OK, I should read all posts not only the last one.

I made:
with the new one

$iproute2-j1939> make CC=powerpc-603e-linux-gnu-gcc

same error "AF-CAN" undeclared



$can-j1939-modules>make KERNEL_DIR=<...> C=powerpc-603e-linux\
-gnu-gcc

make[1]: *** No rule to make target `modules'.  Stop.
make: *** [modules] Error 2

So do you think I have to replace the can.h in the
kernel_header_path
(/,.../sysroot-target/kernel-headers/include/linux)?

--Wolfgang