CI: add all other wheel build config files (unmodified from main repo)

Author: rgommers

.github/windows_arm64_steps/action.yml

@@ -0,0 +1,22 @@
+name: Build Dependencies(Win-ARM64)
+description: "Setup LLVM for Win-ARM64 builds"
+
+runs:
+  using: "composite"
+  steps:
+    - name: Install LLVM with checksum verification
+      shell: pwsh
+      run: |
+        Invoke-WebRequest https://github.com/llvm/llvm-project/releases/download/llvmorg-20.1.6/LLVM-20.1.6-woa64.exe -UseBasicParsing -OutFile LLVM-woa64.exe
+        $expectedHash = "92f69a1134e32e54b07d51c6e24d9594852f6476f32c3d70471ae00fffc2d462"
+        $fileHash = (Get-FileHash -Path "LLVM-woa64.exe" -Algorithm SHA256).Hash
+        if ($fileHash -ne $expectedHash) {
+            Write-Error "Checksum verification failed. The downloaded file may be corrupted or tampered with."
+            exit 1
+        }
+        Start-Process -FilePath ".\LLVM-woa64.exe" -ArgumentList "/S" -Wait
+        echo "C:\Program Files\LLVM\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
+        echo "CC=clang-cl" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+        echo "CXX=clang-cl" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+        echo "FC=flang-new" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+

cibuildwheel.toml

@@ -0,0 +1,50 @@
+[tool.cibuildwheel]
+# Note: the below skip command doesn't do much currently, the platforms to
+# build wheels for in CI are controlled in `.github/workflows/wheels.yml` and
+# `tools/ci/cirrus_wheels.yml`.
+build-frontend = "build"
+skip = ["*_i686", "*_ppc64le", "*_s390x", "*_universal2"]
+before-build = "bash {project}/tools/wheels/cibw_before_build.sh {project}"
+before-test = "pip install -r {project}/requirements/test_requirements.txt"
+test-command = "bash {project}/tools/wheels/cibw_test_command.sh {project}"
+enable = ["cpython-freethreading", "pypy", "cpython-prerelease"]
+
+# The build will use openblas64 everywhere, except on arm64 macOS >=14.0 (uses Accelerate)
+[tool.cibuildwheel.config-settings]
+setup-args = ["-Duse-ilp64=true", "-Dallow-noblas=false"]
+build-dir = "build"
+
+[tool.cibuildwheel.linux]
+manylinux-x86_64-image = "manylinux_2_28"
+manylinux-aarch64-image = "manylinux_2_28"
+musllinux-x86_64-image = "musllinux_1_2"
+musllinux-aarch64-image = "musllinux_1_2"
+
+[tool.cibuildwheel.linux.environment]
+# RUNNER_OS is a GitHub Actions specific env var; define it here so it works on Cirrus CI too
+RUNNER_OS="Linux"
+# /project will be the $PWD equivalent inside the docker used to build the wheel
+PKG_CONFIG_PATH="/project/.openblas"
+LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/project/.openblas/lib"
+
+[tool.cibuildwheel.macos]
+# universal2 wheels are not supported (see gh-21233), use `delocate-fuse` if you need them
+# note that universal2 wheels are not built, they're listed in the tool.cibuildwheel.skip
+# section
+# Not clear why the DYLD_LIBRARY_PATH is not passed through from the environment
+repair-wheel-command = [
+  "export DYLD_LIBRARY_PATH=$PWD/.openblas/lib",
+  "echo DYLD_LIBRARY_PATH $DYLD_LIBRARY_PATH",
+  "delocate-wheel --require-archs {delocate_archs} -w {dest_dir} -v {wheel}",
+]
+
+[tool.cibuildwheel.windows]
+config-settings = {setup-args = ["--vsenv", "-Dallow-noblas=false"], build-dir="build"}
+repair-wheel-command = "bash -el ./tools/wheels/repair_windows.sh {wheel} {dest_dir}"
+# This does not work, use CIBW_ENVIRONMENT_WINDOWS
+environment = {PKG_CONFIG_PATH="./.openblas"}
+
+[[tool.cibuildwheel.overrides]]
+select = ["*-win32"]
+config-settings = {setup-args = ["--vsenv", "-Dallow-noblas=true"], build-dir="build"}
+repair-wheel-command = ""