fi
])
+AC_DEFUN([OVS_CHECK_GRE], [
+ AC_MSG_CHECKING([whether to build gre module])
+ if test "$sublevel" -ge 18; then
+ AC_MSG_RESULT([yes])
+ AC_SUBST([BUILD_GRE], 1)
+ else
+ AC_MSG_RESULT([no])
+ fi
+])
+
AC_DEFUN([OVS_CHECK_LOG2_H], [
AC_MSG_CHECKING([for $KSRC26/include/linux/log2.h])
if test -e $KSRC26/include/linux/log2.h; then
[OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
OVS_CHECK_LOG2_H
OVS_CHECK_VETH
+ OVS_CHECK_GRE
if cmp -s datapath/linux-2.6/kcompat.h.new \
datapath/linux-2.6/kcompat.h >/dev/null 2>&1; then
rm datapath/linux-2.6/kcompat.h.new
dnl OVS_ENABLE_OPTION([OPTION])
dnl Check whether the given C compiler OPTION is accepted.
-dnl If so, add it to CFLAGS.
+dnl If so, add it to WARNING_FLAGS.
dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
AC_DEFUN([OVS_ENABLE_OPTION],
- [OVS_CHECK_CC_OPTION([$1], [CFLAGS="$CFLAGS $1"])])
+ [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
+ AC_SUBST([WARNING_FLAGS])])
dnl ----------------------------------------------------------------------