# -*- autoconf -*-
-# Copyright (c) 2008, 2009, 2010 Nicira Networks.
+# Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# See the License for the specific language governing permissions and
# limitations under the License.
-dnl OVS_CHECK_LINUX26
+dnl OVS_ENABLE_WERROR
+AC_DEFUN([OVS_ENABLE_WERROR],
+ [AC_ARG_ENABLE(
+ [Werror],
+ [AC_HELP_STRING([--enable-Werror], [Add -Werror to CFLAGS])],
+ [], [enable_Werror=no])
+ AC_CONFIG_COMMANDS_PRE(
+ [if test "X$enable_Werror" = Xyes; then
+ CFLAGS="$CFLAGS -Werror"
+ fi])])
+
+dnl OVS_CHECK_LINUX
dnl
dnl Configure linux kernel source tree
-AC_DEFUN([OVS_CHECK_LINUX26], [
+AC_DEFUN([OVS_CHECK_LINUX], [
AC_ARG_WITH([l26],
[AC_HELP_STRING([--with-l26=/path/to/linux-2.6],
[Specify the linux 2.6 kernel build directory])],
- [KBUILD26="$withval"], [KBUILD26=])dnl
+ [KBUILD="$withval"], [KBUILD=])dnl
AC_ARG_WITH([l26-source],
[AC_HELP_STRING([--with-l26-source=/path/to/linux-2.6-source],
[Specify the linux 2.6 kernel source directory
(usually figured out automatically from build
directory)])],
- [KSRC26="$withval"], [KSRC26=])dnl
- if test -n "$KBUILD26"; then
- KBUILD26=`eval echo "$KBUILD26"`
- case $KBUILD26 in
+ [KSRC="$withval"], [KSRC=])dnl
+ if test -n "$KBUILD"; then
+ KBUILD=`eval echo "$KBUILD"`
+ case $KBUILD in
/*) ;;
- *) KBUILD26=`pwd`/$KBUILD26 ;;
+ *) KBUILD=`pwd`/$KBUILD ;;
esac
# The build directory is what the user provided.
# Make sure that it exists.
AC_MSG_CHECKING([for Linux 2.6 build directory])
- if test -d "$KBUILD26"; then
- AC_MSG_RESULT([$KBUILD26])
- AC_SUBST(KBUILD26)
+ if test -d "$KBUILD"; then
+ AC_MSG_RESULT([$KBUILD])
+ AC_SUBST(KBUILD)
else
AC_MSG_RESULT([no])
- AC_ERROR([source dir $KBUILD26 doesn't exist])
+ AC_ERROR([source dir $KBUILD doesn't exist])
fi
# Debian breaks kernel headers into "source" header and "build" headers.
- # We want the source headers, but $KBUILD26 gives us the "build" headers.
+ # We want the source headers, but $KBUILD gives us the "build" headers.
# Use heuristics to find the source headers.
AC_MSG_CHECKING([for Linux 2.6 source directory])
- if test -n "$KSRC26"; then
- KSRC26=`eval echo "$KSRC26"`
- case $KSRC26 in
+ if test -n "$KSRC"; then
+ KSRC=`eval echo "$KSRC"`
+ case $KSRC in
/*) ;;
- *) KSRC26=`pwd`/$KSRC26 ;;
+ *) KSRC=`pwd`/$KSRC ;;
esac
- if test ! -e $KSRC26/include/linux/kernel.h; then
- AC_MSG_ERROR([$KSRC26 is not a kernel source directory)])
+ if test ! -e $KSRC/include/linux/kernel.h; then
+ AC_MSG_ERROR([$KSRC is not a kernel source directory)])
fi
else
- KSRC26=$KBUILD26
- if test ! -e $KSRC26/include/linux/kernel.h; then
- case `echo "$KBUILD26" | sed 's,/*$,,'` in # (
+ KSRC=$KBUILD
+ if test ! -e $KSRC/include/linux/kernel.h; then
+ case `echo "$KBUILD" | sed 's,/*$,,'` in # (
*/build)
- KSRC26=`echo "$KBUILD26" | sed 's,/build/*$,/source,'`
+ KSRC=`echo "$KBUILD" | sed 's,/build/*$,/source,'`
;; # (
*)
- KSRC26=`(cd $KBUILD26 && pwd -P) | sed 's,-[[^-]]*$,-common,'`
+ KSRC=`(cd $KBUILD && pwd -P) | sed 's,-[[^-]]*$,-common,'`
;;
esac
fi
- if test ! -e $KSRC26/include/linux/kernel.h; then
+ if test ! -e $KSRC/include/linux/kernel.h; then
AC_MSG_ERROR([cannot find source directory (please use --with-l26-source)])
fi
fi
- AC_MSG_RESULT([$KSRC26])
+ AC_MSG_RESULT([$KSRC])
AC_MSG_CHECKING([for kernel version])
- patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$KSRC26/Makefile"`
- sublevel=`sed -n 's/^SUBLEVEL = //p' "$KSRC26/Makefile"`
+ patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$KSRC/Makefile"`
