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tests: Check that ofproto/trace accepts dpctl output.
[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
JS		 136 if test "$version" -ge 4; then
137 if test "$version" = 4 && test "$patchlevel" -le 0; then
138 : # Linux 4.x
d76aabea 139 else
3afcde43 140 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 4.0.x is not supported (please refer to the FAQ for advice)])
d76aabea 141 fi
3afcde43
JS		 142 elif test "$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
3c94676c
DDP		 175 DPDK_LIB="-lintel_dpdk"
176 DPDK_EXTRA_LIB="-lfuse"
8a9562d2 177
95626395
TG		 178 ovs_save_CFLAGS="$CFLAGS"
179 ovs_save_LDFLAGS="$LDFLAGS"
c1223b11
DDP		 180 LDFLAGS="$LDFLAGS -L$DPDK_LIB_DIR"
181 CFLAGS="$CFLAGS -I$DPDK_INCLUDE"
182
183 # On some systems we have to add -ldl to link with dpdk
184 #
185 # This code, at first, tries to link without -ldl (""),
186 # then adds it and tries again.
187 # Before each attempt the search cache must be unset,
188 # otherwise autoconf will stick with the old result
189
190 found=false
191 save_LIBS=$LIBS
192 for extras in "" "-ldl"; do
3c94676c 193 LIBS="$DPDK_LIB $extras $save_LIBS $DPDK_EXTRA_LIB"
c1223b11
DDP		 194 AC_LINK_IFELSE(
195 [AC_LANG_PROGRAM([#include <rte_config.h>
196 #include <rte_eal.h>],
197 [int rte_argc; char ** rte_argv;
198 rte_eal_init(rte_argc, rte_argv);])],
199 [found=true])
200 if $found; then
201 break
202 fi
203 done
204 if $found; then :; else
205 AC_MSG_ERROR([cannot link with dpdk])
206 fi
95626395
TG		 207 CFLAGS="$ovs_save_CFLAGS"
208 LDFLAGS="$ovs_save_LDFLAGS"
209 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
543342a4 210 OVS_CFLAGS="$OVS_CFLAGS -I$DPDK_INCLUDE -mssse3"
8a9562d2 211
3c94676c 212 # DPDK pmd drivers are not linked unless --whole-archive is used.
d7310583
DDP		 213 #
214 # This happens because the rest of the DPDK code doesn't use any symbol in
215 # the pmd driver objects, and the drivers register themselves using an
216 # __attribute__((constructor)) function.
217 #
218 # These options are specified inside a single -Wl directive to prevent
219 # autotools from reordering them.
3c94676c 220 DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
9475dfeb 221 AC_SUBST([DPDK_vswitchd_LDFLAGS])
8a9562d2
PS		 222 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
223 else
224 RTE_SDK=
225 fi
226
227 AM_CONDITIONAL([DPDK_NETDEV], test -n "$RTE_SDK")
228])
229
8828e5c7 230dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
064af421
BP		 231dnl
232dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
8828e5c7
BP		 233dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
234dnl <REGEX> translated to uppercase.
064af421
BP		 235AC_DEFUN([OVS_GREP_IFELSE], [
236 AC_MSG_CHECKING([whether $2 matches in $1])
7507ec48
JG		 237 if test -f $1; then
238 grep '$2' $1 >/dev/null 2>&1
239 status=$?
240 case $status in
241 0)
242 AC_MSG_RESULT([yes])
8828e5c7 243 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
7507ec48
JG		 244 ;;
245 1)
246 AC_MSG_RESULT([no])
247 $4
248 ;;
249 *)
250 AC_MSG_ERROR([grep exited with status $status])
251 ;;
252 esac
253 else
254 AC_MSG_RESULT([file not found])
255 $4
256 fi
064af421
BP		 257])
258
13dd4a97
JS		 259dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
260dnl
261dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
262dnl structure definition. If this is successful, runs IF-MATCH, otherwise
263dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
264dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
265dnl translated to uppercase.
266AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
267 AC_MSG_CHECKING([whether $2 has member $3 in $1])
268 if test -f $1; then
269 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3'
270 status=$?
271 case $status in
272 0)
273 AC_MSG_RESULT([yes])
274 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
275 ;;
276 1)
277 AC_MSG_RESULT([no])
278 $5
279 ;;
280 *)
281 AC_MSG_ERROR([grep exited with status $status])
282 ;;
283 esac
284 else
285 AC_MSG_RESULT([file not found])
286 $5
287 fi
288])
289
064af421
BP		 290dnl OVS_DEFINE(NAME)
291dnl
292dnl Defines NAME to 1 in kcompat.h.
293AC_DEFUN([OVS_DEFINE], [
22bcc0e7 294 echo '#define $1 1' >> datapath/linux/kcompat.h.new
064af421
BP		 295])
296
e3438006 297dnl OVS_CHECK_LINUX_COMPAT
064af421
BP		 298dnl
299dnl Runs various Autoconf checks on the Linux 2.6 kernel source in
e3438006
BP		 300dnl the directory in $KBUILD.
301AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
22bcc0e7
JG		 302 rm -f datapath/linux/kcompat.h.new
303 mkdir -p datapath/linux
304 : > datapath/linux/kcompat.h.new
4aa13c0c 305
e3438006 306 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
25fb3596
JG		 307 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
308
e3438006 309 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
4303ec34 310 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
4aa13c0c 311
d923a695 312 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
e2f3178f 313 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
d923a695
JG		 314
315 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
316
e3438006 317 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
2ea82414
PS		 318 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
319 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
13dd4a97
JS		 320 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
321 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
4aa13c0c 322
e3438006
BP		 323 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
324 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
325 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
42d5dd95
TG		 326 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
327 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
d1890de5 328 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
e2f3178f 329 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats])
cd7330d0
PS		 330 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
331 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
e2f3178f
PK		 332
333 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32])
4aa13c0c 334
e3438006
BP		 335 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
336 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
cf6cb3a2 337 [rcu_read_lock_held])])
8fa52250 338 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
cf6cb3a2 339
6a33828d
BP		 340 # Check for the proto_data_valid member in struct sk_buff. The [^@]
341 # is necessary because some versions of this header remove the
342 # member but retain the kerneldoc comment that describes it (which
343 # starts with @). The brackets must be doubled because of m4
344 # quoting rules.
e3438006 345 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
6a33828d 346 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
d23239a2 347 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
60c4904f 348 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
5640cbd8
JG		 349 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
350 [OVS_DEFINE([HAVE_U16_RXHASH])])
e3438006 351 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
85444c3f 352 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
e3438006 353 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
8828e5c7 354 [skb_copy_from_linear_data_offset])
b9c15df9
PS		 355 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
356 [skb_reset_tail_pointer])
e3438006
BP		 357 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
358 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_transport_header],
4aa13c0c 359 [OVS_DEFINE([HAVE_SKBUFF_HEADER_HELPERS])])
e3438006 360 OVS_GREP_IFELSE([$KSRC/include/linux/icmpv6.h], [icmp6_hdr],
d31f1109 361 [OVS_DEFINE([HAVE_ICMP6_HDR])])
e3438006 362 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
4aa13c0c 363 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
e3438006 364 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
6c4ea27c 365 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
da4bbeb7 366 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
0aa6fda7 367 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
d923a695 368 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
dc0d542d 369 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
1edc458d 370 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
e2f3178f
PK		 371 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash])
372 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
705e9260
PS		 373 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
