]> git.proxmox.com Git - mirror_ovs.git/blame - acinclude.m4
projects / mirror_ovs.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
compat: Add a struct net parameter to l4_pkt_to_tuple.
[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 $kversion, but version newer than 4.3.x is not supported (please refer to the FAQ for advice)])
d76aabea 141 fi
8063e095 142 elif test "$version" = 3 && test "$patchlevel" -ge 10; then
3afcde43 143 : # Linux 3.x
71fe9970 144 else
8063e095 145 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 3.10 or later is required])
064af421 146 fi
2520f452
IY		 147 if (test ! -e "$KBUILD"/include/linux/version.h && \
148 test ! -e "$KBUILD"/include/generated/uapi/linux/version.h)|| \
e3438006
BP		 149 (test ! -e "$KBUILD"/include/linux/autoconf.h && \
150 test ! -e "$KBUILD"/include/generated/autoconf.h); then
a0903134 151 AC_MSG_ERROR([Linux kernel source in $KBUILD is not configured])
064af421 152 fi
e3438006 153 OVS_CHECK_LINUX_COMPAT
064af421 154 fi
e3438006 155 AM_CONDITIONAL(LINUX_ENABLED, test -n "$KBUILD")
064af421
BP		 156])
157
8a9562d2
PS		 158dnl OVS_CHECK_DPDK
159dnl
160dnl Configure DPDK source tree
161AC_DEFUN([OVS_CHECK_DPDK], [
162 AC_ARG_WITH([dpdk],
163 [AC_HELP_STRING([--with-dpdk=/path/to/dpdk],
e2e54517 164 [Specify the DPDK build directory])])
8a9562d2 165
40b5ea86
BB		 166 AC_MSG_CHECKING([whether dpdk datapath is enabled])
167 if test -z "$with_dpdk" || test "$with_dpdk" = no; then
168 AC_MSG_RESULT([no])
169 DPDKLIB_FOUND=false
170 else
171 AC_MSG_RESULT([yes])
172 case "$with_dpdk" in
173 yes)
174 DPDK_AUTO_DISCOVER="true"
175 DPDK_INCLUDE="/usr/local/include/dpdk -I/usr/include/dpdk"
176 ;;
177 *)
178 DPDK_AUTO_DISCOVER="false"
179 DPDK_INCLUDE="$with_dpdk/include"
180 # If 'with_dpdk' is passed install directory, point to headers
181 # installed in $DESTDIR/$prefix/include/dpdk
182 AC_CHECK_FILE([$DPDK_INCLUDE/rte_config.h], [],
183 [AC_CHECK_FILE([$DPDK_INCLUDE/dpdk/rte_config.h],
184 [DPDK_INCLUDE=$DPDK_INCLUDE/dpdk], [])])
185 DPDK_LIB_DIR="$with_dpdk/lib"
186 ;;
187 esac
8a9562d2 188
18f777b2 189 DPDK_LIB="-ldpdk"
10d01ad2 190 DPDK_EXTRA_LIB=""
8a9562d2 191
95626395
TG		 192 ovs_save_CFLAGS="$CFLAGS"
193 ovs_save_LDFLAGS="$LDFLAGS"
c1223b11 194 CFLAGS="$CFLAGS -I$DPDK_INCLUDE"
40b5ea86
BB		 195 if test "$DPDK_AUTO_DISCOVER" = "false"; then
196 LDFLAGS="$LDFLAGS -L${DPDK_LIB_DIR}"
197 fi
198
199 AC_COMPILE_IFELSE([
200 AC_LANG_PROGRAM(
201 [
202 #include <rte_config.h>
203#if !RTE_LIBRTE_VHOST_USER
204#error
205#endif
206 ], [])
207 ], [],
208 [AC_DEFINE([VHOST_CUSE], [1], [DPDK vhost-cuse support enabled, vhost-user disabled.])
209 DPDK_EXTRA_LIB="-lfuse"])
c1223b11
DDP		 210
211 # On some systems we have to add -ldl to link with dpdk
212 #
213 # This code, at first, tries to link without -ldl (""),
214 # then adds it and tries again.
