GPL shared library usage in Proprietary code

[Karthik Venkateswaran]

Greetings all,

I have been using GPL code for eternity but always wanted to know how 
proprietary products are working around without violating GPL. 

1. If there is a proprietary program using uClibc or libc (which is GPLv2) 
does it automatically be part of GPL?

2. Would using libdbus (Part of both AFL and GPL) in a proprietary code 
violate the GPL ? (libdbus is a socket communication interface mainly used 
for IPC)

3. In a GPL code like Linux kernel if I add a kernel module part of GPLv3 
would it automatically move on to version 3 of GPL?



Thanks and Regards,
Karthik Venkateswaran


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