build: fix --without-kbuild semantics

The --without-build option is useful when your distro has multiple
kernels and/or you want to build a common package for userspace stuff
only. Support this option properly.

diff --git a/configure.ac b/configure.ac
index 347561188ee737f756ea2a2bd2080adfb6f99fc2..28612f44b859d104a5e3f3e40a7cbcb064232d8f 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -9,11 +9,18 @@ AM_PROG_CC_C_O
 AC_DISABLE_STATIC
 AC_PROG_LIBTOOL
 
-kbuilddir="/lib/modules/$(uname -r)/build";
 AC_ARG_WITH([kbuild],
        AS_HELP_STRING([--with-kbuild=PATH],
        [Path to kernel build directory [[/lib/modules/CURRENT/build]]]),
-       [kbuilddir="$withval"])
+       [kbuilddir="$withval"],
+       [kbuilddir="/lib/modules/$(uname -r)/build"])
+#
+# check for --without-kbuild
+#
+if [[ "$kbuilddir" == no ]]; then
+       kbuilddir="";
+fi
+
 AC_ARG_WITH([ksource],,[ksourcedir="$withval"])
 AC_ARG_WITH([xtables],
        AS_HELP_STRING([--with-xtables=PATH],