From effae02b57f09fe32bb042069595b6b63afafbe7 Mon Sep 17 00:00:00 2001
From: Viktor Szakats <commit@vsz.me>
Date: Sat, 26 Jul 2025 14:46:05 +0200
Subject: [PATCH] autotools: check mingw-w64 version

---
 configure.ac | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/configure.ac b/configure.ac
index 9b1096fcb9..d381cff302 100644
--- a/configure.ac
+++ b/configure.ac
@@ -530,6 +530,26 @@ if test "$curl_cv_native_windows" = "yes"; then
   case "$CPPFLAGS" in
     *-DWINSTORECOMPAT*) curl_cv_winuwp='yes';;
   esac
+
+  case $host_os in
+    mingw*)
+      AC_MSG_CHECKING([if building with mingw-w64 3.0 or upper])
+      AC_COMPILE_IFELSE([
+        AC_LANG_PROGRAM([[
+          #include <_mingw.h>
+        ]],[[
+          #if !defined(__MINGW64_VERSION_MAJOR) || (__MINGW64_VERSION_MAJOR < 6)
+          #error
+          #endif
+        ]])
+      ],[
+        AC_MSG_RESULT([yes])
+      ],[
+        AC_MSG_RESULT([no])
+        AC_MSG_ERROR([Building with mingw-w64 3.0 or upper is required.])
+      ])
+      ;;
+  esac
 fi
 
 CURL_SET_COMPILER_BASIC_OPTS