Hi! net-fs/nfs-utils doesn't compile on cross-compilation between two different arches, because the compiler is simply 'gcc', and not '${CHOST}-gc'. To fix it, is only needed to export CC in src_compile, with tc-export CC. With the attached patch works to me well between i686, ppc and amd64. Good bye!
Created attachment 87323 [details, diff] nfs-utils-1.0.7-r2.ebuild.patch
use 1.0.8