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compat: Backport 'dst' functions.
[mirror_ovs.git] / acinclude.m4
CommitLineData
064af421
BP		 1# -*- autoconf -*-
2
416e7132 3# Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 Nicira, Inc.
064af421 4#
a14bc59f
BP		 5# Licensed under the Apache License, Version 2.0 (the "License");
6# you may not use this file except in compliance with the License.
7# You may obtain a copy of the License at:
064af421 8#
a14bc59f
BP		 9# http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing, software
12# distributed under the License is distributed on an "AS IS" BASIS,
13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14# See the License for the specific language governing permissions and
15# limitations under the License.
064af421 16
a64e37a1
BP		 17dnl OVS_ENABLE_WERROR
18AC_DEFUN([OVS_ENABLE_WERROR],
19 [AC_ARG_ENABLE(
20 [Werror],
21 [AC_HELP_STRING([--enable-Werror], [Add -Werror to CFLAGS])],
22 [], [enable_Werror=no])
23 AC_CONFIG_COMMANDS_PRE(
24 [if test "X$enable_Werror" = Xyes; then
95626395 25 OVS_CFLAGS="$OVS_CFLAGS -Werror"
a64e37a1
BP		 26 fi])])
27
e3438006 28dnl OVS_CHECK_LINUX
064af421
BP		 29dnl
30dnl Configure linux kernel source tree
e3438006 31AC_DEFUN([OVS_CHECK_LINUX], [
8a2d6596
BP		 32 AC_ARG_WITH([linux],
33 [AC_HELP_STRING([--with-linux=/path/to/linux],
34 [Specify the Linux kernel build directory])])
35 AC_ARG_WITH([linux-source],
36 [AC_HELP_STRING([--with-linux-source=/path/to/linux-source],
37 [Specify the Linux kernel source directory
a0903134
YT		 38 (usually figured out automatically from build
39 directory)])])
8a2d6596
BP		 40
41 # Deprecated equivalents to --with-linux, --with-linux-source.
42 AC_ARG_WITH([l26])
43 AC_ARG_WITH([l26-source])
44
45 if test X"$with_linux" != X; then
46 KBUILD=$with_linux
47 elif test X"$with_l26" != X; then
48 KBUILD=$with_l26
49 AC_MSG_WARN([--with-l26 is deprecated, please use --with-linux instead])
50 else
51 KBUILD=
52 fi
53
54 if test X"$KBUILD" != X; then
55 if test X"$with_linux_source" != X; then
56 KSRC=$with_linux_source
57 elif test X"$with_l26_source" != X; then
58 KSRC=$with_l26_source
59 AC_MSG_WARN([--with-l26-source is deprecated, please use --with-linux-source instead])
0a89c170
BP		 60 else
61 KSRC=
8a2d6596
BP		 62 fi
63 elif test X"$with_linux_source" != X || test X"$with_l26_source" != X; then
64 AC_MSG_ERROR([Linux source directory may not be specified without Linux build directory])
65 fi
66
e3438006
BP		 67 if test -n "$KBUILD"; then
68 KBUILD=`eval echo "$KBUILD"`
69 case $KBUILD in
0b6d72fc 70 /*) ;;
e3438006 71 *) KBUILD=`pwd`/$KBUILD ;;
0b6d72fc 72 esac
064af421 73
7c9e113b
BP		 74 # The build directory is what the user provided.
75 # Make sure that it exists.
8a2d6596 76 AC_MSG_CHECKING([for Linux build directory])
e3438006 77 if test -d "$KBUILD"; then
a0903134
YT		 78 AC_MSG_RESULT([$KBUILD])
79 AC_SUBST(KBUILD)
064af421 80 else
a0903134
YT		 81 AC_MSG_RESULT([no])
82 AC_ERROR([source dir $KBUILD doesn't exist])
064af421
BP		 83 fi
84
7c9e113b 85 # Debian breaks kernel headers into "source" header and "build" headers.
e3438006 86 # We want the source headers, but $KBUILD gives us the "build" headers.
7c9e113b 87 # Use heuristics to find the source headers.
