Add support for building the library on Windows using MSVC. (#56)

.github/workflows/build_wheels.yml

@@ -175,6 +175,20 @@ jobs:
           - name: cp39-musllinux_x86_64
             os: ubuntu-22.04
 
+          # Windows builds
+          - name: cp37-win_amd64
+            os: windows-2022
+          - name: cp38-win_amd64
+            os: windows-2022
+          - name: cp39-win_amd64
+            os: windows-2022
+          - name: cp310-win_amd64
+            os: windows-2022
+          - name: cp311-win_amd64
+            os: windows-2022
+          - name: cp312-win_amd64
+            os: windows-2022
+
     steps:
       - name: Checkout
         uses: actions/checkout@v4

README.md

@@ -19,7 +19,7 @@ python3 -m pip install --upgrade clp-ffi-py
 Note:
 
 - Python 3.7 or higher is required.
-- Only Linux and macOS are supported at present.
+- Tested on Linux, macOS and Windows.
 
 To install an older version or download the prebuilt `whl` package, check the
 project homepage on PyPI [here][16].
@@ -35,8 +35,10 @@ To manually build a package for distribution, follow the steps below.
 
 ### Requirements
 
-* A C++ compiler that supports C++20 and `std::span` (e.g. `clang++` >= 7 or
-  `g++` >= 10).
+* A C++ compiler that supports C++20 and `std::span`, e.g:
+  * `clang++` >= 7
+  * `g++` >= 10
+  * `MSVC` >= 1930 (included in Visual Studio 2022)
 * python3
 * python3-dev
 * python3-venv

pyproject.toml

@@ -50,8 +50,7 @@ musllinux-x86_64-image = "musllinux_1_2"
 skip = "pp*"
 
 test-command = [
-  "cd {package}/tests",
-  "python -m unittest -fv",
+  "python -m unittest discover --failfast --verbose --start-directory={package}/tests"
 ]
 test-requires = [
     "smart_open==6.4.0"
@@ -68,6 +67,9 @@ archs = ["auto", "aarch64"]
 [tool.cibuildwheel.macos]
 archs = ["x86_64", "universal2", "arm64"]
 
+[tool.cibuildwheel.windows]
+archs = ["AMD64"]
+
 [tool.docformatter]
 make-summary-multi-line = true
 pre-summary-newline = true

setup.py

@@ -43,6 +43,9 @@
         f"{clp_ffi_py_src_root}/utils.cpp",
     ],
     extra_compile_args=[
+        "/std:c++20",
+        "/O2,"
+    ] if "nt" == os.name else [
         "-std=c++20",
         "-O3",
     ],