diff -aur 000/setup.py 001/setup.py
--- 000/setup.py	2015-04-09 21:00:48.725278100 -0300
+++ 001/setup.py	2015-04-09 21:02:02.350399800 -0300
@@ -264,16 +264,7 @@
 MSVCCompiler.link = monkeypatched_link
 
 
-sdk_info = find_platform_sdk_dir()
-if not sdk_info:
-    print()
-    print("It looks like you are trying to build pywin32 in an environment without")
-    print("the necessary tools installed. It's much easier to grab binaries!")
-    print()
-    print("Please read the docstring at the top of this file, or read README.md")
-    print("for more information.")
-    print()
-    raise RuntimeError("Can't find the Windows SDK")
+sdk_info = { 'include': '', 'lib': '' }
 
 class WinExt (Extension):
     # Base class for all win32 extensions, with some predefined
@@ -305,11 +296,20 @@
 
         extra_link_args = extra_link_args or []
         if export_symbol_file:
-            extra_link_args.append("/DEF:" + export_symbol_file)
+            extra_link_args.append(export_symbol_file)
 
         # Some of our swigged files behave differently in distutils vs
         # MSVC based builds.  Always define DISTUTILS_BUILD so they can tell.
         define_macros = define_macros or []
+        define_macros.append(("NTDDI_VERSION", 0x06000000))
+        define_macros.append(("_WIN32_WINNT", 0x0600))
+        define_macros.append(("USE_COM_CONTEXT_DEF", None))
+        define_macros.append(("NO_PYCOM_IDISPATCHEX", None))
+        define_macros.append(("__in", ""))
+        define_macros.append(("__in_opt", ""))
+        define_macros.append(("__out", ""))
+        define_macros.append(("__deref_out_ecount_full(x)", ""))
+        define_macros.append(("_Check_return_", ""))
         define_macros.append(("DISTUTILS_BUILD", None))
         define_macros.append(("_CRT_SECURE_NO_WARNINGS", None))
         self.pch_header = pch_header
@@ -638,7 +632,7 @@
 
     def finalize_options(self):
         build_ext.finalize_options(self)
-        self.windows_h_version = None
+        self.windows_h_version = 0x0600
         # The pywintypes library is created in the build_temp
         # directory, so we need to add this to library_dirs
         self.library_dirs.append(self.build_temp)
@@ -865,7 +868,8 @@
                     log.debug("Looked for %s in %s", lib, look_dirs)
                     return "No library '%s'" % lib
                 self.found_libraries[lib.lower()] = found
-            patched_libs.append(os.path.splitext(os.path.basename(found))[0])
+            lib_name = re.sub(r'^lib(.*)\.a', r'\1', os.path.basename(found))
+            patched_libs.append(os.path.splitext(lib_name)[0])
 
         if ext.platforms and self.plat_name not in ext.platforms:
             return "Only available on platforms %s" % (ext.platforms,)
@@ -975,6 +979,9 @@
             if not self.compiler.initialized:
                 self.compiler.initialize()
 
+        if self.mingw32:
+            self.compiler.shared_lib_extension = '.dll'
+
         self._fixup_sdk_dirs()

         # Here we hack a "pywin32" directory (one of 'win32', 'win32com',
@@ -1226,7 +1233,7 @@
             # XXX This has to be changed for mingw32
             # Get the .lib files we need.  This is limited to pywintypes,
             # pythoncom and win32ui - but the first 2 have special names
-            extra = self.debug and "_d.lib" or ".lib"
+            extra = self.debug and "_d.def" or ".def"
             if ext.name in ("pywintypes", "pythoncom"):
                 # The import libraries are created as PyWinTypes23.lib, but
                 # are expected to be pywintypes.lib.
@@ -1551,7 +1549,7 @@
             win32/src/win32crypt/PyCRYPTPROV.cpp
             win32/src/win32crypt/PyCTL_CONTEXT.cpp
             """),
-        ("win32file", "", None, 0x0500, """
+        ("win32file", "ws2_32 mswsock", None, 0x0500, """
               win32/src/win32file.i
               win32/src/win32file_comm.cpp
               """),
@@ -1813,7 +1813,7 @@
     WinExt_win32com('axscript',
                     sources=("""
                         %(axscript)s/AXScript.cpp
-                        %(axscript)s/GUIDS.CPP                   %(axscript)s/PyGActiveScript.cpp
+                        %(axscript)s/GUIDS.cpp                   %(axscript)s/PyGActiveScript.cpp
                         %(axscript)s/PyGActiveScriptError.cpp    %(axscript)s/PyGActiveScriptParse.cpp
                         %(axscript)s/PyGActiveScriptSite.cpp     %(axscript)s/PyGObjectSafety.cpp
                         %(axscript)s/PyIActiveScript.cpp         %(axscript)s/PyIActiveScriptError.cpp
diff -aur 000/win32/src/odbc.cpp 001/win32/src/odbc.cpp
--- 000/win32/src/odbc.cpp	2015-04-09 21:00:49.053401800 -0300
+++ 001/win32/src/odbc.cpp	2015-04-09 21:02:02.366025800 -0300
@@ -93,8 +93,8 @@
 static cursorObject *cursor(PyObject *o) { return (cursorObject *)o; }
 
