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compat: Backport dev_recursion_level().
[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])
3f506f07 358 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
42d5dd95
TG		 359 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
360 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
e23775f2 361 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
d1890de5 362 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
e2f3178f 363 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats])
572e54fa
FL		 364 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_rx_handler_register])
365 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_extended])
366 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [rx_handler_func_t.*pskb],
367 [OVS_DEFINE([HAVE_RX_HANDLER_PSKB])])
e23775f2
PS		 368 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
369 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
370 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
371 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
372 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
373 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
374
375 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
376 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
cd7330d0
PS		 377 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
378 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
e2f3178f 379
057772cf
JS		 380 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
381 [tmpl_alloc.*conntrack_zone],
382 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
383
e2f3178f 384 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32])
f000c879 385 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
4aa13c0c 386
e23775f2
PS		 387 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
388 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
389 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
390 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
391 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
392
e3438006
BP		 393 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
394 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
cf6cb3a2 395 [rcu_read_lock_held])])
8fa52250 396 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
cf6cb3a2 397
6a33828d
BP		 398 # Check for the proto_data_valid member in struct sk_buff. The [^@]
399 # is necessary because some versions of this header remove the
400 # member but retain the kerneldoc comment that describes it (which
401 # starts with @). The brackets must be doubled because of m4
402 # quoting rules.
e3438006 403 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
6a33828d 404 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
ccb75a28 405 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
e23775f2
PS		 406 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
407 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_mac_header])
408 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_network_header])
d23239a2 409 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
e23775f2
PS		 410 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_scrub_packet.*xnet],
411 [OVS_DEFINE([HAVE_SKB_SCRUB_PACKET_XNET])])
60c4904f 412 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
5640cbd8
JG		 413 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
414 [OVS_DEFINE([HAVE_U16_RXHASH])])
e3438006 415 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
85444c3f 416 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
e3438006 417 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
8828e5c7 418 [skb_copy_from_linear_data_offset])
b9c15df9
PS		 419 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
420 [skb_reset_tail_pointer])
e3438006
BP		 421 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
422 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_transport_header],
4aa13c0c 423 [OVS_DEFINE([HAVE_SKBUFF_HEADER_HELPERS])])
e3438006 424 OVS_GREP_IFELSE([$KSRC/include/linux/icmpv6.h], [icmp6_hdr],
d31f1109 425 [OVS_DEFINE([HAVE_ICMP6_HDR])])
e3438006 426 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
4aa13c0c 427 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
e3438006 428 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
6c4ea27c 429 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
da4bbeb7 430 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
0aa6fda7 431 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
d923a695 432 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
dc0d542d 433 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
1edc458d 434 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
e2f3178f
PK		 435 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash])
436 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
705e9260
PS		 437 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
438 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
75e93287
FL		 439 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
440 [OVS_DEFINE([HAVE_L4_RXHASH])])
5cce04b6 441 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
97894370
TG		 442 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
443 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
4aa13c0c 444
e3438006 445 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
4aa13c0c 446 [OVS_DEFINE([HAVE_BOOL_TYPE])])
e3438006 447 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
e215ebca 448 [OVS_DEFINE([HAVE_CSUM_TYPES])])
8dbe1f9f
PS		 449 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
450 [OVS_DEFINE([HAVE_CSUM_TYPES])])
4aa13c0c 451
e3438006
BP		 452 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
453 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
4aa13c0c 454
0d03e51c
JS		 455 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
456
114fce23
SG		 457 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
458 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
14002a59 459 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
705e9260 460 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_new_unicast])
6233a1bd
TG		 461 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
462 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
c623ba49 463 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
13dd4a97
JS		 464 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
465 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
466
467 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
468 [genl_multicast_group], [id])
fdce83a3 469 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
13dd4a97 470
cc1d0dea 471 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
e23775f2 472 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
8abaa53c 473 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
e23775f2 474 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
e3438006 475 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
42d5dd95
TG		 476 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
477 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
478 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
dd693f9b 479 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
e3438006 480 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
0fcc086d 481 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
4aa13c0c 482
c4e976db
JG		 483 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
484
e3438006 485 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
431488e6 486 [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
1f649f1c 487 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
17e3889f 488 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
e23775f2 489 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
431488e6 490
09f27436
JG		 491 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
492
f285d3e7
TG		 493 OVS_GREP_IFELSE([$KSRC/include/linux/openvswitch.h], [openvswitch_handle_frame_hook],
494 [OVS_DEFINE([HAVE_RHEL_OVS_HOOK])])
3174a818
TG		 495 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
496 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
e23775f2 497 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [VXLAN_HF_RCO])
f6a0c895 498 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
13dd4a97
JS		 499 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
500 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
501 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
502 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_set_csum])
e23775f2
PS		 503 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
504 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [ipv6_v6only],
505 [OVS_DEFINE([HAVE_UDP_TUNNEL_IPV6])])
506
507 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
f6a0c895
TG		 508 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
509 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
510 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
f285d3e7 511
21a719d6
FL		 512 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
513 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
514
22bcc0e7
JG		 515 if cmp -s datapath/linux/kcompat.h.new \
516 datapath/linux/kcompat.h >/dev/null 2>&1; then
517 rm datapath/linux/kcompat.h.new
064af421 518 else
22bcc0e7 519 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
064af421
BP		 520 fi
521])
522
523dnl Checks for net/if_packet.h.
