Windows

layer4/Cmd.cpp

@@ -6531,7 +6531,7 @@ static PyMethodDef Cmd_methods[] = {
 extern "C" {
 #endif
 
-PyObject * PyInit__cmd(void)
+PyMODINIT_FUNC PyInit__cmd(void)
 {
   static struct PyModuleDef moduledef = {
     PyModuleDef_HEAD_INIT,

setup.py

@@ -250,9 +250,32 @@ def finalize_options(self):
             self.pymol_path = install_pymol.change_root(
                 self.root, self.pymol_path)
 
+    def install_lib_to(self, sub_dir_list: list[str], lib_name: str) -> None:
+        """
+        Installs a library to the appropriate directory depending on the
+            operating system.
+        :sub_dir_list: The subdirectories where the library is located
+            relative to the build_lib and install_platlib directories.
+        :lib_name: The filename of the library (without the extension).
+        """
+        lib_path = pathlib.Path(self.build_lib, *sub_dir_list)
+        if WIN:
+            lib_path = lib_path / "Release" / f"{lib_name}.pyd"
+        else:
+            lib_path = lib_path / f"{lib_name}.so"
+        dst = pathlib.Path(self.install_platlib, *sub_dir_list)
+        self.copy(str(lib_path), str(dst))
+
+    def install_pymol_lib(self) -> None:
+        """
+        Installs PyMOL _cmd library
+        """
+        self.install_lib_to(["pymol"], "_cmd")
+
     def run(self):
         install.run(self)
         self.install_pymol_path()
+        self.install_pymol_lib()
 
         if not self.no_launcher:
             self.make_launch_script()
@@ -605,6 +628,9 @@ def get_packages(base, parent='', r=None):
 champ_inc_dirs.append(sysconfig.get_paths()['include'])
 champ_inc_dirs.append(sysconfig.get_paths()['platinclude'])
 
+if WIN:
+    py_lib = pathlib.Path(sysconfig.get_paths()['stdlib']).parent / 'libs'
+    lib_dirs.append(str(py_lib))
 
 ext_modules += [
     CMakeExtension(
@@ -622,6 +648,7 @@ def get_packages(base, parent='', r=None):
         name="chempy.champ._champ",
         sources=get_sources(['contrib/champ']),
         include_dirs=champ_inc_dirs,
+        library_dirs=lib_dirs,
     ),
 ]