Platform: even more doc++.

src/Magnum/Platform/NaClApplication.h

@@ -111,7 +111,9 @@ You can then open `MyApplication` through your webserver in Chrome (e.g.
 
 ## General usage
 
-In CMake you need to request `%NaClApplication` component, add
+For CMake you need to copy `FindOpenGLES2.cmake` from `modules/` directory in
+%Magnum source to `modules/` dir in your project (so it is able to find OpenGL
+ES). Request `%NaClApplication` component, add
 `${MAGNUM_NACLAPPLICATION_INCLUDE_DIRS}` to include path and link to
 `${MAGNUM_NACLAPPLICATION_LIBRARIES}`. If no other application is requested,
 you can also use generic `${MAGNUM_APPLICATION_INCLUDE_DIRS}` and

src/Magnum/Platform/Sdl2Application.h

@@ -114,8 +114,9 @@ e.g. `http://localhost/emscripten/MyApplication.html`).
 ## General usage
 
 For CMake you need to copy `FindSDL2.cmake` from `modules/` directory in
-%Magnum source to `modules/` dir in your project (so it is able to find SDL2),
-request `%Sdl2Application` component, add `${MAGNUM_SDL2APPLICATION_INCLUDE_DIRS}`
+%Magnum source to `modules/` dir in your project (so it is able to find SDL2).
+In case of Emscripten you need also `FindOpenGLES2.cmake`. Request
+`%Sdl2Application` component, add `${MAGNUM_SDL2APPLICATION_INCLUDE_DIRS}`
 to include path and link to `${MAGNUM_SDL2APPLICATION_LIBRARIES}`. If no other
 application is requested, you can also use generic `${MAGNUM_APPLICATION_INCLUDE_DIRS}`
 and `${MAGNUM_APPLICATION_LIBRARIES}` aliases to simplify porting. See

src/Magnum/Platform/WindowlessGlxApplication.h

@@ -132,7 +132,8 @@ class WindowlessGlxApplication {
          * @brief Execute application
          * @return Value for returning from `main()`
          *
-         * See @ref MAGNUM_WINDOWLESSAPPLICATION_MAIN() for usage information.
+         * See @ref MAGNUM_WINDOWLESSGLXAPPLICATION_MAIN() for usage
+         * information.
          */
         virtual int exec() = 0;