Adds action to build wheel manually

.github/workflows/build_wheel.yml

@@ -0,0 +1,72 @@
+name: Build wheel
+
+on:
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        platform: [windows-latest, ubuntu-latest, macos-latest, macos-14]
+    env:
+      CIBW_SKIP: 'pp*'
+      CIBW_ARCHS: 'auto64'
+      CIBW_PROJECT_REQUIRES_PYTHON: '>=3.9'
+      CIBW_TEST_REQUIRES: 'pytest'
+      # Appends the project path since build is not done in the project directory
+      CIBW_TEST_COMMAND: 'pytest {project}/tmp/tests'
+
+    defaults:
+      run:
+        shell: bash -l {0}
+
+    runs-on: ${{ matrix.platform }}
+
+    steps:
+      - uses: actions/checkout@v4      
+        with:
+          submodules: true
+      - name: Set up Python version ${{ matrix.version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.x"
+      - name: Install OMP (MacOS Intel) 
+        if: matrix.platform == 'macos-latest'
+        run: |
+          brew install llvm libomp
+          echo "export CC=/usr/local/opt/llvm/bin/clang" >> ~/.bashrc
+          echo "export CFLAGS=\"$CFLAGS -I/usr/local/opt/libomp/include\"" >> ~/.bashrc
+          echo "export CXXFLAGS=\"$CXXFLAGS -I/usr/local/opt/libomp/include\"" >> ~/.bashrc
+          echo "export LDFLAGS=\"$LDFLAGS -Wl,-rpath,/usr/local/opt/libomp/lib -L/usr/local/opt/libomp/lib -lomp\"" >> ~/.bashrc
+          source ~/.bashrc
+      - name: Install OMP (MacOS M1) 
+        if: matrix.platform == 'macos-14'
+        run: |
+          brew install llvm libomp
+          echo "export CC=/opt/homebrew/opt/llvm/bin/clang" >> ~/.bashrc
+          echo "export CFLAGS=\"$CFLAGS -I/opt/homebrew/opt/libomp/include\"" >> ~/.bashrc
+          echo "export CXXFLAGS=\"$CXXFLAGS -I/opt/homebrew/opt/libomp/include\"" >> ~/.bashrc
+          echo "export LDFLAGS=\"$LDFLAGS -Wl,-rpath,/opt/homebrew/opt/libomp/lib -L/opt/homebrew/opt/libomp/lib -lomp\"" >> ~/.bashrc
+          source ~/.bashrc
+      - name: Install OMP (Linux)
+        if: runner.os == 'Linux'
+        run: |
+          sudo apt-get update
+          sudo apt install libomp-dev
+      - name: Build Wheel
+        run: |
+          # Hack to ensure installed RAT package is used for test instead 
+          # of local package.
+          mkdir tmp
+          cp -r tests tmp/tests/
+          python -m pip install cibuildwheel==2.16.5
+          python -m cibuildwheel --output-dir wheelhouse
+      - uses: actions/upload-artifact@v4
+        with:
+          name: wheels-${{ runner.os }}-${{ strategy.job-index }}
+          path: ./wheelhouse/*.whl 

setup.py

@@ -3,7 +3,7 @@
 import platform
 import sys
 import pybind11
-from setuptools import setup, Extension
+from setuptools import setup, Extension, find_packages
 from setuptools.command.build_ext import build_ext
 from setuptools.command.build_clib import build_clib
 
@@ -152,7 +152,7 @@ def build_libraries(self, libraries):
     author_email = '',
     url = 'https://github.com/RascalSoftware/python-RAT',
     description = 'Python extension for the Reflectivity Analysis Toolbox (RAT)',
-    packages = ['RAT'],
+    packages = find_packages(),
     include_package_data = True,
     package_data = {'': [get_shared_object_name(libevent[0])]},
     cmdclass = {'build_clib': BuildClib, 'build_ext': BuildExt},