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Initialize the right database.
[mirror_ovs.git] / acinclude.m4
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064af421
BP		 1# -*- autoconf -*-
2
344f6253 3# Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 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"
308bf988
BP		 26 fi])
27
28 # Unless --enable-Werror is specified, report but do not fail the build
29 # for errors reported by flake8.
30 if test "X$enable_Werror" = Xyes; then
31 FLAKE8_WERROR=
32 else
33 FLAKE8_WERROR=-
34 fi
df265086
BP		 35 AC_SUBST([FLAKE8_WERROR])
36
37 # If --enable-Werror is specified, fail the build on sparse warnings.
38 if test "X$enable_Werror" = Xyes; then
39 SPARSE_WERROR=-Wsparse-error
40 else
41 SPARSE_WERROR=
42 fi
43 AC_SUBST([SPARSE_WERROR])])
a64e37a1 44
e3438006 45dnl OVS_CHECK_LINUX
064af421 46dnl
997d327d 47dnl Configure linux kernel source tree
e3438006 48AC_DEFUN([OVS_CHECK_LINUX], [
8a2d6596
BP		 49 AC_ARG_WITH([linux],
50 [AC_HELP_STRING([--with-linux=/path/to/linux],
51 [Specify the Linux kernel build directory])])
52 AC_ARG_WITH([linux-source],
53 [AC_HELP_STRING([--with-linux-source=/path/to/linux-source],
54 [Specify the Linux kernel source directory
a0903134
YT		 55 (usually figured out automatically from build
56 directory)])])
8a2d6596
BP		 57
58 # Deprecated equivalents to --with-linux, --with-linux-source.
59 AC_ARG_WITH([l26])
60 AC_ARG_WITH([l26-source])
61
62 if test X"$with_linux" != X; then
63 KBUILD=$with_linux
64 elif test X"$with_l26" != X; then
65 KBUILD=$with_l26
66 AC_MSG_WARN([--with-l26 is deprecated, please use --with-linux instead])
67 else
68 KBUILD=
69 fi
70
71 if test X"$KBUILD" != X; then
72 if test X"$with_linux_source" != X; then
73 KSRC=$with_linux_source
74 elif test X"$with_l26_source" != X; then
75 KSRC=$with_l26_source
76 AC_MSG_WARN([--with-l26-source is deprecated, please use --with-linux-source instead])
0a89c170
BP		 77 else
78 KSRC=
8a2d6596
BP		 79 fi
80 elif test X"$with_linux_source" != X || test X"$with_l26_source" != X; then
81 AC_MSG_ERROR([Linux source directory may not be specified without Linux build directory])
82 fi
83
e3438006
BP		 84 if test -n "$KBUILD"; then
85 KBUILD=`eval echo "$KBUILD"`
86 case $KBUILD in
0b6d72fc 87 /*) ;;
e3438006 88 *) KBUILD=`pwd`/$KBUILD ;;
0b6d72fc 89 esac
064af421 90
7c9e113b
BP		 91 # The build directory is what the user provided.
92 # Make sure that it exists.
8a2d6596 93 AC_MSG_CHECKING([for Linux build directory])
e3438006 94 if test -d "$KBUILD"; then
a0903134
YT		 95 AC_MSG_RESULT([$KBUILD])
96 AC_SUBST(KBUILD)
064af421 97 else
a0903134
YT		 98 AC_MSG_RESULT([no])
99 AC_ERROR([source dir $KBUILD doesn't exist])
064af421
BP		 100 fi
101
7c9e113b 102 # Debian breaks kernel headers into "source" header and "build" headers.
e3438006 103 # We want the source headers, but $KBUILD gives us the "build" headers.
7c9e113b 104 # Use heuristics to find the source headers.
8a2d6596 105 AC_MSG_CHECKING([for Linux source directory])
e3438006
BP		 106 if test -n "$KSRC"; then
107 KSRC=`eval echo "$KSRC"`
108 case $KSRC in
f5fb5de6 109 /*) ;;
e3438006 110 *) KSRC=`pwd`/$KSRC ;;
b57f675c 111 esac
e3438006 112 if test ! -e $KSRC/include/linux/kernel.h; then
53319f95 113 AC_MSG_ERROR([$KSRC is not a kernel source directory])
f5fb5de6
BP		 114 fi
115 else
e3438006
BP		 116 KSRC=$KBUILD
117 if test ! -e $KSRC/include/linux/kernel.h; then
fe0731b1
BP		 118 # Debian kernel build Makefiles tend to include a line of the form:
119 # MAKEARGS := -C /usr/src/linux-headers-3.2.0-1-common O=/usr/src/linux-headers-3.2.0-1-486
120 # First try to extract the source directory from this line.
121 KSRC=`sed -n 's/.*-C \([[^ ]]*\).*/\1/p' "$KBUILD"/Makefile`
122 if test ! -e "$KSRC"/include/linux/kernel.h; then
123 # Didn't work. Fall back to name-based heuristics that used to work.
