ENH: meson: implement BLAS/LAPACK auto-detection and many CI jobs

.github/workflows/linux_meson.yml

@@ -1,4 +1,36 @@
-name: Test Meson build (Linux)
+name: BLAS tests (Linux)
+
+# This file is meant for testing different BLAS/LAPACK flavors and build
+# options on Linux. All other yml files for Linux will only test without BLAS
+# (mostly because that's easier and faster to build) or with the same 64-bit
+# OpenBLAS build that is used in the wheel jobs.
+#
+# Jobs and their purpose:
+#
+#   - openblas32_stable_nightly:
+#         Uses the 32-bit OpenBLAS builds, both the latest stable release
+#         and a nightly build.
+#   - openblas_no_pkgconfig_fedora:
+#         Test OpenBLAS on Fedora. Fedora doesn't ship .pc files for OpenBLAS,
+#         hence this exercises the "system dependency" detection method.
+#   - flexiblas_fedora:
+#         Tests FlexiBLAS (the default on Fedora for its own packages), via
+#         pkg-config. FlexiBLAS allows runtime switching of BLAS/LAPACK
+#         libraries, which is a useful capability (not tested in this job).
+#   - openblas_cmake:
+#         Tests whether OpenBLAS LP64 is detected correctly when only CMake
+#         and not pkg-config is installed.
+#   - netlib:
+#         Installs vanilla blas/lapack, which is the last option tried in
+#         auto-detection.
+#   - mkl:
+#         Tests MKL installed from PyPI (because easiest/fastest, if broken) in
+#         3 ways: both LP64 and ILP64 via pkg-config, and then using the
+#         Single Dynamic Library (SDL, or `libmkl_rt`).
+#   - blis:
+#         Simple test for LP64 via pkg-config
+#   - atlas:
+#         Simple test for LP64 via pkg-config
 
