# -*- autoconf -*-
-# Copyright (c) 2008, 2009 Nicira Networks.
+# Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 Nicira, Inc.
#
# 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_LINUX(OPTION, VERSION, VARIABLE, CONDITIONAL)
+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$enable_Werror" = Xyes; then
+ OVS_CFLAGS="$OVS_CFLAGS -Werror"
+ fi])])
+
+dnl OVS_CHECK_LINUX
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($3)
+ AC_ARG_WITH([linux],
+ [AC_HELP_STRING([--with-linux=/path/to/linux],
+ [Specify the Linux kernel build directory])])
+ AC_ARG_WITH([linux-source],
+ [AC_HELP_STRING([--with-linux-source=/path/to/linux-source],
+ [Specify the Linux kernel source directory
+ (usually figured out automatically from build
+ directory)])])
+
+ # Deprecated equivalents to --with-linux, --with-linux-source.
+ AC_ARG_WITH([l26])
+ AC_ARG_WITH([l26-source])
+
+ if test X"$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 $KBUILD in
+ /*) ;;
+ *) KBUILD=`pwd`/$KBUILD ;;
+ esac
+
+ # The build directory is what the user provided.
+ # Make sure that it exists.
+ 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 $KBUILD doesn't exist])
+ fi
+
+ # Debian breaks kernel headers into "source" header and "build" headers.
+ # We want the source headers, but $KBUILD gives us the "build" headers.
+ # Use heuristics to find the source headers.
+ AC_MSG_CHECKING([for Linux source directory])
+ if test -n "$KSRC"; then
+ KSRC=`eval echo "$KSRC"`
+ case $KSRC in
+ /*) ;;
+ *) KSRC=`pwd`/$KSRC ;;
+ esac
+ 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 "$KSRC"/include/linux/kernel.h; then
+ AC_MSG_ERROR([cannot find source directory (please use --with-linux-source)])
+ fi
+ fi
+ AC_MSG_RESULT([$KSRC])
+
+ AC_MSG_CHECKING([for kernel version])
+ 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
- AC_MSG_RESULT([no])
- AC_ERROR([source dir $path doesn't exist])
+ kversion=$version.$patchlevel.$sublevel
fi
+ AC_MSG_RESULT([$kversion])
- AC_MSG_CHECKING([for $path kernel version])
- patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$path/Makefile"`
- sublevel=`sed -n 's/^SUBLEVEL = //p' "$path/Makefile"`
- AC_MSG_RESULT([2.$patchlevel.$sublevel])
- if test "2.$patchlevel" != '$2'; then
- AC_ERROR([Linux kernel source in $path is not version $2])
+ if test "$version" -ge 4; then
+ if test "$version" = 4 && test "$patchlevel" -le 3; then
+ : # Linux 4.x
+ else
+ AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 4.3.x is not supported (please refer to the FAQ for advice)])
+ fi
+ elif test "$version" = 3; then
+ : # Linux 3.x
+ else
+ if test "$version" -le 1 || test "$patchlevel" -le 5 || test "$sublevel" -le 31; then
+ AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 2.6.32 or later is required])
+ else
+ : # Linux 2.6.x
+ fi
fi
- if ! test -e "$path"/include/linux/version.h || \
- ! test -e "$path"/include/linux/autoconf.h; then
- AC_MSG_ERROR([Linux kernel source in $path is not configured])
+ if (test ! -e "$KBUILD"/include/linux/version.h && \
+ test ! -e "$KBUILD"/include/generated/uapi/linux/version.h)|| \
+ (test ! -e "$KBUILD"/include/linux/autoconf.h && \
+ test ! -e "$KBUILD"/include/generated/autoconf.h); then
+ AC_MSG_ERROR([Linux kernel source in $KBUILD is not configured])
+ fi
+ OVS_CHECK_LINUX_COMPAT
+ fi
+ AM_CONDITIONAL(LINUX_ENABLED, test -n "$KBUILD")
+])
+
+dnl OVS_CHECK_DPDK
+dnl
+dnl Configure DPDK source tree
+AC_DEFUN([OVS_CHECK_DPDK], [
+ AC_ARG_WITH([dpdk],
+ [AC_HELP_STRING([--with-dpdk=/path/to/dpdk],
+ [Specify the DPDK build directory])])
+
+ if test X"$with_dpdk" != X; then
+ RTE_SDK=$with_dpdk
+
+ DPDK_INCLUDE=$RTE_SDK/include
+ DPDK_LIB_DIR=$RTE_SDK/lib
+ DPDK_LIB="-ldpdk"
+ DPDK_EXTRA_LIB=""
+ RTE_SDK_FULL=`readlink -f $RTE_SDK`
+
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([#include <$RTE_SDK_FULL/include/rte_config.h>
+#if !RTE_LIBRTE_VHOST_USER
+#error
+#endif], [])],
+ [], [AC_DEFINE([VHOST_CUSE], [1], [DPDK vhost-cuse support enabled, vhost-user disabled.])
