From bd7a9b4e9318265b4278ecc279f0f4ed3fc3264e Mon Sep 17 00:00:00 2001
From: roker <roker@pep-project.org>
Date: Thu, 30 Sep 2021 14:02:31 +0200
Subject: [PATCH] use LANG_VERSION to switch from C++14 (default) to C++17, if
 necessary

---
 Makefile.conf | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Makefile.conf b/Makefile.conf
index 2b61b84..6c8e93d 100644
--- a/Makefile.conf
+++ b/Makefile.conf
@@ -13,7 +13,7 @@ PREFIX?=$(HOME)
 ENGINE_LIB_PATH=$(PREFIX)/lib
 ENGINE_INC_PATH=$(PREFIX)/include
 
-CXXFLAGS+=-std=c++14 -fPIC
+CXXFLAGS+=-fPIC
 
 # Build target
 BUILD_FOR:=$(shell uname)
@@ -34,6 +34,13 @@ else
     CXXFLAGS+=-DNDEBUG=1 -O3
 endif
 
+ifdef $(LANG_VERSION)
+CXXFLAGS+=-std=$(LANG_VERSION)
+else
+CXXFLAGS+=-std=c++14
+endif
+
+
 # Add -L Prefixes to LIB/INC paths,
 # if not already explicitly set in local.conf
 ifndef ENGINE_LIB