 on:
   pull_request:
@@ -71,3 +103,253 @@ jobs:
         export NPY_RUN_MYPY_IN_TESTSUITE=1
         pip install pytest pytest-xdist hypothesis typing_extensions
         spin test -j auto
+
+
+  openblas_no_pkgconfig_fedora:
+    if: "github.repository == 'numpy/numpy'"
+    runs-on: ubuntu-latest
+    container: fedora:39
+    name: "OpenBLAS (Fedora, no pkg-config, LP64/ILP64)"
+    steps:
+    - name: Install system dependencies
+      run: |
+        dnf install git gcc-gfortran g++ python3-devel openblas-devel -y
+
+    - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4.1.0
+      with:
+        submodules: recursive
+        fetch-depth: 0
+
+    - name: Install dependencies
+      run: |
+        pip install -r build_requirements.txt
+        pip install pytest hypothesis typing_extensions
+
+    - name: Build (LP64)
+      run: spin build -- -Dblas=openblas -Dlapack=openblas -Ddisable-optimization=true
+
+    - name: Test
+      run: spin test -- numpy/linalg
+
+    - name: Build (ILP64)
+      run: |
+        rm -rf build
+        spin build -- -Duse-ilp64=true -Ddisable-optimization=true
+
+    - name: Test
+      run: spin test -- numpy/linalg
+
+
+  flexiblas_fedora:
+    if: "github.repository == 'numpy/numpy'"
+    runs-on: ubuntu-latest
+    container: fedora:39
+    name: "FlexiBLAS (LP64, ILP64 on Fedora)"
+    steps:
+    - name: Install system dependencies
+      run: |
+        dnf install git gcc-gfortran g++ python3-devel flexiblas-devel -y
+
+    - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4.1.0
+      with:
+        submodules: recursive
+        fetch-depth: 0
+
+    - name: Install dependencies
+      run: |
+        pip install -r build_requirements.txt
+        pip install pytest hypothesis typing_extensions
+
+    - name: Build
+      run: spin build -- -Ddisable-optimization=true
+
+    - name: Test
+      run: spin test -- numpy/linalg
+
+    - name: Build (ILP64)
+      run: |
+        rm -rf build
+        spin build -- -Ddisable-optimization=true -Duse-ilp64=true
+
+    - name: Test (ILP64)
+      run: spin test -- numpy/linalg
+
+
+  openblas_cmake:
+    if: "github.repository == 'numpy/numpy'"
+    runs-on: ubuntu-latest
+    name: "OpenBLAS with CMake"
+    steps:
+    - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4.1.0
+      with:
+        submodules: recursive
+        fetch-depth: 0
+    - uses: actions/setup-python@61a6322f88396a6271a6ee3565807d608ecaddd1 # v4.7.0
+      with:
+        python-version: '3.11'
+
+    - name: Install dependencies
+      run: |
+        pip install -r build_requirements.txt
+        pip install pytest pytest-xdist hypothesis typing_extensions
+        sudo apt-get install libopenblas-dev cmake
+        sudo apt-get remove pkg-config
+
+    - name: Build
+      run: spin build -- -Ddisable-optimization=true
+
+    - name: Test
+      run: spin test -j auto -- numpy/linalg
+
+
+  netlib:
+    if: "github.repository == 'numpy/numpy'"
+    runs-on: ubuntu-latest
+    name: "Netlib BLAS/LAPACK"
+    steps:
+    - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4.1.0
+      with:
+        submodules: recursive
+        fetch-depth: 0
+    - uses: actions/setup-python@61a6322f88396a6271a6ee3565807d608ecaddd1 # v4.7.0
+      with:
+        python-version: '3.11'
+
+    - name: Install dependencies
+      run: |
+        pip install -r build_requirements.txt
+        sudo apt-get install liblapack-dev pkg-config
+
+    - name: Build
+      run: |
+        spin build -- -Ddisable-optimization=true
+
+    - name: Test
+      run: |
+        pip install pytest pytest-xdist hypothesis typing_extensions
+        spin test -j auto -- numpy/linalg
+
+
+  mkl:
+    if: "github.repository == 'numpy/numpy'"
+    runs-on: ubuntu-latest
+    name: "MKL (LP64, ILP64, SDL)"
+    steps:
+    - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4.1.0
+      with:
+        submodules: recursive
+        fetch-depth: 0
+    - uses: actions/setup-python@61a6322f88396a6271a6ee3565807d608ecaddd1 # v4.7.0
+      with:
+        python-version: '3.11'
+
+    - name: Install dependencies
+      run: |
+        pip install -r build_requirements.txt
+        pip install pytest pytest-xdist hypothesis typing_extensions
+        pip install mkl mkl-devel
+
+    - name: Repair MKL pkg-config files and symlinks
+      run: |
+        # MKL 2023.2 works when installed from conda-forge (except for `-iomp`
+        # and `-tbb` pkg-config files), Spack, or with the standalone Intel
+        # installer. The standalone installer is the worst option, since it's
+        # large and clumsy to install and requires running a setvars.sh script
+        # before things work. The PyPI MKL packages are broken and need the
+        # fixes in this step. For details, see
+        # https://github.com/conda-forge/intel_repack-feedstock/issues/34
+        cd $Python3_ROOT_DIR/lib/pkgconfig
+        sed -i 's/\/intel64//g' mkl*.pc
+        # add the expected .so -> .so.2 symlinks to fix linking
+        cd ..
+        for i in $( ls libmkl*.so.2 ); do ln -s $i ${i%.*}; done
+
+    - name: Build with defaults (LP64)
+      run: |
+        pkg-config --libs mkl-dynamic-lp64-seq  # check link flags
+        spin build -- -Ddisable-optimization=true
+
+    - name: Test
+      run: spin test -- numpy/linalg
+
+    - name: Build with ILP64
+      run: |
+        git clean -xdf > /dev/null
+        pkg-config --libs mkl-dynamic-ilp64-seq
+        spin build -- -Duse-ilp64=true -Ddisable-optimization=true
+
+    - name: Test
+      run: spin test -- numpy/linalg
+
+    - name: Build without pkg-config (default options, SDL)
+      run: |
+        git clean -xdf > /dev/null
+        pushd $Python3_ROOT_DIR/lib/pkgconfig
+        rm mkl*.pc
+        popd
+        export MKLROOT=$Python3_ROOT_DIR
+        spin build -- -Ddisable-optimization=true
+
+    - name: Test
+      run: spin test -- numpy/linalg
+
+  blis:
+    if: "github.repository == 'numpy/numpy'"
+    runs-on: ubuntu-latest
+    name: "BLIS"
+    steps:
+    - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4.1.0
+      with:
+        submodules: recursive
+        fetch-depth: 0
+    - uses: actions/setup-python@61a6322f88396a6271a6ee3565807d608ecaddd1 # v4.7.0
+      with:
+        python-version: '3.11'
+
+    - name: Install dependencies
+      run: |
+        pip install -r build_requirements.txt
+        pip install pytest pytest-xdist hypothesis typing_extensions
+        sudo apt-get install libblis-dev libopenblas-dev pkg-config
+
+    - name: Add BLIS pkg-config file
+      run: |
+        # Needed because blis.pc missing in Debian:
+        # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=989076
+        # The alternative here would be to use another distro or Miniforge
+        sudo cp tools/ci/_blis_debian.pc /usr/lib/x86_64-linux-gnu/pkgconfig/blis.pc
+        # Check if the patch works:
+        pkg-config --libs blis
+        pkg-config --cflags blis
+
+    - name: Build
+      run: spin build -- -Dblas=blis -Ddisable-optimization=true
+
+    - name: Test
+      run: spin test -- numpy/linalg
+
+  atlas:
+    if: "github.repository == 'numpy/numpy'"
+    runs-on: ubuntu-latest
+    name: "ATLAS"
+    steps:
+    - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4.1.0
+      with:
+        submodules: recursive
+        fetch-depth: 0
+    - uses: actions/setup-python@61a6322f88396a6271a6ee3565807d608ecaddd1 # v4.7.0
+      with:
+        python-version: '3.11'
+
+    - name: Install dependencies
+      run: |
+        pip install -r build_requirements.txt
+        pip install pytest pytest-xdist hypothesis typing_extensions
+        sudo apt-get install libatlas-base-dev pkg-config
+
+    - name: Build
+      run: spin build -- -Dblas=blas-atlas -Dlapack=lapack-atlas -Ddisable-optimization=true
+
+    - name: Test
+      run: spin test -- numpy/linalg
+

