[CMake] How to specify Redhat Developer Toolset compiler?

[Andreas Naumann]

You could set the environment variables CXX and CC such that they point
to your toolset compiler

Am 20.06.19 um 17:39 schrieb David Aldrich:
> My Centos 7.6 machine has CMake 3.13.5 and g++ 4.8.5 installed:
>
> $ /usr/bin/x86_64-redhat-linux-g++ --version
> x86_64-redhat-linux-g++ (GCC) 4.8.5 20150623 (Red Hat 4.8.5-36)
>
> I have a very simple CMakeLists.txt:
>
> cmake_minimum_required(VERSION 3.5 FATAL_ERROR)
> project(hello_world LANGUAGES CXX)
>
> add_executable(hello_world "")
>
> target_sources(hello_world
>   PRIVATE
>     main.cpp
>     Message.hpp
>     Message.cpp)
>
> I also have Redhat Developer Toolset 7 installed which I can enable in
> my bash shell:
>
> $ scl enable devtoolset-7 bash
> $ which g++
> /opt/rh/devtoolset-7/root/usr/bin/g++
> $ g++ --version
> g++ (GCC) 7.3.1 20180303 (Red Hat 7.3.1-5)
>
> How can I get CMake to use the later version of g++ instead of 4.8.5?
>
>