# -*- autoconf -*-
-# Copyright (c) 2008, 2009, 2010 Nicira Networks.
+# Copyright (c) 2008, 2009, 2010, 2011, 2012 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_ARG_WITH([l26],
- [AC_HELP_STRING([--with-l26=/path/to/linux-2.6],
- [Specify the linux 2.6 kernel sources])],
- [KBUILD26="$withval"], [KBUILD26=])dnl
- if test -n "$KBUILD26"; then
- KBUILD26=`eval echo "$KBUILD26"`
- case $KBUILD26 in
+AC_DEFUN([OVS_CHECK_LINUX], [
+ AC_ARG_WITH([linux],
+ [AC_HELP_STRING([--with-linux=/path/to/linux],
+ [Specify the Linux kernel build directory])])
+ AC_ARG_WITH([linux-source],
+ [AC_HELP_STRING([--with-linux-source=/path/to/linux-source],
+ [Specify the Linux kernel source directory
+ (usually figured out automatically from build
+ directory)])])
+
+ # Deprecated equivalents to --with-linux, --with-linux-source.
+ AC_ARG_WITH([l26])
+ AC_ARG_WITH([l26-source])
+
+ if test X"$with_linux" != X; then
+ KBUILD=$with_linux
+ elif test X"$with_l26" != X; then
+ KBUILD=$with_l26
+ AC_MSG_WARN([--with-l26 is deprecated, please use --with-linux instead])
+ else
+ KBUILD=
+ fi
+
+ if test X"$KBUILD" != X; then
+ if test X"$with_linux_source" != X; then
+ KSRC=$with_linux_source
+ elif test X"$with_l26_source" != X; then
+ KSRC=$with_l26_source
+ AC_MSG_WARN([--with-l26-source is deprecated, please use --with-linux-source instead])
+ else
+ KSRC=
+ fi
+ elif test X"$with_linux_source" != X || test X"$with_l26_source" != X; then
+ AC_MSG_ERROR([Linux source directory may not be specified without Linux build directory])
+ fi
+
+ 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([$KBUILD26])
- AC_SUBST(KBUILD26)
+ AC_MSG_CHECKING([for Linux build directory])
+ if test -d "$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 $KBUILD gives us the "build" headers.
# Use heuristics to find the source headers.
- AC_MSG_CHECKING([for Linux 2.6 source directory])
- KSRC26=$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,'`
- ;;
+ AC_MSG_CHECKING([for Linux source directory])
+ if test -n "$KSRC"; then
+ KSRC=`eval echo "$KSRC"`
+ case $KSRC in
+ /*) ;;
+ *) KSRC=`pwd`/$KSRC ;;
esac
- if test ! -e $KSRC26/include/linux/kernel.h; then
- AC_MSG_ERROR([cannot find source directory])
+ if test ! -e $KSRC/include/linux/kernel.h; then
+ AC_MSG_ERROR([$KSRC is not a kernel source directory])
+ fi
+ else
+ KSRC=$KBUILD
+ if test ! -e $KSRC/include/linux/kernel.h; then
+ # Debian kernel build Makefiles tend to include a line of the form:
+ # MAKEARGS := -C /usr/src/linux-headers-3.2.0-1-common O=/usr/src/linux-headers-3.2.0-1-486
+ # First try to extract the source directory from this line.
+ KSRC=`sed -n 's/.*-C \([[^ ]]*\).*/\1/p' "$KBUILD"/Makefile`
+ if test ! -e "$KSRC"/include/linux/kernel.h; then
+ # Didn't work. Fall back to name-based heuristics that used to work.
