From 663f1a707d25c490f66c2208c889fa887420e083 Mon Sep 17 00:00:00 2001
From: Jef Driesen <jefdriesen@telenet.be>
Date: Mon, 12 Dec 2022 19:27:20 +0100
Subject: [PATCH] Link gcc helpers statically on MinGW (#488)

When compiling a 32bit dll with the mingw-w64 compiler, some 64bit
integer arithmetic operations are implemented using functions from
libgcc (e.g. __udivdi3 and __umoddi3 from libgcc_s_dw2-1.dll). This
unexpected dependency is inconvenient for applications.

The run-time dependency can be avoid by linking statically.
---
 configure.ac | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/configure.ac b/configure.ac
index 5d05e45bc..cc7ceaca0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -123,6 +123,7 @@ case $host in
 	os="windows"
 	threads="windows"
 	win_implementation="mingw"
+	LDFLAGS="${LDFLAGS} -static-libgcc"
 	;;
 *-msys*)
 	AC_MSG_RESULT([ (Windows back-end, using MSYS2)])
@@ -130,6 +131,7 @@ case $host in
 	os="windows"
 	threads="windows"
 	win_implementation="mingw"
+	LDFLAGS="${LDFLAGS} -static-libgcc"
 	;;
 *-cygwin*)
 	AC_MSG_RESULT([ (Windows back-end, using Cygwin)])