Build winreg by default when compiling for MINGW

Co-authored-by: Алексей <[email protected]>
Co-authored-by: Christoph Reiter <[email protected]>

Modules/Setup.bootstrap.in

@@ -33,3 +33,6 @@ _symtable symtablemodule.c
 
 # for systems without $HOME env, used by site._getuserbase()
 @MODULE_PWD_TRUE@pwd pwdmodule.c
+
+# build-in modules for windows platform:
+@USE_WIN32_MODULE@winreg ../PC/winreg.c

PC/winreg.c

@@ -18,6 +18,25 @@
 #include "structmember.h"         // PyMemberDef
 #include <windows.h>
 
+#ifndef SIZEOF_HKEY
+/* used only here */
+#if defined(MS_WIN64)
+#  define SIZEOF_HKEY 8
+#elif defined(MS_WIN32)
+#  define SIZEOF_HKEY 4
+#else
+#  error "SIZEOF_HKEY is not defined"
+#endif
+#endif
+
+#ifndef REG_LEGAL_CHANGE_FILTER
+#define REG_LEGAL_CHANGE_FILTER        (\
+          REG_NOTIFY_CHANGE_NAME       |\
+          REG_NOTIFY_CHANGE_ATTRIBUTES |\
+          REG_NOTIFY_CHANGE_LAST_SET   |\
+          REG_NOTIFY_CHANGE_SECURITY   )
+#endif
+
 static BOOL PyHKEY_AsHKEY(PyObject *ob, HKEY *pRes, BOOL bNoneOK);
 static BOOL clinic_HKEY_converter(PyObject *ob, void *p);
 static PyObject *PyHKEY_FromHKEY(HKEY h);

configure.ac

@@ -4161,6 +4161,13 @@ AS_VAR_IF([with_dbmliborder], [error], [
 ])
 AC_MSG_RESULT($with_dbmliborder)
 
+# Determine if windows modules should be used.
+AC_SUBST(USE_WIN32_MODULE)
+USE_WIN32_MODULE='#'
+case $host in
+  *-*-mingw*) USE_WIN32_MODULE=;;
+esac
+
 # Templates for things AC_DEFINEd more than once.
 # For a single AC_DEFINE, no template is needed.
 AH_TEMPLATE(_REENTRANT,