CFLAGS += -I . ifeq ($(ARCH), __x86_64__) kernel_arch_subdirs:=x86_64 endif all: @list='$(kernel_arch_subdirs)'; for subdir in $$list; do \ echo "make all in $$subdir";\ cd $$subdir;\ $(MAKE) all CFLAGS="$(CFLAGS)" PIC="$(PIC)";\ cd ..;\ done clean: echo "Done."