+ DPDK_EXTRA_LIB="-lfuse"])
+
+ ovs_save_CFLAGS="$CFLAGS"
+ ovs_save_LDFLAGS="$LDFLAGS"
+ LDFLAGS="$LDFLAGS -L$DPDK_LIB_DIR"
+ CFLAGS="$CFLAGS -I$DPDK_INCLUDE"
+
+ # On some systems we have to add -ldl to link with dpdk
+ #
+ # This code, at first, tries to link without -ldl (""),
+ # then adds it and tries again.
+ # Before each attempt the search cache must be unset,
+ # otherwise autoconf will stick with the old result
+
+ found=false
+ save_LIBS=$LIBS
+ for extras in "" "-ldl"; do
+ LIBS="$DPDK_LIB $extras $save_LIBS $DPDK_EXTRA_LIB"
+ AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM([#include <rte_config.h>
+ #include <rte_eal.h>],
+ [int rte_argc; char ** rte_argv;
+ rte_eal_init(rte_argc, rte_argv);])],
+ [found=true])
+ if $found; then
+ break
+ fi
+ done
+ if $found; then :; else
+ AC_MSG_ERROR([cannot link with dpdk])
fi
- m4_if($2, [2.6], [OVS_CHECK_LINUX26_COMPAT])
+ CFLAGS="$ovs_save_CFLAGS"
+ LDFLAGS="$ovs_save_LDFLAGS"
+ OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
+ OVS_CFLAGS="$OVS_CFLAGS -I$DPDK_INCLUDE"
+ OVS_ENABLE_OPTION([-mssse3])
+
+ # DPDK pmd drivers are not linked unless --whole-archive is used.
+ #
+ # This happens because the rest of the DPDK code doesn't use any symbol in
+ # the pmd driver objects, and the drivers register themselves using an
+ # __attribute__((constructor)) function.
+ #
+ # These options are specified inside a single -Wl directive to prevent
+ # autotools from reordering them.
+ DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
+ AC_SUBST([DPDK_vswitchd_LDFLAGS])
+ AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
+
+ else
+ RTE_SDK=
fi
- AM_CONDITIONAL($4, test -n "$path")
+
+ AM_CONDITIONAL([DPDK_NETDEV], test -n "$RTE_SDK")
])
-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 OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
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)
+dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
+dnl structure definition. If this is successful, runs IF-MATCH, otherwise
+dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
+dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
+dnl translated to uppercase.
+AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
+ AC_MSG_CHECKING([whether $2 has member $3 in $1])
+ if test -f $1; then
+ awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
+ status=$?
+ case $status in
+ 0)
+ AC_MSG_RESULT([yes])
+ m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
+ ;;
+ 1)
+ AC_MSG_RESULT([no])
+ $5
+ ;;
+ *)
+ AC_MSG_ERROR([grep exited with status $status])
+ ;;
+ esac
else
- AC_MSG_RESULT([no])
+ AC_MSG_RESULT([file not found])
+ $5
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
- AC_MSG_RESULT([yes])
- OVS_DEFINE([HAVE_LOG2_H])
- else
- AC_MSG_RESULT([no])
- fi
+dnl OVS_DEFINE(NAME)
+dnl
+dnl Defines NAME to 1 in kcompat.h.
+AC_DEFUN([OVS_DEFINE], [
+ echo '#define $1 1' >> datapath/linux/kcompat.h.new
])
-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 $KSRC26.
-AC_DEFUN([OVS_CHECK_LINUX26_COMPAT], [
- rm -f datapath/linux-2.6/kcompat.h.new
- mkdir -p datapath/linux-2.6
- : > datapath/linux-2.6/kcompat.h.new
- OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_transport_header],
+dnl the directory in $KBUILD.
+AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
+ rm -f datapath/linux/kcompat.h.new
+ mkdir -p datapath/linux
+ : > datapath/linux/kcompat.h.new
+
+ echo '#include <linux/version.h>
+#ifndef RHEL_RELEASE_CODE
+#define RHEL_RELEASE_CODE 0
+#define RHEL_RELEASE_VERSION(a, b) 0
+#endif' >> datapath/linux/kcompat.h.new
+
+ OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
+ [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
+
+ OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
+ [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
+ OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
+
+ OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
+ OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
+
+ OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
+ OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
+
+ OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
+ OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
+ OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
+ OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
+ OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
+
+ OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
+ OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
+ OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
+ [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
+ OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
+ [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
+
+ OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
+ [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
+ OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_do_fragment])
+ OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_is_fragment])
+ OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
+
+ OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
+ [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
+ OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
+ OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
+ [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
+ OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
+ [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
+ OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
+ OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
+ [frags_work])
+ OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
+ [rwlock])
+ OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
+ [list_evictor])
+ OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
+ [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
+
+ OVS_GREP_IFELSE([$KSRC/include/net/dst_metadata.h], [metadata_dst])
+
+ OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
+ [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
+ 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/netdevice.h], [dev_recursion_level])
+ OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
+ OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
+ OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
+ OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
+ OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats])
+ OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_rx_handler_register])
+ OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_extended])
+ OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [rx_handler_func_t.*pskb],
+ [OVS_DEFINE([HAVE_RX_HANDLER_PSKB])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
+ [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
+ OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
+ [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
+
+ OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
+ OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
+ OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
+ [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
+ OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
+ [fragment], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
+
+ OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
+ [tmpl_alloc.*conntrack_zone],
+ [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
+ OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
+ [nf_ct_zone_init])
+ OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
+ [nf_connlabels_get])
+ OVS_GREP_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
+ [nf_ct_frag6_consume_orig])
+ OVS_GREP_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
+ [nf_ct_frag6_output])
+
+ OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32])
+ OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
+
+ OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
+ OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
+ OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
+ [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
+ OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
+
+ OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
+ [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
+ [rcu_read_lock_held])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_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([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
+ [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_mac_header])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_network_header])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_scrub_packet.*xnet],
+ [OVS_DEFINE([HAVE_SKB_SCRUB_PACKET_XNET])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
+ [OVS_DEFINE([HAVE_U16_RXHASH])])
+ OVS_GREP_IFELSE([$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([$KSRC26/include/linux/skbuff.h], [raw],
- [OVS_DEFINE([HAVE_MAC_RAW])])
- OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h],
- [skb_copy_from_linear_data_offset],
- [OVS_DEFINE([HAVE_SKB_COPY_FROM_LINEAR_DATA_OFFSET])])
- OVS_GREP_IFELSE([$KSRC26/include/net/netlink.h], [NLA_NUL_STRING],
- [OVS_DEFINE([HAVE_NLA_NUL_STRING])])
- OVS_GREP_IFELSE([$KSRC26/include/linux/err.h], [ERR_CAST],
- [OVS_DEFINE([HAVE_ERR_CAST])])
- OVS_GREP_IFELSE([$KSRC26/include/net/checksum.h], [csum_unfold],
- [OVS_DEFINE([HAVE_CSUM_UNFOLD])])
- OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_cow],
- [OVS_DEFINE([HAVE_SKB_COW])])
- 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
+ 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([$KSRC/include/linux/skbuff.h], [consume_skb])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
+ [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
+ [OVS_DEFINE([HAVE_L4_RXHASH])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
+
+ 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([$KSRC/include/uapi/linux/types.h], [__wsum],
+ [OVS_DEFINE([HAVE_CSUM_TYPES])])
+
+ OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
+ OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
+
+ OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
+ OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
+
+ OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
+ OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
+ OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
+ OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_new_unicast])
+ OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
+ [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
+ OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
+ OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
+ [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
+
+ OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
+ [genl_multicast_group], [id])
+ OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
+
+ OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
+ OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
+ OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
+ OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
+ OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
+ OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
+ [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
+ OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
+ [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
+
+ OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
+ OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
+ OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
+ OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
+ OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
+ OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
+ OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
+ OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
+ [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
+
+ OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
+
+ OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
+ [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
+ OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
+ OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
+
+ OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
+
+ OVS_GREP_IFELSE([$KSRC/include/linux/openvswitch.h], [openvswitch_handle_frame_hook],
+ [OVS_DEFINE([HAVE_RHEL_OVS_HOOK])])
+ OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
+ [OVS_DEFINE([HAVE_VXLAN_METADATA])])
+ OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [VXLAN_HF_RCO])
+ OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
+ [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
+ [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
+ OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
+ OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_set_csum])
+ OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
+ OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [ipv6_v6only],
+ [OVS_DEFINE([HAVE_UDP_TUNNEL_IPV6])])
+
+ OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
+ [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
+ OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
+ [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
+
+ OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
+ [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
+
+ dnl Conntrack support, and therefore, IP fragment handling backport, should
+ dnl only be enabled on kernels 3.10+. In future when OVS drops support for
+ dnl kernels older than 3.10, this macro could be removed from the codebase.
