Supported Compilers, R2015a, Ubuntu

I got the "need supported compilers" at the end of my installation.

After running around checking wtf, I discovered that

apt-get install build-essential

installs gcc/g++ 4.8.x

When gcc/g++ 4.7.x is required.

apt-get install gcc-4.7 g++-4.7

seems to install the correct compiler.

Do I now need to reinstall the entire package to take advantage of this, or is having them installed sufficient?

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I have just removed these symlinks: sudo rm /usr/bin/g++ /usr/bin/gcc

And created new ones: sudo ln -s /usr/bin/g++-4.7 /usr/bin/g++ sudo ln -s /usr/bin/gcc-4.7 /usr/bin/gcc ... etc

Despite this I am still getting the compilation errors:

[Walter Roberson]

Re-install which entire package?

[Lachlan Simpson]

Matlab - I don't see how I might install any particular package at all.

If I re install the whole lot, I get asked "this is already installed, do you want to overwrite?" at some point, but since my only options are "yes to all", "yes", "no to all" or "no" - ie there is no way to specify particular packages - I can only reinstall it all. In my case this is a head node and work nodes - so 1 complete set of products including the licensing server and x complete set of products without the Licensing server.