Windows complex

See GraphBLAS#64

Author: alugowski

.github/workflows/test.yml

@@ -2,7 +2,7 @@ name: Test
 
 on:
   push:
-    branches: [ main ]
+#    branches: [ main ]
   pull_request:
 
 jobs:

setup.py

@@ -53,10 +53,45 @@
         extra_compile_args=["/d2FH4-", "/std:c11"] if sys.platform == "win32" else [],
     )
     for name in glob(f"suitesparse_graphblas/**/*{suffix}", recursive=True)
+    if not name.endswith("_graphblas.c")
 ]
+
 if use_cython:
     ext_modules = cythonize(ext_modules, include_path=include_dirs)
 
+if is_win:
+    include_dirs = [os.path.join(sys.prefix, "include")]
+    library_dirs = [os.path.join(sys.prefix, "lib")]
+
+    include_dirs.append(os.path.join(sys.prefix, "Library", "include"))
+    library_dirs.append(os.path.join(sys.prefix, "Library", "lib"))
+
+    # suitesparse.sh installs GraphBLAS.h here
+    include_dirs.append(os.path.join("C:\\", "Program Files (x86)", "include"))
+    # graphblas.lib and graphblas.dll.a
+    library_dirs.append(os.path.join("C:\\", "Program Files (x86)", "lib"))
+    # graphblas.dll
+    library_dirs.append(os.path.join("C:\\", "Program Files (x86)", "bin"))
+
+    ext_modules.append(
+        Extension(
+            "suitesparse_graphblas._graphblas",
+            ["suitesparse_graphblas\\_graphblas.c"],
+            include_dirs=include_dirs,
+            library_dirs=library_dirs,
+            libraries=["graphblas"],
+            # /d2FH4- flag needed only for early Python 3.8 builds on Windows.
+            # See https://cibuildwheel.readthedocs.io/en/stable/faq/
+            # (Search for flag on page. Full link causes the linter to fail the tests.)
+            #
+            # The /std:c11 flag is because the MSVC default is C89.
+            extra_compile_args=["/d2FH4-", "/std:c11"],
+        )
+    )
+print("ext_modules:")
+for e in ext_modules:
+    print(f"{e.name}: {e.sources}")
+
 with open("README.md") as f:
     long_description = f.read()
 
@@ -76,7 +111,7 @@
     author_email="michel@graphegon.com,jim22k@gmail.com,erik.n.welch@gmail.com",
     url="https://github.com/GraphBLAS/python-suitesparse-graphblas",
     ext_modules=ext_modules,
-    cffi_modules=["suitesparse_graphblas/build.py:ffibuilder"],
+    cffi_modules=["suitesparse_graphblas/build.py:ffibuilder"] if not is_win else [],
     python_requires=">=3.8",
     install_requires=["cffi>=1.0.0", "numpy>=1.19"],
     setup_requires=["cffi>=1.0.0", "pytest-runner"],