Thanks sysgate, thanks bakunin.

I got from the link that given to me by sysgate somebody who encountered same my problem (collect2: library libgcc_s_pthread not found). HERE the thread's link.

As this guy said in his last reply:
I was able to install the missing library manually to gcc (with the help of an IBM AIX guru.)

I don't understand what he mean by installing the missing library manually to gcc?

• How can I obtain this library?
• How can I install it?

I appreciate your help guys.