215 # Before each attempt the search cache must be unset,
216 # otherwise autoconf will stick with the old result
217
40b5ea86 218 DPDKLIB_FOUND=false
c1223b11
DDP		 219 save_LIBS=$LIBS
220 for extras in "" "-ldl"; do
3c94676c 221 LIBS="$DPDK_LIB $extras $save_LIBS $DPDK_EXTRA_LIB"
c1223b11
DDP		 222 AC_LINK_IFELSE(
223 [AC_LANG_PROGRAM([#include <rte_config.h>
224 #include <rte_eal.h>],
225 [int rte_argc; char ** rte_argv;
226 rte_eal_init(rte_argc, rte_argv);])],
40b5ea86
BB		 227 [DPDKLIB_FOUND=true])
228 if $DPDKLIB_FOUND; then
c1223b11
DDP		 229 break
230 fi
231 done
40b5ea86
BB		 232
233 # If linking unsuccessful
234 if test "$DPDKLIB_FOUND" = "false" ; then
235 if $DPDK_AUTO_DISCOVER; then
236 AC_MSG_ERROR([Could not find DPDK library in default search path, Use --with-dpdk to specify the DPDK library installed in non-standard location])
237 else
238 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
239 fi
c1223b11 240 fi
95626395
TG		 241 CFLAGS="$ovs_save_CFLAGS"
242 LDFLAGS="$ovs_save_LDFLAGS"
40b5ea86
BB		 243 if test "$DPDK_AUTO_DISCOVER" = "false"; then
244 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
245 fi
ab2a3154
IM		 246 OVS_CFLAGS="$OVS_CFLAGS -I$DPDK_INCLUDE"
247 OVS_ENABLE_OPTION([-mssse3])
8a9562d2 248
3c94676c 249 # DPDK pmd drivers are not linked unless --whole-archive is used.
d7310583
DDP		 250 #
251 # This happens because the rest of the DPDK code doesn't use any symbol in
252 # the pmd driver objects, and the drivers register themselves using an
253 # __attribute__((constructor)) function.
254 #
255 # These options are specified inside a single -Wl directive to prevent
256 # autotools from reordering them.
3c94676c 257 DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
9475dfeb 258 AC_SUBST([DPDK_vswitchd_LDFLAGS])
8a9562d2 259 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
8a9562d2
PS		 260 fi
261
40b5ea86 262 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
8a9562d2
PS		 263])
264
8828e5c7 265dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
064af421
BP		 266dnl
267dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
8828e5c7
BP		 268dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
269dnl <REGEX> translated to uppercase.
064af421
BP		 270AC_DEFUN([OVS_GREP_IFELSE], [
271 AC_MSG_CHECKING([whether $2 matches in $1])
7507ec48
JG		 272 if test -f $1; then
273 grep '$2' $1 >/dev/null 2>&1
274 status=$?
275 case $status in
276 0)
277 AC_MSG_RESULT([yes])
8828e5c7 278 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
7507ec48
JG		 279 ;;
280 1)
281 AC_MSG_RESULT([no])
282 $4
283 ;;
284 *)
285 AC_MSG_ERROR([grep exited with status $status])
286 ;;
287 esac
288 else
289 AC_MSG_RESULT([file not found])
290 $4
291 fi
064af421
BP		 292])
293
13dd4a97
JS		 294dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
295dnl
296dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
297dnl structure definition. If this is successful, runs IF-MATCH, otherwise
298dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
299dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
300dnl translated to uppercase.
301AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
302 AC_MSG_CHECKING([whether $2 has member $3 in $1])
303 if test -f $1; then
83a27884 304 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
13dd4a97
JS		 305 status=$?
306 case $status in
307 0)
308 AC_MSG_RESULT([yes])
309 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
310 ;;
311 1)
312 AC_MSG_RESULT([no])
313 $5
314 ;;
315 *)
316 AC_MSG_ERROR([grep exited with status $status])
317 ;;
318 esac
319 else
320 AC_MSG_RESULT([file not found])
321 $5
322 fi
323])
324
064af421
BP		 325dnl OVS_DEFINE(NAME)
326dnl
327dnl Defines NAME to 1 in kcompat.h.
