Cross-compiling

[Tamas Nagy]

Hello,
 
I'd like to try the cross-compiling option in GCC, which sounds very
impressive. The host platform would be x86, and the target platforms are
IBM AIX, and Sun Solaris. The source code is a simple ANSI-C code,
without any platform specific thing.
 
Is there any documentation, how-to or even experience with such a
scenario? Is any Linux distribution contains packages or precompiled
binaries?
 
Thanks in advance,
Tamas