From: Sebastian Buchwald <UniQP@web.de>
Date: Sat, 11 Mar 2023 21:08:35 +0000 (+0100)
Subject: Fix Makefile for clang 16
X-Git-Url: https://git.sesse.net/?a=commitdiff_plain;h=d1e17989b51f220629e4e81a4bf413974f4b18e2;hp=55896a1384b022624a8c33b9f7f51b6b551eed50;p=stockfish

Fix Makefile for clang 16

The clang 16 release will remove the -fexperimental-new-pass-manager
flag (see https://github.com/llvm/llvm-project/commit/69b2b7282e92a1b576b7bd26f3b16716a5027e8e).
Thus, the commit adapts the Makefile to use this flag only for older
clang versions.

closes https://github.com/official-stockfish/Stockfish/pull/4437

No functional change
---

diff --git a/src/Makefile b/src/Makefile
index 774ba6ea..e257bc63 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -584,7 +584,10 @@ ifeq ($(optimize),yes)
 	endif
 
 	ifeq ($(comp),clang)
-		CXXFLAGS += -fexperimental-new-pass-manager
+		clangmajorversion = $(shell $(CXX) -dumpversion 2>/dev/null | cut -f1 -d.)
+		ifeq ($(shell expr $(clangmajorversion) \< 16),1)
+			CXXFLAGS += -fexperimental-new-pass-manager
+		endif
 	endif
 endif