+ if test "$version" = 4; then
+ OVS_DEFINE([OVS_FRAGMENT_BACKPORT])
+ elif test "$version" = 3 && test "$patchlevel" -ge 10; then
+ OVS_DEFINE([OVS_FRAGMENT_BACKPORT])
+ fi
+
+ 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
])
[Define to 1 if net/if_packet.h is available.])
fi])
+dnl Checks for net/if_dl.h.
+dnl
+dnl (We use this as a proxy for checking whether we're building on FreeBSD
+dnl or NetBSD.)
+AC_DEFUN([OVS_CHECK_IF_DL],
+ [AC_CHECK_HEADER([net/if_dl.h],
+ [HAVE_IF_DL=yes],
+ [HAVE_IF_DL=no])
+ AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
+ if test "$HAVE_IF_DL" = yes; then
+ AC_DEFINE([HAVE_IF_DL], [1],
+ [Define to 1 if net/if_dl.h is available.])
+
+ # On these platforms we use libpcap to access network devices.
+ AC_SEARCH_LIBS([pcap_open_live], [pcap])
+ fi])
+
dnl Checks for buggy strtok_r.
dnl
dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
[AC_LANG_PROGRAM([#include <stdio.h>
#include <string.h>
],
- [[char string[] = ":::";
+ [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
+ /* Assume bug is present, because relatively minor
+ changes in compiler settings (e.g. optimization
+ level) can make it crop up. */
+ return 1;
+ #else
+ char string[] = ":::";
char *save_ptr = (char *) 0xc0ffee;
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;
+ #endif
]])],
[ovs_cv_strtok_r_bug=no],
[ovs_cv_strtok_r_bug=yes],
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
-dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
-dnl Check whether the given C compiler OPTION is accepted.
-dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
-AC_DEFUN([OVS_CHECK_CC_OPTION],
-[
- m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-], [_])])dnl
+AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
+ m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-=], [__])])dnl
AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
[ovs_save_CFLAGS="$CFLAGS"
- CFLAGS="$CFLAGS $1"
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [ovs_cv_name[]=yes], [ovs_cv_name[]=no])
+ dnl Include -Werror in the compiler options, because without -Werror
+ dnl clang's GCC-compatible compiler driver does not return a failure
+ dnl exit status even though it complains about options it does not
+ dnl understand.
+ dnl
+ dnl Also, check stderr as gcc exits with status 0 for options
+ dnl rejected at getopt level.
+ dnl % touch /tmp/a.c
+ dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
+ dnl gcc: unrecognized option '-Qunused-arguments'
+ dnl 0
+ dnl %
+ CFLAGS="$CFLAGS $WERROR $1"
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [if test -s conftest.err && grep "unrecognized option" conftest.err; then ovs_cv_name[]=no; else ovs_cv_name[]=yes; fi], [ovs_cv_name[]=no])
CFLAGS="$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_CHECK_WERROR
+dnl
+dnl Check whether the C compiler accepts -Werror.
+dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
+AC_DEFUN([OVS_CHECK_WERROR],
+ [WERROR=
+ _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
+
+dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
+dnl Check whether the given C compiler OPTION is accepted.
+dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
+AC_DEFUN([OVS_CHECK_CC_OPTION],
+ [AC_REQUIRE([OVS_CHECK_WERROR])
+ _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
+
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])
+
+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_CHECK_MAKE_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])])
+
+dnl OVS_CHECK_GNU_MAKE
+dnl
+dnl Checks whether make is GNU make (because Linux kernel Makefiles
+dnl only work with GNU make).