+ sublevel=`sed -n 's/^SUBLEVEL = //p' "$KSRC/Makefile"`
if test -z "$patchlevel" || test -z "$sublevel"; then
AC_ERROR([cannot determine kernel version])
fi
AC_MSG_RESULT([2.$patchlevel.$sublevel])
if test "2.$patchlevel" != '2.6'; then
- if test "$BUILD26" = "$KSRC26"; then
- AC_ERROR([Linux kernel in $KBUILD26 is not version 2.6])
+ if test "$KBUILD" = "$KSRC"; then
+ AC_ERROR([Linux kernel in $KBUILD is not version 2.6])
else
- AC_ERROR([Linux kernel in build tree $KBUILD26 (source tree $KSRC26) is not version 2.6])
+ AC_ERROR([Linux kernel in build tree $KBUILD (source tree $KSRC) is not version 2.6])
fi
fi
- if test ! -e "$KBUILD26"/include/linux/version.h || \
- (test ! -e "$KBUILD26"/include/linux/autoconf.h && \
- test ! -e "$KBUILD26"/include/generated/autoconf.h); then
- AC_MSG_ERROR([Linux kernel source in $KBUILD26 is not configured])
+ if test ! -e "$KBUILD"/include/linux/version.h || \
+ (test ! -e "$KBUILD"/include/linux/autoconf.h && \
+ test ! -e "$KBUILD"/include/generated/autoconf.h); then
+ AC_MSG_ERROR([Linux kernel source in $KBUILD is not configured])
fi
- OVS_CHECK_LINUX26_COMPAT
- elif test -n "$KSRC26"; then
+ OVS_CHECK_LINUX_COMPAT
+ elif test -n "$KSRC"; then
AC_MSG_ERROR([--with-l26-source may not be specified without --with-l26])
fi
- AM_CONDITIONAL(L26_ENABLED, test -n "$KBUILD26")
+ AM_CONDITIONAL(LINUX_ENABLED, test -n "$KBUILD")
])
-dnl OVS_GREP_IFELSE(FILE, REGEX, IF-MATCH, IF-NO-MATCH)
+dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
dnl
dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
+dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
+dnl <REGEX> translated to uppercase.
AC_DEFUN([OVS_GREP_IFELSE], [
AC_MSG_CHECKING([whether $2 matches in $1])
if test -f $1; then
case $status in
0)
AC_MSG_RESULT([yes])
- $3
+ m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
;;
1)
AC_MSG_RESULT([no])
])
AC_DEFUN([OVS_CHECK_LOG2_H], [
- AC_MSG_CHECKING([for $KSRC26/include/linux/log2.h])
- if test -e $KSRC26/include/linux/log2.h; then
+ AC_MSG_CHECKING([for $KSRC/include/linux/log2.h])
+ if test -e $KSRC/include/linux/log2.h; then
AC_MSG_RESULT([yes])
OVS_DEFINE([HAVE_LOG2_H])
else
fi
])
-dnl OVS_CHECK_LINUX26_COMPAT
+dnl OVS_CHECK_LINUX_COMPAT
dnl
dnl Runs various Autoconf checks on the Linux 2.6 kernel source in
-dnl the directory in $KBUILD26.
-AC_DEFUN([OVS_CHECK_LINUX26_COMPAT], [
+dnl the directory in $KBUILD.
+AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
rm -f datapath/linux-2.6/kcompat.h.new
mkdir -p datapath/linux-2.6
: > datapath/linux-2.6/kcompat.h.new
- OVS_GREP_IFELSE([$KSRC26/include/linux/err.h], [ERR_CAST],
- [OVS_DEFINE([HAVE_ERR_CAST])])
+ OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
+ [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
+
+ OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
- OVS_GREP_IFELSE([$KSRC26/include/linux/in.h], [ipv4_is_multicast],
- [OVS_DEFINE([HAVE_IPV4_IS_MULTICAST])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
- OVS_GREP_IFELSE([$KSRC26/include/linux/netdevice.h], [dev_disable_lro],
- [OVS_DEFINE([HAVE_DEV_DISABLE_LRO])])
- OVS_GREP_IFELSE([$KSRC26/include/linux/netdevice.h], [dev_get_stats],
- [OVS_DEFINE([HAVE_DEV_GET_STATS])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
+ OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
+ OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
+ OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
+ [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
+ [rcu_read_lock_held])])
