Calculix 
 Installation on Linux (Debian Based, Ubuntu, Mint) 
 Version 2.12 (Two.Twelve) 
To install version 2.12 
1. sudo apt-get install build-essential gfortran libarpack2-dev libspooles-dev 
2. Download the source code from Calculix site  www.dhondt.de  or from this link  CCX 2.12  
3. Unpack the file ccx_2.12.src.tar.bz2 in a folder and substitute the Makefile inside the src folder with this  Makefile 
4. Open the terminal in this folder and type make
 Version 2.11 (Two.Eleven) 
To install version 2.11 
1. sudo apt-get install build-essential gfortran libarpack2-dev libspooles-dev 
2. Download the source code from Calculix site  www.dhondt.de  or from this link  CCX 2.11  
3. Unpack the file ccx_2.11.src.tar.bz2 in a folder and substitute the Makefile inside the src folder with this  Makefile 
4. Open the terminal in this folder and type make