X-Git-Url: http://git.cascardo.eti.br/?a=blobdiff_plain;f=acinclude.m4;h=11c77877d46ce0f5cc893eca47b22aeb79257863;hb=HEAD;hp=3cf4061bd1784fee6eee62e42d71149114bfb84e;hpb=870b54e7c7ce23660e6db4999e58d9e6ac2ea618;p=cascardo%2Fovs.git diff --git a/acinclude.m4 b/acinclude.m4 index 3cf4061bd..11c77877d 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -1,6 +1,6 @@ # -*- autoconf -*- -# Copyright (c) 2008, 2009, 2010, 2011 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. @@ -22,96 +22,220 @@ AC_DEFUN([OVS_ENABLE_WERROR], [], [enable_Werror=no]) AC_CONFIG_COMMANDS_PRE( [if test "X$enable_Werror" = Xyes; then - CFLAGS="$CFLAGS -Werror" + OVS_CFLAGS="$OVS_CFLAGS -Werror" fi])]) -dnl OVS_CHECK_LINUX26 +dnl OVS_CHECK_LINUX dnl dnl Configure linux kernel source tree -AC_DEFUN([OVS_CHECK_LINUX26], [ - AC_ARG_WITH([l26], - [AC_HELP_STRING([--with-l26=/path/to/linux-2.6], - [Specify the linux 2.6 kernel build directory])], - [KBUILD26="$withval"], [KBUILD26=])dnl - AC_ARG_WITH([l26-source], - [AC_HELP_STRING([--with-l26-source=/path/to/linux-2.6-source], - [Specify the linux 2.6 kernel source directory - (usually figured out automatically from build - directory)])], - [KSRC26="$withval"], [KSRC26=])dnl - if test -n "$KBUILD26"; then - KBUILD26=`eval echo "$KBUILD26"` - case $KBUILD26 in +AC_DEFUN([OVS_CHECK_LINUX], [ + AC_ARG_WITH([linux], + [AC_HELP_STRING([--with-linux=/path/to/linux], + [Specify the Linux kernel build directory])]) + AC_ARG_WITH([linux-source], + [AC_HELP_STRING([--with-linux-source=/path/to/linux-source], + [Specify the Linux kernel source directory + (usually figured out automatically from build + directory)])]) + + # Deprecated equivalents to --with-linux, --with-linux-source. + AC_ARG_WITH([l26]) + AC_ARG_WITH([l26-source]) + + if test X"$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_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 $KBUILD26 gives us the "build" headers. + # We want the source headers, but $KBUILD gives us the "build" headers. # Use heuristics to find the source headers. - AC_MSG_CHECKING([for Linux 2.6 source directory]) - if test -n "$KSRC26"; then - KSRC26=`eval echo "$KSRC26"` - case $KSRC26 in + AC_MSG_CHECKING([for Linux source directory]) + if test -n "$KSRC"; then + KSRC=`eval echo "$KSRC"` + case $KSRC in /*) ;; - *) KSRC26=`pwd`/$KSRC26 ;; + *) KSRC=`pwd`/$KSRC ;; esac - if test ! -e $KSRC26/include/linux/kernel.h; then - AC_MSG_ERROR([$KSRC26 is not a kernel source directory)]) + if test ! -e $KSRC/include/linux/kernel.h; then + AC_MSG_ERROR([$KSRC is not a kernel source directory]) fi else - KSRC26=$KBUILD26 - if test ! -e $KSRC26/include/linux/kernel.h; then - case `echo "$KBUILD26" | sed 's,/*$,,'` in # ( - */build) - KSRC26=`echo "$KBUILD26" | sed 's,/build/*$,/source,'` - ;; # ( - *) - KSRC26=`(cd $KBUILD26 && pwd -P) | sed 's,-[[^-]]*$,-common,'` - ;; - esac + 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 $KSRC26/include/linux/kernel.h; then - AC_MSG_ERROR([cannot find source directory (please use --with-l26-source)]) + if test ! -e "$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 "$KBUILD26" = "$KSRC26"; then - AC_ERROR([Linux kernel in $KBUILD26 is not version 2.6]) + AC_MSG_RESULT([$kversion]) + + if test "$version" -ge 4; then + if test "$version" = 4 && test "$patchlevel" -le 3; then + : # Linux 4.x else - AC_ERROR([Linux kernel in build tree $KBUILD26 (source tree $KSRC26) is not version 2.6]) + 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 $kversion, but version 2.6.32 or later is required]) + else + : # Linux 2.6.x fi fi - if test ! -e "$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 "$KBUILD"/include/generated/uapi/linux/version.h)|| \ + (test ! -e "$KBUILD"/include/linux/autoconf.h && \ + test ! -e "$KBUILD"/include/generated/autoconf.h); then + AC_MSG_ERROR([Linux kernel source in $KBUILD is not configured]) fi - OVS_CHECK_LINUX26_COMPAT - elif test -n "$KSRC26"; then - AC_MSG_ERROR([--with-l26-source may not be specified without --with-l26]) + OVS_CHECK_LINUX_COMPAT fi - AM_CONDITIONAL(L26_ENABLED, test -n "$KBUILD26") + AM_CONDITIONAL(LINUX_ENABLED, test -n "$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 + #include ], + [int rte_argc; char ** rte_argv; + rte_eal_init(rte_argc, rte_argv);])], + [found=true]) + if $found; then + break + fi + done + if $found; then :; else + AC_MSG_ERROR([cannot link with dpdk]) + fi + CFLAGS="$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([DPDK_NETDEV], test -n "$RTE_SDK") ]) dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH]) @@ -143,96 +267,305 @@ AC_DEFUN([OVS_GREP_IFELSE], [ 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__WITH_), with and +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. AC_DEFUN([OVS_DEFINE], [ - echo '#define $1 1' >> datapath/linux-2.6/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_RESULT([yes]) - OVS_DEFINE([HAVE_LOG2_H]) - else - AC_MSG_RESULT([no]) - fi + 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 $KBUILD26. -AC_DEFUN([OVS_CHECK_LINUX26_COMPAT], [ - rm -f datapath/linux-2.6/kcompat.h.new - mkdir -p datapath/linux-2.6 - : > datapath/linux-2.6/kcompat.h.new - - OVS_GREP_IFELSE([$KSRC26/arch/x86/include/asm/checksum_32.h], [src_err,], +dnl the directory in $KBUILD. +AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [ + rm -f datapath/linux/kcompat.h.new + mkdir -p datapath/linux + : > datapath/linux/kcompat.h.new + + echo '#include +#ifndef RHEL_RELEASE_CODE +#define RHEL_RELEASE_CODE 0 +#define RHEL_RELEASE_VERSION(a, b) 0 +#endif' >> datapath/linux/kcompat.h.new + + OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,], [OVS_DEFINE([HAVE_CSUM_COPY_DBG])]) - OVS_GREP_IFELSE([$KSRC26/include/linux/err.h], [ERR_CAST]) - - OVS_GREP_IFELSE([$KSRC26/include/linux/in.h], [ipv4_is_multicast]) - - OVS_GREP_IFELSE([$KSRC26/include/linux/netdevice.h], [dev_disable_lro]) - OVS_GREP_IFELSE([$KSRC26/include/linux/netdevice.h], [dev_get_stats]) - OVS_GREP_IFELSE([$KSRC26/include/linux/netdevice.h], [dev_get_by_index_rcu]) - - OVS_GREP_IFELSE([$KSRC26/include/linux/rcupdate.h], [rcu_read_lock_held], [], - [OVS_GREP_IFELSE([$KSRC26/include/linux/rtnetlink.h], + OVS_GREP_IFELSE([$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([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held]) # Check for the proto_data_valid member in struct sk_buff. The [^@] # is necessary because some versions of this header remove the # member but retain the kerneldoc comment that describes it (which # starts with @). The brackets must be doubled because of m4 # quoting rules. - OVS_GREP_IFELSE([$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_DEFINE([HAVE_MAC_RAW])]) - OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_dst(], + OVS_GREP_IFELSE([$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([$KSRC26/include/linux/skbuff.h], + OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_copy_from_linear_data_offset]) - OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_cow_head]) - OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_transport_header], + OVS_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/icmpv6.h], [icmp6_hdr], + OVS_GREP_IFELSE([$KSRC/include/linux/icmpv6.h], [icmp6_hdr], [OVS_DEFINE([HAVE_ICMP6_HDR])]) - OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [skb_warn_if_lro], + OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro], [OVS_DEFINE([HAVE_SKB_WARN_LRO])]) - OVS_GREP_IFELSE([$KSRC26/include/linux/skbuff.h], [consume_skb]) - - OVS_GREP_IFELSE([$KSRC26/include/linux/string.h], [kmemdup], [], - [OVS_GREP_IFELSE([$KSRC26/include/linux/slab.h], [kmemdup])]) - - OVS_GREP_IFELSE([$KSRC26/include/linux/types.h], [bool], + OVS_GREP_IFELSE([$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([$KSRC26/include/linux/types.h], [__wsum], + OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum], + [OVS_DEFINE([HAVE_CSUM_TYPES])]) + OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum], [OVS_DEFINE([HAVE_CSUM_TYPES])]) - OVS_GREP_IFELSE([$KSRC26/include/net/checksum.h], [csum_replace4]) - OVS_GREP_IFELSE([$KSRC26/include/net/checksum.h], [csum_unfold]) - - OVS_GREP_IFELSE([$KSRC26/include/net/netlink.h], [NLA_NUL_STRING]) - OVS_GREP_IFELSE([$KSRC26/include/net/netlink.h], [nla_get_be16]) - OVS_GREP_IFELSE([$KSRC26/include/net/netlink.h], [nla_find_nested]) - - OVS_GREP_IFELSE([$KSRC26/include/linux/if_link.h], [rtnl_link_stats64]) - - OVS_GREP_IFELSE([$KSRC26/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD], + OVS_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 "$patchlevel" -ge 10; then + OVS_DEFINE([OVS_FRAGMENT_BACKPORT]) + fi - OVS_CHECK_LOG2_H - - if cmp -s datapath/linux-2.6/kcompat.h.new \ - datapath/linux-2.6/kcompat.h >/dev/null 2>&1; then - rm datapath/linux-2.6/kcompat.h.new + if cmp -s datapath/linux/kcompat.h.new \ + datapath/linux/kcompat.h >/dev/null 2>&1; then + rm datapath/linux/kcompat.h.new else - mv datapath/linux-2.6/kcompat.h.new datapath/linux-2.6/kcompat.h + mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h fi ]) @@ -247,6 +580,23 @@ AC_DEFUN([OVS_CHECK_IF_PACKET], [Define to 1 if net/if_packet.h is available.]) fi]) +dnl Checks for net/if_dl.h. +dnl +dnl (We use this as a proxy for checking whether we're building on FreeBSD +dnl or NetBSD.) +AC_DEFUN([OVS_CHECK_IF_DL], + [AC_CHECK_HEADER([net/if_dl.h], + [HAVE_IF_DL=yes], + [HAVE_IF_DL=no]) + AM_CONDITIONAL([HAVE_IF_DL], [test "$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 @@ -261,7 +611,13 @@ AC_DEFUN([OVS_CHECK_STRTOK_R], [AC_LANG_PROGRAM([#include #include ], - [[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); @@ -269,6 +625,7 @@ AC_DEFUN([OVS_CHECK_STRTOK_R], 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], @@ -286,16 +643,24 @@ dnl This file is free software; the Free Software Foundation 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]) @@ -304,6 +669,21 @@ AC_DEFUN([OVS_CHECK_CC_OPTION], 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 WARNING_FLAGS. @@ -353,7 +733,7 @@ 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_DEFUN([OVS_CHECK_MAKE_IF], [AC_CACHE_CHECK( [whether ${MAKE-make} has GNU make \$(if) extension], [ovs_cv_gnu_make_if], @@ -373,13 +753,127 @@ EOF 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])]) + 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 - &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], - [OVS_MAKE_HAS_IF( - [AC_CONFIG_COMMANDS_PRE( - [: ${SPARSE=sparse} - AC_SUBST([SPARSE]) - CC='$(if $(C),REAL_CC="'"$CC"'" CHECK="$(SPARSE) -I $(top_srcdir)/include/sparse" cgcc,'"$CC"')'])])]) + [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_setname_np(pthread_self(), "name");])], + [ovs_cv_pthread_setname_np=glibc], + [AC_LINK_IFELSE( + [AC_LANG_PROGRAM([#include +], [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])])