Hi Antonio,
I didn't find the ppp package in denx eldk, I tried to cross compile the
sources (from sourceforge) but I received some errors (pcap_t undeclared).
Before I continue I would investigate if someone was already successful with
ppp on ppc.
We compiled pppd v. 2.4.1 with eldk 3.0 on our ppc target with nfs
mount. It was no problem. But compiling this package on our x86 linux
machine (SuSe 9.0) wasn't a problem either after setting the
environment vars CC, LD, AS to appropriate values (ppc_82xx-...).
Bye
Eberhard