From a49192a135606f36ac75ef80050ac99f9350d613 Mon Sep 17 00:00:00 2001
From: GalaxySnail <me@glxys.nl>
Date: Fri, 9 Dec 2022 22:32:10 +0800
Subject: [PATCH 1/3] define MS_WIN64 for 64bit mingw-w64

---
 PC/pyconfig.h | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/PC/pyconfig.h b/PC/pyconfig.h
index 1a33d4c5a1e4fc..08a26722b0b18f 100644
--- a/PC/pyconfig.h
+++ b/PC/pyconfig.h
@@ -209,6 +209,24 @@ typedef int pid_t;
 
 #endif /* _MSC_VER */
 
+/* ------------------------------------------------------------------------*/
+/* mingw and mingw-w64 define __MINGW32__ */
+#ifdef __MINGW32__
+
+#if !defined(MS_WIN64) && defined(_WIN64)
+#define MS_WIN64
+#endif
+
+#if !defined(MS_WIN32) && defined(_WIN32)
+#define MS_WIN32
+#endif
+
+#if !defined(MS_WINDOWS) && defined(MS_WIN32)
+#define MS_WINDOWS
+#endif
+
+#endif /* __MINGW32__*/
+
 /* ------------------------------------------------------------------------*/
 /* egcs/gnu-win32 defines __GNUC__ and _WIN32 */
 #if defined(__GNUC__) && defined(_WIN32)

From ae6ab60370b31d2b8e4dfdc6e802fa5a178f33c8 Mon Sep 17 00:00:00 2001
From: GalaxySnail <me@glxys.nl>
Date: Fri, 9 Dec 2022 22:48:33 +0800
Subject: [PATCH 2/3] add NEWS

---
 .../next/Windows/2022-12-09-22-47-42.gh-issue-79218.Yiot2e.rst   | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 Misc/NEWS.d/next/Windows/2022-12-09-22-47-42.gh-issue-79218.Yiot2e.rst

diff --git a/Misc/NEWS.d/next/Windows/2022-12-09-22-47-42.gh-issue-79218.Yiot2e.rst b/Misc/NEWS.d/next/Windows/2022-12-09-22-47-42.gh-issue-79218.Yiot2e.rst
new file mode 100644
index 00000000000000..e2e6ca3c7796e0
--- /dev/null
+++ b/Misc/NEWS.d/next/Windows/2022-12-09-22-47-42.gh-issue-79218.Yiot2e.rst
@@ -0,0 +1 @@
+Define ``MS_WIN64`` for Mingw-w64 64bit, fix cython compilation failure.

From ae312e4d2bcfbf9a5bead1d9376af4a9d89346e2 Mon Sep 17 00:00:00 2001
From: GalaxySnail <me@glxys.nl>
Date: Fri, 9 Dec 2022 23:32:06 +0800
Subject: [PATCH 3/3] only define `MS_WIN64`

---
 PC/pyconfig.h | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/PC/pyconfig.h b/PC/pyconfig.h
index 08a26722b0b18f..1d8408b363a66a 100644
--- a/PC/pyconfig.h
+++ b/PC/pyconfig.h
@@ -213,18 +213,10 @@ typedef int pid_t;
 /* mingw and mingw-w64 define __MINGW32__ */
 #ifdef __MINGW32__
 
-#if !defined(MS_WIN64) && defined(_WIN64)
+#ifdef _WIN64
 #define MS_WIN64
 #endif
 
-#if !defined(MS_WIN32) && defined(_WIN32)
-#define MS_WIN32
-#endif
-
-#if !defined(MS_WINDOWS) && defined(MS_WIN32)
-#define MS_WINDOWS
-#endif
-
 #endif /* __MINGW32__*/
 
 /* ------------------------------------------------------------------------*/