mirror of
https://github.com/openvswitch/ovs
synced 2025-10-17 14:28:02 +00:00
f613a0d72c
Currently ovs is using device stats for Linux devices and count them itself in other situations. This leads to overlap with hardware stats, inconsistencies, etc. It's much better to just always count the packets flowing through the switch and let userspace do any merging that it wants. Following patch removes vport->get_stats() interface. vport-stat is changed to use new `struct ovs_vport_stat` rather than rtnl_link_stats64. Definitions of rtnl_link_stats64 is removed from OVS. dipf_port->stat is also removed as aggregate stats are only available at netdev layer. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Acked-by: Jesse Gross <jesse@nicira.com>
437 lines
16 KiB
Plaintext
437 lines
16 KiB
Plaintext
# -*- autoconf -*-
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# Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at:
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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dnl OVS_ENABLE_WERROR
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AC_DEFUN([OVS_ENABLE_WERROR],
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[AC_ARG_ENABLE(
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[Werror],
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[AC_HELP_STRING([--enable-Werror], [Add -Werror to CFLAGS])],
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[], [enable_Werror=no])
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AC_CONFIG_COMMANDS_PRE(
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[if test "X$enable_Werror" = Xyes; then
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CFLAGS="$CFLAGS -Werror"
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fi])])
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dnl OVS_CHECK_LINUX
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dnl
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dnl Configure linux kernel source tree
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AC_DEFUN([OVS_CHECK_LINUX], [
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AC_ARG_WITH([linux],
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[AC_HELP_STRING([--with-linux=/path/to/linux],
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[Specify the Linux kernel build directory])])
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AC_ARG_WITH([linux-source],
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[AC_HELP_STRING([--with-linux-source=/path/to/linux-source],
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[Specify the Linux kernel source directory
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(usually figured out automatically from build
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directory)])])
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# Deprecated equivalents to --with-linux, --with-linux-source.
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AC_ARG_WITH([l26])
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AC_ARG_WITH([l26-source])
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if test X"$with_linux" != X; then
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KBUILD=$with_linux
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elif test X"$with_l26" != X; then
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KBUILD=$with_l26
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AC_MSG_WARN([--with-l26 is deprecated, please use --with-linux instead])
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else
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KBUILD=
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fi
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if test X"$KBUILD" != X; then
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if test X"$with_linux_source" != X; then
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KSRC=$with_linux_source
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elif test X"$with_l26_source" != X; then
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KSRC=$with_l26_source
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AC_MSG_WARN([--with-l26-source is deprecated, please use --with-linux-source instead])
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else
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KSRC=
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fi
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elif test X"$with_linux_source" != X || test X"$with_l26_source" != X; then
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AC_MSG_ERROR([Linux source directory may not be specified without Linux build directory])
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fi
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if test -n "$KBUILD"; then
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KBUILD=`eval echo "$KBUILD"`
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case $KBUILD in
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/*) ;;
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*) KBUILD=`pwd`/$KBUILD ;;
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esac
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# The build directory is what the user provided.
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# Make sure that it exists.
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AC_MSG_CHECKING([for Linux build directory])
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if test -d "$KBUILD"; then
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AC_MSG_RESULT([$KBUILD])
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AC_SUBST(KBUILD)
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else
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AC_MSG_RESULT([no])
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AC_ERROR([source dir $KBUILD doesn't exist])
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fi
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# Debian breaks kernel headers into "source" header and "build" headers.
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# We want the source headers, but $KBUILD gives us the "build" headers.
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# Use heuristics to find the source headers.