+ case `echo "$KBUILD" | sed 's,/*$,,'` in # (
+ */build)
+ KSRC=`echo "$KBUILD" | sed 's,/build/*$,/source,'`
+ ;; # (
+ *)
+ KSRC=`(cd $KBUILD && pwd -P) | sed 's,-[[^-]]*$,-common,'`
+ ;;
+ esac
+ fi
+ fi
+ if test ! -e "$KSRC"/include/linux/kernel.h; then
+ AC_MSG_ERROR([cannot find source directory (please use --with-linux-source)])
fi
fi
- AC_MSG_RESULT([$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' "$KSRC26/Makefile"`
- if test -z "$patchlevel" || test -z "$sublevel"; then
+ version=`sed -n 's/^VERSION = //p' "$KSRC/Makefile"`
+ patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$KSRC/Makefile"`
+ sublevel=`sed -n 's/^SUBLEVEL = //p' "$KSRC/Makefile"`
+ if test X"$version" = X || test X"$patchlevel" = X; then
AC_ERROR([cannot determine kernel version])
+ elif test X"$sublevel" = X; then
+ kversion=$version.$patchlevel
+ else
+ kversion=$version.$patchlevel.$sublevel
fi
- AC_MSG_RESULT([2.$patchlevel.$sublevel])
- if test "2.$patchlevel" != '2.6'; then
- if test "$BUILD26" = "$KSRC26"; then
- AC_ERROR([Linux kernel in $KBUILD26 is not version 2.6])
+ AC_MSG_RESULT([$kversion])
+
+ if test "$version" -ge 3; then
+ : # Linux 3.x
+ elif test "$version" = 2 && test "$patchlevel" -ge 6; then
+ : # Linux 2.6.x
+ else
+ if test "$KBUILD" = "$KSRC"; then
+ AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 2.6 or later is required])
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 version $kversion, but version 2.6 or later is required])
fi
fi
- if test ! -e "$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 $KBUILD is not configured])
fi
- OVS_CHECK_LINUX26_COMPAT
+ OVS_CHECK_LINUX_COMPAT
fi
- AM_CONDITIONAL(L26_ENABLED, test -n "$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])
- 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)
dnl
dnl Defines NAME to 1 in kcompat.h.
AC_DEFUN([OVS_DEFINE], [
- 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
+ echo '#define $1 1' >> datapath/linux/kcompat.h.new
])
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], [
- rm -f datapath/linux-2.6/kcompat.h.new
- mkdir -p datapath/linux-2.6
- : > datapath/linux-2.6/kcompat.h.new
+dnl the directory in $KBUILD.
+AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
+ rm -f datapath/linux/kcompat.h.new
+ mkdir -p datapath/linux
+ : > datapath/linux/kcompat.h.new
- OVS_GREP_IFELSE([$KSRC26/include/linux/err.h], [ERR_CAST],
- [OVS_DEFINE([HAVE_ERR_CAST])])
+ OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
+ [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
- OVS_GREP_IFELSE([$KSRC26/include/linux/in.h], [ipv4_is_multicast],
- [OVS_DEFINE([HAVE_IPV4_IS_MULTICAST])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
- OVS_GREP_IFELSE([$KSRC26/include/linux/netdevice.h], [dev_disable_lro],
- [OVS_DEFINE([HAVE_DEV_DISABLE_LRO])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
+ OVS_GREP_IFELSE([$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([$KSRC26/include/linux/skbuff.h],
- [skb_copy_from_linear_data_offset],
- [OVS_DEFINE([HAVE_SKB_COPY_FROM_LINEAR_DATA_OFFSET])])
- OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_cow],
- [OVS_DEFINE([HAVE_SKB_COW])])
- OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_transport_header],
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
+ [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
+ [skb_copy_from_linear_data_offset])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
+ [skb_reset_tail_pointer])
+ 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([$KSRC/include/linux/types.h], [bool],
[OVS_DEFINE([HAVE_BOOL_TYPE])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
+ [OVS_DEFINE([HAVE_CSUM_TYPES])])
+
+ OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
+ OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
- OVS_GREP_IFELSE([$KSRC26/include/net/checksum.h], [csum_unfold],
- [OVS_DEFINE([HAVE_CSUM_UNFOLD])])
+ OVS_GREP_IFELSE([$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_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
+ if cmp -s datapath/linux/kcompat.h.new \
+ datapath/linux/kcompat.h >/dev/null 2>&1; then
+ rm datapath/linux/kcompat.h.new
else
- mv datapath/linux-2.6/kcompat.h.new datapath/linux-2.6/kcompat.h
+ mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
fi
])
[$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], [$2])])
+
+dnl OVS_CHECK_SPARSE_TARGET
+dnl
+dnl The "cgcc" script from "sparse" isn't very good at detecting the
+dnl target for which the code is being built. This helps it out.
+AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
+ [AC_CACHE_CHECK(
+ [target hint for cgcc],
+ [ac_cv_sparse_target],
+ [AS_CASE([`$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"')'])])])
git://git.onelab.eu / sliver-openvswitch.git / blobdiff