328AC_DEFUN([OVS_DEFINE], [
22bcc0e7 329 echo '#define $1 1' >> datapath/linux/kcompat.h.new
064af421
BP		 330])
331
e3438006 332dnl OVS_CHECK_LINUX_COMPAT
064af421 333dnl
8063e095 334dnl Runs various Autoconf checks on the Linux kernel source in
e3438006
BP		 335dnl the directory in $KBUILD.
336AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
22bcc0e7
JG		 337 rm -f datapath/linux/kcompat.h.new
338 mkdir -p datapath/linux
339 : > datapath/linux/kcompat.h.new
4aa13c0c 340
e23775f2
PS		 341 echo '#include <linux/version.h>
342#ifndef RHEL_RELEASE_CODE
343#define RHEL_RELEASE_CODE 0
344#define RHEL_RELEASE_VERSION(a, b) 0
345#endif' >> datapath/linux/kcompat.h.new
346
e3438006 347 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
25fb3596
JG		 348 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
349
e23775f2
PS		 350 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
351 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
352 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
353
e3438006 354 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
4303ec34 355 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
4aa13c0c 356
d923a695 357 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
e2f3178f 358 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
d923a695 359
e23775f2
PS		 360 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
361 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
362 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
d923a695 363 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
ec96e663 364 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
d923a695 365
e3438006 366 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
46d69d18 367 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
2ea82414
PS		 368 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
369 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
e23775f2
PS		 370 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
371 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
372
13dd4a97
JS		 373 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
374 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
213e1f54 375 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_do_fragment])
920fc091 376 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_is_fragment])
cfda4537 377 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
0f09d6e3
JS		 378
379 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
380 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
06f1a61a 381 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
595e069a
JS		 382 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
383 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
8f00ece9
JS		 384 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
385 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
e0d45da3 386 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
91408ae0
JS		 387 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
388 [frags_work])
d1c390e6
JS		 389 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
390 [rwlock])
e0d45da3
JS		 391 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
392 [list_evictor])
401da7b9
JS		 393 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
394 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
8f00ece9 395
e23775f2 396 OVS_GREP_IFELSE([$KSRC/include/net/dst_metadata.h], [metadata_dst])
4aa13c0c 397
fdce83a3
PS		 398 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
399 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
e3438006
BP		 400 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
401 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
402 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
3f506f07 403 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
42d5dd95
TG		 404 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
405 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
e23775f2 406 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
d1890de5 407 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
8063e095
PS		 408 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
409 dnl So check type of tstats.
410 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
411 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
e23775f2
PS		 412 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
413 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
414 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
415 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
416 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
417 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
418
419 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
420 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
cd7330d0
PS		 421 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
422 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
e4e04c3b 423 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
2b64e8fc 424 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
e2f3178f 425
057772cf
JS		 426 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
427 [tmpl_alloc.*conntrack_zone],
428 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
fa67f8e0
JS		 429 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
430 [l3num.*struct.net],
431 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
ac9cd0d2
JS		 432 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
433 [nf_ct_zone_init])
459064e7
JS		 434 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
435 [nf_connlabels_get])
34c3c2b7
JS		 436 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
437 [nf_ct_frag6_consume_orig])
438 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
439 [nf_ct_frag6_output])
057772cf 440
e2f3178f 441 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32])
f000c879 442 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
4aa13c0c 443
e23775f2
PS		 444 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
445 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
446 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
447 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
448 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
449
e3438006
BP		 450 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
451 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
cf6cb3a2 452 [rcu_read_lock_held])])
8fa52250 453 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
cf6cb3a2 454
6a33828d
BP		 455 # Check for the proto_data_valid member in struct sk_buff. The [^@]
456 # is necessary because some versions of this header remove the
457 # member but retain the kerneldoc comment that describes it (which
458 # starts with @). The brackets must be doubled because of m4
459 # quoting rules.
