Move build system to meson-python

.github/workflows/build-with-clang.yml

@@ -15,6 +15,7 @@ jobs:
     strategy:
       matrix:
         python: ["3.10", "3.11", "3.12", "3.13"]
+        numpy_version: ["numpy'>=2'"]
 
     env:
       ONEAPI_ROOT: /opt/intel/oneapi
@@ -40,7 +41,6 @@ jobs:
       - name: Install Intel OneAPI
         run: |
           sudo apt-get install intel-oneapi-compiler-dpcpp-cpp
-          sudo apt-get install intel-oneapi-tbb
           sudo apt-get install intel-oneapi-mkl-devel
 
       - name: Setup Python
@@ -55,12 +55,9 @@ jobs:
           fetch-depth: 0
 
       - name: Install mkl-service dependencies
-        uses: BSFishy/pip-action@8f2d471d809dc20b6ada98c91910b6ae6243f318 # v1
-        with:
-          packages: |
-            cython
-            setuptools>=77
-            pytest
+        run: |
+          pip install meson-python cython cmake ninja mkl
+          pip install ${{ matrix.numpy_version }}
 
       - name: List oneAPI folder content
         run: ls ${{ env.ONEAPI_ROOT }}/compiler
@@ -71,9 +68,10 @@ jobs:
           echo "$CMPLR_ROOT"
           export CC="$CMPLR_ROOT/bin/icx"
           export CFLAGS="${CFLAGS} -fno-fast-math"
-          python setup.py develop
+          pip install . --no-build-isolation --no-deps --verbose
 
       - name: Run mkl-service tests
         run: |
           source ${{ env.ONEAPI_ROOT }}/setvars.sh
+          pip install pytest
           pytest -s -v --pyargs mkl

.github/workflows/build-with-standard-clang.yml

@@ -0,0 +1,64 @@
+name: Build project with standard clang compiler
+
+on:
+  pull_request:
+  push:
+    branches: [master]
+
+permissions: read-all
+
+jobs:
+  build-with-standard-clang:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        python: ["3.10", "3.11", "3.12", "3.13", "3.14"]
+        numpy_version: ["numpy'>=2'"]
+
+    env:
+      COMPILER_ROOT: /usr/bin
+
+    defaults:
+      run:
+        shell: bash -el {0}
+
+    steps:
+      - name: Cancel Previous Runs
+        uses: styfle/cancel-workflow-action@3155a141048f8f89c06b4cdae32e7853e97536bc # 0.13.0
+        with:
+          access_token: ${{ github.token }}
+
+      - name: Install Dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y clang
+
+      - name: Setup Python
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
+        with:
+          python-version: ${{ matrix.python }}
+          architecture: x64
+
+      - name: Checkout repo
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          fetch-depth: 0
+
+      - name: Install mkl-service dependencies
+        run: |
+          pip install meson-python cython cmake ninja mkl-devel mkl
+          pip install ${{ matrix.numpy_version }}
+
+      - name: Build mkl-service
+        run: |
+          export CC=${{ env.COMPILER_ROOT }}/clang
+          pip install . --no-build-isolation --no-deps --verbose
+
+      - name: Run mkl-service tests
+        run: |
+          pip install pytest
+          # mkl-service cannot be installed in editable mode, we need
+          # to change directory before importing it and running tests
+          cd ..
+          pytest -s -v --pyargs mkl

.github/workflows/build_pip.yml

@@ -0,0 +1,50 @@
+name: Editable build using pip and pre-release NumPy
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+permissions: read-all
+
+env:
+  PACKAGE_NAME: mkl-service
+  MODULE_NAME: mkl-service
+  TEST_ENV_NAME: test_mkl_service
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+         shell: bash -el {0}
+
+    strategy:
+      matrix:
+        python: ["3.10", "3.11", "3.12", "3.13", "3.14"]
+        use_pre: ["", "--pre"]
+
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          fetch-depth: 0
+
+      - uses: conda-incubator/setup-miniconda@fc2d68f6413eb2d87b895e92f8584b5b94a10167 # v3.3.0
+        with:
+          miniforge-version: latest
+          channels: conda-forge
+          activate-environment: test
+          python-version: ${{ matrix.python }}
+
+      - name: Install MKL
+        run: |
+          conda install mkl-devel mkl
+
+      - name: Build conda package
+        run: |
+          pip install --no-cache-dir meson-python ninja cmake cython
+          pip install --no-cache-dir numpy ${{ matrix.use_pre }}
+          pip install -e ".[test]" --no-build-isolation --verbose
+          pip list
+          python -m pytest -v mkl/tests

conda-recipe-cf/bld.bat

@@ -1,5 +1,4 @@
 @rem Remember to activate Intel Compiler, or remove these two lines to use Microsoft Visual Studio compiler
 
-set MKLROOT=%PREFIX%
-%PYTHON% setup.py build --force install --old-and-unmanageable
+%PYTHON% -m pip install --no-deps --no-build-isolation .
 if errorlevel 1 exit 1

conda-recipe-cf/build.sh

@@ -1,2 +1,2 @@
 #!/bin/bash -x
-MKLROOT=$PREFIX $PYTHON setup.py build --force install --old-and-unmanageable
+$PYTHON -m pip install --no-deps --no-build-isolation .

