CUDA

Fix cmake for non top level inclusion #150

	name: CUDA

	on:
	push:
	branches: [main]
	pull_request:
	paths:
	- '.github/workflows/cuda.yml'
	- 'cmake/**'
	- 'src/**'
	- 'tests/**'
	- 'python/**'
	- 'CMakeLists.txt'

	env:
	CTEST_OUTPUT_ON_FAILURE: ON
	CTEST_PARALLEL_LEVEL: 2

	jobs:
	Build:
	name: CUDA (${{ matrix.config }})
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	config:
	- Debug
	- Release
	steps:
	- name: Checkout repository
	uses: actions/checkout@v4.0.0
	with:
	fetch-depth: 10

	- name: Dependencies
	run: \|
	sudo apt-get install ccache
	echo 'CACHE_PATH=~/.cache/ccache' >> "$GITHUB_ENV"

	- name: cuda-toolkit
	uses: Jimver/cuda-toolkit@v0.2.21
	with:
	sub-packages: '["nvcc"]'
	method: 'network'

	- name: Get number of CPU cores
	uses: SimenB/github-actions-cpu-cores@v2.0.0
	id: cpu-cores

	- name: Cache Build
	id: cache-build
	uses: actions/cache@v4
	with:
	path: ${{ env.CACHE_PATH }}
	key: ${{ runner.os }}-${{ matrix.config }}-cache

	- name: Prepare ccache
	run: \|
	ccache --max-size=1.0G
	ccache -V && ccache --show-config
	ccache --show-stats && ccache --zero-stats

	- name: Configure
	run: \|
	mkdir -p build
	cd build
	cmake .. \
	-DIPC_TOOLKIT_WITH_CUDA=ON \
	-DSCALABLE_CCD_CUDA_ARCHITECTURES=75 \
	-DIPC_TOOLKIT_BUILD_TESTS=ON \
	-DIPC_TOOLKIT_BUILD_PYTHON=ON \
	-DCMAKE_BUILD_TYPE=${{ matrix.config }}

	- name: Build
	run: \|
	cmake --build build -j ${{ steps.cpu-cores.outputs.count }}
	ccache --show-stats

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