 static void cursorDealloc(PyObject *self);
-PyMethodDef cursorMethods[];
-PyMemberDef cursorMembers[];
+extern PyMethodDef cursorMethods[8];
+extern PyMemberDef cursorMembers[3];
 
 static PyTypeObject Cursor_Type = {
     PYWIN_OBJECT_HEAD "odbccur", /*tp_name */
@@ -137,8 +137,8 @@
 };
 
 static void connectionDealloc(PyObject *self);
-PyMethodDef connectionMethods[];
-PyMemberDef connectionMembers[];
+extern PyMethodDef connectionMethods[6];
+extern PyMemberDef connectionMembers[2];
 static PyTypeObject Connection_Type = {
     PYWIN_OBJECT_HEAD "odbcconn", /*tp_name */
     sizeof(connectionObject),     /*tp_basicsize */
diff -aur 000/win32/src/PerfMon/perfmondata.cpp 001/win32/src/PerfMon/perfmondata.cpp
--- 000/win32/src/PerfMon/perfmondata.cpp	2015-04-09 21:00:48.772153700 -0300
+++ 001/win32/src/PerfMon/perfmondata.cpp	2015-04-09 21:02:02.366025800 -0300
@@ -93,9 +93,9 @@
 //      these are used to insure that the data collection functions
 //      accessed by Perflib will have the correct calling format.
 //
-PM_OPEN_PROC OpenPerformanceData;
-PM_COLLECT_PROC CollectPerformanceData;
-PM_CLOSE_PROC ClosePerformanceData;
+extern "C" PM_OPEN_PROC OpenPerformanceData;
+extern "C" PM_COLLECT_PROC CollectPerformanceData;
+extern "C" PM_CLOSE_PROC ClosePerformanceData;
 
 TCHAR szFullModulePath[MAX_PATH];
 TCHAR szModuleName[MAX_PATH];  // will point into the buffer above.
@@ -414,7 +414,7 @@
 --*/
 {
     HKEY hAppKey;
-    TCHAR LogLevelKeyName[] = _T("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Perflib");
+    TCHAR LogLevelKeyName[] = _T("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Perflib");
 
     TCHAR LogLevelValueName[] = _T("EventLogLevel");
     LONG lStatus;
diff -aur 000/win32/src/PySecurityObjects.h 001/win32/src/PySecurityObjects.h
--- 000/win32/src/PySecurityObjects.h	2015-04-09 21:00:48.850278300 -0300
+++ 001/win32/src/PySecurityObjects.h	2015-04-09 21:01:55.881645000 -0300
@@ -118,7 +118,7 @@
     static PyObject *GetSubAuthorityCount(PyObject *self, PyObject *args);
     static PyObject *GetSubAuthority(PyObject *self, PyObject *args);
     static PyObject *GetSidIdentifierAuthority(PyObject *self, PyObject *args);
-    static struct PyMethodDef PySID::methods[];
+    static struct PyMethodDef methods[];
 
    protected:
     PSID m_psid;
@@ -155,7 +155,7 @@
     /* Python support */
     int compare(PyObject *ob);
     static void deallocFunc(PyObject *ob);
-    static struct PyMethodDef PyACL::methods[];
+    static struct PyMethodDef methods[];
 
