_feature_info(libXtst X11_XTest_FOUND "The X11 XTEST Protocol library is required for auto-type")
             add_feature_info(Qt5X11Extras Qt5X11Extras_FOUND "The Qt5X11Extras library is required for auto-type")
         endif()
 
-        # an error will be emitted by find_package above if X11 (or Qt5X11Extras) dev files were not found.
-        # X11 possibly is installed and found while X11_Xi and/or X11_XTest are not, so we emit a warning.
-        if(NOT X11_Xi_FOUND)
-            message(WARNING "The X11 Xi Protocol library is required for auto-type (try libxi-dev package)")
-        endif()
-
-        if(NOT X11_XTest_FOUND)
-            message(WARNING "The X11 XTEST Protocol library is required for auto-type (try libxtst-dev package)")
-        endif()
-
-        if(X11_FOUND AND X11_Xi_FOUND AND X11_XTest_FOUND AND Qt5X11Extras_FOUND)
-            add_subdirectory(xcb)
-        endif()
+        add_subdirectory(xcb)
     elseif(APPLE)
         add_subdirectory(mac)
     elseif(WIN32)