ci: install fftw from source

.github/workflows/python_skbuild_wheels.yml

@@ -40,16 +40,27 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install FFTW
-        run: C:\msys64\usr\bin\bash.exe -lc "pacman -Sy --noconfirm mingw-w64-x86_64-fftw"
+        run: |
+          Invoke-WebRequest -Uri "https://www.fftw.org/fftw-3.3.10.tar.gz" -OutFile "${{ github.workspace }}\fftw.tar.gz"
 
-      - name: Setup tmate session
-        uses: mxschmitt/action-tmate@v3
+          New-Item -Path "${{ github.workspace }}" -Name "fftw-source" -ItemType Directory
+          tar --strip-components=1 -C "${{ github.workspace }}\fftw-source" -zxf "${{ github.workspace }}\fftw.tar.gz"
+
+          cmake -S "${{ github.workspace }}\fftw-source" -D CMAKE_INSTALL_PREFIX="${{ github.workspace }}\fftw" -D ENABLE_AVX2=ON -D BUILD_TESTS=OFF -D BUILD_SHARED_LIBS=OFF -D ENABLE_OPENMP=ON -D ENABLE_FLOAT=OFF -B "${{ github.workspace }}\fftw-build"
+          cmake --build "${{ github.workspace }}\fftw-build" --config Release
+          cmake --install "${{ github.workspace }}\fftw-build"
+
+          cmake -S "${{ github.workspace }}\fftw-source" -D CMAKE_INSTALL_PREFIX="${{ github.workspace }}\fftw" -D ENABLE_AVX2=ON -D BUILD_TESTS=OFF -D BUILD_SHARED_LIBS=OFF -D ENABLE_OPENMP=ON -D ENABLE_FLOAT=ON -B "${{ github.workspace }}\fftw-build"
+          cmake --build "${{ github.workspace }}\fftw-build" --config Release
+          cmake --install "${{ github.workspace }}\fftw-build"
 
       - name: Build wheels
         uses: pypa/[email protected]
         env:
           CIBW_ARCHS: AMD64
           CIBW_BUILD_VERBOSITY: 1
+          CIBW_ENVIRONMENT: >
+            FFTW_ROOT="${{ github.workspace }}\fftw"
 
       - uses: actions/upload-artifact@v4
         with: