Here is my CMake file (slightly modified from a sample application):
cmake_minimum_required(VERSION 3.2)
set(CMAKE_TOOLCHAIN_FILE /opt/devkitpro/wut/share/wut.toolchain.cmake)
project(helloworld C)
include("/opt/devkitpro/cmake/WiiU.cmake" REQUIRED) # used to be...
@K3Nv2 I got some cheapies at wallys, that are pretty good, already have lost a few expensive ones (one falls out and gone, can't find) while cutting grass so bought some cheap ones, and of course never lose these cheap ones. (Cheap meaning only $35, compared to air buds which I only have 1 of 2 now)