any hints using gcc 3.4.3 for 2.4.25 kernel?

[Wojciech Kromer]

a)first i have:
- 2.4.25 kernel (from denx cvs)
- eldk with 2.95.4 compiler
this one set works fine :)

b)then, i've tried  to same sources with:
gcc-3.4.3 , self build from uClibc buildroot
new hernel hangs just after decompressing :(

any tricks?