-the `toolchain testing PPA
-<https://launchpad.net/~ubuntu-toolchain-r/+archive/test>`__ and use it to
-install a modern GCC. There is a really nice discussions of this on the `ask
-ubuntu stack exchange
-<http://askubuntu.com/questions/271388/how-to-install-gcc-4-8-in-ubuntu-12-04-from-the-terminal>`__.
-However, not all users can use PPAs and there are many other distros, so it may
-be necessory (or just useful, if you're here you *are* doing compiler
-development after all) to build and install GCC from source. It is also quite
-easy to do these days.
+the `toolchain testing PPA`_ and use it to install a modern GCC. There is
+a really nice discussions of this on the `ask ubuntu stack exchange`_. However,
+not all users can use PPAs and there are many other distributions, so it may be
+necessary (or just useful, if you're here you *are* doing compiler development
+after all) to build and install GCC from source. It is also quite easy to do
+these days.
+
+.. _toolchain testing PPA:
+ https://launchpad.net/~ubuntu-toolchain-r/+archive/test
+.. _ask ubuntu stack exchange:
+ http://askubuntu.com/questions/271388/how-to-install-gcc-4-8-in-ubuntu-12-04-from-the-terminal