# -*- autoconf -*-
-# Copyright (c) 2008, 2009 Nicira Networks.
+# Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks.
#
-# Permission to use, copy, modify, and/or distribute this software for any
-# purpose with or without fee is hereby granted, provided that the above
-# copyright notice and this permission notice appear in all copies.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
#
-# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
-dnl Checks for --disable-userspace.
-AC_DEFUN([OVS_CHECK_USERSPACE],
- [AC_ARG_ENABLE(
- [userspace],
- [AC_HELP_STRING([--disable-userspace],
- [Disable building userspace components.])],
- [case "${enableval}" in
- (yes) build_userspace=true ;;
- (no) build_userspace=false ;;
- (*) AC_MSG_ERROR([bad value ${enableval} for --enable-userspace]) ;;
- esac],
- [build_userspace=true])
- AM_CONDITIONAL([ENABLE_USERSPACE], [$build_userspace])])
-
-dnl OVS_CHECK_LINUX(OPTION, VERSION, VARIABLE, CONDITIONAL)
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+dnl OVS_CHECK_LINUX26
dnl
dnl Configure linux kernel source tree
-AC_DEFUN([OVS_CHECK_LINUX], [
- AC_ARG_WITH([$1],
- [AC_HELP_STRING([--with-$1=/path/to/linux-$2],
- [Specify the linux $2 kernel sources])],
- [path="$withval"], [path=])dnl
- if test -n "$path"; then
- path=`eval echo "$path"`
-
- AC_MSG_CHECKING([for $path directory])
- if test -d "$path"; then
- AC_MSG_RESULT([yes])
- $3=$path
- AC_SUBST($3)
+AC_DEFUN([OVS_CHECK_LINUX26], [
+ AC_ARG_WITH([l26],
+ [AC_HELP_STRING([--with-l26=/path/to/linux-2.6],
+ [Specify the linux 2.6 kernel build directory])],
+ [KBUILD26="$withval"], [KBUILD26=])dnl
+ 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 $KBUILD26 in
+ /*) ;;
+ *) KBUILD26=`pwd`/$KBUILD26 ;;
+ 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)
else
AC_MSG_RESULT([no])
- AC_ERROR([source dir $path doesn't exist])
+ AC_ERROR([source dir $KBUILD26 doesn't exist])
+ fi
+
+ # Debian breaks kernel headers into "source" header and "build" headers.
+ # We want the source headers, but $KBUILD26 gives us the "build" headers.
+ # Use heuristics to find the source headers.
+ AC_MSG_CHECKING([for Linux 2.6 source directory])
+ if test -n "$KSRC26"; then
+ KSRC26=`eval echo "$KSRC26"`
+ case $KSRC26 in
+ /*) ;;
+ *) KSRC26=`pwd`/$KSRC26 ;;
+ esac
+ if test ! -e $KSRC26/include/linux/kernel.h; then
+ AC_MSG_ERROR([$KSRC26 is not a kernel source directory)])
+ fi
+ else
+ KSRC26=$KBUILD26
+ if test ! -e $KSRC26/include/linux/kernel.h; then
+ case `echo "$KBUILD26" | sed 's,/*$,,'` in # (
+ */build)
+ KSRC26=`echo "$KBUILD26" | sed 's,/build/*$,/source,'`
+ ;; # (
+ *)
