From 911620bcd317ba2f20510dc63f7f2cf93e856199 Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Wed, 4 Sep 2024 13:21:13 -0400
Subject: [PATCH] C++20 for clang >= 16

---
 Makefile.bsd | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Makefile.bsd b/Makefile.bsd
index edcc0b58..03b50483 100644
--- a/Makefile.bsd
+++ b/Makefile.bsd
@@ -14,6 +14,8 @@ LDLIBS = -lcrypto -lssl -lz -lpthread -lboost_system -lboost_program_options
 CXXVER := $(shell $(CXX) -dumpversion)
 ifeq (${CXXVER}, "4.2.1") # older clang always returned 4.2.1
 	$(error Compiler too old)
-else # newer versions support C++17
+else ifeq ($(shell expr match ${CXXVER} "1[6-9]"),2) # clang 16 - 19
+	NEEDED_CXXFLAGS += -std=c++20
+else
 	NEEDED_CXXFLAGS = -std=c++17
 endif