From 504f49ee2657886091499532a6d66dacbf920c96 Mon Sep 17 00:00:00 2001
From: Sander Schobers <sander@schobers.eu>
Date: Sat, 23 May 2020 11:58:48 +0200
Subject: [PATCH] Added workaround for a missing symbol when using an old
 mingw64 (e.g. 7.3). Specify the build tag mingw64_7_3 to enable the
 workaround.

---
 c_windows_static_workaround.go | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 c_windows_static_workaround.go

diff --git a/c_windows_static_workaround.go b/c_windows_static_workaround.go
new file mode 100644
index 0000000..8b8a5d7
--- /dev/null
+++ b/c_windows_static_workaround.go
@@ -0,0 +1,17 @@
+// +build windows,static,mingw64_7_3
+
+package allg5
+
+/*
+#define _CRTBLD
+#include <stdio.h>
+
+FILE *__cdecl __acrt_iob_func(unsigned index)
+{
+    return &(__iob_func()[index]);
+}
+
+typedef FILE *__cdecl (*_f__acrt_iob_func)(unsigned index);
+_f__acrt_iob_func __MINGW_IMP_SYMBOL(__acrt_iob_func) = __acrt_iob_func;
+*/
+import "C"