cmake: use glad glx/egl/wgl only when sdl2 is not found

CMakeLists.txt

@@ -1471,17 +1471,16 @@ endif()
 
 if((USE_OPENGL OR USE_GLES2 OR USE_GLES) AND NOT LIBRETRO)
 	add_library(glad STATIC core/deps/glad/src/gl.c)
-	if(X11_FOUND)
-		target_sources(glad PRIVATE core/deps/glad/src/glx.c)
-	endif()
-	if(ANDROID OR USE_GLES2 OR USE_GLES)
-		target_sources(glad PRIVATE core/deps/glad/src/egl.c)
-	endif()
-	if(WIN32)
-		target_sources(glad PRIVATE core/deps/glad/src/wgl.c)
-	endif()
-	if(NINTENDO_SWITCH)
-		target_compile_definitions(glad PRIVATE EGL_NO_PLATFORM_SPECIFIC_TYPES)
+	if(NOT SDL2_FOUND)
+		if(X11_FOUND)
+			target_sources(glad PRIVATE core/deps/glad/src/glx.c)
+		endif()
+		if(ANDROID OR USE_GLES2 OR USE_GLES)
+			target_sources(glad PRIVATE core/deps/glad/src/egl.c)
+		endif()
+		if(WIN32)
+			target_sources(glad PRIVATE core/deps/glad/src/wgl.c)
+		endif()
 	endif()
 	target_include_directories(glad PUBLIC core/deps/glad/include)
 	target_link_libraries(${PROJECT_NAME} PRIVATE glad)