124 case `echo "$KBUILD" | sed 's,/*$,,'` in # (
125 */build)
126 KSRC=`echo "$KBUILD" | sed 's,/build/*$,/source,'`
127 ;; # (
128 *)
129 KSRC=`(cd $KBUILD && pwd -P) | sed 's,-[[^-]]*$,-common,'`
130 ;;
131 esac
132 fi
f5fb5de6 133 fi
fe0731b1 134 if test ! -e "$KSRC"/include/linux/kernel.h; then
8a2d6596 135 AC_MSG_ERROR([cannot find source directory (please use --with-linux-source)])
7c9e113b
BP		 136 fi
137 fi
e3438006 138 AC_MSG_RESULT([$KSRC])
7c9e113b
BP		 139
140 AC_MSG_CHECKING([for kernel version])
71fe9970 141 version=`sed -n 's/^VERSION = //p' "$KSRC/Makefile"`
e3438006
BP		 142 patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$KSRC/Makefile"`
143 sublevel=`sed -n 's/^SUBLEVEL = //p' "$KSRC/Makefile"`
71fe9970 144 if test X"$version" = X || test X"$patchlevel" = X; then
7c9e113b 145 AC_ERROR([cannot determine kernel version])
71fe9970
BP		 146 elif test X"$sublevel" = X; then
147 kversion=$version.$patchlevel
148 else
149 kversion=$version.$patchlevel.$sublevel
7c9e113b 150 fi
71fe9970
BP		 151 AC_MSG_RESULT([$kversion])
152
3afcde43 153 if test "$version" -ge 4; then
7c84d7f4 154 if test "$version" = 4 && test "$patchlevel" -le 18; then
3afcde43 155 : # Linux 4.x
d76aabea 156 else
7c84d7f4 157 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 4.18.x is not supported (please refer to the FAQ for advice)])
d76aabea 158 fi
8063e095 159 elif test "$version" = 3 && test "$patchlevel" -ge 10; then
3afcde43 160 : # Linux 3.x
71fe9970 161 else
8063e095 162 AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 3.10 or later is required])
064af421 163 fi
2520f452
IY		 164 if (test ! -e "$KBUILD"/include/linux/version.h && \
165 test ! -e "$KBUILD"/include/generated/uapi/linux/version.h)|| \
e3438006
BP		 166 (test ! -e "$KBUILD"/include/linux/autoconf.h && \
167 test ! -e "$KBUILD"/include/generated/autoconf.h); then
a0903134 168 AC_MSG_ERROR([Linux kernel source in $KBUILD is not configured])
064af421 169 fi
e3438006 170 OVS_CHECK_LINUX_COMPAT
064af421 171 fi
e3438006 172 AM_CONDITIONAL(LINUX_ENABLED, test -n "$KBUILD")
064af421
BP		 173])
174
1dc0da67
PB		 175dnl OVS_CHECK_LINUX_TC
176dnl
177dnl Configure Linux tc compat.
178AC_DEFUN([OVS_CHECK_LINUX_TC], [
179 AC_COMPILE_IFELSE([
180 AC_LANG_PROGRAM([#include <linux/pkt_cls.h>], [
dd83253e 181 int x = TCA_FLOWER_KEY_ENC_IP_TTL_MASK;
1dc0da67 182 ])],
dd83253e
OG		 183 [AC_DEFINE([HAVE_TCA_FLOWER_KEY_ENC_IP_TTL_MASK], [1],
184 [Define to 1 if TCA_FLOWER_KEY_ENC_IP_TTL_MASK is available.])])
1dc0da67
PB		 185
186 AC_COMPILE_IFELSE([
187 AC_LANG_PROGRAM([#include <linux/tc_act/tc_vlan.h>], [
188 int x = TCA_VLAN_PUSH_VLAN_PRIORITY;
189 ])],
190 [AC_DEFINE([HAVE_TCA_VLAN_PUSH_VLAN_PRIORITY], [1],
dd83253e 191 [Define to 1 if TCA_VLAN_PUSH_VLAN_PRIORITY is available.])])
1dc0da67
PB		 192
193 AC_COMPILE_IFELSE([
194 AC_LANG_PROGRAM([#include <linux/tc_act/tc_tunnel_key.h>], [
4b12e454 195 int x = TCA_TUNNEL_KEY_ENC_TTL;
1dc0da67 196 ])],
4b12e454
OG		 197 [AC_DEFINE([HAVE_TCA_TUNNEL_KEY_ENC_TTL], [1],
198 [Define to 1 if TCA_TUNNEL_KEY_ENC_TTL is available.])])
e5b1657e
PB		 199
200 AC_COMPILE_IFELSE([
201 AC_LANG_PROGRAM([#include <linux/tc_act/tc_pedit.h>], [
202 int x = TCA_PEDIT_KEY_EX_HDR_TYPE_UDP;
203 ])],
204 [AC_DEFINE([HAVE_TCA_PEDIT_KEY_EX_HDR_TYPE_UDP], [1],
dd83253e 205 [Define to 1 if TCA_PEDIT_KEY_EX_HDR_TYPE_UDP is available.])])
1dc0da67
PB		 206])
207
8a9562d2
PS		 208dnl OVS_CHECK_DPDK
209dnl
210dnl Configure DPDK source tree
211AC_DEFUN([OVS_CHECK_DPDK], [
212 AC_ARG_WITH([dpdk],
213 [AC_HELP_STRING([--with-dpdk=/path/to/dpdk],
4c16ee48
MV		 214 [Specify the DPDK build directory])],
215 [have_dpdk=true])
8a9562d2 216
40b5ea86 217 AC_MSG_CHECKING([whether dpdk datapath is enabled])
4c16ee48 218 if test "$have_dpdk" != true || test "$with_dpdk" = no; then
40b5ea86
BB		 219 AC_MSG_RESULT([no])
220 DPDKLIB_FOUND=false
221 else
222 AC_MSG_RESULT([yes])
223 case "$with_dpdk" in
224 yes)
225 DPDK_AUTO_DISCOVER="true"
5b5aa2d8
CE		 226 PKG_CHECK_MODULES_STATIC([DPDK], [libdpdk], [
227 DPDK_INCLUDE="$DPDK_CFLAGS"
228 DPDK_LIB="$DPDK_LIBS"], [
229 DPDK_INCLUDE="-I/usr/local/include/dpdk -I/usr/include/dpdk"
230 DPDK_LIB="-ldpdk"])
40b5ea86
BB		 231 ;;
232 *)
233 DPDK_AUTO_DISCOVER="false"
96195c09 234 DPDK_INCLUDE_PATH="$with_dpdk/include"
40b5ea86
BB		 235 # If 'with_dpdk' is passed install directory, point to headers
236 # installed in $DESTDIR/$prefix/include/dpdk
96195c09
CE		 237 if test -e "$DPDK_INCLUDE_PATH/rte_config.h"; then
238 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH"
239 elif test -e "$DPDK_INCLUDE_PATH/dpdk/rte_config.h"; then
240 DPDK_INCLUDE="-I$DPDK_INCLUDE_PATH/dpdk"
214ac6d4 241 fi
40b5ea86 242 DPDK_LIB_DIR="$with_dpdk/lib"
5b5aa2d8 243 DPDK_LIB="-ldpdk"
40b5ea86
BB		 244 ;;
245 esac
8a9562d2 246
95626395
TG		 247 ovs_save_CFLAGS="$CFLAGS"
248 ovs_save_LDFLAGS="$LDFLAGS"
96195c09 249 CFLAGS="$CFLAGS $DPDK_INCLUDE"
40b5ea86
BB		 250 if test "$DPDK_AUTO_DISCOVER" = "false"; then
251 LDFLAGS="$LDFLAGS -L${DPDK_LIB_DIR}"
252 fi
253
865cee2b
IM		 254 AC_CHECK_HEADERS([rte_config.h], [], [
255 AC_MSG_ERROR([unable to find rte_config.h in $with_dpdk])
256 ], [AC_INCLUDES_DEFAULT])
257
435aaddd
CL		 258 AC_COMPILE_IFELSE([
259 AC_LANG_PROGRAM(
260 [
261 #include <rte_config.h>
4b3c58f3 262#if defined(RTE_LIBRTE_VHOST_NUMA) || defined(RTE_EAL_NUMA_AWARE_HUGEPAGES)
435aaddd
CL		 263#error
264#endif
265 ], [])
266 ], [],
267 [AC_SEARCH_LIBS([get_mempolicy],[numa],[],[AC_MSG_ERROR([unable to find libnuma, install the dependency package])])
5b9bf9e0 268 AC_DEFINE([VHOST_NUMA], [1], [NUMA Aware vHost support detected in DPDK.])])