524AC_DEFUN([OVS_CHECK_IF_PACKET],
525 [AC_CHECK_HEADER([net/if_packet.h],
526 [HAVE_IF_PACKET=yes],
527 [HAVE_IF_PACKET=no])
528 AM_CONDITIONAL([HAVE_IF_PACKET], [test "$HAVE_IF_PACKET" = yes])
529 if test "$HAVE_IF_PACKET" = yes; then
530 AC_DEFINE([HAVE_IF_PACKET], [1],
531 [Define to 1 if net/if_packet.h is available.])
532 fi])
533
f6eb6b20 534dnl Checks for net/if_dl.h.
d30e714c 535dnl
d23fa2ed
YT		 536dnl (We use this as a proxy for checking whether we're building on FreeBSD
537dnl or NetBSD.)
9360d9b7
EM		 538AC_DEFUN([OVS_CHECK_IF_DL],
539 [AC_CHECK_HEADER([net/if_dl.h],
540 [HAVE_IF_DL=yes],
541 [HAVE_IF_DL=no])
542 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
543 if test "$HAVE_IF_DL" = yes; then
544 AC_DEFINE([HAVE_IF_DL], [1],
545 [Define to 1 if net/if_dl.h is available.])
d30e714c 546
d23fa2ed 547 # On these platforms we use libpcap to access network devices.
d30e714c 548 AC_SEARCH_LIBS([pcap_open_live], [pcap])
9360d9b7
EM		 549 fi])
550
e50097d2
BP		 551dnl Checks for buggy strtok_r.
552dnl
553dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
554dnl with optimization that can cause segfaults:
555dnl
556dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
557AC_DEFUN([OVS_CHECK_STRTOK_R],
558 [AC_CACHE_CHECK(
559 [whether strtok_r macro segfaults on some inputs],
560 [ovs_cv_strtok_r_bug],
561 [AC_RUN_IFELSE(
562 [AC_LANG_PROGRAM([#include <stdio.h>
563 #include <string.h>
564 ],
416e7132
BP		 565 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
566 /* Assume bug is present, because relatively minor
567 changes in compiler settings (e.g. optimization
568 level) can make it crop up. */
569 return 1;
570 #else
571 char string[] = ":::";
e50097d2
BP		 572 char *save_ptr = (char *) 0xc0ffee;
573 char *token1, *token2;
574 token1 = strtok_r(string, ":", &save_ptr);
575 token2 = strtok_r(NULL, ":", &save_ptr);
5819a7cd 576 freopen ("/dev/null", "w", stdout);
e50097d2
BP		 577 printf ("%s %s\n", token1, token2);
578 return 0;
416e7132 579 #endif
e50097d2
BP		 580 ]])],
581 [ovs_cv_strtok_r_bug=no],
582 [ovs_cv_strtok_r_bug=yes],
583 [ovs_cv_strtok_r_bug=yes])])
584 if test $ovs_cv_strtok_r_bug = yes; then
585 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
586 [Define if strtok_r macro segfaults on some inputs])
587 fi
588])
589
064af421
BP		 590dnl ----------------------------------------------------------------------
591dnl These macros are from GNU PSPP, with the following original license:
592dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
593dnl This file is free software; the Free Software Foundation
594dnl gives unlimited permission to copy and/or distribute it,
595dnl with or without modifications, as long as this notice is preserved.
596
50194820 597AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
7c96151e 598 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-=], [__])])dnl
064af421
BP		 599 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
600 [ovs_save_CFLAGS="$CFLAGS"
50194820
BP		 601 dnl Include -Werror in the compiler options, because without -Werror
602 dnl clang's GCC-compatible compiler driver does not return a failure
603 dnl exit status even though it complains about options it does not
604 dnl understand.
c2deac54
YT		 605 dnl
606 dnl Also, check stderr as gcc exits with status 0 for options
607 dnl rejected at getopt level.