     static PyObject *Initialize(PyObject *self, PyObject *args);
     static PyObject *IsValid(PyObject *self, PyObject *args);
diff -aur 000/win32/src/PyWinObjects.h 001/win32/src/PyWinObjects.h
--- 000/win32/src/PyWinObjects.h	2015-04-09 21:00:48.881528000 -0300
+++ 001/win32/src/PyWinObjects.h	2015-04-09 21:01:55.881645000 -0300
@@ -49,7 +49,7 @@
     PyObject *str();
     PyObject *repr();
     int compare(PyObject *ob);
-    PyObject *PyTime::richcompare(PyObject *other, int op);
+    PyObject *richcompare(PyObject *other, int op);
 
     int print(FILE *fp, int flags);
     Py_hash_t hash(void);
diff -aur 000/win32/src/PyWinTypesmodule.cpp 001/win32/src/PyWinTypesmodule.cpp
--- 000/win32/src/PyWinTypesmodule.cpp	2015-04-09 21:00:48.990903200 -0300
+++ 001/win32/src/PyWinTypesmodule.cpp	2015-04-09 21:01:55.897264900 -0300
@@ -1119,7 +1119,7 @@
 // Function to format a python traceback into a character string.
 #define GPEM_ERROR(what)                                     \
     {                                                        \
-        errorMsg = "<Error getting traceback - "##what##">"; \
+        errorMsg = "<Error getting traceback - " what ">"; \
         goto done;                                           \
     }
 PYWINTYPES_EXPORT char *GetPythonTraceback(PyObject *exc_type, PyObject *exc_value, PyObject *exc_tb)
--- 000/win32/src/win32crypt/win32cryptmodule.cpp	2015-04-09 21:00:49.194027800 -0300
+++ 001/win32/src/win32crypt/win32cryptmodule.cpp	2015-04-09 21:02:02.397275800 -0300
@@ -581,44 +581,37 @@
         pvPara = (void *)&cssrp;
     }
     else {
-        switch ((ULONG_PTR)StoreProvider) {
-            case CERT_STORE_PROV_PHYSICAL:
-            case CERT_STORE_PROV_FILENAME:
-            case CERT_STORE_PROV_SYSTEM:
-            case CERT_STORE_PROV_SYSTEM_REGISTRY:
-            case CERT_STORE_PROV_LDAP: {
+        if (StoreProvider == CERT_STORE_PROV_PHYSICAL ||
+            StoreProvider == CERT_STORE_PROV_FILENAME ||
+            StoreProvider == CERT_STORE_PROV_SYSTEM ||
+            StoreProvider == CERT_STORE_PROV_SYSTEM_REGISTRY ||
+            StoreProvider == CERT_STORE_PROV_LDAP) {
                 if (!PyWinObject_AsWCHAR(obpvPara, (WCHAR **)&pvPara))
                     return NULL;
                 free_wchar = TRUE;
-                break;
-            }
-            case CERT_STORE_PROV_REG: {
+        }
+        else if (StoreProvider == CERT_STORE_PROV_REG) {
                 if (!PyWinObject_AsHKEY(obpvPara, (HKEY *)&pvPara))
                     return NULL;
-                break;
-            }
-            case CERT_STORE_PROV_FILE: {
+        }
+        else if (StoreProvider == CERT_STORE_PROV_FILE) {
                 if (!PyWinObject_AsHANDLE(obpvPara, (HANDLE *)&pvPara))
                     return NULL;
-                break;
-            }
-            case CERT_STORE_PROV_SERIALIZED:
-            case CERT_STORE_PROV_PKCS7: {
+        }
+        else if (StoreProvider == CERT_STORE_PROV_SERIALIZED ||
+            StoreProvider == CERT_STORE_PROV_PKCS7) {
                 if (!PyWinObject_AsReadBuffer(obpvPara, (void **)&crypt_data_blob.pbData, &crypt_data_blob.cbData))
                     return NULL;
                 pvPara = (void *)&crypt_data_blob;
-                break;
-            }
-            case CERT_STORE_PROV_MEMORY: {
+        }
+        else if (StoreProvider == CERT_STORE_PROV_MEMORY) {
                 // pvPara is not used, warn if something passed in
                 if (obpvPara != Py_None)
                     PyErr_Warn(PyExc_RuntimeWarning, "Para ignored for CERT_STORE_PROV_MEMORY");
-                break;
-            }
-            default: {
+        }
+        else {
                 PyErr_SetString(PyExc_NotImplementedError, "Specified store provider type not supported");
                 return NULL;
-            }
         }
     }
 