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AC_MSG_CHECKING([for Linux source directory])
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if test -n "$KSRC"; then
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KSRC=`eval echo "$KSRC"`
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case $KSRC in
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/*) ;;
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*) KSRC=`pwd`/$KSRC ;;
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esac
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if test ! -e $KSRC/include/linux/kernel.h; then
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AC_MSG_ERROR([$KSRC is not a kernel source directory])
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fi
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else
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KSRC=$KBUILD
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if test ! -e $KSRC/include/linux/kernel.h; then
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case `echo "$KBUILD" | sed 's,/*$,,'` in # (
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*/build)
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KSRC=`echo "$KBUILD" | sed 's,/build/*$,/source,'`
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;; # (
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*)
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KSRC=`(cd $KBUILD && pwd -P) | sed 's,-[[^-]]*$,-common,'`
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;;
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esac
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fi
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if test ! -e $KSRC/include/linux/kernel.h; then
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AC_MSG_ERROR([cannot find source directory (please use --with-linux-source)])
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fi
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fi
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AC_MSG_RESULT([$KSRC])
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AC_MSG_CHECKING([for kernel version])
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version=`sed -n 's/^VERSION = //p' "$KSRC/Makefile"`
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patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$KSRC/Makefile"`
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sublevel=`sed -n 's/^SUBLEVEL = //p' "$KSRC/Makefile"`
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if test X"$version" = X || test X"$patchlevel" = X; then
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AC_ERROR([cannot determine kernel version])
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elif test X"$sublevel" = X; then
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kversion=$version.$patchlevel
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else
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kversion=$version.$patchlevel.$sublevel
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fi
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AC_MSG_RESULT([$kversion])
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if test "$version" -ge 3; then
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: # Linux 3.x
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elif test "$version" = 2 && test "$patchlevel" -ge 6; then
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: # Linux 2.6.x
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else
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if test "$KBUILD" = "$KSRC"; then
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AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 2.6 or later is required])
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else
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AC_ERROR([Linux kernel in build tree $KBUILD (source tree $KSRC) is version $kversion, but version 2.6 or later is required])
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fi
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fi
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if test ! -e "$KBUILD"/include/linux/version.h || \
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(test ! -e "$KBUILD"/include/linux/autoconf.h && \
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test ! -e "$KBUILD"/include/generated/autoconf.h); then
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AC_MSG_ERROR([Linux kernel source in $KBUILD is not configured])
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fi
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OVS_CHECK_LINUX_COMPAT
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fi
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AM_CONDITIONAL(LINUX_ENABLED, test -n "$KBUILD")
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])
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dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
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dnl
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dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
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dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
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dnl <REGEX> translated to uppercase.
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AC_DEFUN([OVS_GREP_IFELSE], [
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AC_MSG_CHECKING([whether $2 matches in $1])
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if test -f $1; then
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grep '$2' $1 >/dev/null 2>&1
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status=$?
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case $status in
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0)
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AC_MSG_RESULT([yes])
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m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
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;;
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1)
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AC_MSG_RESULT([no])
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$4
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;;
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*)
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AC_MSG_ERROR([grep exited with status $status])
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;;
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esac
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else
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AC_MSG_RESULT([file not found])
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$4
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fi
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])
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dnl OVS_DEFINE(NAME)
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dnl
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dnl Defines NAME to 1 in kcompat.h.
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AC_DEFUN([OVS_DEFINE], [
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echo '#define $1 1' >> datapath/linux/kcompat.h.new
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])
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AC_DEFUN([OVS_CHECK_LOG2_H], [
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AC_MSG_CHECKING([for $KSRC/include/linux/log2.h])
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if test -e $KSRC/include/linux/log2.h; then
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AC_MSG_RESULT([yes])
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OVS_DEFINE([HAVE_LOG2_H])
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else
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AC_MSG_RESULT([no])
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fi
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])
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dnl OVS_CHECK_LINUX_COMPAT
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dnl
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dnl Runs various Autoconf checks on the Linux 2.6 kernel source in
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dnl the directory in $KBUILD.