16dfb8fa 269
4b88d678
CL		 270 AC_COMPILE_IFELSE([
271 AC_LANG_PROGRAM(
272 [
273 #include <rte_config.h>
274#if RTE_LIBRTE_PMD_PCAP
275#error
276#endif
277 ], [])
278 ], [],
279 [AC_SEARCH_LIBS([pcap_dump],[pcap],[],[AC_MSG_ERROR([unable to find libpcap, install the dependency package])])
4b88d678
CL		 280 AC_COMPILE_IFELSE([
281 AC_LANG_PROGRAM(
282 [
283 #include <rte_config.h>
284#if RTE_LIBRTE_PDUMP
285#error
286#endif
287 ], [])
288 ], [],
289 [AC_DEFINE([DPDK_PDUMP], [1], [DPDK pdump enabled in OVS.])])
290 ])
291
fc3b425f
TR		 292 AC_COMPILE_IFELSE([
293 AC_LANG_PROGRAM(
294 [
295 #include <rte_config.h>
296#if RTE_LIBRTE_MLX5_PMD
297#error
298#endif
299 ], [])
300 ], [],
301 [AC_SEARCH_LIBS([mnl_attr_put],[mnl],[],[AC_MSG_ERROR([unable to find libmnl, install the dependency package])])
fc3b425f
TR		 302 AC_DEFINE([DPDK_MNL], [1], [MLX5 PMD detected in DPDK.])])
303
c1223b11
DDP		 304 # On some systems we have to add -ldl to link with dpdk
305 #
306 # This code, at first, tries to link without -ldl (""),
307 # then adds it and tries again.
308 # Before each attempt the search cache must be unset,
309 # otherwise autoconf will stick with the old result
310
40b5ea86 311 DPDKLIB_FOUND=false
c1223b11
DDP		 312 save_LIBS=$LIBS
313 for extras in "" "-ldl"; do
47ab42a0 314 LIBS="$DPDK_LIB $extras $save_LIBS"
c1223b11
DDP		 315 AC_LINK_IFELSE(
316 [AC_LANG_PROGRAM([#include <rte_config.h>
317 #include <rte_eal.h>],
318 [int rte_argc; char ** rte_argv;
319 rte_eal_init(rte_argc, rte_argv);])],
40b5ea86
BB		 320 [DPDKLIB_FOUND=true])
321 if $DPDKLIB_FOUND; then
c1223b11
DDP		 322 break
323 fi
324 done
40b5ea86
BB		 325
326 # If linking unsuccessful
327 if test "$DPDKLIB_FOUND" = "false" ; then
328 if $DPDK_AUTO_DISCOVER; then
329 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])
330 else
331 AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR])
332 fi
c1223b11 333 fi
95626395
TG		 334 CFLAGS="$ovs_save_CFLAGS"
335 LDFLAGS="$ovs_save_LDFLAGS"
40b5ea86
BB		 336 if test "$DPDK_AUTO_DISCOVER" = "false"; then
337 OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR"
338 fi
96195c09 339 OVS_CFLAGS="$OVS_CFLAGS $DPDK_INCLUDE"
ab2a3154 340 OVS_ENABLE_OPTION([-mssse3])
8a9562d2 341
3c94676c 342 # DPDK pmd drivers are not linked unless --whole-archive is used.
d7310583
DDP		 343 #
344 # This happens because the rest of the DPDK code doesn't use any symbol in
345 # the pmd driver objects, and the drivers register themselves using an
346 # __attribute__((constructor)) function.
347 #
348 # These options are specified inside a single -Wl directive to prevent
349 # autotools from reordering them.
5b5aa2d8
CE		 350 #
351 # OTOH newer versions of dpdk pkg-config (generated with Meson)
352 # will already have flagged just the right set of libs with
353 # --whole-archive - in those cases do not wrap it once more.
354 case "$DPDK_LIB" in
355 *whole-archive*) DPDK_vswitchd_LDFLAGS=$DPDK_LIB;;
356 *) DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive
357 esac
9475dfeb 358 AC_SUBST([DPDK_vswitchd_LDFLAGS])
8a9562d2 359 AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.])
8a9562d2
PS		 360 fi
361
40b5ea86 362 AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true)
8a9562d2
PS		 363])
364
8828e5c7 365dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH])
064af421
BP		 366dnl
367dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH.
8828e5c7
BP		 368dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with
369dnl <REGEX> translated to uppercase.
064af421
BP		 370AC_DEFUN([OVS_GREP_IFELSE], [
371 AC_MSG_CHECKING([whether $2 matches in $1])
7507ec48
JG		 372 if test -f $1; then
373 grep '$2' $1 >/dev/null 2>&1
374 status=$?
375 case $status in
997d327d 376 0)
7507ec48 377 AC_MSG_RESULT([yes])
8828e5c7 378 m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3])
7507ec48 379 ;;
997d327d 380 1)
7507ec48
JG		 381 AC_MSG_RESULT([no])
382 $4
383 ;;
997d327d 384 *)
7507ec48
JG		 385 AC_MSG_ERROR([grep exited with status $status])
386 ;;
387 esac
388 else
389 AC_MSG_RESULT([file not found])
390 $4
391 fi
064af421
BP		 392])
393
13dd4a97
JS		 394dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH])
395dnl
396dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the
397dnl structure definition. If this is successful, runs IF-MATCH, otherwise
398dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to
399dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX>
400dnl translated to uppercase.