diff -aur 000/win32/src/win32evtlog.i 001/win32/src/win32evtlog.i
--- 000/win32/src/win32evtlog.i	2015-04-09 21:00:49.256528100 -0300
+++ 001/win32/src/win32evtlog.i	2015-04-09 21:02:02.397275800 -0300
@@ -1206,6 +1206,14 @@
 }
 PyCFunction pfnPyEvtUpdateBookmark = (PyCFunction) PyEvtUpdateBookmark;
 
+#ifndef EVT_VARIANT_TYPE_ARRAY
+#define EVT_VARIANT_TYPE_ARRAY 128
+#endif
+
+#ifndef EVT_VARIANT_TYPE_MASK
+#define EVT_VARIANT_TYPE_MASK 0x7F
+#endif
+
 PyObject *PyList_FromEVT_VARIANTArray(PEVT_VARIANT val)
 {
 	if ((val->Type & EVT_VARIANT_TYPE_ARRAY) == 0) {
diff -aur 000/win32/src/win32file_comm.cpp 001/win32/src/win32file_comm.cpp
--- 000/win32/src/win32file_comm.cpp	2015-04-09 21:00:49.490903600 -0300
+++ 001/win32/src/win32file_comm.cpp	2015-04-09 21:02:02.412900800 -0300
@@ -163,7 +163,7 @@
 PyDCB::~PyDCB(void) {}
 
 #define GET_BITFIELD_ENTRY(bitfield_name) \
-    else if (strcmp(name, #bitfield_name) == 0) { return PyInt_FromLong(pydcb->m_DCB.##bitfield_name); }
+    else if (strcmp(name, #bitfield_name) == 0) { return PyInt_FromLong(pydcb->m_DCB.bitfield_name); }
 
 PyObject *PyDCB::getattro(PyObject *self, PyObject *obname)
 {
@@ -198,7 +198,7 @@
             PyErr_Format(PyExc_TypeError, szNeedIntAttr, #bitfield_name); \
             return -1;                                                    \
         }                                                                 \
-        pydcb->m_DCB.##bitfield_name = PyInt_AsLong(v);                   \
+        pydcb->m_DCB.bitfield_name = PyInt_AsLong(v);                     \
         return 0;                                                         \
     }
 
@@ -362,7 +362,7 @@
 
 #undef GET_BITFIELD_ENTRY
 #define GET_BITFIELD_ENTRY(bitfield_name) \
-    else if (strcmp(name, #bitfield_name) == 0) { return PyInt_FromLong(pyCOMSTAT->m_COMSTAT.##bitfield_name); }
+    else if (strcmp(name, #bitfield_name) == 0) { return PyInt_FromLong(pyCOMSTAT->m_COMSTAT.bitfield_name); }
 
 PyObject *PyCOMSTAT::getattro(PyObject *self, PyObject *obname)
 {
@@ -391,7 +391,7 @@
             PyErr_Format(PyExc_TypeError, szNeedIntAttr, #bitfield_name); \
             return -1;                                                    \
         }                                                                 \
-        pyCOMSTAT->m_COMSTAT.##bitfield_name = PyInt_AsLong(v);           \
+        pyCOMSTAT->m_COMSTAT.bitfield_name = PyInt_AsLong(v);           \
         return 0;                                                         \
     }
 
diff -aur 000/win32/src/win32inet.i 001/win32/src/win32inet.i
--- 000/win32/src/win32inet.i	2015-04-09 21:00:49.569028200 -0300
+++ 001/win32/src/win32inet.i	2015-04-09 21:02:02.428526500 -0300
@@ -7,6 +7,22 @@
 #include "Windows.h"
 #include "WinInet.h"
 #undef BOOLAPI // wininet.h defines this!
+
+#ifndef INTERNET_OPTION_CODEPAGE_PATH
+#define INTERNET_OPTION_CODEPAGE_PATH 100
+#endif
+
+#ifndef INTERNET_OPTION_CODEPAGE_EXTRA
+#define INTERNET_OPTION_CODEPAGE_EXTRA 101
+#endif
+
+#ifndef INTERNET_OPTION_IDN
+#define INTERNET_OPTION_IDN 102
+#endif
+
+#ifndef INTERNET_OPTION_HTTP_DECODING
+#define INTERNET_OPTION_HTTP_DECODING 65
+#endif
 %}
 
