Help for using qryptopp

[unix7777]

i've put several questions in several forums and nobody help me.
If somebody have enough knowledge i'll be very glad to get answers of the questions:

- How to use qrypto libraries? I mean i have some applications that need it.Where t put the folder with files?
In the folder of the project?What to include in the .pro file because when compiling i receive "id returned 1 exit status".

- are there another methods (libraries) for encryption?

THANK YOU IN ADVANCE!

[JD2000]

I'm not sure about the Mac but I believe you usually modify the LIBS variable to include the path to your libraries:

LIBS += /.../mylibs/mylib.lib