e3438006 460 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
6a33828d 461 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
ccb75a28 462 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
e23775f2
PS		 463 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
464 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_mac_header])
465 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_network_header])
d23239a2 466 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
e23775f2
PS		 467 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_scrub_packet.*xnet],
468 [OVS_DEFINE([HAVE_SKB_SCRUB_PACKET_XNET])])
60c4904f 469 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
5640cbd8
JG		 470 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
471 [OVS_DEFINE([HAVE_U16_RXHASH])])
e3438006 472 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
85444c3f 473 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
e3438006 474 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
8828e5c7 475 [skb_copy_from_linear_data_offset])
b9c15df9
PS		 476 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
477 [skb_reset_tail_pointer])
e3438006
BP		 478 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
479 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_transport_header],
4aa13c0c 480 [OVS_DEFINE([HAVE_SKBUFF_HEADER_HELPERS])])
e3438006 481 OVS_GREP_IFELSE([$KSRC/include/linux/icmpv6.h], [icmp6_hdr],
d31f1109 482 [OVS_DEFINE([HAVE_ICMP6_HDR])])
e3438006 483 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
4aa13c0c 484 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
e3438006 485 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
6c4ea27c 486 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
da4bbeb7 487 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
0aa6fda7 488 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
d923a695 489 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
dc0d542d 490 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
1edc458d 491 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
e2f3178f
PK		 492 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash])
493 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
705e9260
PS		 494 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
495 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
75e93287
FL		 496 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
497 [OVS_DEFINE([HAVE_L4_RXHASH])])
5cce04b6 498 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
97894370
TG		 499 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
500 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
4aa13c0c 501
e3438006 502 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
4aa13c0c 503 [OVS_DEFINE([HAVE_BOOL_TYPE])])
e3438006 504 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
e215ebca 505 [OVS_DEFINE([HAVE_CSUM_TYPES])])
8dbe1f9f
PS		 506 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
507 [OVS_DEFINE([HAVE_CSUM_TYPES])])
4aa13c0c 508
e3438006
BP		 509 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
510 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
4aa13c0c 511
0d03e51c 512 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
1dba1690 513 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
0d03e51c 514
114fce23
SG		 515 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
516 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
14002a59 517 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
705e9260 518 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_new_unicast])
6233a1bd
TG		 519 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
520 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
c623ba49 521 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
13dd4a97
JS		 522 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
523 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
524
525 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
526 [genl_multicast_group], [id])
fdce83a3 527 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
13dd4a97 528
cc1d0dea 529 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
e23775f2 530 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
8abaa53c 531 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
e23775f2 532 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
2d3ef70b 533 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
a94ebc39
JS		 534 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
535 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
213e1f54
JS		 536 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
537 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
538
e3438006 539 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
42d5dd95
TG		 540 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
541 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
542 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
dd693f9b 543 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
e3438006 544 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
0fcc086d 545 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
6dbd98e6
SH		 546 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
547 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
4aa13c0c 548
c4e976db
JG		 549 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
550
e3438006 551 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
431488e6 552 [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
1f649f1c 553 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
17e3889f 554 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
e23775f2 555 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
431488e6 556
09f27436
JG		 557 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
558
3174a818
TG		 559 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
560 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
e23775f2 561 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [VXLAN_HF_RCO])
f6a0c895 562 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
13dd4a97
JS		 563 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
564 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
565 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
566 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_set_csum])
e23775f2
PS		 567 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
568 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [ipv6_v6only],
569 [OVS_DEFINE([HAVE_UDP_TUNNEL_IPV6])])
570
571 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
f6a0c895
TG		 572 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
573 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
574 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
f285d3e7 575
21a719d6
FL		 576 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
577 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
578
22bcc0e7
JG		 579 if cmp -s datapath/linux/kcompat.h.new \
580 datapath/linux/kcompat.h >/dev/null 2>&1; then
581 rm datapath/linux/kcompat.h.new
064af421 582 else
22bcc0e7 583 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
064af421
BP		 584 fi
585])
586
587dnl Checks for net/if_packet.h.
588AC_DEFUN([OVS_CHECK_IF_PACKET],
589 [AC_CHECK_HEADER([net/if_packet.h],
590 [HAVE_IF_PACKET=yes],
591 [HAVE_IF_PACKET=no])
592 AM_CONDITIONAL([HAVE_IF_PACKET], [test "$HAVE_IF_PACKET" = yes])
593 if test "$HAVE_IF_PACKET" = yes; then
594 AC_DEFINE([HAVE_IF_PACKET], [1],
595 [Define to 1 if net/if_packet.h is available.])