conda-recipe-cf/meta.yaml

@@ -18,14 +18,16 @@ requirements:
       - {{ compiler('c') }}
       - {{ stdlib('c') }}
     host:
+      - meson-python >=0.13.0
+      - meson
+      - cmake
+      - ninja
       - python
       - python-gil     # [py>=314]
       - pip >=25.0
-      - setuptools >=77
       - mkl-devel
       - cython
       - wheel >=0.45.1
-      - python-build >=1.2.2
     run:
       - python
       - python-gil     # [py>=314]

conda-recipe/bld.bat

@@ -2,13 +2,6 @@ echo on
 rem set CFLAGS=-I%PREFIX%\Library\include %CFLAGS%
 rem set LDFLAGS=/LIBPATH:%PREFIX% %LDFLAGS%
 
-set MKLROOT=%CONDA_PREFIX%
-
-"%PYTHON%" setup.py clean --all
-
-:: Make CMake verbose
-set "VERBOSE=1"
-
 :: -wnx flags mean: --wheel --no-isolation --skip-dependency-check
 %PYTHON% -m build -w -n -x
 if %ERRORLEVEL% neq 0 exit 1

conda-recipe/build.sh

@@ -1,15 +1,12 @@
 #!/bin/bash
 set -ex
 
-export MKLROOT=$CONDA_PREFIX
-
 read -r GLIBC_MAJOR GLIBC_MINOR <<<"$(conda list '^sysroot_linux-64$' \
     | tail -n 1 | awk '{print $2}' | grep -oP '\d+' | head -n 2 | tr '\n' ' ')"
 
-${PYTHON} setup.py clean --all
-
-# Make CMake verbose
-export VERBOSE=1
+if [ -d "build" ]; then
+    rm -rf build
+fi
 
 # -wnx flags mean: --wheel --no-isolation --skip-dependency-check
 ${PYTHON} -m build -w -n -x

conda-recipe/meta.yaml

@@ -18,14 +18,17 @@ requirements:
       - {{ compiler('c') }}
       - {{ stdlib('c') }}
     host:
+      - meson-python >=0.13.0
+      - meson
+      - cmake
+      - ninja
       - python
       - python-gil     # [py>=314]
+      - python-build
       - pip >=25.0
-      - setuptools >=77
       - mkl-devel
       - cython
       - wheel >=0.45.1
-      - python-build >=1.2.2
     run:
       - python
       - python-gil     # [py>=314]

meson.build

@@ -0,0 +1,70 @@
+project(
+    'mkl-service',
+    ['c', 'cython'],
+    version: run_command(
+        'python', '-c',
+        'import os; exec(open("mkl/_version.py").read()); print(__version__)',
+        check: true
+    ).stdout().strip(),
+    default_options: [
+        'buildtype=release',
+    ]
+)
+
+py = import('python').find_installation(pure: false)
+
+c_args = ['-DNDEBUG']
+
+thread_dep = dependency('threads')
+
+cc = meson.get_compiler('c')
+mkl_dep = dependency('MKL', method: 'cmake',
+    modules: ['MKL::MKL'],
+    cmake_args: [
+        '-DMKL_ARCH=intel64',
+        '-DMKL_LINK=sdl',
+    ],
+    required: true
+)
+
+rpath = ''
+if host_machine.system() != 'windows'
+    rpath = '$ORIGIN/../..:$ORIGIN/../../..'
+endif
+
+# C extension
+py.extension_module(
+    '_mklinit',
+    sources: ['mkl/_mklinitmodule.c'],
+    dependencies: [mkl_dep, thread_dep],
+    c_args: c_args + ['-DUSING_MKL_RT'],
+    install_rpath: rpath,
+    install: true,
+    subdir: 'mkl'
+)
+
+# Cython extension
+py.extension_module(
+    '_py_mkl_service',
+    sources: ['mkl/_py_mkl_service.pyx'],
+    dependencies: [mkl_dep],
+    c_args: c_args,
+    install_rpath: rpath,
+    install: true,
+    subdir: 'mkl'
+)
+
+# Python sources
+py.install_sources(
+    [
+        'mkl/__init__.py',
+        'mkl/_init_helper.py',
+        'mkl/_version.py',
+    ],
+    subdir: 'mkl'
+)
+
+install_subdir(
+    'mkl/tests',
+    install_dir: py.get_install_dir() / 'mkl'
+)

pyproject.toml

@@ -24,19 +24,17 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 [build-system]
-build-backend = "setuptools.build_meta"
+build-backend = "mesonpy"
 requires = [
-  "setuptools>=77",
+  "meson-python>=0.13.0",
+  "ninja",
   "Cython",
-  "wheel>=0.45.1",
-  "build>=1.2.2",
-  "mkl-devel"
+  "mkl-devel",
+  "cmake"
 ]
 
 [project]
-authors = [
-  {name = "Intel Corporation", email = "scripting@intel.com"}
-]
+authors = [{name = "Intel Corporation"}]
 classifiers = [
   "Development Status :: 5 - Production/Stable",
   "Intended Audience :: Science/Research",