uClibc usable for non-linux apps?

[stl]

Hello all,
I would like to replace newlib with uClibc in my cross compiler.
But I am wondering if it is feasible for a non-linux application..

I already have compiled a linux cross-compiler, but I would like to use it
to run any applications, even if it is not for linux.

I read lots of stuff, and it seems uClibc is only for linux use.
Is it true?

Thanks in advance for your help.