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Fix Windows cibuildwheel failure: linker cannot find openblas.lib #1

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Fix Windows cibuildwheel failure: linker cannot find openblas.lib #1

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f244f05
Initial plan
Copilot Feb 18, 2026
8797f51
Move cibuildwheel Windows configuration to pyproject.toml
Copilot Feb 18, 2026
70aed21
Fix Windows vcpkg setup and add caching
Copilot Feb 18, 2026
5761f38
Add documentation for Windows vcpkg configuration
Copilot Feb 18, 2026
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24 changes: 3 additions & 21 deletions .github/workflows/cibuildwheel.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -22,37 +22,19 @@ jobs:
with:
python-version: "3.11"

- name: Install dependencies (macOS)
if: runner.os == 'macOS'
run: |
brew install uv

- name: Cache vcpkg
if: runner.os == 'Windows'
uses: actions/cache@v4
with:
path: C:\\vcpkg\\installed
key: vcpkg-openblas-${{ runner.os }}
key: vcpkg-openblas-${{ runner.os }}-${{ hashFiles('pyproject.toml') }}
restore-keys: |
vcpkg-openblas-${{ runner.os }}-

- name: Install cibuildwheel
run: python -m pip install --upgrade pip cibuildwheel

- name: Build wheels
env:
CIBW_ENVIRONMENT_MACOS: EASYSBA_USE_ACCELERATE=1 EASYSBA_LAPACK_LIBS=
CIBW_BEFORE_ALL_WINDOWS: >-
if not exist C:\vcpkg\vcpkg.exe (
git clone https://github.com/microsoft/vcpkg.git C:\vcpkg &&
C:\vcpkg\bootstrap-vcpkg.bat -disableMetrics
) &&
C:\vcpkg\vcpkg.exe install openblas:x64-windows
CIBW_ENVIRONMENT_WINDOWS: |
EASYSBA_LAPACK_LIBS=openblas
EASYSBA_INCLUDE_DIRS=C:\\vcpkg\\installed\\x64-windows\\include
EASYSBA_LIBRARY_DIRS=C:\\vcpkg\\installed\\x64-windows\\lib
INCLUDE=C:\\vcpkg\\installed\\x64-windows\\include
LIB=C:\\vcpkg\\installed\\x64-windows\\lib
PATH=C:\\vcpkg\\installed\\x64-windows\\bin;{PATH}
run: python -m cibuildwheel --output-dir wheelhouse

- name: Upload wheels
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9 changes: 8 additions & 1 deletion pyproject.toml
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Expand Up @@ -22,5 +22,12 @@ before-all = "yum -y install openblas-devel lapack-devel"
[tool.cibuildwheel.macos]
environment = { EASYSBA_USE_ACCELERATE = "1", EASYSBA_LAPACK_LIBS = "" }

# Windows configuration: Uses vcpkg to install OpenBLAS
# The before-all command:
# 1. Checks if vcpkg is already installed at C:\vcpkg
# 2. If not, clones and bootstraps vcpkg
# 3. Installs openblas for x64-windows architecture
# The environment variables point to the vcpkg installation paths for includes and libraries
[tool.cibuildwheel.windows]
environment = { EASYSBA_LAPACK_LIBS = "openblas" }
before-all = "powershell -Command \"if (!(Test-Path C:\\vcpkg\\vcpkg.exe)) { git clone https://github.com/microsoft/vcpkg.git C:\\vcpkg; C:\\vcpkg\\bootstrap-vcpkg.bat -disableMetrics }; C:\\vcpkg\\vcpkg.exe install openblas:x64-windows\""
environment = { EASYSBA_LAPACK_LIBS = "openblas", EASYSBA_INCLUDE_DIRS = "C:\\vcpkg\\installed\\x64-windows\\include", EASYSBA_LIBRARY_DIRS = "C:\\vcpkg\\installed\\x64-windows\\lib" }
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