# -*- autoconf -*-
-# Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
+# 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.
fi
AC_MSG_RESULT([$kversion])
- if test "$version" -ge 3; then
- if test "$version" = 3 && test "$patchlevel" -le 18; then
- : # Linux 3.x
+ 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 3.18.x is not supported (please refer to the FAQ for advice)])
+ 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 $kversion, but version 2.6.32 or later is required])
DPDK_INCLUDE=$RTE_SDK/include
DPDK_LIB_DIR=$RTE_SDK/lib
- DPDK_LIB=-lintel_dpdk
+ 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"
found=false
save_LIBS=$LIBS
for extras in "" "-ldl"; do
- LIBS="$DPDK_LIB $extras $save_LIBS"
+ LIBS="$DPDK_LIB $extras $save_LIBS $DPDK_EXTRA_LIB"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <rte_config.h>
#include <rte_eal.h>],
LDFLAGS="$ovs_save_LDFLAGS"
OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
OVS_CFLAGS="$OVS_CFLAGS -I$DPDK_INCLUDE"
+ OVS_ENABLE_OPTION([-mssse3])
- # DPDK 1.7 pmd drivers are not linked unless --whole-archive is used.
+ # 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
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
fi
])
+dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
+dnl
+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([file not found])
+ $5
+ fi
+])
+
dnl OVS_DEFINE(NAME)
dnl
dnl Defines NAME to 1 in kcompat.h.
echo '#define $1 1' >> datapath/linux/kcompat.h.new
])
-AC_DEFUN([OVS_CHECK_LOG2_H], [
- AC_MSG_CHECKING([for $KSRC/include/linux/log2.h])
- if test -e $KSRC/include/linux/log2.h; then
- AC_MSG_RESULT([yes])
- OVS_DEFINE([HAVE_LOG2_H])
- else
- AC_MSG_RESULT([no])
- fi
-])
-
dnl OVS_CHECK_LINUX_COMPAT
dnl
dnl Runs various Autoconf checks on the Linux 2.6 kernel source in
mkdir -p datapath/linux
: > datapath/linux/kcompat.h.new
+ echo '#include <linux/version.h>
+#ifndef RHEL_RELEASE_CODE
+#define RHEL_RELEASE_CODE 0
+#define RHEL_RELEASE_VERSION(a, b) 0
+#endif' >> datapath/linux/kcompat.h.new
+
OVS_GREP_IFELSE([$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([$KSRC/include/linux/hash.h], [fast_hash_ops])
OVS_GREP_IFELSE([$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],
# 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_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], [l4_rxhash])
+ 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/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([$KSRC/include/net/ip_tunnels.h], [iptunnel_xmit.*net],
- [OVS_DEFINE([HAVE_IPTUNNEL_XMIT_NET])])
OVS_GREP_IFELSE([$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], [vxlan_xmit_skb])
- OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [bool xnet],
- [OVS_DEFINE([HAVE_VXLAN_XMIT_SKB_XNET_ARG])])
+ OVS_GREP_IFELSE([$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_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])
- OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df:1],
+ [OVS_GREP_IFELSE([$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_CHECK_LOG2_H
+ 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
[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);
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 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 $1"
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [ovs_cv_name[]=yes], [ovs_cv_name[]=no])
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [if test -s conftest.err && grep "unrecognized option" conftest.err; then ovs_cv_name[]=no; else ovs_cv_name[]=yes; fi], [ovs_cv_name[]=no])
CFLAGS="$ovs_save_CFLAGS"])
if test $ovs_cv_name = yes; then
m4_if([$2], [], [:], [$2])
projects / cascardo / ovs.git / blobdiff