busybox 1.11.1 fails on ppc. modutils/insmod.c does not define ifile for __powerpc__.
Created attachment 162238 [details, diff] busybox-1.11.1-bb.patch with modutils/insmod.c patch
Attached patch fixes the problem for me on: Linux cube 2.6.25-gentoo-r6 #1 Mon Jul 7 12:49:30 PDT 2008 ppc 7400, altivec supported PowerMac5,1 GNU/Linux
incvs, because it broke my G5.