374 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
9bbf88b2 375 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [l4_rxhash])
5cce04b6 376 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
97894370
TG		 377 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
378 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
4aa13c0c 379
e3438006 380 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
4aa13c0c 381 [OVS_DEFINE([HAVE_BOOL_TYPE])])
e3438006 382 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
e215ebca 383 [OVS_DEFINE([HAVE_CSUM_TYPES])])
8dbe1f9f
PS		 384 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
385 [OVS_DEFINE([HAVE_CSUM_TYPES])])
4aa13c0c 386
e3438006
BP		 387 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
388 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
4aa13c0c 389
114fce23
SG		 390 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
391 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
14002a59 392 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
705e9260 393 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_new_unicast])
6233a1bd
TG		 394 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
395 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
c623ba49 396 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
13dd4a97
JS		 397 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
398 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
399
400 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
401 [genl_multicast_group], [id])
402
cc1d0dea 403 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
8abaa53c 404 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
e3438006 405 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
42d5dd95
TG		 406 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
407 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
408 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
e3438006 409 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
0fcc086d 410 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
4aa13c0c 411
c4e976db
JG		 412 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
413
e3438006 414 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
431488e6 415 [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
1f649f1c 416 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
17e3889f
TG		 417 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
418
431488e6 419
09f27436
JG		 420 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
421
f285d3e7
TG		 422 OVS_GREP_IFELSE([$KSRC/include/linux/openvswitch.h], [openvswitch_handle_frame_hook],
423 [OVS_DEFINE([HAVE_RHEL_OVS_HOOK])])
3174a818
TG		 424 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
425 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
f6a0c895 426 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
13dd4a97
JS		 427 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
428 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
429 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
430 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_set_csum])
f6a0c895
TG		 431 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df:1],
432 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
13dd4a97
JS		 433 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [SKB_GSO_GRE_CSUM],
434 [OVS_DEFINE([HAVE_SKB_GSO_GRE_CSUM])])
435 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [SKB_GSO_UDP_TUNNEL_CSUM],
436 [OVS_DEFINE([HAVE_SKB_GSO_UDP_TUNNEL_CSUM])])
f6a0c895
TG		 437 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
438 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
f285d3e7 439
22bcc0e7
JG		 440 if cmp -s datapath/linux/kcompat.h.new \
441 datapath/linux/kcompat.h >/dev/null 2>&1; then
442 rm datapath/linux/kcompat.h.new
064af421 443 else
22bcc0e7 444 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
064af421
BP		 445 fi
446])
447
448dnl Checks for net/if_packet.h.
449AC_DEFUN([OVS_CHECK_IF_PACKET],
450 [AC_CHECK_HEADER([net/if_packet.h],
451 [HAVE_IF_PACKET=yes],
452 [HAVE_IF_PACKET=no])
453 AM_CONDITIONAL([HAVE_IF_PACKET], [test "$HAVE_IF_PACKET" = yes])
454 if test "$HAVE_IF_PACKET" = yes; then
455 AC_DEFINE([HAVE_IF_PACKET], [1],
456 [Define to 1 if net/if_packet.h is available.])
457 fi])
458
f6eb6b20 459dnl Checks for net/if_dl.h.
d30e714c 460dnl
d23fa2ed
YT		 461dnl (We use this as a proxy for checking whether we're building on FreeBSD
462dnl or NetBSD.)
9360d9b7
EM		 463AC_DEFUN([OVS_CHECK_IF_DL],
464 [AC_CHECK_HEADER([net/if_dl.h],
465 [HAVE_IF_DL=yes],
466 [HAVE_IF_DL=no])
467 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
468 if test "$HAVE_IF_DL" = yes; then
469 AC_DEFINE([HAVE_IF_DL], [1],
470 [Define to 1 if net/if_dl.h is available.])
d30e714c 471
d23fa2ed 472 # On these platforms we use libpcap to access network devices.
d30e714c 473 AC_SEARCH_LIBS([pcap_open_live], [pcap])
9360d9b7
EM		 474 fi])
475
e50097d2
BP		 476dnl Checks for buggy strtok_r.
