====== Compiling potfit ======
----
Here are some examples on how to compile //potfit//.

===  Cleaning up  ===

Before you compile a new binary you should make sure that there are no old object files in your directory:

<code>make clean</code>

deletes all object files and most temporary files.

===  Setting the options  ===

To compile //potfit// you have to know which options you want to enable. You can find a comprehensive list of all options [[options:main|here]].

Assuming you want a //potfit// binary to optimize EAM potentials and also include stress, you can create it with the command:

<code>make potfit_eam_stress</code>

Basically you can use any name for your binary, as long as the strings 'eam' and 'stress' are included. The command

<code>make my_name-eam+stress-foo.bar-V2</code>

would create the same binary as ''make potfit_eam_stress'', only with a different name.

===  Parallel make  ===

To speed up the compilation (if you are very impatient) you can use the following command

<code>make -j 8 clean potfit_eam_stress</code>

This will use 8 processes in parallel to compile the object files and also clean your directory before compiling a new binary.

====  Custom FLAGS  ====

To pass custom flags to the compiler, you can use the environement variable ''FLAGS''
<code>FLAGS="-fomit-frame-pointer" make potfit_pair_stress</code>