This approach uses update-alternatives to manage GCC and LLVM/CLANG C/C++ compiler toolchains.
Although tested on Linux Mint 18.3, this approach should work on any Debian based distro or for that matter any Linux distro with update-alternatives
support, provided the packages are installed correctly.
There are 3 files
gcc-alternatives.sh
installs GCC versions 5/6/7 and sets up alternatives forgcc
/g++
/cpp
/gfortran
.llvm-clang-alternatives.sh
installs LLVM and CLANG versions 4/5 and sets up alternatives for various LLVM and CLANG programs includingclang
andclang++
.cc-alternatives.sh
sets up alternatives for thecc
,cxx
, and theld
commands. This script can be used to change systemwide default compiler/linker combination to either GCC or CLANG.
Once these scripts are run you can change the system GCC/CLANG versions by running sudo update-alternatives --config gcc|clang
. To change the default compiler/linker combo used by t