8a2d6596 88 AC_MSG_CHECKING([for Linux source directory])
e3438006
BP		 89 if test -n "$KSRC"; then
90 KSRC=`eval echo "$KSRC"`
91 case $KSRC in
f5fb5de6 92 /*) ;;
e3438006 93 *) KSRC=`pwd`/$KSRC ;;
b57f675c 94 esac
e3438006 95 if test ! -e $KSRC/include/linux/kernel.h; then
53319f95 96 AC_MSG_ERROR([$KSRC is not a kernel source directory])
f5fb5de6
BP		 97 fi
98 else
e3438006
BP		 99 KSRC=$KBUILD
100 if test ! -e $KSRC/include/linux/kernel.h; then
fe0731b1
BP		 101 # Debian kernel build Makefiles tend to include a line of the form:
102 # MAKEARGS := -C /usr/src/linux-headers-3.2.0-1-common O=/usr/src/linux-headers-3.2.0-1-486
103 # First try to extract the source directory from this line.
104 KSRC=`sed -n 's/.*-C \([[^ ]]*\).*/\1/p' "$KBUILD"/Makefile`
105 if test ! -e "$KSRC"/include/linux/kernel.h; then
106 # Didn't work. Fall back to name-based heuristics that used to work.
107 case `echo "$KBUILD" | sed 's,/*$,,'` in # (
108 */build)
109 KSRC=`echo "$KBUILD" | sed 's,/build/*$,/source,'`
110 ;; # (
111 *)
112 KSRC=`(cd $KBUILD && pwd -P) | sed 's,-[[^-]]*$,-common,'`
113 ;;
114 esac
115 fi
f5fb5de6 116 fi
fe0731b1 117 if test ! -e "$KSRC"/include/linux/kernel.h; then
8a2d6596 118 AC_MSG_ERROR([cannot find source directory (please use --with-linux-source)])
7c9e113b
BP		 119 fi
120 fi
e3438006 121 AC_MSG_RESULT([$KSRC])
7c9e113b
BP		 122
123 AC_MSG_CHECKING([for kernel version])
71fe9970 124 version=`sed -n 's/^VERSION = //p' "$KSRC/Makefile"`
e3438006
BP		 125 patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$KSRC/Makefile"`
126 sublevel=`sed -n 's/^SUBLEVEL = //p' "$KSRC/Makefile"`
71fe9970 127 if test X"$version" = X || test X"$patchlevel" = X; then
7c9e113b 128 AC_ERROR([cannot determine kernel version])
71fe9970
BP		 129 elif test X"$sublevel" = X; then
130 kversion=$version.$patchlevel
131 else
132 kversion=$version.$patchlevel.$sublevel
7c9e113b 133 fi
71fe9970
BP		 134 AC_MSG_RESULT([$kversion])
135
3afcde43 136 if test "$version" -ge 4; then
e23775f2 137 if test "$version" = 4 && test "$patchlevel" -le 3; then
3afcde43 138 : # Linux 4.x
d76aabea 139 else
e23775f2 140 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 4.3.x is not supported (please refer to the FAQ for advice)])
d76aabea 141 fi
3afcde43
JS		 142 elif test "$version" = 3; then
143 : # Linux 3.x
71fe9970 144 else
d76aabea
PS		 145 if test "$version" -le 1 || test "$patchlevel" -le 5 || test "$sublevel" -le 31; then
146 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 2.6.32 or later is required])
7c9e113b 147 else
d76aabea 148 : # Linux 2.6.x
7c9e113b 149 fi
064af421 150 fi
2520f452
IY		 151 if (test ! -e "$KBUILD"/include/linux/version.h && \
152 test ! -e "$KBUILD"/include/generated/uapi/linux/version.h)|| \
e3438006
BP		 153 (test ! -e "$KBUILD"/include/linux/autoconf.h && \
154 test ! -e "$KBUILD"/include/generated/autoconf.h); then
a0903134 155 AC_MSG_ERROR([Linux kernel source in $KBUILD is not configured])
064af421 156 fi
e3438006 157 OVS_CHECK_LINUX_COMPAT
064af421 158 fi
e3438006 159 AM_CONDITIONAL(LINUX_ENABLED, test -n "$KBUILD")
064af421
BP		 160])
161
8a9562d2
PS		 162dnl OVS_CHECK_DPDK
163dnl
164dnl Configure DPDK source tree
165AC_DEFUN([OVS_CHECK_DPDK], [
166 AC_ARG_WITH([dpdk],
167 [AC_HELP_STRING([--with-dpdk=/path/to/dpdk],
e2e54517 168 [Specify the DPDK build directory])])
8a9562d2
PS		 169
170 if test X"$with_dpdk" != X; then
171 RTE_SDK=$with_dpdk
172
173 DPDK_INCLUDE=$RTE_SDK/include
174 DPDK_LIB_DIR=$RTE_SDK/lib
18f777b2 175 DPDK_LIB="-ldpdk"
10d01ad2 176 DPDK_EXTRA_LIB=""
613750ab 177 RTE_SDK_FULL=`readlink -f $RTE_SDK`
10d01ad2 178
693e1138 179 AC_COMPILE_IFELSE(
613750ab 180 [AC_LANG_PROGRAM([#include <$RTE_SDK_FULL/include/rte_config.h>
693e1138
GM		 181#if !RTE_LIBRTE_VHOST_USER
182#error
183#endif], [])],
10d01ad2
DDP		 184 [], [AC_DEFINE([VHOST_CUSE], [1], [DPDK vhost-cuse support enabled, vhost-user disabled.])