401AC_DEFUN([OVS_FIND_FIELD_IFELSE], [
402 AC_MSG_CHECKING([whether $2 has member $3 in $1])
403 if test -f $1; then
83a27884 404 awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null
13dd4a97
JS		 405 status=$?
406 case $status in
407 0)
408 AC_MSG_RESULT([yes])
409 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
410 ;;
411 1)
412 AC_MSG_RESULT([no])
413 $5
414 ;;
415 *)
416 AC_MSG_ERROR([grep exited with status $status])
417 ;;
418 esac
419 else
420 AC_MSG_RESULT([file not found])
421 $5
422 fi
423])
424
71ce9edd
JR		 425dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH])
426dnl
427dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within
428dnl the function signature starting from the line matching FUNCTION
429dnl and ending with the line containing the closing parenthesis. If
430dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If
431dnl IF-MATCH is empty then it defines to
432dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and
433dnl <REGEX> translated to uppercase.
434AC_DEFUN([OVS_FIND_PARAM_IFELSE], [
435 AC_MSG_CHECKING([whether $2 has parameter $3 in $1])
436 if test -f $1; then
437 awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null
438 status=$?
439 case $status in
440 0)
441 AC_MSG_RESULT([yes])
442 m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4])
443 ;;
444 1)
445 AC_MSG_RESULT([no])
446 $5
447 ;;
448 *)
449 AC_MSG_ERROR([grep exited with status $status])
450 ;;
451 esac
452 else
453 AC_MSG_RESULT([file not found])
454 $5
455 fi
456])
457
064af421
BP		 458dnl OVS_DEFINE(NAME)
459dnl
460dnl Defines NAME to 1 in kcompat.h.
461AC_DEFUN([OVS_DEFINE], [
22bcc0e7 462 echo '#define $1 1' >> datapath/linux/kcompat.h.new
064af421
BP		 463])
464
e3438006 465dnl OVS_CHECK_LINUX_COMPAT
064af421 466dnl
8063e095 467dnl Runs various Autoconf checks on the Linux kernel source in
e3438006
BP		 468dnl the directory in $KBUILD.
469AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
22bcc0e7
JG		 470 rm -f datapath/linux/kcompat.h.new
471 mkdir -p datapath/linux
472 : > datapath/linux/kcompat.h.new
4aa13c0c 473
e23775f2
PS		 474 echo '#include <linux/version.h>
475#ifndef RHEL_RELEASE_CODE
476#define RHEL_RELEASE_CODE 0
477#define RHEL_RELEASE_VERSION(a, b) 0
478#endif' >> datapath/linux/kcompat.h.new
479
e3438006 480 OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,],
25fb3596
JG		 481 [OVS_DEFINE([HAVE_CSUM_COPY_DBG])])
482
db1dcb23
DB		 483 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6_get_cookie],
484 [OVS_DEFINE([HAVE_RT6_GET_COOKIE])])
485
e23775f2
PS		 486 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net],
487 [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])])
488 OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub])
489
e3438006 490 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST])
4303ec34 491 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL])
54125dd0 492 OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [PTR_ERR_OR_ZERO])
4aa13c0c 493
8aef057b 494 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [static_branch_unlikely(],
6660a959 495 [OVS_DEFINE([HAVE_UPSTREAM_STATIC_KEY])])
8aef057b
YHW		 496 OVS_GREP_IFELSE([$KSRC/include/linux/jump_label.h], [DEFINE_STATIC_KEY_FALSE],
497 [OVS_DEFINE([HAVE_DEFINE_STATIC_KEY])])
6660a959 498
d923a695 499 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random])
e2f3178f 500 OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy])
d923a695 501
e23775f2
PS		 502 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS])
503 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64])
504 OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64])
d923a695 505 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto])
ec96e663 506 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside])
d923a695 507
e3438006 508 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast])
46d69d18 509 OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset])
2ea82414
PS		 510 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry],
511 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])])
e23775f2
PS		 512 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net],
513 [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])])
514
13dd4a97
JS		 515 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net],
516 [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])])
39c0ff22
JS		 517 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net],
518 [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])])
0374bcbe
EB		 519 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
520 [ip_do_fragment], [net],
521 [OVS_DEFINE([HAVE_IP_DO_FRAGMENT_TAKES_NET])])
0643a78b
PS		 522 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip.h],
523 [ip_local_out], [net],
524 [OVS_DEFINE([HAVE_IP_LOCAL_OUT_TAKES_NET])])
525
cfda4537 526 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu])
0f09d6e3
JS		 527
528 OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU],
529 [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])])
06f1a61a 530 OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu])
595e069a
JS		 531 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const],
532 [OVS_DEFINE([HAVE_INET_FRAGS_CONST])])
8f00ece9
JS		 533 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in],
534 [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])])
e0d45da3 535 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting])
ccd0a13b 536 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evictor])
91408ae0
JS		 537 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
538 [frags_work])
d1c390e6
JS		 539 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
540 [rwlock])
e0d45da3
JS		 541 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue],
542 [list_evictor])
38f45380 543 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_lru_move])
6ccf21ca
YHW		 544 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/inet_frag.h],
545 [sub_frag_mem_limit], [struct.netns_frags],
546 [OVS_DEFINE([HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS])])
547 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [void.*inet_frags_init],
548 [OVS_DEFINE([HAVE_VOID_INET_FRAGS_INIT])])
401da7b9
JS		 549 OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif],
550 [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])])
8f00ece9 551
f2252c61
PS		 552 dnl Check for dst_cache and ipv6 lable to use backported tunnel infrastructure.
553 dnl OVS does not really need ipv6 label field, but its presence signifies that
554 dnl the stack has all required ipv6 support.
555 dnl OVS also does not need dst_cache But this dependency allows us to write
556 dnl much cleaner code.
