Socket programming in QNX

When I wanted to compile NetPIPE latency measuring tool on QNX platform. It gave me warnings saying listen(), bind() methods are undefined. I figured out that socket libraries are not linked in NetPIPE make file.
The QNX TCP/IP socket interface is a set of library functions and header files. All memory models of the socket interface library are provided. They're called socketx.lib, where x denotes the memory model. For a description of memory models, see the documentation for the cc utility.
These libraries are installed in the /usr/lib directory.The header files are installed under the /usr/include directory.

Then I added below line to NetPIPE make file to link socket libraries and it compiled perfectly:

cc -l socket