596 fi])
597
f6eb6b20 598dnl Checks for net/if_dl.h.
d30e714c 599dnl
d23fa2ed
YT		 600dnl (We use this as a proxy for checking whether we're building on FreeBSD
601dnl or NetBSD.)
9360d9b7
EM		 602AC_DEFUN([OVS_CHECK_IF_DL],
603 [AC_CHECK_HEADER([net/if_dl.h],
604 [HAVE_IF_DL=yes],
605 [HAVE_IF_DL=no])
606 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
607 if test "$HAVE_IF_DL" = yes; then
608 AC_DEFINE([HAVE_IF_DL], [1],
609 [Define to 1 if net/if_dl.h is available.])
d30e714c 610
d23fa2ed 611 # On these platforms we use libpcap to access network devices.
d30e714c 612 AC_SEARCH_LIBS([pcap_open_live], [pcap])
9360d9b7
EM		 613 fi])
614
e50097d2
BP		 615dnl Checks for buggy strtok_r.
616dnl
617dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
618dnl with optimization that can cause segfaults:
619dnl
620dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
621AC_DEFUN([OVS_CHECK_STRTOK_R],
622 [AC_CACHE_CHECK(
623 [whether strtok_r macro segfaults on some inputs],
624 [ovs_cv_strtok_r_bug],
625 [AC_RUN_IFELSE(
626 [AC_LANG_PROGRAM([#include <stdio.h>
627 #include <string.h>
628 ],
416e7132
BP		 629 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
630 /* Assume bug is present, because relatively minor
631 changes in compiler settings (e.g. optimization
632 level) can make it crop up. */
633 return 1;
634 #else
635 char string[] = ":::";
e50097d2
BP		 636 char *save_ptr = (char *) 0xc0ffee;
637 char *token1, *token2;
638 token1 = strtok_r(string, ":", &save_ptr);
639 token2 = strtok_r(NULL, ":", &save_ptr);
5819a7cd 640 freopen ("/dev/null", "w", stdout);
e50097d2
BP		 641 printf ("%s %s\n", token1, token2);
642 return 0;
416e7132 643 #endif
e50097d2
BP		 644 ]])],
645 [ovs_cv_strtok_r_bug=no],
646 [ovs_cv_strtok_r_bug=yes],
647 [ovs_cv_strtok_r_bug=yes])])
648 if test $ovs_cv_strtok_r_bug = yes; then
649 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
650 [Define if strtok_r macro segfaults on some inputs])
651 fi
652])
653
064af421
BP		 654dnl ----------------------------------------------------------------------
655dnl These macros are from GNU PSPP, with the following original license:
656dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
657dnl This file is free software; the Free Software Foundation
658dnl gives unlimited permission to copy and/or distribute it,
659dnl with or without modifications, as long as this notice is preserved.
660
50194820 661AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
7c96151e 662 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-=], [__])])dnl
064af421
BP		 663 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
664 [ovs_save_CFLAGS="$CFLAGS"
50194820
BP		 665 dnl Include -Werror in the compiler options, because without -Werror
666 dnl clang's GCC-compatible compiler driver does not return a failure
667 dnl exit status even though it complains about options it does not
668 dnl understand.
c2deac54
YT		 669 dnl
670 dnl Also, check stderr as gcc exits with status 0 for options
671 dnl rejected at getopt level.
672 dnl % touch /tmp/a.c
673 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
674 dnl gcc: unrecognized option '-Qunused-arguments'
675 dnl 0
676 dnl %
50194820 677 CFLAGS="$CFLAGS $WERROR $1"
c2deac54 678 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [if test -s conftest.err && grep "unrecognized option" conftest.err; then ovs_cv_name[]=no; else ovs_cv_name[]=yes; fi], [ovs_cv_name[]=no])
064af421
BP		 679 CFLAGS="$ovs_save_CFLAGS"])
680 if test $ovs_cv_name = yes; then
83f6c050 681 m4_if([$2], [], [:], [$2])
064af421
BP		 682 else
683 m4_if([$3], [], [:], [$3])
684 fi
685])
686
50194820
BP		 687dnl OVS_CHECK_WERROR
688dnl
689dnl Check whether the C compiler accepts -Werror.
690dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
691AC_DEFUN([OVS_CHECK_WERROR],
692 [WERROR=
693 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
694
695dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
696dnl Check whether the given C compiler OPTION is accepted.
697dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
698AC_DEFUN([OVS_CHECK_CC_OPTION],
699 [AC_REQUIRE([OVS_CHECK_WERROR])
700 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
701
064af421
BP		 702dnl OVS_ENABLE_OPTION([OPTION])
703dnl Check whether the given C compiler OPTION is accepted.
d161c099 704dnl If so, add it to WARNING_FLAGS.
064af421
BP		 705dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
706AC_DEFUN([OVS_ENABLE_OPTION],
d161c099
BP		 707 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
708 AC_SUBST([WARNING_FLAGS])])
c72e245a
BP		 709
710dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
711dnl Check whether the given C compiler OPTION is accepted.
712dnl If so, enable the given Automake CONDITIONAL.
713
714dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
715AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
716 [OVS_CHECK_CC_OPTION(
717 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
718 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
064af421 719dnl ----------------------------------------------------------------------
ed2d4f6a
BP		 720
721dnl Check for too-old XenServer.
722AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
723 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
724 [if test -e /etc/redhat-release; then
725 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
726 fi
727 if test -z "$ovs_cv_xsversion"; then
728 ovs_cv_xsversion=none
729 fi])
730 case $ovs_cv_xsversion in
731 none)
732 ;;
733
734 [[1-9]][[0-9]]* | dnl XenServer 10 or later
735 [[6-9]]* | dnl XenServer 6 or later
736 5.[[7-9]]* | dnl XenServer 5.7 or later
737 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
738 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
739 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
740 ;;
741
742 *)
743 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.)])
744 ;;
745 esac])
29d935d6
BP		 746
747dnl OVS_MAKE_HAS_IF([if-true], [if-false])
748dnl
749dnl Checks whether make has the GNU make $(if condition,then,else) extension.
750dnl Runs 'if-true' if so, 'if-false' otherwise.
372d58a4 751AC_DEFUN([OVS_CHECK_MAKE_IF],
29d935d6
BP		 752 [AC_CACHE_CHECK(
753 [whether ${MAKE-make} has GNU make \$(if) extension],
754 [ovs_cv_gnu_make_if],
755 [cat <<'EOF' > conftest.mk
756conftest.out:
380f86e4 757 echo $(if x,y,z) > conftest.out
29d935d6
BP		 758.PHONY: all
759EOF
760 rm -f conftest.out
761 AS_ECHO(["$as_me:$LINENO: invoking ${MAKE-make} -f conftest.mk all:"]) >&AS_MESSAGE_LOG_FD 2>&1
762 ${MAKE-make} -f conftest.mk conftest.out >&AS_MESSAGE_LOG_FD 2>&1
763 AS_ECHO(["$as_me:$LINENO: conftest.out contains:"]) >&AS_MESSAGE_LOG_FD 2>&1
764 cat conftest.out >&AS_MESSAGE_LOG_FD 2>&1
765 result=`cat conftest.out`
766 rm -f conftest.mk conftest.out
767 if test "X$result" = "Xy"; then
768 ovs_cv_gnu_make_if=yes
769 else
770 ovs_cv_gnu_make_if=no
372d58a4 771 fi])])
29d935d6 772
b4e1bf8b
BP		 773dnl OVS_CHECK_GNU_MAKE
774dnl
775dnl Checks whether make is GNU make (because Linux kernel Makefiles
776dnl only work with GNU make).
777AC_DEFUN([OVS_CHECK_GNU_MAKE],
778 [AC_CACHE_CHECK(
779 [whether ${MAKE-make} is GNU make],
780 [ovs_cv_gnu_make],
781 [rm -f conftest.out
782 AS_ECHO(["$as_me:$LINENO: invoking ${MAKE-make} --version:"]) >&AS_MESSAGE_LOG_FD 2>&1
783 ${MAKE-make} --version >conftest.out 2>&1
784 cat conftest.out >&AS_MESSAGE_LOG_FD 2>&1
785 result=`cat conftest.out`
786 rm -f conftest.mk conftest.out
787
788 case $result in # (
789 GNU*) ovs_cv_gnu_make=yes ;; # (
790 *) ovs_cv_gnu_make=no ;;
791 esac])
792 AM_CONDITIONAL([GNU_MAKE], [test $ovs_cv_gnu_make = yes])])
793
643c0c34
BP		 794dnl OVS_CHECK_SPARSE_TARGET
795dnl
796dnl The "cgcc" script from "sparse" isn't very good at detecting the
797dnl target for which the code is being built. This helps it out.
798AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
799 [AC_CACHE_CHECK(
800 [target hint for cgcc],
801 [ac_cv_sparse_target],
802 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
803 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
804 [x86_64-*], [ac_cv_sparse_target=x86_64],
805 [ac_cv_sparse_target=other])])
806 AS_CASE([$ac_cv_sparse_target],
807 [x86], [SPARSEFLAGS= CGCCFLAGS=-target=i86],
808 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS=-target=x86_64],
809 [SPARSEFLAGS= CGCCFLAGS=])
810 AC_SUBST([SPARSEFLAGS])
811 AC_SUBST([CGCCFLAGS])])
812
32e96ab7
AZ		 813dnl OVS_SPARSE_EXTRA_INCLUDES
814dnl
815dnl The cgcc script from "sparse" does not search gcc's default
816dnl search path. Get the default search path from GCC and pass
817dnl them to sparse.
818AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
819 AC_SUBST([SPARSE_EXTRA_INCLUDES],
820 [`$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 ' ' `] ))
821
29d935d6
BP		 822dnl OVS_ENABLE_SPARSE
823AC_DEFUN([OVS_ENABLE_SPARSE],
643c0c34 824 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
372d58a4 825 AC_REQUIRE([OVS_CHECK_MAKE_IF])
32e96ab7 826 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
372d58a4
BP		 827 : ${SPARSE=sparse}
828 AC_SUBST([SPARSE])
829 AC_CONFIG_COMMANDS_PRE(
830 [if test $ovs_cv_gnu_make_if = yes; then
38b7a52b 831 CC='$(if $(C),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'
372d58a4 832 fi])])
8a8cd0ac
BP		 833
834dnl OVS_PTHREAD_SET_NAME
835dnl
836dnl This checks for three known variants of pthreads functions for setting
837dnl the name of the current thread:
838dnl
839dnl glibc: int pthread_setname_np(pthread_t, const char *name);
840dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
841dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
842dnl
843dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
844dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
845dnl provide to it.
846dnl
847dnl This macro defines:
848dnl
849dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
850dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
851dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
852AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
853 [AC_CHECK_FUNCS([pthread_set_name_np])
854 if test $ac_cv_func_pthread_set_name_np != yes; then
855 AC_CACHE_CHECK(
856 [for pthread_setname_np() variant],
857 [ovs_cv_pthread_setname_np],
858 [AC_LINK_IFELSE(
a0903134 859 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac 860 ], [pthread_setname_np(pthread_self(), "name");])],
a0903134 861 [ovs_cv_pthread_setname_np=glibc],
8a8cd0ac 862 [AC_LINK_IFELSE(
a0903134 863 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac
BP		 864], [pthread_setname_np(pthread_self(), "%s", "name");])],
865 [ovs_cv_pthread_setname_np=netbsd],
a0903134 866 [ovs_cv_pthread_setname_np=none])])])
8a8cd0ac
BP		 867 case $ovs_cv_pthread_setname_np in # (
868 glibc)
a0903134
YT		 869 AC_DEFINE(
870 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
871 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
872 ;; # (
8a8cd0ac 873 netbsd)
a0903134
YT		 874 AC_DEFINE(
875 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
876 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
877 ;;
8a8cd0ac
BP		 878 esac
879 fi])
5020f5f0
BP		 880
881dnl OVS_CHECK_LINUX_HOST.
882dnl
883dnl Checks whether we're building for a Linux host, based on the presence of
884dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
885dnl LINUX based on the result.
886AC_DEFUN([OVS_CHECK_LINUX_HOST],
887 [AC_CACHE_CHECK(
888 [whether __linux__ is defined],
889 [ovs_cv_linux],
890 [AC_COMPILE_IFELSE(
891 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
892 [ovs_cv_linux=true],
893 [ovs_cv_linux=false])])
894 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])
openvswitch mirror