From a057f170c6920fc4d1abdae619c5259e9d80703c Mon Sep 17 00:00:00 2001
From: mstembera <MissingEmail@email>
Date: Sun, 30 Aug 2020 20:48:10 -0700
Subject: [PATCH] Use llvm linker with clang on windows for LTO.

other linkers might fail to link during the LTO phase.

The linker might have to be installed using
`pacman -Syu mingw-w64-x86_64-lld`

closes https://github.com/official-stockfish/Stockfish/pull/3084

No functional change.
---
 src/Makefile | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/Makefile b/src/Makefile
index 9ae5a51c..340b3008 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -595,6 +595,11 @@ ifeq ($(debug), no)
 		LDFLAGS += $(CXXFLAGS)
 	else ifeq ($(comp),clang)
 		CXXFLAGS += -flto=thin
+		ifneq ($(findstring MINGW,$(KERNEL)),)
+			CXXFLAGS += -fuse-ld=lld
+		else ifneq ($(findstring MSYS,$(KERNEL)),)
+			CXXFLAGS += -fuse-ld=lld
+		endif
 		LDFLAGS += $(CXXFLAGS)
 
 # GCC and CLANG use different methods for parallelizing LTO and CLANG pretends to be
-- 
2.39.2