.github/workflows/linux_musl.yml

@@ -48,20 +48,22 @@ jobs:
 
         ln -s /usr/local/bin/python3.10 /usr/local/bin/python
 
-    - name: test musllinux_x86_64
+    - name: test-musllinux_x86_64
+      env:
+        PKG_CONFIG_PATH: ${{ github.workspace }}/.openblas
       run: |
         python -m venv test_env
         source test_env/bin/activate
 
-        # required for figuring out the system tags in openblas_support
-        pip install packaging       
-
-        # install openblas by co-opting the CIBW setup script
-        RUNNER_OS=Linux sh tools/wheels/cibw_before_build.sh .
+        pip install scipy-openblas64
 
-        pip install -r build_requirements.txt
-        pip install pytest pytest-xdist hypothesis typing_extensions
+        pip install -r build_requirements.txt -r test_requirements.txt
 
         # use meson to build and test 
-        spin build
+        spin build --with-scipy-openblas=64 -- -Duse-ilp64=true
         spin test -j auto
+
+    - name: Meson Log
+      shell: bash
+      run: |
+        cat build/meson-logs/meson-log.txt

.github/workflows/macos.yml

@@ -100,7 +100,7 @@ jobs:
         ccache -s
 
   accelerate:
-    name: Accelerate ILP64
+    name: Accelerate (LP64, ILP64)
     if: "github.repository == 'numpy/numpy'"
     runs-on: macos-13
     steps:
@@ -122,14 +122,15 @@ jobs:
         pip install -r build_requirements.txt
         pip install pytest pytest-xdist hypothesis
 
-    - name: Build NumPy against Accelerate (ILP64)
-      run: |
-        spin build -- -Dblas=accelerate -Dlapack=accelerate -Duse-ilp64=true
+    - name: Build against Accelerate (LP64)
+      run: spin build -- -Ddisable-optimization=true
 
-    - name: Show meson-log.txt
-      if: always()
-      run: 'cat build/meson-logs/meson-log.txt'
+    - name: Test (linalg only)
+      run: spin test -j2 -- numpy/linalg
 
-    - name: Test
+    - name: Build NumPy against Accelerate (ILP64)
       run: |
-        spin test -j2
+        spin build -- -Duse-ilp64=true
+
+    - name: Test (fast tests)
+      run: spin test -j2