557
3259c4ff
PS		 558 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip_tunnels.h], [ip_tunnel_key],
559 [label],
560 [OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h],
561 [iptunnel_pull_offloads],
997d327d 562 [OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
e1ededf4
GR		 563 [OVS_GREP_IFELSE([$KSRC/include/net/erspan.h], [erspan_md2],
564 [OVS_DEFINE([USE_UPSTREAM_TUNNEL])])])])])
4aa13c0c 565
138df3e5
GR		 566 OVS_GREP_IFELSE([$KSRC/include/net/dst_cache.h], [dst_cache],
567 [OVS_DEFINE([USE_BUILTIN_DST_CACHE])])
65590144
YHW		 568 OVS_GREP_IFELSE([$KSRC/include/net/mpls.h], [mpls_hdr],
569 [OVS_DEFINE([MPLS_HEADER_IS_L3])])
fdce83a3
PS		 570 OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net],
571 [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])])
aad7cb91 572 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_fill_metadata_dst])
e3438006
BP		 573 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro])
574 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats])
575 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu])
3f506f07 576 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level])
42d5dd95 577 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment])
96b82f6d 578 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_gso_error_unwind])
42d5dd95 579 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol])
e23775f2 580 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink])
0a0d9095
PS		 581 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_features_check],
582 [OVS_DEFINE([USE_UPSTREAM_TUNNEL_GSO])])
f2252c61
PS		 583 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_vxlan_port])
584 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_add_geneve_port])
e2e11c89 585 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_udp_tunnel_add])
d1890de5 586 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t])
8063e095
PS		 587 dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats.
588 dnl So check type of tstats.
589 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats],
590 [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])])
e23775f2
PS		 591 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device],
592 [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])])
a0c9fedc 593 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [skb_csum_hwoffload_help])
e23775f2
PS		 594 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload])
595 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff],
596 [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])])
597 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum])
8ce37339 598 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [IFF_PHONY_HEADROOM])
6ccf21ca
YHW		 599 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
600 [extended])
7efb1e09
PS		 601 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
602 [netdev_master_upper_dev_link], [upper_priv],
603 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_PRIV])])
b7ab7316
YHW		 604 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
605 [netdev_master_upper_dev_link_rh],
606 [OVS_DEFINE([HAVE_NETDEV_MASTER_UPPER_DEV_LINK_RH])])
607
6c0bf091
JW		 608 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
609 [max_mtu])
39ca3383
YHW		 610 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops_extended],
611 [ndo_change_mtu], [OVS_DEFINE([HAVE_RHEL7_MAX_MTU])])
e23775f2
PS		 612
613 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state])
614 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook])
cd7330d0
PS		 615 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops],
616 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])])
0643a78b
PS		 617 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn], [priv],
618 [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_PRIV])])
619 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
620 [owner], [OVS_DEFINE([HAVE_NF_HOOKS_OPS_OWNER])])
179fccce
YHW		 621 OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [NFPROTO_INET])
622
0643a78b 623
e4e04c3b 624 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops],
2b64e8fc 625 [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])])
e2f3178f 626
6d9b6937
JR		 627 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
628 [nf_conn], [struct timer_list[[ \t]]*timeout],
629 [OVS_DEFINE([HAVE_NF_CONN_TIMER])])
630 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
631 [nf_ct_delete(], [OVS_DEFINE([HAVE_NF_CT_DELETE])])
632
71ce9edd
JR		 633 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
634 [nf_ct_tmpl_alloc], [nf_conntrack_zone],
057772cf 635 [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])])
71ce9edd
JR		 636 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
637 [nf_ct_get_tuplepr], [struct.net],
fa67f8e0 638 [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])])
dfa791b2
FW		 639 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
640 [nf_ct_set])
56ec5593
JS		 641 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h],
642 [nf_ct_is_untracked])
ac9cd0d2
JS		 643 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
644 [nf_ct_zone_init])
eca4cde0
YS		 645 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_l3proto.h],
646 [net_ns_get])
459064e7
JS		 647 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
648 [nf_connlabels_get])
7f2ab8cd
JR		 649 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
650 [nf_connlabels_get], [int bit],
651 [OVS_DEFINE([HAVE_NF_CONNLABELS_GET_TAKES_BIT])])
9f04eabe
JR		 652 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
653 [nf_conn_labels], [words])
0d330e42
JR		 654 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add])
655 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding])
fdec3c17 656 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_range2])
0d330e42 657 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust])
74496432
YHW		 658 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_count.h], [nf_conncount_gc_list],
659 [OVS_DEFINE([HAVE_UPSTREAM_NF_CONNCOUNT])])
057772cf 660
e2f3178f 661 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32])
f000c879 662 OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
4aa13c0c 663
e23775f2
PS		 664 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
665 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
666 OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net],
667 [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])])
668 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t])
669
e3438006
BP		 670 OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [],
671 [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h],
cf6cb3a2 672 [rcu_read_lock_held])])
8fa52250 673 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held])
3d10a0c8 674 OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [net_rwsem])
997d327d 675
6a33828d
BP		 676 # Check for the proto_data_valid member in struct sk_buff. The [^@]
677 # is necessary because some versions of this header remove the
678 # member but retain the kerneldoc comment that describes it (which
679 # starts with @). The brackets must be doubled because of m4
680 # quoting rules.