+AC_DEFUN([OVS_CHECK_GNU_MAKE],
+ [AC_CACHE_CHECK(
+ [whether ${MAKE-make} is GNU make],
+ [ovs_cv_gnu_make],
+ [rm -f conftest.out
+ AS_ECHO(["$as_me:$LINENO: invoking ${MAKE-make} --version:"]) >&AS_MESSAGE_LOG_FD 2>&1
+ ${MAKE-make} --version >conftest.out 2>&1
+ cat conftest.out >&AS_MESSAGE_LOG_FD 2>&1
+ result=`cat conftest.out`
+ rm -f conftest.mk conftest.out
+
+ case $result in # (
+ GNU*) ovs_cv_gnu_make=yes ;; # (
+ *) ovs_cv_gnu_make=no ;;
+ esac])
+ AM_CONDITIONAL([GNU_MAKE], [test $ovs_cv_gnu_make = yes])])
+
+dnl OVS_CHECK_SPARSE_TARGET
+dnl
+dnl The "cgcc" script from "sparse" isn't very good at detecting the
+dnl target for which the code is being built. This helps it out.
+AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
+ [AC_CACHE_CHECK(
+ [target hint for cgcc],
+ [ac_cv_sparse_target],
+ [AS_CASE([`$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([$ac_cv_sparse_target],
+ [x86], [SPARSEFLAGS= CGCCFLAGS=-target=i86],
+ [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS=-target=x86_64],
+ [SPARSEFLAGS= CGCCFLAGS=])
+ AC_SUBST([SPARSEFLAGS])
+ AC_SUBST([CGCCFLAGS])])
+
+dnl OVS_SPARSE_EXTRA_INCLUDES
+dnl
+dnl The cgcc script from "sparse" does not search gcc's default
+dnl search path. Get the default search path from GCC and pass
+dnl them to sparse.
+AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
+ AC_SUBST([SPARSE_EXTRA_INCLUDES],
+ [`$CC -v -E - </dev/null 2>&1 >/dev/null | sed -n -e '/^#include.*search.*starts.*here:/,/^End.*of.*search.*list\./s/^ \(.*\)/-I \1/p' |grep -v /usr/lib | grep -x -v '\-I /usr/include' | tr \\\n ' ' `] ))
+
+dnl OVS_ENABLE_SPARSE
+AC_DEFUN([OVS_ENABLE_SPARSE],
+ [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
+ AC_REQUIRE([OVS_CHECK_MAKE_IF])
+ AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
+ : ${SPARSE=sparse}
+ AC_SUBST([SPARSE])
+ AC_CONFIG_COMMANDS_PRE(
+ [if test $ovs_cv_gnu_make_if = yes; then
+ CC='$(if $(C),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'
+ fi])])
+
+dnl OVS_PTHREAD_SET_NAME
+dnl
+dnl This checks for three known variants of pthreads functions for setting
+dnl the name of the current thread:
+dnl
+dnl glibc: int pthread_setname_np(pthread_t, const char *name);
+dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
+dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
+dnl
+dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
+dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
+dnl provide to it.
+dnl
+dnl This macro defines:
+dnl
+dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
+dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
+dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
+AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
+ [AC_CHECK_FUNCS([pthread_set_name_np])
+ if test $ac_cv_func_pthread_set_name_np != yes; then
+ AC_CACHE_CHECK(
+ [for pthread_setname_np() variant],
+ [ovs_cv_pthread_setname_np],
+ [AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM([#include <pthread.h>
+ ], [pthread_setname_np(pthread_self(), "name");])],
+ [ovs_cv_pthread_setname_np=glibc],
+ [AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM([#include <pthread.h>
+], [pthread_setname_np(pthread_self(), "%s", "name");])],
+ [ovs_cv_pthread_setname_np=netbsd],
+ [ovs_cv_pthread_setname_np=none])])])
+ case $ovs_cv_pthread_setname_np in # (
+ glibc)
+ AC_DEFINE(
+ [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
+ [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
+ ;; # (
+ netbsd)
+ AC_DEFINE(
+ [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
+ [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
+ ;;
+ esac
+ fi])
+
+dnl OVS_CHECK_LINUX_HOST.
+dnl
+dnl Checks whether we're building for a Linux host, based on the presence of
+dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
+dnl LINUX based on the result.
+AC_DEFUN([OVS_CHECK_LINUX_HOST],
+ [AC_CACHE_CHECK(
+ [whether __linux__ is defined],
+ [ovs_cv_linux],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
+ [ovs_cv_linux=true],
+ [ovs_cv_linux=false])])
+ AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])
projects / cascardo / ovs.git / blobdiff