3DS library containing utilities for hacking around in usermode.
Download a prebuilt version, use as a CMake dependency, or build manually:
cmake -B Build -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE="$DEVKITPRO/cmake/3DS.cmake" -DCMAKE_BUILD_TYPE=Release
cmake --build Build --config Release
cmake --install Build --prefix Build/Release