e3438006 681 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid],
6a33828d 682 [OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
ccb75a28 683 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset])
e23775f2 684 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol])
f2252c61 685 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol_type])
c1eb2500 686 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_inner_transport_offset])
d23239a2 687 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list])
60c4904f 688 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash])
5640cbd8
JG		 689 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash],
690 [OVS_DEFINE([HAVE_U16_RXHASH])])
e3438006 691 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(],
85444c3f 692 [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])])
997d327d 693 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
8828e5c7 694 [skb_copy_from_linear_data_offset])
b9c15df9
PS		 695 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
696 [skb_reset_tail_pointer])
e3438006 697 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head])
e3438006 698 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro],
4aa13c0c 699 [OVS_DEFINE([HAVE_SKB_WARN_LRO])])
e3438006 700 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb])
6c4ea27c 701 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page])
da4bbeb7 702 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list])
0aa6fda7 703 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc])
d923a695 704 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len])
dc0d542d 705 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone])
1edc458d 706 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags])
c253c2e3
MC		 707 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(],
708 [OVS_DEFINE([HAVE_SKB_GET_HASH])])
e2f3178f 709 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash])
705e9260
PS		 710 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(],
711 [OVS_DEFINE([HAVE_SKB_ZEROCOPY])])
75e93287
FL		 712 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash],
713 [OVS_DEFINE([HAVE_L4_RXHASH])])
5cce04b6 714 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable])
97894370 715 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop])
a27c454e 716 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_vlan_pop])
97894370 717 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push])
c6e13fcc 718 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash_if_not_l4])
ea3acd7a 719 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_postpush_rcsum])
73daf51a 720 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [lco_csum])
d3c313c1 721 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_nfct])
0ace0a26 722 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_put_zero])
4aa13c0c 723
e3438006 724 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool],
4aa13c0c 725 [OVS_DEFINE([HAVE_BOOL_TYPE])])
e3438006 726 OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum],
e215ebca 727 [OVS_DEFINE([HAVE_CSUM_TYPES])])
8dbe1f9f
PS		 728 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum],
729 [OVS_DEFINE([HAVE_CSUM_TYPES])])
4aa13c0c 730
e3438006
BP		 731 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4])
732 OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold])
4aa13c0c 733
0d03e51c 734 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk])
1dba1690 735 OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy])
0d03e51c 736
114fce23
SG		 737 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners])
738 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset])
14002a59 739 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops])
6233a1bd
TG		 740 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock],
741 [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])])
c623ba49 742 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse])
13dd4a97
JS		 743 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family],
744 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])])
0643a78b
PS		 745 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/genetlink.h],
746 [genl_notify], [net],
747 [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_NET])])
748
13dd4a97
JS		 749
750 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h],
751 [genl_multicast_group], [id])
fdce83a3 752 OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr])
13dd4a97 753
cc1d0dea 754 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register])
e23775f2 755 OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads])
8abaa53c 756 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH])
e23775f2 757 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk])
2d3ef70b 758 OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash])
a94ebc39
JS		 759 OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst],
760 [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])])
213e1f54
JS		 761 OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock],
762 [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])])
763
91b37647 764 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_64bit])
e3438006 765 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16])
42d5dd95
TG		 766 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16])
767 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32])
768 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64])
dd693f9b 769 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr])
e3438006 770 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested])
0fcc086d 771 OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last])
6dbd98e6
SH		 772 OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err],
773 [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])])
15702dc9
JB		 774 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netlink.h],
775 [nla_parse], [netlink_ext_ack],
776 [OVS_DEFINE([HAVE_NETLINK_EXT_ACK])])
4aa13c0c 777
c4e976db
JG		 778 OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum])
779
e3438006 780 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD],
431488e6 781 [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])])
1f649f1c 782 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto])
17e3889f 783 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag])
e23775f2 784 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol])
5c3f23fe 785 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [skb_vlan_tagged])
ca6da1b1 786 OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [eth_type_vlan])
431488e6 787
aadd6ae9
JS		 788 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/dst_metadata.h],
789 [metadata_dst_alloc], [metadata_type])
790
09f27436
JG		 791 OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq])
792
3174a818
TG		 793 OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata],
794 [OVS_DEFINE([HAVE_VXLAN_METADATA])])
f6a0c895 795 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port],
13dd4a97
JS		 796 [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net],
797 [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])])
798 OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check])
e23775f2 799 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete])
06aeda48
PS		 800 OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [sk_buff.*udp_tunnel_handle_offloads],
801 [OVS_DEFINE([HAVE_UDP_TUNNEL_HANDLE_OFFLOAD_RET_SKB])])
