When building UML with 'O=foo' specified, I got: CC kernel/bounds.s In file included from /home/wangcong/Projects/linux-2.6/include/linux/types.h:11, from /home/wangcong/Projects/linux-2.6/include/linux/page-flags.h:8, from /home/wangcong/Projects/linux-2.6/kernel/bounds.c:9: /home/wangcong/Projects/linux-2.6/include/linux/posix_types.h:47:29: error: asm/posix_types.h: No such file or directory In file included from /home/wangcong/Projects/linux-2.6/include/linux/page-flags.h:8, from /home/wangcong/Projects/linux-2.6/kernel/bounds.c:9: /home/wangcong/Projects/linux-2.6/include/linux/types.h:12:23: error: asm/types.h: No such file or directory In file included from /home/wangcong/Projects/linux-2.6/include/linux/page-flags.h:8, Below patch fixed it, note, it is only tested for x86 and um. Signed-off-by: WANG Cong <wangcong@xxxxxxxxx> Cc: sam@xxxxxxxxxxxx Cc: jdike@xxxxxxxxxxx --- diff --git a/Makefile b/Makefile index aa527a4..39130d1 100644 --- a/Makefile +++ b/Makefile @@ -930,7 +930,8 @@ ifneq ($(KBUILD_SRC),) /bin/false; \ fi; $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi; - $(Q)if [ -e $(srctree)/include/asm-$(SRCARCH)/system.h ]; then \ + $(Q)if [ -e $(srctree)/include/asm-$(SRCARCH)/system.h -o \ + -e $(objtree)/include/asm-$(SRCARCH)/system.h ] ; then \ ln -fsn $(srctree)/include/asm-$(SRCARCH) include2/asm; \ fi endif -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html