Install Doxygen From Source

* Install dependencies
{{{
apt-get install graphviz flex bison
}}}
* Pull git snapshot
{{{
git clone https://github.com/doxygen/doxygen.git && \
cd doxygen
}}}
* Configure and install
{{{
./configure && \
make && \
make install && \
make distclean
}}}
* Updating
{{{
git pull && \
./configure && \
make && \
make install && \
make distclean
}}}