185 DPDK_EXTRA_LIB="-lfuse"])
8a9562d2 186
95626395
TG		 187 ovs_save_CFLAGS="$CFLAGS"
188 ovs_save_LDFLAGS="$LDFLAGS"
c1223b11
DDP		 189 LDFLAGS="$LDFLAGS -L$DPDK_LIB_DIR"
190 CFLAGS="$CFLAGS -I$DPDK_INCLUDE"
191
192 # On some systems we have to add -ldl to link with dpdk
193 #
194 # This code, at first, tries to link without -ldl (""),
195 # then adds it and tries again.
196 # Before each attempt the search cache must be unset,
197 # otherwise autoconf will stick with the old result
198
199 found=false
200 save_LIBS=$LIBS
201 for extras in "" "-ldl"; do
3c94676c 202 LIBS="$DPDK_LIB $extras $save_LIBS $DPDK_EXTRA_LIB"
c1223b11
DDP		 203 AC_LINK_IFELSE(
204 [AC_LANG_PROGRAM([#include <rte_config.h>
205 #include <rte_eal.h>],
206 [int rte_argc; char ** rte_argv;
207 rte_eal_init(rte_argc, rte_argv);])],
208 [found=true])
209 if $found; then
210 break
211 fi
212 done
213 if $found; then :; else
214 AC_MSG_ERROR([cannot link with dpdk])
215 fi
95626395
TG		 216 CFLAGS="$ovs_save_CFLAGS"
217 LDFLAGS="$ovs_save_LDFLAGS"
218 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
543342a4 219 OVS_CFLAGS="$OVS_CFLAGS -I$DPDK_INCLUDE -mssse3"
8a9562d2 220
3c94676c 221 # DPDK pmd drivers are not linked unless --whole-archive is used.
d7310583
DDP		 222 #
223 # This happens because the rest of the DPDK code doesn't use any symbol in
224 # the pmd driver objects, and the drivers register themselves using an
225 # __attribute__((constructor)) function.
226 #
227 # These options are specified inside a single -Wl directive to prevent
228 # autotools from reordering them.
3c94676c 229 DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
9475dfeb 230 AC_SUBST([DPDK_vswitchd_LDFLAGS])
8a9562d2 231 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
7d1ced01 232
8a9562d2
PS		 233 else
234 RTE_SDK=
235 fi
236
237 AM_CONDITIONAL([DPDK_NETDEV], test -n "$RTE_SDK")
238])
239
8828e5c7 240dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
064af421
BP		 241dnl
242dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
8828e5c7
BP		 243dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
244dnl <REGEX> translated to uppercase.
064af421
BP		 245AC_DEFUN([OVS_GREP_IFELSE], [
246 AC_MSG_CHECKING([whether $2 matches in $1])
7507ec48
JG		 247 if test -f $1; then
248 grep '$2' $1 >/dev/null 2>&1
249 status=$?