+ KSRC26=`(cd $KBUILD26 && pwd -P) | sed 's,-[[^-]]*$,-common,'`
+ ;;
+ esac
+ fi
+ if test ! -e $KSRC26/include/linux/kernel.h; then
+ AC_MSG_ERROR([cannot find source directory (please use --with-l26-source)])
+ fi
fi
+ AC_MSG_RESULT([$KSRC26])
- AC_MSG_CHECKING([for $path kernel version])
- patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$path/Makefile"`
- sublevel=`sed -n 's/^SUBLEVEL = //p' "$path/Makefile"`
+ AC_MSG_CHECKING([for kernel version])
+ patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$KSRC26/Makefile"`
+ sublevel=`sed -n 's/^SUBLEVEL = //p' "$KSRC26/Makefile"`
+ if test -z "$patchlevel" || test -z "$sublevel"; then
+ AC_ERROR([cannot determine kernel version])
+ fi
AC_MSG_RESULT([2.$patchlevel.$sublevel])
- if test "2.$patchlevel" != '$2'; then
- AC_ERROR([Linux kernel source in $path is not version $2])
+ if test "2.$patchlevel" != '2.6'; then
+ if test "$BUILD26" = "$KSRC26"; then
+ AC_ERROR([Linux kernel in $KBUILD26 is not version 2.6])
+ else
+ AC_ERROR([Linux kernel in build tree $KBUILD26 (source tree $KSRC26) is not version 2.6])
+ fi
fi
- if ! test -e "$path"/include/linux/version.h || \
- ! test -e "$path"/include/linux/autoconf.h; then
- AC_MSG_ERROR([Linux kernel source in $path is not configured])
+ if test ! -e "$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])
fi
- m4_if($2, [2.6], [OVS_CHECK_LINUX26_COMPAT])
+ OVS_CHECK_LINUX26_COMPAT
+ elif test -n "$KSRC26"; then
+ AC_MSG_ERROR([--with-l26-source may not be specified without --with-l26])
fi
- AM_CONDITIONAL($4, test -n "$path")
+ AM_CONDITIONAL(L26_ENABLED, test -n "$KBUILD26")
])
-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])
- grep '$2' $1 >/dev/null 2>&1
- status=$?
- case $status in
- 0)
- AC_MSG_RESULT([yes])
- $3
- ;;
- 1)
- AC_MSG_RESULT([no])
- $4
- ;;
- *)
- AC_MSG_ERROR([grep exited with status $status])
- ;;
- esac
+ if test -f $1; then
+ grep '$2' $1 >/dev/null 2>&1
+ status=$?
+ case $status in
+ 0)
+ AC_MSG_RESULT([yes])
+ m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
+ ;;
+ 1)
+ AC_MSG_RESULT([no])
+ $4
+ ;;
+ *)
+ AC_MSG_ERROR([grep exited with status $status])
+ ;;
+ esac
+ else
+ AC_MSG_RESULT([file not found])
+ $4
+ fi
])
dnl OVS_DEFINE(NAME)
echo '#define $1 1' >> datapath/linux-2.6/kcompat.h.new
])
-AC_DEFUN([OVS_CHECK_VETH], [
- AC_MSG_CHECKING([whether to build veth module])
- if test "$sublevel" = 18; then
- AC_MSG_RESULT([yes])
- AC_SUBST([BUILD_VETH], 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
dnl OVS_CHECK_LINUX26_COMPAT
dnl
dnl Runs various Autoconf checks on the Linux 2.6 kernel source in
-dnl the directory in $KSRC26.
+dnl the directory in $KBUILD26.