608 dnl % touch /tmp/a.c
609 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
610 dnl gcc: unrecognized option '-Qunused-arguments'
611 dnl 0
612 dnl %
50194820 613 CFLAGS="$CFLAGS $WERROR $1"
c2deac54 614 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [if test -s conftest.err && grep "unrecognized option" conftest.err; then ovs_cv_name[]=no; else ovs_cv_name[]=yes; fi], [ovs_cv_name[]=no])
064af421
BP		 615 CFLAGS="$ovs_save_CFLAGS"])
616 if test $ovs_cv_name = yes; then
83f6c050 617 m4_if([$2], [], [:], [$2])
064af421
BP		 618 else
619 m4_if([$3], [], [:], [$3])
620 fi
621])
622
50194820
BP		 623dnl OVS_CHECK_WERROR
624dnl
625dnl Check whether the C compiler accepts -Werror.
626dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
627AC_DEFUN([OVS_CHECK_WERROR],
628 [WERROR=
629 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
630
631dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
632dnl Check whether the given C compiler OPTION is accepted.
633dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
634AC_DEFUN([OVS_CHECK_CC_OPTION],
635 [AC_REQUIRE([OVS_CHECK_WERROR])
636 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
637
064af421
BP		 638dnl OVS_ENABLE_OPTION([OPTION])
639dnl Check whether the given C compiler OPTION is accepted.
d161c099 640dnl If so, add it to WARNING_FLAGS.
064af421
BP		 641dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
642AC_DEFUN([OVS_ENABLE_OPTION],
d161c099
BP		 643 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
644 AC_SUBST([WARNING_FLAGS])])
c72e245a
BP		 645
646dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
647dnl Check whether the given C compiler OPTION is accepted.
648dnl If so, enable the given Automake CONDITIONAL.
649
650dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
651AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
652 [OVS_CHECK_CC_OPTION(
653 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
654 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
064af421 655dnl ----------------------------------------------------------------------
ed2d4f6a
BP		 656
657dnl Check for too-old XenServer.
658AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
659 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
660 [if test -e /etc/redhat-release; then
661 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
662 fi
663 if test -z "$ovs_cv_xsversion"; then
664 ovs_cv_xsversion=none
665 fi])
666 case $ovs_cv_xsversion in
667 none)
668 ;;
669
670 [[1-9]][[0-9]]* | dnl XenServer 10 or later
671 [[6-9]]* | dnl XenServer 6 or later
672 5.[[7-9]]* | dnl XenServer 5.7 or later
673 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
674 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
675 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
676 ;;
677
678 *)
679 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.)])
680 ;;
681 esac])
29d935d6
BP		 682
683dnl OVS_MAKE_HAS_IF([if-true], [if-false])
684dnl
685dnl Checks whether make has the GNU make $(if condition,then,else) extension.
686dnl Runs 'if-true' if so, 'if-false' otherwise.
372d58a4 687AC_DEFUN([OVS_CHECK_MAKE_IF],
29d935d6
BP		 688 [AC_CACHE_CHECK(
689 [whether ${MAKE-make} has GNU make \$(if) extension],
690 [ovs_cv_gnu_make_if],
691 [cat <<'EOF' > conftest.mk
692conftest.out:
380f86e4 693 echo $(if x,y,z) > conftest.out
29d935d6
BP		 694.PHONY: all
695EOF
696 rm -f conftest.out
697 AS_ECHO(["$as_me:$LINENO: invoking ${MAKE-make} -f conftest.mk all:"]) >&AS_MESSAGE_LOG_FD 2>&1
698 ${MAKE-make} -f conftest.mk conftest.out >&AS_MESSAGE_LOG_FD 2>&1
699 AS_ECHO(["$as_me:$LINENO: conftest.out contains:"]) >&AS_MESSAGE_LOG_FD 2>&1
700 cat conftest.out >&AS_MESSAGE_LOG_FD 2>&1
701 result=`cat conftest.out`
702 rm -f conftest.mk conftest.out
703 if test "X$result" = "Xy"; then
704 ovs_cv_gnu_make_if=yes
705 else
706 ovs_cv_gnu_make_if=no
372d58a4 707 fi])])
29d935d6 708
b4e1bf8b
BP		 709dnl OVS_CHECK_GNU_MAKE
710dnl
711dnl Checks whether make is GNU make (because Linux kernel Makefiles
712dnl only work with GNU make).