d7e58913
PS		 802 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_sock_cfg],
803 [gro_receive])
e23775f2
PS		 804
805 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df],
f6a0c895
TG		 806 [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])])
807 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN],
808 [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])])
f285d3e7 809
b7ebebcd
PS		 810 OVS_GREP_IFELSE([$KSRC/include/net/sock.h], [sk_no_check_tx])
811 OVS_GREP_IFELSE([$KSRC/include/linux/udp.h], [no_check6_tx])
21a719d6
FL		 812 OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6],
813 [OVS_DEFINE([HAVE_RHEL6_PER_CPU])])
c970aa4e
PS		 814 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/protocol.h],
815 [udp_add_offload], [net],
816 [OVS_DEFINE([HAVE_UDP_ADD_OFFLOAD_TAKES_NET])])
802d12b6
GR		 817 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
818 [nf_defrag_ipv6_enable], [net],
819 [OVS_DEFINE([HAVE_DEFRAG_ENABLE_TAKES_NET])])
bef862bc
GR		 820 OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [family_list],
821 [OVS_DEFINE([HAVE_GENL_FAMILY_LIST])])
7f15e8dd
GR		 822 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
823 [needs_free_netdev],
824 [OVS_DEFINE([HAVE_NEEDS_FREE_NETDEV])])
14365643
GR		 825 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/vxlan.h], [vxlan_dev], [cfg],
826 [OVS_DEFINE([HAVE_VXLAN_DEV_CFG])])
ac8e3c6d 827 OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_helper.h],
35fc0638
GR		 828 [nf_conntrack_helper_put],
829 [OVS_DEFINE(HAVE_NF_CONNTRACK_HELPER_PUT)])
f90e29c9 830 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],[[[[:space:]]]SKB_GSO_UDP[[[:space:]]]],
ad283644 831 [OVS_DEFINE([HAVE_SKB_GSO_UDP])])
db1dcb23
DB		 832 OVS_GREP_IFELSE([$KSRC/include/net/dst.h],[DST_NOCACHE],
833 [OVS_DEFINE([HAVE_DST_NOCACHE])])
6b51641a
GR		 834 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_link_ops],
835 [extack],
836 [OVS_DEFINE([HAVE_EXT_ACK_IN_RTNL_LINKOPS])])
a5220693
GR		 837 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_ops],
838 [list],
839 [OVS_DEFINE([HAVE_LIST_IN_NF_HOOK_OPS])])
c0802634
EG		 840 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netfilter/nf_conntrack_common.h],
841 [IP_CT_UNTRACKED])
36d3520b
GR		 842 OVS_FIND_PARAM_IFELSE([$KSRC/include/linux/netdevice.h],
843 [netdev_master_upper_dev_link], [extack],
844 [OVS_DEFINE([HAVE_UPPER_DEV_LINK_EXTACK])])
a61fbfa4
GR		 845 OVS_GREP_IFELSE([$KSRC/include/linux/compiler_types.h],
846 [__LINUX_COMPILER_TYPES_H],
847 [OVS_DEFINE([HAVE_LINUX_COMPILER_TYPES_H])])
6deeb55a
AB		 848 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
849 [ktime_get_ts64],
850 [OVS_DEFINE([HAVE_KTIME_GET_TS64])])
b147f2e9
JB		 851 OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h],
852 [EXPORT_SYMBOL_GPL(peernet2id_alloc)],
853 [OVS_DEFINE([HAVE_PEERNET2ID_ALLOC])])
1cb57039
AZ		 854 OVS_GREP_IFELSE([$KSRC/include/linux/timekeeping.h],
855 [ktime_get_ns],
856 [OVS_DEFINE([HAVE_KTIME_GET_NS])])
b3e647ca
GR		 857 OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h],
858 frag_percpu_counter_batch[],
859 [OVS_DEFINE([HAVE_FRAG_PERCPU_COUNTER_BATCH])])
8e53509c
WT		 860 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
861 [null_compute_pseudo],
862 [OVS_DEFINE([HAVE_NULL_COMPUTE_PSEUDO])])
863 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
864 [__skb_checksum_convert],
865 [OVS_DEFINE([HAVE_SKB_CHECKSUM_CONVERT])])
866 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device],
867 [max_mtu],
868 [OVS_DEFINE([HAVE_NET_DEVICE_MAX_MTU])])
8e53509c
WT		 869 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ip6_tunnel.h], [__ip6_tnl_parm],
870 [erspan_ver],
871 [OVS_DEFINE([HAVE_IP6_TNL_PARM_ERSPAN_VER])])
872 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
873 [SKB_GSO_IPXIP6],
874 [OVS_DEFINE([HAVE_SKB_GSO_IPXIP6])])
875 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ipv6.h],
876 [ip6_make_flowlabel], [fl6],
877 [OVS_DEFINE([HAVE_IP6_MAKE_FLOWLABEL_FL6])])
878 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/ipv6.h], [netns_sysctl_ipv6],
879 [auto_flowlabels],
880 [OVS_DEFINE([HAVE_NETNS_SYSCTL_IPV6_AUTO_FLOWLABELS])])
881 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
882 [netif_keep_dst],
883 [OVS_DEFINE([HAVE_NETIF_KEEP_DST])])
884 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netdevice.h], [net_device_ops],
885 [ndo_get_iflink],
886 [OVS_DEFINE([HAVE_NDO_GET_IFLINK])])
887 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
888 [skb_set_inner_ipproto],
889 [OVS_DEFINE([HAVE_SKB_SET_INNER_IPPROTO])])
890 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
891 [tunnel_encap_types],
892 [OVS_DEFINE([HAVE_TUNNEL_ENCAP_TYPES])])
893 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
894 [IFLA_IPTUN_ENCAP_TYPE],
895 [OVS_DEFINE([HAVE_IFLA_IPTUN_ENCAP_TYPE])])
896 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
897 [IFLA_IPTUN_COLLECT_METADATA],
898 [OVS_DEFINE([HAVE_IFLA_IPTUN_COLLECT_METADATA])])
e1ededf4
GR		 899 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
900 [IFLA_GRE_ENCAP_DPORT])
901 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
902 [IFLA_GRE_COLLECT_METADATA])
903 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
904 [IFLA_GRE_IGNORE_DF])
905 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
906 [IFLA_GRE_FWMARK])
907 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
908 [IFLA_GRE_ERSPAN_INDEX])
909 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
910 [IFLA_GRE_ERSPAN_HWID])
436d36db
GR		 911 OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_tunnel.h],
912 [IFLA_IPTUN_FWMARK])
10f24236
GR		 913 OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/skbuff.h], [sk_buff],
914 [csum_valid],
915 [OVS_DEFINE([HAVE_SKBUFF_CSUM_VALID])])
916 OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h],
917 [skb_checksum_simple_validate])
44a629b5
GR		 918 OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
919 [void.*ndo_get_stats64],
920 [OVS_DEFINE([HAVE_VOID_NDO_GET_STATS64])])
7f63d830
YS		 921 OVS_GREP_IFELSE([$KSRC/include/linux/timer.h], [init_timer_deferrable],
922 [OVS_DEFINE([HAVE_INIT_TIMER_DEFERRABLE])])
3f3b76f9
GR		 923 OVS_FIND_PARAM_IFELSE([$KSRC/include/net/ip_tunnels.h],
924 [ip_tunnel_info_opts_set], [flags],
925 [OVS_DEFINE([HAVE_IP_TUNNEL_INFO_OPTS_SET_FLAGS])])
4a90b277
GR		 926 OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags],
927 [rnd],
928 [OVS_DEFINE([HAVE_INET_FRAGS_RND])])
21a719d6 929
22bcc0e7
JG		 930 if cmp -s datapath/linux/kcompat.h.new \
931 datapath/linux/kcompat.h >/dev/null 2>&1; then
932 rm datapath/linux/kcompat.h.new
064af421 933 else
22bcc0e7 934 mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h
064af421
BP		 935 fi
936])
937
f6eb6b20 938dnl Checks for net/if_dl.h.
d30e714c 939dnl
d23fa2ed
YT		 940dnl (We use this as a proxy for checking whether we're building on FreeBSD
941dnl or NetBSD.)
9360d9b7
EM		 942AC_DEFUN([OVS_CHECK_IF_DL],
943 [AC_CHECK_HEADER([net/if_dl.h],
944 [HAVE_IF_DL=yes],
945 [HAVE_IF_DL=no])
946 AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes])
947 if test "$HAVE_IF_DL" = yes; then
948 AC_DEFINE([HAVE_IF_DL], [1],
949 [Define to 1 if net/if_dl.h is available.])
d30e714c 950
d23fa2ed 951 # On these platforms we use libpcap to access network devices.
d30e714c 952 AC_SEARCH_LIBS([pcap_open_live], [pcap])
9360d9b7
EM		 953 fi])
954
e50097d2
BP		 955dnl Checks for buggy strtok_r.