 %include "typemaps.i"
diff -aur 000/win32/src/win32pdhmodule.cpp 001/win32/src/win32pdhmodule.cpp
--- 000/win32/src/win32pdhmodule.cpp	2015-04-09 21:00:49.662779100 -0300
+++ 001/win32/src/win32pdhmodule.cpp	2015-04-09 21:02:02.444150800 -0300
@@ -1005,7 +1005,7 @@
     {                                                             \
         if (i < seqLen) {                                         \
             PyObject *subItem = PyTuple_GET_ITEM(flags_tuple, i); \
-            myCfg.cfg.##r = PyObject_IsTrue(subItem);             \
+            myCfg.cfg.r = PyObject_IsTrue(subItem);               \
         }                                                         \
     }
 
diff -aur 000/win32/src/win32service.i 001/win32/src/win32service.i
--- 000/win32/src/win32service.i	2015-04-09 21:00:49.990904900 -0300
+++ 001/win32/src/win32service.i	2015-04-09 21:02:02.475400700 -0300
@@ -57,6 +57,13 @@
 		if (fp!=NULL)
 			fpEnumServicesStatusEx=(EnumServicesStatusExfunc)fp;
 		}
+#ifndef SERVICE_CONTROL_PRESHUTDOWN
+#define SERVICE_CONTROL_PRESHUTDOWN 0x0000000F
+#endif
+
+#ifndef SERVICE_ACCEPT_PRESHUTDOWN
+#define SERVICE_ACCEPT_PRESHUTDOWN 0x00000100
+#endif
 %}
 
 %{
--- 000/com/win32comext/mapi/src/mapi_headers/mapidefs.h	2020-06-13 08:39:03.000000000 +0300
+++ 001/com/win32comext/mapi/src/mapi_headers/mapidefs.h	2020-06-19 16:10:51.180079900 +0300
@@ -2728,5 +2728,4 @@
 #endif
 
 #endif /* MAPIDEFS_H */
-
 
--- 000/com/win32comext/mapi/src/mapi_headers/MAPICode.h	2020-06-13 08:39:03.000000000 +0300
+++ 001/com/win32comext/mapi/src/mapi_headers/MAPICode.h	2020-06-19 16:11:57.872096400 +0300
@@ -216,5 +216,4 @@
 #endif
 
 #endif	/* MAPICODE_H */
-
 
--- 000/com/win32comext/mapi/src/mapi_headers/MSPST.h	2020-06-13 08:39:03.000000000 +0300
+++ 001/com/win32comext/mapi/src/mapi_headers/MSPST.h	2020-06-19 16:12:52.572096500 +0300
@@ -97,5 +97,4 @@
                                 0xd9, 0x6e, 0x00, 0x00 }
 
 #endif  /* _MSPST_H_ */
-
 
--- 000/com/win32comext/mapi/src/mapi_headers/MAPIForm.h	2020-06-13 08:39:03.000000000 +0300
+++ 001/com/win32comext/mapi/src/mapi_headers/MAPIForm.h	2020-06-20 13:20:38.548390500 +0300
@@ -631,5 +631,4 @@
 
 #endif							/* MAPIFORM_H */
 
-
 
--- 000/com/win32comext/mapi/src/PyIMAPIAdviseSink.cpp	2020-06-13 08:39:03.000000000 +0300
+++ 001/com/win32comext/mapi/src/PyIMAPIAdviseSink.cpp	2020-06-20 13:17:46.660390600 +0300
@@ -6,6 +6,10 @@
 #include "PyMAPIUtil.h"
 #include "PyIMAPIAdviseSink.h"
 
+#ifdef __MINGW32__
+#define __FUNCSIG__ __PRETTY_FUNCTION__
+#endif
+
 // @doc - This file contains autoduck documentation
 // ---------------------------------------------------
 //