250 case $status in
251 0)
252 AC_MSG_RESULT([yes])
8828e5c7 253 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
7507ec48
JG		 254 ;;
255 1)
256 AC_MSG_RESULT([no])
257 $4
258 ;;
259 *)
260 AC_MSG_ERROR([grep exited with status $status])
261 ;;
262 esac
263 else
264 AC_MSG_RESULT([file not found])
265 $4
266 fi
064af421
BP		 267])
268
13dd4a97
JS		 269dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
270dnl
271dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
272dnl structure definition. If this is successful, runs IF-MATCH, otherwise
273dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
274dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
275dnl translated to uppercase.
276AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
277 AC_MSG_CHECKING([whether $2 has member $3 in $1])
278 if test -f $1; then
83a27884 279 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
13dd4a97
JS		 280 status=$?
281 case $status in
282 0)
283 AC_MSG_RESULT([yes])
284 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
285 ;;
286 1)
287 AC_MSG_RESULT([no])
288 $5
289 ;;
290 *)
291 AC_MSG_ERROR([grep exited with status $status])
292 ;;
293 esac
294 else
295 AC_MSG_RESULT([file not found])
296 $5
297 fi
298])
299
064af421
BP		 300dnl OVS_DEFINE(NAME)
301dnl
302dnl Defines NAME to 1 in kcompat.h.
303AC_DEFUN([OVS_DEFINE], [
22bcc0e7 304 echo '#define $1 1' >> datapath/linux/kcompat.h.new
064af421
BP		 305])
306
e3438006 307dnl OVS_CHECK_LINUX_COMPAT
064af421
BP		 308dnl
309dnl Runs various Autoconf checks on the Linux 2.6 kernel source in
e3438006
BP		 310dnl the directory in $KBUILD.
311AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
22bcc0e7
JG		 312 rm -f datapath/linux/kcompat.h.new
313 mkdir -p datapath/linux
314 : > datapath/linux/kcompat.h.new
4aa13c0c 315
e23775f2
PS		 316 echo '#include <linux/version.h>
317#ifndef RHEL_RELEASE_CODE
318#define RHEL_RELEASE_CODE 0
319#define RHEL_RELEASE_VERSION(a, b) 0
320#endif' >> datapath/linux/kcompat.h.new
321
e3438006 322 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
25fb3596
JG		 323 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
324
e23775f2
PS		 325 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
326 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
327 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
328
e3438006 329 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
4303ec34 330 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
4aa13c0c 331
d923a695 332 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
e2f3178f 333 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
d923a695 334
e23775f2
PS		 335 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
336 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
337 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
d923a695 338 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
ec96e663 339 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
d923a695 340
e3438006 341 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
46d69d18 342 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
2ea82414
PS		 343 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
344 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
e23775f2
PS		 345 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
346 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
347
13dd4a97
JS		 348 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
349 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
920fc091 350 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_is_fragment])
e23775f2 351 OVS_GREP_IFELSE([$KSRC/include/net/dst_metadata.h], [metadata_dst])
4aa13c0c 352
fdce83a3
PS		 353 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
354 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
e3438006
BP		 355 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
356 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
357 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
42d5dd95
TG		 358 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
359 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
e23775f2 360 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
d1890de5 361 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
e2f3178f 362 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats])
572e54fa
FL		 363 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_rx_handler_register])
364 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_extended])
365 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [rx_handler_func_t.*pskb],
366 [OVS_DEFINE([HAVE_RX_HANDLER_PSKB])])
e23775f2
PS		 367 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
368 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
369 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
370 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
371 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
372 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
373
374 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
375 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
cd7330d0
PS		 376 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
377 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
e2f3178f 378
057772cf
JS		 379 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
380 [tmpl_alloc.*conntrack_zone],
381 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
382
e2f3178f 383 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32])
4aa13c0c 384
e23775f2
PS		 385 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
386 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
387 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
388 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
389 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
390
e3438006
BP		 391 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
392 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
cf6cb3a2 393 [rcu_read_lock_held])])
8fa52250 394 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
cf6cb3a2 395
6a33828d
BP		 396 # Check for the proto_data_valid member in struct sk_buff. The [^@]
397 # is necessary because some versions of this header remove the
398 # member but retain the kerneldoc comment that describes it (which
399 # starts with @). The brackets must be doubled because of m4
400 # quoting rules.
