====== Linux installation guide ======

For the user’s convenience, PEGASUS is distributed as a precompiled executive file. No special installation procedure is needed.
However, please be sure that ''g++'', ''gfortran'' compilers and basic ''Qt4'' libraries are already
installed in your system (to be precise, ''libc.so.6'', ''libgfortran.so.3'', ''libstdc++.so.6'', ''libQtGui.so.4'', ''libQtCore.so.4'', ''libQtSvg.so.4'' and ''libqwt.so.6'' are needed). After unpacking the distributive archive, all libraries and data files containing the necessary TMD parton densities in a proton (and conventional parton densities as well) are located inside the PEGASUS home directory (''lib'' and ''data'' folders).

NOTE:
**no calculation is allowed if there are some missing data files in the ''data'' folder.
Location of ''data'' folder could be changed via main menu 
option //Edit -> Path to data folder//.** 

It is recommended to use running script ''PEGASUS.run'', where one
have to only modify the default path to the ''lib'' folder.
Otherwise, the executive file can be just run from a terminal as
<code>
./PEGASUS
</code>

and path to the ''lib'' folder should be specified with
<code>
export LD_LIBRARY_PATH=/path/to/library
</code>

If a long-time calculation is needed, one can run console version as 
<code>
./cPEGASUS filename.pegasus
</code>

with the user-defined setup saved to a configuration file ''filename.pegasus''.

Please send all your remarks to Dr. Maksim Malyshev <malyshev@theory.sinp.msu.ru>