Error out on unsupported configurations

diff --git a/source/Irrlicht/CMakeLists.txt b/source/Irrlicht/CMakeLists.txt
index b78410c9ee8846e8c07a328a2361e26e84a3ff6b..4b3fa21b68590cd0d31bb0cc1dd5db3f9a8a0b8a 100644 (file)
--- a/source/Irrlicht/CMakeLists.txt
+++ b/source/Irrlicht/CMakeLists.txt
@@ -86,8 +86,7 @@ if(WIN32)
 elseif(IOS)
        add_definitions(-D_IRR_IOS_PLATFORM_ -D_IRR_COMPILE_WITH_IOS_BUILTIN_MAIN_)
        if(USE_SDL2)
-               message(WARNING "SDL2 backend is not supported on iOS")
-               set(USE_SDL2 FALSE)
+               message(SEND_ERROR "SDL2 backend is not supported on iOS")
        endif()
        set(DEVICE "IOS")
 elseif(OSX)
@@ -96,8 +95,7 @@ elseif(OSX)
 elseif(ANDROID)
        add_definitions(-D_IRR_ANDROID_PLATFORM_ -D_IRR_COMPILE_ANDROID_ASSET_READER_)
        if(USE_SDL2)
-               message(WARNING "SDL2 backend is not supported on Android")
-               set(USE_SDL2 FALSE)
+               message(SEND_ERROR "SDL2 backend is not supported on Android")
        endif()
        set(DEVICE "Android")
 elseif(EMSCRIPTEN)