e3438006 401 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
6a33828d 402 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
ccb75a28 403 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
e23775f2
PS		 404 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
405 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_mac_header])
406 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_network_header])
d23239a2 407 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
e23775f2
PS		 408 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_scrub_packet.*xnet],
409 [OVS_DEFINE([HAVE_SKB_SCRUB_PACKET_XNET])])
60c4904f 410 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
5640cbd8
JG		 411 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
412 [OVS_DEFINE([HAVE_U16_RXHASH])])
e3438006 413 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
85444c3f 414 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
e3438006 415 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
8828e5c7 416 [skb_copy_from_linear_data_offset])
b9c15df9
PS		 417 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
418 [skb_reset_tail_pointer])
e3438006
BP		 419 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
420 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_transport_header],
4aa13c0c 421 [OVS_DEFINE([HAVE_SKBUFF_HEADER_HELPERS])])
e3438006 422 OVS_GREP_IFELSE([$KSRC/include/linux/icmpv6.h], [icmp6_hdr],
d31f1109 423 [OVS_DEFINE([HAVE_ICMP6_HDR])])
e3438006 424 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
4aa13c0c 425 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
e3438006 426 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
6c4ea27c 427 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
da4bbeb7 428 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
0aa6fda7 429 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
d923a695 430 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
dc0d542d 431 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
1edc458d 432 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
e2f3178f
PK		 433 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash])
434 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
705e9260
PS		 435 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
436 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
75e93287
FL		 437 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
438 [OVS_DEFINE([HAVE_L4_RXHASH])])
5cce04b6 439 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
97894370
TG		 440 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
441 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
4aa13c0c 442
e3438006 443 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
4aa13c0c 444 [OVS_DEFINE([HAVE_BOOL_TYPE])])
e3438006 445 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
e215ebca 446 [OVS_DEFINE([HAVE_CSUM_TYPES])])
8dbe1f9f
PS		 447 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
448 [OVS_DEFINE([HAVE_CSUM_TYPES])])
4aa13c0c 449
e3438006
BP		 450 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
451 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
4aa13c0c 452
0d03e51c
JS		 453 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
454
114fce23
SG		 455 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
456 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
14002a59 457 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
705e9260 458 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_new_unicast])
6233a1bd
TG		 459 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
460 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
c623ba49 461 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
13dd4a97
JS		 462 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
463 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
464
465 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
466 [genl_multicast_group], [id])
fdce83a3 467 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
13dd4a97 468
cc1d0dea 469 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
e23775f2 470 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
8abaa53c 471 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
e23775f2 472 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
e3438006 473 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
42d5dd95
TG		 474 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
475 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
476 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
dd693f9b 477 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
e3438006 478 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
0fcc086d 479 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
4aa13c0c 480
c4e976db
JG		 481 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
482
e3438006 483 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
431488e6 484 [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
1f649f1c 485 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
17e3889f 486 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
e23775f2 487 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
431488e6 488
09f27436
JG		 489 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
490
f285d3e7
TG		 491 OVS_GREP_IFELSE([$KSRC/include/linux/openvswitch.h], [openvswitch_handle_frame_hook],
492 [OVS_DEFINE([HAVE_RHEL_OVS_HOOK])])
3174a818
TG		 493 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
494 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
e23775f2 495 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [VXLAN_HF_RCO])
f6a0c895 496 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
13dd4a97
JS		 497 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
498 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
499 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
500 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_set_csum])
e23775f2
PS		 501 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
502 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [ipv6_v6only],
503 [OVS_DEFINE([HAVE_UDP_TUNNEL_IPV6])])
504
505 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
f6a0c895
TG		 506 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
507 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
508 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
f285d3e7 509
21a719d6
FL		 510 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
511 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
512
22bcc0e7
JG		 513 if cmp -s datapath/linux/kcompat.h.new \
514 datapath/linux/kcompat.h >/dev/null 2>&1; then
515 rm datapath/linux/kcompat.h.new
064af421 516 else
22bcc0e7 517 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
064af421
BP		 518 fi
519])
520
521dnl Checks for net/if_packet.h.
522AC_DEFUN([OVS_CHECK_IF_PACKET],
523 [AC_CHECK_HEADER([net/if_packet.h],
524 [HAVE_IF_PACKET=yes],
525 [HAVE_IF_PACKET=no])
526 AM_CONDITIONAL([HAVE_IF_PACKET], [test "$HAVE_IF_PACKET" = yes])
527 if test "$HAVE_IF_PACKET" = yes; then
528 AC_DEFINE([HAVE_IF_PACKET], [1],
529 [Define to 1 if net/if_packet.h is available.])
