Why the file OpenSees in 'bin' folder is a shared library

[TPdct]

I downloaded opensees source code from svn. I'm using Ubuntu16.10 64bit.
After compilation, a new file 'OpenSees' is generated in the 'bin' folder. But this file is a shared library file, not an executable file. Why? How can I run it?
No any errors during compilation

[fmk]

the library should be in the lib directory .. check if /lib/libOpenSees.a exists .. if it does and OpenSees.exe exists in the bin directory it should be an executable .. change it to be executable and try running it