477dnl
478dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
479dnl with optimization that can cause segfaults:
480dnl
481dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
482AC_DEFUN([OVS_CHECK_STRTOK_R],
483 [AC_CACHE_CHECK(
484 [whether strtok_r macro segfaults on some inputs],
485 [ovs_cv_strtok_r_bug],
486 [AC_RUN_IFELSE(
487 [AC_LANG_PROGRAM([#include <stdio.h>
488 #include <string.h>
489 ],
416e7132
BP		 490 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
491 /* Assume bug is present, because relatively minor
492 changes in compiler settings (e.g. optimization
493 level) can make it crop up. */
494 return 1;
495 #else
496 char string[] = ":::";
e50097d2
BP		 497 char *save_ptr = (char *) 0xc0ffee;
498 char *token1, *token2;
499 token1 = strtok_r(string, ":", &save_ptr);
500 token2 = strtok_r(NULL, ":", &save_ptr);
5819a7cd 501 freopen ("/dev/null", "w", stdout);
e50097d2
BP		 502 printf ("%s %s\n", token1, token2);
503 return 0;
416e7132 504 #endif
e50097d2
BP		 505 ]])],
506 [ovs_cv_strtok_r_bug=no],
507 [ovs_cv_strtok_r_bug=yes],
508 [ovs_cv_strtok_r_bug=yes])])
509 if test $ovs_cv_strtok_r_bug = yes; then
510 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
511 [Define if strtok_r macro segfaults on some inputs])
512 fi
513])
514
064af421
BP		 515dnl ----------------------------------------------------------------------
516dnl These macros are from GNU PSPP, with the following original license:
517dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
518dnl This file is free software; the Free Software Foundation
519dnl gives unlimited permission to copy and/or distribute it,
520dnl with or without modifications, as long as this notice is preserved.
521
50194820 522AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
7c96151e 523 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-=], [__])])dnl
064af421
BP		 524 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
525 [ovs_save_CFLAGS="$CFLAGS"
50194820
BP		 526 dnl Include -Werror in the compiler options, because without -Werror
527 dnl clang's GCC-compatible compiler driver does not return a failure
528 dnl exit status even though it complains about options it does not
529 dnl understand.
c2deac54
YT		 530 dnl
531 dnl Also, check stderr as gcc exits with status 0 for options
532 dnl rejected at getopt level.
533 dnl % touch /tmp/a.c
534 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
535 dnl gcc: unrecognized option '-Qunused-arguments'
536 dnl 0
537 dnl %
50194820 538 CFLAGS="$CFLAGS $WERROR $1"
c2deac54 539 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [if test -s conftest.err && grep "unrecognized option" conftest.err; then ovs_cv_name[]=no; else ovs_cv_name[]=yes; fi], [ovs_cv_name[]=no])
064af421
BP		 540 CFLAGS="$ovs_save_CFLAGS"])
541 if test $ovs_cv_name = yes; then
83f6c050 542 m4_if([$2], [], [:], [$2])
064af421
BP		 543 else
544 m4_if([$3], [], [:], [$3])
545 fi
546])
547
50194820
BP		 548dnl OVS_CHECK_WERROR
549dnl
550dnl Check whether the C compiler accepts -Werror.
551dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
552AC_DEFUN([OVS_CHECK_WERROR],
553 [WERROR=
554 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
555
556dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
557dnl Check whether the given C compiler OPTION is accepted.
558dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
559AC_DEFUN([OVS_CHECK_CC_OPTION],
560 [AC_REQUIRE([OVS_CHECK_WERROR])
561 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
562
064af421
BP		 563dnl OVS_ENABLE_OPTION([OPTION])
564dnl Check whether the given C compiler OPTION is accepted.
d161c099 565dnl If so, add it to WARNING_FLAGS.
064af421
BP		 566dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
567AC_DEFUN([OVS_ENABLE_OPTION],
d161c099
BP		 568 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
569 AC_SUBST([WARNING_FLAGS])])
c72e245a
BP		 570
571dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
572dnl Check whether the given C compiler OPTION is accepted.