AC_DEFUN([OVS_CHECK_LINUX26_COMPAT], [
rm -f datapath/linux-2.6/kcompat.h.new
mkdir -p datapath/linux-2.6
: > datapath/linux-2.6/kcompat.h.new
- OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_transport_header],
- [OVS_DEFINE([HAVE_SKBUFF_HEADER_HELPERS])])
+
+ OVS_GREP_IFELSE([$KSRC26/arch/x86/include/asm/checksum_32.h], [src_err,],
+ [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
+
+ OVS_GREP_IFELSE([$KSRC26/include/linux/err.h], [ERR_CAST])
+
+ OVS_GREP_IFELSE([$KSRC26/include/linux/in.h], [ipv4_is_multicast])
+
+ OVS_GREP_IFELSE([$KSRC26/include/linux/netdevice.h], [dev_disable_lro])
+ OVS_GREP_IFELSE([$KSRC26/include/linux/netdevice.h], [dev_get_stats])
+ OVS_GREP_IFELSE([$KSRC26/include/linux/netdevice.h], [dev_get_by_index_rcu])
+
+ OVS_GREP_IFELSE([$KSRC26/include/linux/rcupdate.h], [rcu_read_lock_held], [],
+ [OVS_GREP_IFELSE([$KSRC26/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([$KSRC26/include/linux/skbuff.h], [[[^@]]proto_data_valid],
+ [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [raw],
[OVS_DEFINE([HAVE_MAC_RAW])])
+ OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_dst(],
+ [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h],
- [skb_copy_from_linear_data_offset],
- [OVS_DEFINE([HAVE_SKB_COPY_FROM_LINEAR_DATA_OFFSET])])
- OVS_GREP_IFELSE([$KSRC26/include/net/netlink.h], [NLA_NUL_STRING],
- [OVS_DEFINE([HAVE_NLA_NUL_STRING])])
- OVS_GREP_IFELSE([$KSRC26/include/linux/err.h], [ERR_CAST],
- [OVS_DEFINE([HAVE_ERR_CAST])])
+ [skb_copy_from_linear_data_offset])
+ OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_cow_head])
+ OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_transport_header],
+ [OVS_DEFINE([HAVE_SKBUFF_HEADER_HELPERS])])
+ OVS_GREP_IFELSE([$KSRC26/include/linux/icmpv6.h], [icmp6_hdr],
+ [OVS_DEFINE([HAVE_ICMP6_HDR])])
+ OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_warn_if_lro],
+ [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
+
+ OVS_GREP_IFELSE([$KSRC26/include/linux/string.h], [kmemdup], [],
+ [OVS_GREP_IFELSE([$KSRC26/include/linux/slab.h], [kmemdup])])
+
+ OVS_GREP_IFELSE([$KSRC26/include/linux/types.h], [bool],
+ [OVS_DEFINE([HAVE_BOOL_TYPE])])
+ OVS_GREP_IFELSE([$KSRC26/include/linux/types.h], [__wsum],
+ [OVS_DEFINE([HAVE_CSUM_TYPES])])
+
+ OVS_GREP_IFELSE([$KSRC26/include/net/checksum.h], [csum_replace4])
+ OVS_GREP_IFELSE([$KSRC26/include/net/checksum.h], [csum_unfold])
+
+ OVS_GREP_IFELSE([$KSRC26/include/net/netlink.h], [NLA_NUL_STRING])
+ OVS_GREP_IFELSE([$KSRC26/include/net/netlink.h], [nla_get_be16])
+ OVS_GREP_IFELSE([$KSRC26/include/net/netlink.h], [nla_find_nested])
+
+ OVS_GREP_IFELSE([$KSRC26/include/linux/if_link.h], [rtnl_link_stats64])
+
+ OVS_GREP_IFELSE([$KSRC26/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
+ [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
+
OVS_CHECK_LOG2_H
- OVS_CHECK_VETH
+
if cmp -s datapath/linux-2.6/kcompat.h.new \
datapath/linux-2.6/kcompat.h >/dev/null 2>&1; then
rm datapath/linux-2.6/kcompat.h.new
char *token1, *token2;
token1 = strtok_r(string, ":", &save_ptr);
token2 = strtok_r(NULL, ":", &save_ptr);
+ freopen ("/dev/null", "w", stdout);
printf ("%s %s\n", token1, token2);
return 0;
]])],
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [ovs_cv_name[]=yes], [ovs_cv_name[]=no])
CFLAGS="$ovs_save_CFLAGS"])
if test $ovs_cv_name = yes; then
- m4_if([$2], [], [;], [$2])
+ m4_if([$2], [], [:], [$2])
else
m4_if([$3], [], [:], [$3])
fi
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 OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
+dnl Check whether the given C compiler OPTION is accepted.
+dnl If so, enable the given Automake CONDITIONAL.
+
+dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
+AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
+ [OVS_CHECK_CC_OPTION(
+ [$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])
git://git.onelab.eu / sliver-openvswitch.git / blobdiff