From 0e5ce5515d80d053bf798cfdb4e36fec1b961e3c Mon Sep 17 00:00:00 2001
From: markoburcul <marko@status.im>
Date: Mon, 9 Feb 2026 14:33:28 +0100
Subject: [PATCH] makefile: allow multiple definitions flag for Nim
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Rust includes compiler_builtins crate in rln.lib for low-level ops
GCC (mingw-winlibs) also provides its own implementation of these same builtins
Both are being linked together → conflict
---
 Makefile | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Makefile b/Makefile
index 2f15ccd71..be2bc172c 100644
--- a/Makefile
+++ b/Makefile
@@ -44,6 +44,9 @@ ifeq ($(detected_OS),Windows)
   LIBS = -lws2_32 -lbcrypt -liphlpapi -luserenv -lntdll -lminiupnpc -lnatpmp -lpq
   NIM_PARAMS += $(foreach lib,$(LIBS),--passL:"$(lib)")
 
+  # Allow multiple definitions when linking Rust static library with GCC
+  NIM_PARAMS += --passL:"-Wl,--allow-multiple-definition"
+
   export PATH := /c/msys64/usr/bin:/c/msys64/mingw64/bin:/c/msys64/usr/lib:/c/msys64/mingw64/lib:$(PATH)
 
 endif