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AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
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rm -f datapath/linux/kcompat.h.new
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mkdir -p datapath/linux
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: > datapath/linux/kcompat.h.new
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OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
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[OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
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OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
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OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
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OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
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OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
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OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
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OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
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[OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
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[rcu_read_lock_held])])
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# Check for the proto_data_valid member in struct sk_buff. The [^@]
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# is necessary because some versions of this header remove the
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# member but retain the kerneldoc comment that describes it (which
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# starts with @). The brackets must be doubled because of m4
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# quoting rules.
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OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
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[OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
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OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [raw],
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[OVS_DEFINE([HAVE_MAC_RAW])])
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OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
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[OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
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OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
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[skb_copy_from_linear_data_offset])
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OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
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OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_transport_header],
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[OVS_DEFINE([HAVE_SKBUFF_HEADER_HELPERS])])
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OVS_GREP_IFELSE([$KSRC/include/linux/icmpv6.h], [icmp6_hdr],
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[OVS_DEFINE([HAVE_ICMP6_HDR])])
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OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
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[OVS_DEFINE([HAVE_SKB_WARN_LRO])])
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OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
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OVS_GREP_IFELSE([$KSRC/include/linux/string.h], [kmemdup], [],
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[OVS_GREP_IFELSE([$KSRC/include/linux/slab.h], [kmemdup])])
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OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
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[OVS_DEFINE([HAVE_BOOL_TYPE])])
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OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
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[OVS_DEFINE([HAVE_CSUM_TYPES])])
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OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
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OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
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OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [NLA_NUL_STRING])
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OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
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OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
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OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
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[OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
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OVS_CHECK_LOG2_H
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if cmp -s datapath/linux/kcompat.h.new \
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datapath/linux/kcompat.h >/dev/null 2>&1; then
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rm datapath/linux/kcompat.h.new
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else
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mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
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fi
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])
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dnl Checks for net/if_packet.h.
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AC_DEFUN([OVS_CHECK_IF_PACKET],
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[AC_CHECK_HEADER([net/if_packet.h],
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[HAVE_IF_PACKET=yes],
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[HAVE_IF_PACKET=no])
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AM_CONDITIONAL([HAVE_IF_PACKET], [test "$HAVE_IF_PACKET" = yes])
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if test "$HAVE_IF_PACKET" = yes; then
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AC_DEFINE([HAVE_IF_PACKET], [1],
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[Define to 1 if net/if_packet.h is available.])
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fi])
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dnl Checks for buggy strtok_r.
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dnl
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dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
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dnl with optimization that can cause segfaults:
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dnl
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dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
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AC_DEFUN([OVS_CHECK_STRTOK_R],
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[AC_CACHE_CHECK(
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[whether strtok_r macro segfaults on some inputs],
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[ovs_cv_strtok_r_bug],
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[AC_RUN_IFELSE(
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[AC_LANG_PROGRAM([#include <stdio.h>
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#include <string.h>
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],
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[[char string[] = ":::";
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char *save_ptr = (char *) 0xc0ffee;
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char *token1, *token2;
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token1 = strtok_r(string, ":", &save_ptr);
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token2 = strtok_r(NULL, ":", &save_ptr);
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freopen ("/dev/null", "w", stdout);
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printf ("%s %s\n", token1, token2);
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return 0;
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]])],
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[ovs_cv_strtok_r_bug=no],
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[ovs_cv_strtok_r_bug=yes],
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[ovs_cv_strtok_r_bug=yes])])
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if test $ovs_cv_strtok_r_bug = yes; then
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AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
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[Define if strtok_r macro segfaults on some inputs])
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fi
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])
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dnl ----------------------------------------------------------------------
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dnl These macros are from GNU PSPP, with the following original license:
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dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
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dnl Check whether the given C compiler OPTION is accepted.
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dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
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AC_DEFUN([OVS_CHECK_CC_OPTION],
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[
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m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-], [_])])dnl
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AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
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[ovs_save_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS $1"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [ovs_cv_name[]=yes], [ovs_cv_name[]=no])
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CFLAGS="$ovs_save_CFLAGS"])
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if test $ovs_cv_name = yes; then
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m4_if([$2], [], [:], [$2])
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else
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m4_if([$3], [], [:], [$3])
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fi
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])
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dnl OVS_ENABLE_OPTION([OPTION])
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dnl Check whether the given C compiler OPTION is accepted.
