BUG: Return rank 0 for empty matrices in matrix_rank #1331

	name: Native ppc64le Linux Test

	on:
	pull_request:
	branches:
	- main
	- maintenance/**
	paths-ignore:
	- '**.pyi'
	- '**.md'
	- '**.rst'
	workflow_dispatch:

	permissions:
	contents: read

	concurrency:
	group: ${{ github.workflow }}-${{ github.head_ref \|\| github.run_id }}
	cancel-in-progress: true

	jobs:
	native_ppc64le:
	# This job runs only in the main NumPy repository.
	# It requires a native ppc64le GHA runner, which is not available on forks.
	# For more details, see: https://github.com/numpy/numpy/issues/29125
	if: github.repository == 'numpy/numpy'
	runs-on: ubuntu-24.04-ppc64le-p10

	strategy:
	fail-fast: false
	matrix:
	config:
	- name: "GCC"
	args: "-Dallow-noblas=false"
	- name: "clang"
	args: "-Dallow-noblas=false"

	name: "${{ matrix.config.name }}"
	steps:
	- uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
	with:
	submodules: recursive
	fetch-tags: true

	- name: Install dependencies
	run: \|
	sudo apt update
	sudo apt install -y python3.12 python3-pip python3-dev ninja-build gfortran \
	build-essential libopenblas-dev liblapack-dev pkg-config
	pip install --upgrade pip
	pip install -r requirements/build_requirements.txt -r requirements/test_requirements.txt
	echo "/home/runner/.local/bin" >> $GITHUB_PATH

	- name: Install clang
	if: matrix.config.name == 'clang'
	run: \|
	sudo apt install -y clang
	export CC=clang
	export CXX=clang++

	- name: Meson Build
	run: \|
	spin build -- ${{ matrix.config.args }}

	- name: Meson Log
	if: always()
	run: cat build/meson-logs/meson-log.txt

	- name: Run Tests
	run: \|
	spin test -- --timeout=60 --durations=10

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