Hi, Specifying --arch $(ARCH) unconditionally is what's breaking the sparc kernel build (and it just seems like a bad idea). First, shouldn't we just specify this if we're cross-compiling (ifneq ($(DEB_BUILD_ARCH),$(DEB_HOST_ARCH))) ? Second, --arch's arg needs to match what include/asm points to; how to best handle that, I'm not sure.