Move build system to meson-python

.flake8

@@ -12,6 +12,8 @@ extend-ignore =
     D102,
     # missing docstring in public function:
     D103,
+    # missing docstring in public package:
+    D104,
     # missing docstring in __init__:
     D107,
     # 1 blank line required between summary line and description:
@@ -26,7 +28,9 @@ per-file-ignores =
     mkl_umath/ufunc_docstrings_numpy1.py: E501
     mkl_umath/ufunc_docstrings_numpy2.py: E501
 
-exclude = _vendored/conv_template.py
+exclude =
+    _vendored/conv_template.py
+    _vendored/process_src_template.py
 
 filename = *.py, *.pyx, *.pxi, *.pxd
 max_line_length = 80

.git-blame-ignore-revs

@@ -5,3 +5,6 @@
 
 # added more linters
 3a3df3fae1574558973e3829368dc8a7b9c76ad9
+
+# fix linting in conda-package-cf
+f94f488ce98e06e5ffab1ce02ecd525b1680726c

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

@@ -8,7 +8,7 @@ on:
 permissions: read-all
 
 jobs:
-  build-with-clang:
+  build-with-intel-clang:
     runs-on: ubuntu-latest
 
     strategy:
@@ -43,6 +43,10 @@ jobs:
           sudo apt-get install intel-oneapi-tbb
           sudo apt-get install intel-oneapi-mkl-devel
 
+      - name: Install gdb (DEBUG)
+        run: |
+          sudo apt-get install gdb
+
       - name: Setup Python
         uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
         with:
@@ -56,7 +60,7 @@ jobs:
 
       - name: Install mkl_umath dependencies
         run: |
-          pip install scikit-build cmake ninja cython setuptools">=77"
+          pip install meson-python ninja cython mkl-service
           pip install ${{ matrix.numpy_version }}
 
       - name: List oneAPI folder content
@@ -67,7 +71,6 @@ jobs:
           source ${{ env.ONEAPI_ROOT }}/setvars.sh
           echo "$CMPLR_ROOT"
           export CC="$CMPLR_ROOT/bin/icx"
-          export CFLAGS="${CFLAGS} -fno-fast-math -O2"
           pip install . --no-build-isolation --no-deps --verbose
 
       - name: Run mkl_umath tests
@@ -77,4 +80,7 @@ jobs:
           # mkl_umath cannot be installed in editable mode, we need
           # to change directory before importing it and running tests
           cd ..
-          python -m pytest -sv --pyargs mkl_umath/mkl_umath/tests
+          ulimit -c unlimited
+          python -m pytest -sv --pyargs mkl_umath || true
+          coredumpctl info --no-pager || true
+          coredumpctl gdb --debugger-arguments="-batch -ex 'thread apply all bt full' -ex quit" || true

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

@@ -0,0 +1,76 @@
+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: Install gdb (DEBUG)
+        run: |
+          sudo apt-get install gdb
+
+      - 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_umath dependencies
+        run: |
+          pip install meson-python ninja cython mkl-service
+          pip install mkl-devel tbb-devel
+          pip install ${{ matrix.numpy_version }}
+
+      - name: Build mkl_umath
+        run: |
+          export CC=${{ env.COMPILER_ROOT }}/clang
+          pip install . --no-build-isolation --no-deps --verbose
+
+      - name: Run mkl_umath 
+        env:
+          MKL_THREADING_LAYER: GNU
+          MKL_SERVICE_FORCE_INTEL: "1"
+          OMP_NUM_THREADS: "1"
+          OPENBLAS_NUM_THREADS: "1"
+        run: |
+          pip install pytest
+          # mkl_umath cannot be installed in editable mode, we need
+          # to change directory before importing it and running tests
+          cd ..
+          ulimit -c unlimited
+          python -m pytest -sv --pyargs mkl_umath || true
+          coredumpctl info --no-pager || true
+          coredumpctl gdb --debugger-arguments="-batch -ex 'thread apply all bt full' -ex quit" || true

.github/workflows/build_pip.yaml

@@ -48,14 +48,12 @@ jobs:
 
       - name: Build conda package
         run: |
-          pip install --no-cache-dir scikit-build cmake ninja cython
+          pip install --no-cache-dir meson-python ninja cython
           pip install --no-cache-dir numpy ${{ matrix.use_pre }}
-          echo "CONDA_PREFFIX is '${CONDA_PREFIX}'"
-          export MKLROOT=${CONDA_PREFIX}
           CC=icx pip install . --no-build-isolation --no-deps --verbose
           pip install --no-cache-dir pytest
           pip list
           # mkl_umath cannot be installed in editable mode, we need
           # to change directory before importing it and running tests
           cd ..
-          python -m pytest -v mkl_umath/mkl_umath/tests
+          python -m pytest -sv --pyargs mkl_umath