Alternatives for clang
In Ubuntu, installing clang-3.6 doesn’t provide you with clang or clang++ links to the clang-3.6 or clang++-3.6 executables, or a way of easily selecting the active clang version when you have multiple versions installed.
This command/script creates a clang group using update-alternatives so you can easily execute clang (without the version number) and switch between different clang versions.
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