+
# Check for the proto_data_valid member in struct sk_buff. The [^@]
# is necessary because some versions of this header remove the
# member but retain the kerneldoc comment that describes it (which
# starts with @). The brackets must be doubled because of m4
# quoting rules.
- OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [[[^@]]proto_data_valid],
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
[OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
- OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [raw],
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [raw],
[OVS_DEFINE([HAVE_MAC_RAW])])
- OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_dst(],
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
[OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
- OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h],
- [skb_copy_from_linear_data_offset],
- [OVS_DEFINE([HAVE_SKB_COPY_FROM_LINEAR_DATA_OFFSET])])
- OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_cow_head],
- [OVS_DEFINE([HAVE_SKB_COW_HEAD])])
- OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_transport_header],
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
+ [skb_copy_from_linear_data_offset])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_transport_header],
[OVS_DEFINE([HAVE_SKBUFF_HEADER_HELPERS])])
- OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_warn_if_lro],
+ OVS_GREP_IFELSE([$KSRC/include/linux/icmpv6.h], [icmp6_hdr],
+ [OVS_DEFINE([HAVE_ICMP6_HDR])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
[OVS_DEFINE([HAVE_SKB_WARN_LRO])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
- OVS_GREP_IFELSE([$KSRC26/include/linux/string.h $KSRC26/include/linux/slab.h],
- [kmemdup], [OVS_DEFINE([HAVE_KMEMDUP])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/string.h], [kmemdup], [],
+ [OVS_GREP_IFELSE([$KSRC/include/linux/slab.h], [kmemdup])])
- OVS_GREP_IFELSE([$KSRC26/include/linux/types.h], [bool],
+ OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
[OVS_DEFINE([HAVE_BOOL_TYPE])])
- OVS_GREP_IFELSE([$KSRC26/include/linux/types.h], [__wsum],
+ OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
[OVS_DEFINE([HAVE_CSUM_TYPES])])
- OVS_GREP_IFELSE([$KSRC26/include/net/checksum.h], [csum_unfold],
- [OVS_DEFINE([HAVE_CSUM_UNFOLD])])
+ OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
+ OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
+
+ OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [NLA_NUL_STRING])
+ OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
+ OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
- OVS_GREP_IFELSE([$KSRC26/include/net/netlink.h], [NLA_NUL_STRING],
- [OVS_DEFINE([HAVE_NLA_NUL_STRING])])
- OVS_GREP_IFELSE([$KSRC26/include/net/netlink.h], [nla_get_be16],
- [OVS_DEFINE([HAVE_NLA_GET_BE16])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
+
+ OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
+ [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
OVS_CHECK_LOG2_H
[$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
dnl ----------------------------------------------------------------------
+
+dnl Check for too-old XenServer.
+AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
+ [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
+ [if test -e /etc/redhat-release; then
+ ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
+ fi
+ if test -z "$ovs_cv_xsversion"; then
+ ovs_cv_xsversion=none
+ fi])
+ case $ovs_cv_xsversion in
+ none)
+ ;;
+
+ [[1-9]][[0-9]]* | dnl XenServer 10 or later
+ [[6-9]]* | dnl XenServer 6 or later
+ 5.[[7-9]]* | dnl XenServer 5.7 or later
+ 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
+ 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
+ 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
+ ;;
+
+ *)
+ AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
+ ;;
+ esac])
+
+dnl OVS_MAKE_HAS_IF([if-true], [if-false])
+dnl
+dnl Checks whether make has the GNU make $(if condition,then,else) extension.
+dnl Runs 'if-true' if so, 'if-false' otherwise.
+AC_DEFUN([OVS_MAKE_HAS_IF],
+ [AC_CACHE_CHECK(
+ [whether ${MAKE-make} has GNU make \$(if) extension],
+ [ovs_cv_gnu_make_if],
+ [cat <<'EOF' > conftest.mk
+conftest.out:
+ echo $(if x,y,z) > conftest.out
+.PHONY: all
+EOF
+ rm -f conftest.out
+ AS_ECHO(["$as_me:$LINENO: invoking ${MAKE-make} -f conftest.mk all:"]) >&AS_MESSAGE_LOG_FD 2>&1
+ ${MAKE-make} -f conftest.mk conftest.out >&AS_MESSAGE_LOG_FD 2>&1
+ AS_ECHO(["$as_me:$LINENO: conftest.out contains:"]) >&AS_MESSAGE_LOG_FD 2>&1
+ cat conftest.out >&AS_MESSAGE_LOG_FD 2>&1
+ result=`cat conftest.out`
+ rm -f conftest.mk conftest.out
+ if test "X$result" = "Xy"; then
+ ovs_cv_gnu_make_if=yes
+ else
+ ovs_cv_gnu_make_if=no
+ fi])
+ AS_IF([test $ovs_cv_gnu_make_if = yes], [$1], [$2])])
+
+dnl OVS_ENABLE_SPARSE
+AC_DEFUN([OVS_ENABLE_SPARSE],
+ [OVS_MAKE_HAS_IF(
+ [AC_CONFIG_COMMANDS_PRE(
+ [: ${SPARSE=sparse}
+ AC_SUBST([SPARSE])
+ CC='$(if $(C),REAL_CC="'"$CC"'" CHECK="$(SPARSE) -I $(top_srcdir)/include/sparse" cgcc,'"$CC"')'])])])