No additional library is required.

This is the procedure to follow to install MUSCLE from source code:

• The archive with the source code is downloaded from its web location in /home/bioubuntu, decompressed and the created folder os moved into /opt/bio/sources.

• This folder should belong to root and its permissions set to 755.

% sudo chown -R root:root /opt/bio/sources/muscle3.7_src
% sudo chmod 755 /opt/bio/sources/muscle3.7_src

• Once you are in /opt/bio/sources/muscle3.7_src, compilation is easily done:

% sudo make

• To make the application available to everyone:

% sudo ln -s /opt/bio/sources/muscle3.7_src/muscle /usr/local/bin/muscle