530 fi])
531
f6eb6b20 532dnl Checks for net/if_dl.h.
d30e714c 533dnl
d23fa2ed
YT		 534dnl (We use this as a proxy for checking whether we're building on FreeBSD
535dnl or NetBSD.)
9360d9b7
EM		 536AC_DEFUN([OVS_CHECK_IF_DL],
537 [AC_CHECK_HEADER([net/if_dl.h],
538 [HAVE_IF_DL=yes],
539 [HAVE_IF_DL=no])
540 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
541 if test "$HAVE_IF_DL" = yes; then
542 AC_DEFINE([HAVE_IF_DL], [1],
543 [Define to 1 if net/if_dl.h is available.])
d30e714c 544
d23fa2ed 545 # On these platforms we use libpcap to access network devices.
d30e714c 546 AC_SEARCH_LIBS([pcap_open_live], [pcap])
9360d9b7
EM		 547 fi])
548
e50097d2
BP		 549dnl Checks for buggy strtok_r.
550dnl
551dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
552dnl with optimization that can cause segfaults:
553dnl
554dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
555AC_DEFUN([OVS_CHECK_STRTOK_R],
556 [AC_CACHE_CHECK(
557 [whether strtok_r macro segfaults on some inputs],
558 [ovs_cv_strtok_r_bug],
559 [AC_RUN_IFELSE(
560 [AC_LANG_PROGRAM([#include <stdio.h>
561 #include <string.h>
562 ],
416e7132
BP		 563 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
564 /* Assume bug is present, because relatively minor
565 changes in compiler settings (e.g. optimization
566 level) can make it crop up. */
567 return 1;
568 #else
569 char string[] = ":::";
e50097d2
BP		 570 char *save_ptr = (char *) 0xc0ffee;
571 char *token1, *token2;
572 token1 = strtok_r(string, ":", &save_ptr);
573 token2 = strtok_r(NULL, ":", &save_ptr);
5819a7cd 574 freopen ("/dev/null", "w", stdout);
e50097d2
BP		 575 printf ("%s %s\n", token1, token2);
576 return 0;
416e7132 577 #endif
e50097d2
BP		 578 ]])],
579 [ovs_cv_strtok_r_bug=no],
580 [ovs_cv_strtok_r_bug=yes],
581 [ovs_cv_strtok_r_bug=yes])])
582 if test $ovs_cv_strtok_r_bug = yes; then
583 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
584 [Define if strtok_r macro segfaults on some inputs])
585 fi
586])
587
064af421
BP		 588dnl ----------------------------------------------------------------------
589dnl These macros are from GNU PSPP, with the following original license:
590dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
591dnl This file is free software; the Free Software Foundation
592dnl gives unlimited permission to copy and/or distribute it,
593dnl with or without modifications, as long as this notice is preserved.
594
50194820 595AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
7c96151e 596 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-=], [__])])dnl
064af421
BP		 597 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
598 [ovs_save_CFLAGS="$CFLAGS"
50194820
BP		 599 dnl Include -Werror in the compiler options, because without -Werror
600 dnl clang's GCC-compatible compiler driver does not return a failure
601 dnl exit status even though it complains about options it does not
602 dnl understand.
c2deac54
YT		 603 dnl
604 dnl Also, check stderr as gcc exits with status 0 for options
605 dnl rejected at getopt level.
606 dnl % touch /tmp/a.c
607 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
608 dnl gcc: unrecognized option '-Qunused-arguments'
609 dnl 0
610 dnl %
50194820 611 CFLAGS="$CFLAGS $WERROR $1"
c2deac54 612 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [if test -s conftest.err && grep "unrecognized option" conftest.err; then ovs_cv_name[]=no; else ovs_cv_name[]=yes; fi], [ovs_cv_name[]=no])
064af421
BP		 613 CFLAGS="$ovs_save_CFLAGS"])
614 if test $ovs_cv_name = yes; then
83f6c050 615 m4_if([$2], [], [:], [$2])
064af421
BP		 616 else
617 m4_if([$3], [], [:], [$3])
618 fi
619])
620
50194820
BP		 621dnl OVS_CHECK_WERROR
622dnl
623dnl Check whether the C compiler accepts -Werror.
624dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
625AC_DEFUN([OVS_CHECK_WERROR],
626 [WERROR=
627 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
628
629dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
630dnl Check whether the given C compiler OPTION is accepted.
631dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
632AC_DEFUN([OVS_CHECK_CC_OPTION],
633 [AC_REQUIRE([OVS_CHECK_WERROR])
634 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
635
064af421
BP		 636dnl OVS_ENABLE_OPTION([OPTION])
637dnl Check whether the given C compiler OPTION is accepted.
d161c099 638dnl If so, add it to WARNING_FLAGS.
064af421
BP		 639dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
640AC_DEFUN([OVS_ENABLE_OPTION],
d161c099
BP		 641 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
642 AC_SUBST([WARNING_FLAGS])])
c72e245a
BP		 643
644dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
645dnl Check whether the given C compiler OPTION is accepted.
646dnl If so, enable the given Automake CONDITIONAL.
647
648dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
649AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
650 [OVS_CHECK_CC_OPTION(
651 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
652 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
064af421 653dnl ----------------------------------------------------------------------
ed2d4f6a
BP		 654
655dnl Check for too-old XenServer.
656AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
657 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
658 [if test -e /etc/redhat-release; then
659 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
660 fi
661 if test -z "$ovs_cv_xsversion"; then
662 ovs_cv_xsversion=none
663 fi])
664 case $ovs_cv_xsversion in
665 none)
666 ;;
667
668 [[1-9]][[0-9]]* | dnl XenServer 10 or later
669 [[6-9]]* | dnl XenServer 6 or later
670 5.[[7-9]]* | dnl XenServer 5.7 or later
671 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
672 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
673 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
674 ;;
675
676 *)
677 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.)])
678 ;;
679 esac])
29d935d6
BP		 680
681dnl OVS_MAKE_HAS_IF([if-true], [if-false])
682dnl
683dnl Checks whether make has the GNU make $(if condition,then,else) extension.
684dnl Runs 'if-true' if so, 'if-false' otherwise.
372d58a4 685AC_DEFUN([OVS_CHECK_MAKE_IF],
29d935d6
BP		 686 [AC_CACHE_CHECK(
687 [whether ${MAKE-make} has GNU make \$(if) extension],
688 [ovs_cv_gnu_make_if],
689 [cat <<'EOF' > conftest.mk
690conftest.out:
380f86e4 691 echo $(if x,y,z) > conftest.out
29d935d6
BP		 692.PHONY: all
693EOF
694 rm -f conftest.out
695 AS_ECHO(["$as_me:$LINENO: invoking ${MAKE-make} -f conftest.mk all:"]) >&AS_MESSAGE_LOG_FD 2>&1
696 ${MAKE-make} -f conftest.mk conftest.out >&AS_MESSAGE_LOG_FD 2>&1
697 AS_ECHO(["$as_me:$LINENO: conftest.out contains:"]) >&AS_MESSAGE_LOG_FD 2>&1
698 cat conftest.out >&AS_MESSAGE_LOG_FD 2>&1
699 result=`cat conftest.out`
700 rm -f conftest.mk conftest.out
701 if test "X$result" = "Xy"; then
702 ovs_cv_gnu_make_if=yes
703 else
704 ovs_cv_gnu_make_if=no
372d58a4 705 fi])])
29d935d6 706
b4e1bf8b
BP		 707dnl OVS_CHECK_GNU_MAKE
708dnl
709dnl Checks whether make is GNU make (because Linux kernel Makefiles
710dnl only work with GNU make).
711AC_DEFUN([OVS_CHECK_GNU_MAKE],
712 [AC_CACHE_CHECK(
713 [whether ${MAKE-make} is GNU make],
714 [ovs_cv_gnu_make],
715 [rm -f conftest.out
716 AS_ECHO(["$as_me:$LINENO: invoking ${MAKE-make} --version:"]) >&AS_MESSAGE_LOG_FD 2>&1
717 ${MAKE-make} --version >conftest.out 2>&1
718 cat conftest.out >&AS_MESSAGE_LOG_FD 2>&1
719 result=`cat conftest.out`
720 rm -f conftest.mk conftest.out
721
722 case $result in # (
723 GNU*) ovs_cv_gnu_make=yes ;; # (
724 *) ovs_cv_gnu_make=no ;;
725 esac])
726 AM_CONDITIONAL([GNU_MAKE], [test $ovs_cv_gnu_make = yes])])
727
643c0c34
BP		 728dnl OVS_CHECK_SPARSE_TARGET
729dnl
730dnl The "cgcc" script from "sparse" isn't very good at detecting the
731dnl target for which the code is being built. This helps it out.
732AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
733 [AC_CACHE_CHECK(
734 [target hint for cgcc],
735 [ac_cv_sparse_target],
736 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
737 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
738 [x86_64-*], [ac_cv_sparse_target=x86_64],
739 [ac_cv_sparse_target=other])])
740 AS_CASE([$ac_cv_sparse_target],
741 [x86], [SPARSEFLAGS= CGCCFLAGS=-target=i86],
742 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS=-target=x86_64],
743 [SPARSEFLAGS= CGCCFLAGS=])
744 AC_SUBST([SPARSEFLAGS])
745 AC_SUBST([CGCCFLAGS])])
746
32e96ab7
AZ		 747dnl OVS_SPARSE_EXTRA_INCLUDES
748dnl
749dnl The cgcc script from "sparse" does not search gcc's default
750dnl search path. Get the default search path from GCC and pass
751dnl them to sparse.
752AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
753 AC_SUBST([SPARSE_EXTRA_INCLUDES],
754 [`$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 ' ' `] ))
755
29d935d6
BP		 756dnl OVS_ENABLE_SPARSE
757AC_DEFUN([OVS_ENABLE_SPARSE],
643c0c34 758 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
372d58a4 759 AC_REQUIRE([OVS_CHECK_MAKE_IF])
32e96ab7 760 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
372d58a4
BP		 761 : ${SPARSE=sparse}
762 AC_SUBST([SPARSE])
763 AC_CONFIG_COMMANDS_PRE(
764 [if test $ovs_cv_gnu_make_if = yes; then
38b7a52b 765 CC='$(if $(C),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'
372d58a4 766 fi])])
8a8cd0ac
BP		 767
768dnl OVS_PTHREAD_SET_NAME
769dnl
770dnl This checks for three known variants of pthreads functions for setting
771dnl the name of the current thread:
772dnl
773dnl glibc: int pthread_setname_np(pthread_t, const char *name);
774dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
775dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
776dnl
777dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
778dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
779dnl provide to it.
780dnl
781dnl This macro defines:
782dnl
783dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
784dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
785dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
786AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
787 [AC_CHECK_FUNCS([pthread_set_name_np])
788 if test $ac_cv_func_pthread_set_name_np != yes; then
789 AC_CACHE_CHECK(
790 [for pthread_setname_np() variant],
791 [ovs_cv_pthread_setname_np],
792 [AC_LINK_IFELSE(
a0903134 793 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac 794 ], [pthread_setname_np(pthread_self(), "name");])],
a0903134 795 [ovs_cv_pthread_setname_np=glibc],
8a8cd0ac 796 [AC_LINK_IFELSE(
a0903134 797 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac
BP		 798], [pthread_setname_np(pthread_self(), "%s", "name");])],
799 [ovs_cv_pthread_setname_np=netbsd],
a0903134 800 [ovs_cv_pthread_setname_np=none])])])
8a8cd0ac
BP		 801 case $ovs_cv_pthread_setname_np in # (
802 glibc)
a0903134
YT		 803 AC_DEFINE(
804 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
805 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
806 ;; # (
8a8cd0ac 807 netbsd)
a0903134
YT		 808 AC_DEFINE(
809 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
810 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
811 ;;
8a8cd0ac
BP		 812 esac
813 fi])
5020f5f0
BP		 814
815dnl OVS_CHECK_LINUX_HOST.
816dnl
817dnl Checks whether we're building for a Linux host, based on the presence of
818dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
819dnl LINUX based on the result.
820AC_DEFUN([OVS_CHECK_LINUX_HOST],
821 [AC_CACHE_CHECK(
822 [whether __linux__ is defined],
823 [ovs_cv_linux],
824 [AC_COMPILE_IFELSE(
825 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
826 [ovs_cv_linux=true],
827 [ovs_cv_linux=false])])
828 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])
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