713AC_DEFUN([OVS_CHECK_GNU_MAKE],
714 [AC_CACHE_CHECK(
715 [whether ${MAKE-make} is GNU make],
716 [ovs_cv_gnu_make],
717 [rm -f conftest.out
718 AS_ECHO(["$as_me:$LINENO: invoking ${MAKE-make} --version:"]) >&AS_MESSAGE_LOG_FD 2>&1
719 ${MAKE-make} --version >conftest.out 2>&1
720 cat conftest.out >&AS_MESSAGE_LOG_FD 2>&1
721 result=`cat conftest.out`
722 rm -f conftest.mk conftest.out
723
724 case $result in # (
725 GNU*) ovs_cv_gnu_make=yes ;; # (
726 *) ovs_cv_gnu_make=no ;;
727 esac])
728 AM_CONDITIONAL([GNU_MAKE], [test $ovs_cv_gnu_make = yes])])
729
643c0c34
BP		 730dnl OVS_CHECK_SPARSE_TARGET
731dnl
732dnl The "cgcc" script from "sparse" isn't very good at detecting the
733dnl target for which the code is being built. This helps it out.
734AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
735 [AC_CACHE_CHECK(
736 [target hint for cgcc],
737 [ac_cv_sparse_target],
738 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
739 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
740 [x86_64-*], [ac_cv_sparse_target=x86_64],
741 [ac_cv_sparse_target=other])])
742 AS_CASE([$ac_cv_sparse_target],
743 [x86], [SPARSEFLAGS= CGCCFLAGS=-target=i86],
744 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS=-target=x86_64],
745 [SPARSEFLAGS= CGCCFLAGS=])
746 AC_SUBST([SPARSEFLAGS])
747 AC_SUBST([CGCCFLAGS])])
748
32e96ab7
AZ		 749dnl OVS_SPARSE_EXTRA_INCLUDES
750dnl
751dnl The cgcc script from "sparse" does not search gcc's default
752dnl search path. Get the default search path from GCC and pass
753dnl them to sparse.
754AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
755 AC_SUBST([SPARSE_EXTRA_INCLUDES],
756 [`$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 ' ' `] ))
757
29d935d6
BP		 758dnl OVS_ENABLE_SPARSE
759AC_DEFUN([OVS_ENABLE_SPARSE],
643c0c34 760 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
372d58a4 761 AC_REQUIRE([OVS_CHECK_MAKE_IF])
32e96ab7 762 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
372d58a4
BP		 763 : ${SPARSE=sparse}
764 AC_SUBST([SPARSE])
765 AC_CONFIG_COMMANDS_PRE(
766 [if test $ovs_cv_gnu_make_if = yes; then
38b7a52b 767 CC='$(if $(C),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'
372d58a4 768 fi])])
8a8cd0ac
BP		 769
770dnl OVS_PTHREAD_SET_NAME
771dnl
772dnl This checks for three known variants of pthreads functions for setting
773dnl the name of the current thread:
774dnl
775dnl glibc: int pthread_setname_np(pthread_t, const char *name);
776dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
777dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
778dnl
779dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
780dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
781dnl provide to it.
782dnl
783dnl This macro defines:
784dnl
785dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
786dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
787dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
788AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
789 [AC_CHECK_FUNCS([pthread_set_name_np])
790 if test $ac_cv_func_pthread_set_name_np != yes; then
791 AC_CACHE_CHECK(
792 [for pthread_setname_np() variant],
793 [ovs_cv_pthread_setname_np],
794 [AC_LINK_IFELSE(
a0903134 795 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac 796 ], [pthread_setname_np(pthread_self(), "name");])],
a0903134 797 [ovs_cv_pthread_setname_np=glibc],
8a8cd0ac 798 [AC_LINK_IFELSE(
a0903134 799 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac
BP		 800], [pthread_setname_np(pthread_self(), "%s", "name");])],
801 [ovs_cv_pthread_setname_np=netbsd],
a0903134 802 [ovs_cv_pthread_setname_np=none])])])
8a8cd0ac
BP		 803 case $ovs_cv_pthread_setname_np in # (
804 glibc)
a0903134
YT		 805 AC_DEFINE(
806 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
807 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
808 ;; # (
8a8cd0ac 809 netbsd)
a0903134
YT		 810 AC_DEFINE(
811 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
812 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
813 ;;
8a8cd0ac
BP		 814 esac
815 fi])
5020f5f0
BP		 816
817dnl OVS_CHECK_LINUX_HOST.
818dnl
819dnl Checks whether we're building for a Linux host, based on the presence of
820dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
821dnl LINUX based on the result.
822AC_DEFUN([OVS_CHECK_LINUX_HOST],
823 [AC_CACHE_CHECK(
824 [whether __linux__ is defined],
825 [ovs_cv_linux],
826 [AC_COMPILE_IFELSE(
827 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
828 [ovs_cv_linux=true],
829 [ovs_cv_linux=false])])
830 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])
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