maybe LINUX_VERSION_CODE is from the original ubuntu header /usr/include/linux/version.h ? here is the diff root@vincent-hp:/home/vincent/xtables-addons# diff -u /usr/include/linux/version.h /usr/src/linux-headers-3.13.0-rc2-custom/include/linux/version.h --- /usr/include/linux/version.h 2013-12-04 16:12:56.391368993 -0800 +++ /usr/src/linux-headers-3.13.0-rc2-custom/include/linux/version.h 2013-10-11 12:58:33.000000000 -0700 @@ -1,2 +1,2 @@ -#define LINUX_VERSION_CODE 132640 +#define LINUX_VERSION_CODE 132645 #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c)) I tried to symbolic link the /usr/include/linux/version.h to /usr/src/linux-headers-3.13.0-rc2-custom/include/linux/version.h. didn't help. On Fri, Dec 6, 2013 at 12:34 PM, Jan Engelhardt <jengelh@xxxxxxx> wrote: > > On Friday 2013-12-06 19:37, Vincent Li wrote: >>checking kernel version that we will build against... 3.13.0.0 in >>/lib/modules/3.13.0-rc2-custom/build >>>> >>>>if [ -n "/lib/modules/3.13.0-rc2-custom/build" ]; then make -C >>>>/lib/modules/3.13.0-rc2-custom/build >>>>M=/usr/src/xtables-addons/extensions modules; fi; >>>>make[3]: Entering directory `/usr/src/linux-headers-3.13.0-rc2-custom' >>>> CC [M] /usr/src/xtables-addons/extensions/compat_xtables.o >>>> CC [M] /usr/src/xtables-addons/extensions/xt_CHAOS.o >>>>In file included from /usr/src/xtables-addons/extensions/xt_CHAOS.c:24: >>>>/usr/src/xtables-addons/extensions/compat_xtables.h:12:3: warning: >>>>#warning Kernels below 3.7 not supported. > > I have no explanation for why your LINUX_VERSION_CODE evaluates > to something < 3.7 despite /build having 3.13 in its Makefiles. -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html