From a03d827cdffd10380811dab0114c284b2753bcde Mon Sep 17 00:00:00 2001
From: r-a-sattarov <r.a.sattarov@yandex.ru>
Date: Sat, 26 Oct 2019 19:56:09 +0300
Subject: [PATCH] =?UTF-8?q?Force=20activation=20=D0=A1++11=20for=20GCC/Cla?=
 =?UTF-8?q?ng/MCST=20lcc?=
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Added GCC/Clang/MCST lcc compiler check for support of C++11 standard and force activation C++11 flag for compile.
E2K: fixed compile for MCST lcc compiler < 1.24 (default C++ standard in 1.23 is -std=c++03).
---
 neo/CMakeLists.txt | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/neo/CMakeLists.txt b/neo/CMakeLists.txt
index a5db8a03..0724e734 100644
--- a/neo/CMakeLists.txt
+++ b/neo/CMakeLists.txt
@@ -86,6 +86,16 @@ if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID STREQUAL "Clang")
 	#add_definitions(-Wall)
 	add_definitions(-Werror=format-security)
 	add_definitions(-Werror=format)
+	include(CheckCXXCompilerFlag)
+	CHECK_CXX_COMPILER_FLAG("-std=c++11" COMPILER_SUPPORTS_CXX11)
+	CHECK_CXX_COMPILER_FLAG("-std=c++0x" COMPILER_SUPPORTS_CXX0X)
+	if(COMPILER_SUPPORTS_CXX11)
+		add_definitions(-std=c++11)
+	elseif(COMPILER_SUPPORTS_CXX0X)
+		add_definitions(-std=c++0x)
+	else()
+		message(FATAL_ERROR "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support. Please use a different C++ compiler.")
+	endif()
 	if(CPU_TYPE)
 		add_definitions(-DCPUSTRING="${CPU_TYPE}")
 	endif()