From bbffb8c285bad68350df12405ef67056e7cbfc47 Mon Sep 17 00:00:00 2001
From: Jay Satiro <raysatiro@yahoo.com>
Date: Fri, 1 Jul 2022 03:02:20 -0400
Subject: [PATCH] easy_lock: fix build for mingw

- Define SRWLOCK symbols missing in some mingw environments.

Closes https://github.com/curl/curl/pull/8997
---
 lib/easy_lock.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/lib/easy_lock.h b/lib/easy_lock.h
index a4db9fe47e..808610f8e5 100644
--- a/lib/easy_lock.h
+++ b/lib/easy_lock.h
@@ -28,6 +28,19 @@
 
 #if defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x600
 
+#ifdef __MINGW32__
+#ifndef __MINGW64_VERSION_MAJOR
+#if (__MINGW32_MAJOR_VERSION < 5) || \
+    (__MINGW32_MAJOR_VERSION == 5 && __MINGW32_MINOR_VERSION == 0)
+/* mingw >= 5.0.1 defines SRWLOCK, and slightly different from MS define */
+typedef PVOID SRWLOCK, *PSRWLOCK;
+#endif
+#endif
+#ifndef SRWLOCK_INIT
+#define SRWLOCK_INIT NULL
+#endif
+#endif /* __MINGW32__ */
+
 #define curl_simple_lock SRWLOCK
 #define CURL_SIMPLE_LOCK_INIT SRWLOCK_INIT
 
-- 
2.47.3