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dnl If so, add it to WARNING_FLAGS.
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dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
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AC_DEFUN([OVS_ENABLE_OPTION],
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[OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
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AC_SUBST([WARNING_FLAGS])])
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dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
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dnl Check whether the given C compiler OPTION is accepted.
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dnl If so, enable the given Automake CONDITIONAL.
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dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
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AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
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[OVS_CHECK_CC_OPTION(
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[$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
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AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
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dnl ----------------------------------------------------------------------
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dnl Check for too-old XenServer.
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AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
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[AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
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[if test -e /etc/redhat-release; then
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ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
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fi
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if test -z "$ovs_cv_xsversion"; then
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ovs_cv_xsversion=none
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fi])
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case $ovs_cv_xsversion in
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none)
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;;
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[[1-9]][[0-9]]* | dnl XenServer 10 or later
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[[6-9]]* | dnl XenServer 6 or later
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5.[[7-9]]* | dnl XenServer 5.7 or later
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5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
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5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
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5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
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;;
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*)
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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.)])
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;;
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esac])
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dnl OVS_MAKE_HAS_IF([if-true], [if-false])
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dnl
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dnl Checks whether make has the GNU make $(if condition,then,else) extension.
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dnl Runs 'if-true' if so, 'if-false' otherwise.
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AC_DEFUN([OVS_MAKE_HAS_IF],
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[AC_CACHE_CHECK(
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[whether ${MAKE-make} has GNU make \$(if) extension],
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[ovs_cv_gnu_make_if],
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[cat <<'EOF' > conftest.mk
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conftest.out:
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echo $(if x,y,z) > conftest.out
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.PHONY: all
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EOF
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rm -f conftest.out
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AS_ECHO(["$as_me:$LINENO: invoking ${MAKE-make} -f conftest.mk all:"]) >&AS_MESSAGE_LOG_FD 2>&1
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${MAKE-make} -f conftest.mk conftest.out >&AS_MESSAGE_LOG_FD 2>&1
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AS_ECHO(["$as_me:$LINENO: conftest.out contains:"]) >&AS_MESSAGE_LOG_FD 2>&1
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cat conftest.out >&AS_MESSAGE_LOG_FD 2>&1
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result=`cat conftest.out`
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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], [$2])])
|
|
|
|
dnl OVS_CHECK_SPARSE_TARGET
|
|
dnl
|
|
dnl The "cgcc" script from "sparse" isn't very good at detecting the
|
|
dnl target for which the code is being built. This helps it out.
|
|
AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
|
|
[AC_CACHE_CHECK(
|
|
[target hint for cgcc],
|
|
[ac_cv_sparse_target],
|
|
[AS_CASE([`$CC -dumpmachine 2>/dev/null`],
|
|
[i?86-* | athlon-*], [ac_cv_sparse_target=x86],
|
|
[x86_64-*], [ac_cv_sparse_target=x86_64],
|
|
[ac_cv_sparse_target=other])])
|
|
AS_CASE([$ac_cv_sparse_target],
|
|
[x86], [SPARSEFLAGS= CGCCFLAGS=-target=i86],
|
|
[x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS=-target=x86_64],
|
|
[SPARSEFLAGS= CGCCFLAGS=])
|
|
AC_SUBST([SPARSEFLAGS])
|
|
AC_SUBST([CGCCFLAGS])])
|
|
|
|
dnl OVS_ENABLE_SPARSE
|
|
AC_DEFUN([OVS_ENABLE_SPARSE],
|
|
[AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
|
|
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 $(SPARSEFLAGS)" cgcc $(CGCCFLAGS),'"$CC"')'])])])
|