573dnl If so, enable the given Automake CONDITIONAL.
574
575dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
576AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
577 [OVS_CHECK_CC_OPTION(
578 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
579 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
064af421 580dnl ----------------------------------------------------------------------
ed2d4f6a
BP		 581
582dnl Check for too-old XenServer.
583AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
584 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
585 [if test -e /etc/redhat-release; then
586 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
587 fi
588 if test -z "$ovs_cv_xsversion"; then
589 ovs_cv_xsversion=none
590 fi])
591 case $ovs_cv_xsversion in
592 none)
593 ;;
594
595 [[1-9]][[0-9]]* | dnl XenServer 10 or later
596 [[6-9]]* | dnl XenServer 6 or later
597 5.[[7-9]]* | dnl XenServer 5.7 or later
598 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
599 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
600 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
601 ;;
602
603 *)
604 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.)])
605 ;;
606 esac])
29d935d6
BP		 607
608dnl OVS_MAKE_HAS_IF([if-true], [if-false])
609dnl
610dnl Checks whether make has the GNU make $(if condition,then,else) extension.
611dnl Runs 'if-true' if so, 'if-false' otherwise.
372d58a4 612AC_DEFUN([OVS_CHECK_MAKE_IF],
29d935d6
BP		 613 [AC_CACHE_CHECK(
614 [whether ${MAKE-make} has GNU make \$(if) extension],
615 [ovs_cv_gnu_make_if],
616 [cat <<'EOF' > conftest.mk
617conftest.out:
380f86e4 618 echo $(if x,y,z) > conftest.out
29d935d6
BP		 619.PHONY: all
620EOF
621 rm -f conftest.out
622 AS_ECHO(["$as_me:$LINENO: invoking ${MAKE-make} -f conftest.mk all:"]) >&AS_MESSAGE_LOG_FD 2>&1
623 ${MAKE-make} -f conftest.mk conftest.out >&AS_MESSAGE_LOG_FD 2>&1
624 AS_ECHO(["$as_me:$LINENO: conftest.out contains:"]) >&AS_MESSAGE_LOG_FD 2>&1
625 cat conftest.out >&AS_MESSAGE_LOG_FD 2>&1
626 result=`cat conftest.out`
627 rm -f conftest.mk conftest.out
628 if test "X$result" = "Xy"; then
629 ovs_cv_gnu_make_if=yes
630 else
631 ovs_cv_gnu_make_if=no
372d58a4 632 fi])])
29d935d6 633
b4e1bf8b
BP		 634dnl OVS_CHECK_GNU_MAKE
635dnl
636dnl Checks whether make is GNU make (because Linux kernel Makefiles
637dnl only work with GNU make).
638AC_DEFUN([OVS_CHECK_GNU_MAKE],
639 [AC_CACHE_CHECK(
640 [whether ${MAKE-make} is GNU make],
641 [ovs_cv_gnu_make],
642 [rm -f conftest.out
643 AS_ECHO(["$as_me:$LINENO: invoking ${MAKE-make} --version:"]) >&AS_MESSAGE_LOG_FD 2>&1
644 ${MAKE-make} --version >conftest.out 2>&1
645 cat conftest.out >&AS_MESSAGE_LOG_FD 2>&1
646 result=`cat conftest.out`
647 rm -f conftest.mk conftest.out
648
649 case $result in # (
650 GNU*) ovs_cv_gnu_make=yes ;; # (
651 *) ovs_cv_gnu_make=no ;;
652 esac])
653 AM_CONDITIONAL([GNU_MAKE], [test $ovs_cv_gnu_make = yes])])
654
643c0c34
BP		 655dnl OVS_CHECK_SPARSE_TARGET
656dnl
657dnl The "cgcc" script from "sparse" isn't very good at detecting the
658dnl target for which the code is being built. This helps it out.
659AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
660 [AC_CACHE_CHECK(
661 [target hint for cgcc],
662 [ac_cv_sparse_target],
663 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
664 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
665 [x86_64-*], [ac_cv_sparse_target=x86_64],
666 [ac_cv_sparse_target=other])])
667 AS_CASE([$ac_cv_sparse_target],
668 [x86], [SPARSEFLAGS= CGCCFLAGS=-target=i86],
669 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS=-target=x86_64],
670 [SPARSEFLAGS= CGCCFLAGS=])
671 AC_SUBST([SPARSEFLAGS])
672 AC_SUBST([CGCCFLAGS])])
673
32e96ab7
AZ		 674dnl OVS_SPARSE_EXTRA_INCLUDES
675dnl
676dnl The cgcc script from "sparse" does not search gcc's default
677dnl search path. Get the default search path from GCC and pass
678dnl them to sparse.
679AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
680 AC_SUBST([SPARSE_EXTRA_INCLUDES],
681 [`$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 ' ' `] ))
682
29d935d6
BP		 683dnl OVS_ENABLE_SPARSE
684AC_DEFUN([OVS_ENABLE_SPARSE],
643c0c34 685 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
372d58a4 686 AC_REQUIRE([OVS_CHECK_MAKE_IF])
32e96ab7 687 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
372d58a4
BP		 688 : ${SPARSE=sparse}
689 AC_SUBST([SPARSE])
690 AC_CONFIG_COMMANDS_PRE(
691 [if test $ovs_cv_gnu_make_if = yes; then
38b7a52b 692 CC='$(if $(C),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'
372d58a4 693 fi])])
8a8cd0ac
BP		 694
695dnl OVS_PTHREAD_SET_NAME
696dnl
697dnl This checks for three known variants of pthreads functions for setting
698dnl the name of the current thread:
699dnl
700dnl glibc: int pthread_setname_np(pthread_t, const char *name);
701dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
702dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
703dnl
704dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
705dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
706dnl provide to it.
707dnl
708dnl This macro defines:
709dnl
710dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
711dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
712dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
713AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
714 [AC_CHECK_FUNCS([pthread_set_name_np])
715 if test $ac_cv_func_pthread_set_name_np != yes; then
716 AC_CACHE_CHECK(
717 [for pthread_setname_np() variant],
718 [ovs_cv_pthread_setname_np],
719 [AC_LINK_IFELSE(
a0903134 720 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac 721 ], [pthread_setname_np(pthread_self(), "name");])],
a0903134 722 [ovs_cv_pthread_setname_np=glibc],
8a8cd0ac 723 [AC_LINK_IFELSE(
a0903134 724 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac
BP		 725], [pthread_setname_np(pthread_self(), "%s", "name");])],
726 [ovs_cv_pthread_setname_np=netbsd],
a0903134 727 [ovs_cv_pthread_setname_np=none])])])
8a8cd0ac
BP		 728 case $ovs_cv_pthread_setname_np in # (
729 glibc)
a0903134
YT		 730 AC_DEFINE(
731 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
732 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
733 ;; # (
8a8cd0ac 734 netbsd)
a0903134
YT		 735 AC_DEFINE(
736 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
737 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
738 ;;
8a8cd0ac
BP		 739 esac
740 fi])
5020f5f0
BP		 741
742dnl OVS_CHECK_LINUX_HOST.
743dnl
744dnl Checks whether we're building for a Linux host, based on the presence of
745dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
746dnl LINUX based on the result.
747AC_DEFUN([OVS_CHECK_LINUX_HOST],
748 [AC_CACHE_CHECK(
749 [whether __linux__ is defined],
750 [ovs_cv_linux],
751 [AC_COMPILE_IFELSE(
752 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
753 [ovs_cv_linux=true],
754 [ovs_cv_linux=false])])
755 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])
openvswitch packages for PVE