956dnl
957dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling
958dnl with optimization that can cause segfaults:
959dnl
960dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
961AC_DEFUN([OVS_CHECK_STRTOK_R],
962 [AC_CACHE_CHECK(
963 [whether strtok_r macro segfaults on some inputs],
964 [ovs_cv_strtok_r_bug],
965 [AC_RUN_IFELSE(
966 [AC_LANG_PROGRAM([#include <stdio.h>
967 #include <string.h>
968 ],
416e7132
BP		 969 [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
970 /* Assume bug is present, because relatively minor
971 changes in compiler settings (e.g. optimization
972 level) can make it crop up. */
973 return 1;
974 #else
975 char string[] = ":::";
e50097d2
BP		 976 char *save_ptr = (char *) 0xc0ffee;
977 char *token1, *token2;
978 token1 = strtok_r(string, ":", &save_ptr);
979 token2 = strtok_r(NULL, ":", &save_ptr);
5819a7cd 980 freopen ("/dev/null", "w", stdout);
e50097d2
BP		 981 printf ("%s %s\n", token1, token2);
982 return 0;
416e7132 983 #endif
e50097d2
BP		 984 ]])],
985 [ovs_cv_strtok_r_bug=no],
986 [ovs_cv_strtok_r_bug=yes],
987 [ovs_cv_strtok_r_bug=yes])])
988 if test $ovs_cv_strtok_r_bug = yes; then
989 AC_DEFINE([HAVE_STRTOK_R_BUG], [1],
990 [Define if strtok_r macro segfaults on some inputs])
991 fi
992])
993
064af421
BP		 994dnl ----------------------------------------------------------------------
995dnl These macros are from GNU PSPP, with the following original license:
996dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
997dnl This file is free software; the Free Software Foundation
998dnl gives unlimited permission to copy and/or distribute it,
999dnl with or without modifications, as long as this notice is preserved.
1000
50194820 1001AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl
726af752 1002 m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-= ], [__])])dnl
064af421
BP		 1003 AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name],
1004 [ovs_save_CFLAGS="$CFLAGS"
50194820
BP		 1005 dnl Include -Werror in the compiler options, because without -Werror
1006 dnl clang's GCC-compatible compiler driver does not return a failure
1007 dnl exit status even though it complains about options it does not
1008 dnl understand.
c2deac54
YT		 1009 dnl
1010 dnl Also, check stderr as gcc exits with status 0 for options
1011 dnl rejected at getopt level.
1012 dnl % touch /tmp/a.c
1013 dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $?
1014 dnl gcc: unrecognized option '-Qunused-arguments'
1015 dnl 0
1016 dnl %
4c1e8cb9
BP		 1017 dnl
1018 dnl In addition, GCC does not complain about a -Wno-<foo> option that
1019 dnl it does not understand, unless it has another error to report, so
1020 dnl instead of testing for -Wno-<foo>, test for the positive version.
1021 CFLAGS="$CFLAGS $WERROR m4_bpatsubst([$1], [-Wno-], [-W])"
37f4615e
BP		 1022 AC_COMPILE_IFELSE(
1023 [AC_LANG_SOURCE([int x;])],
1024 [if test -s conftest.err && grep "unrecognized option" conftest.err
1025 then
1026 ovs_cv_name[]=no
1027 else
1028 ovs_cv_name[]=yes
1029 fi],
1030 [ovs_cv_name[]=no])
064af421
BP		 1031 CFLAGS="$ovs_save_CFLAGS"])
1032 if test $ovs_cv_name = yes; then
83f6c050 1033 m4_if([$2], [], [:], [$2])
064af421
BP		 1034 else
1035 m4_if([$3], [], [:], [$3])
1036 fi
1037])
1038
50194820
BP		 1039dnl OVS_CHECK_WERROR
1040dnl
1041dnl Check whether the C compiler accepts -Werror.
1042dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string.
1043AC_DEFUN([OVS_CHECK_WERROR],
1044 [WERROR=
1045 _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])])
1046
1047dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
1048dnl Check whether the given C compiler OPTION is accepted.
1049dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
1050AC_DEFUN([OVS_CHECK_CC_OPTION],
1051 [AC_REQUIRE([OVS_CHECK_WERROR])
1052 _OVS_CHECK_CC_OPTION([$1], [$2], [$3])])
1053
064af421
BP		 1054dnl OVS_ENABLE_OPTION([OPTION])
1055dnl Check whether the given C compiler OPTION is accepted.
d161c099 1056dnl If so, add it to WARNING_FLAGS.
064af421
BP		 1057dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement])
1058AC_DEFUN([OVS_ENABLE_OPTION],
d161c099
BP		 1059 [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"])
1060 AC_SUBST([WARNING_FLAGS])])
c72e245a
BP		 1061
1062dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL])
1063dnl Check whether the given C compiler OPTION is accepted.
1064dnl If so, enable the given Automake CONDITIONAL.
1065
1066dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED])
1067AC_DEFUN([OVS_CONDITIONAL_CC_OPTION],
1068 [OVS_CHECK_CC_OPTION(
1069 [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no])
1070 AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])])
064af421 1071dnl ----------------------------------------------------------------------
ed2d4f6a
BP		 1072
1073dnl Check for too-old XenServer.
1074AC_DEFUN([OVS_CHECK_XENSERVER_VERSION],
1075 [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion],
1076 [if test -e /etc/redhat-release; then
1077 ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release`
1078 fi
1079 if test -z "$ovs_cv_xsversion"; then
1080 ovs_cv_xsversion=none
1081 fi])
1082 case $ovs_cv_xsversion in
1083 none)
1084 ;;
1085
1086 [[1-9]][[0-9]]* | dnl XenServer 10 or later
1087 [[6-9]]* | dnl XenServer 6 or later
1088 5.[[7-9]]* | dnl XenServer 5.7 or later
1089 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later
1090 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later
1091 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later
1092 ;;
1093
1094 *)
1095 AC_MSG_ERROR([This appears to be XenServer $ovs_cv_xsversion, but only XenServer 5.6.100 or later is supported. (If you are really using a supported version of XenServer, you may override this error message by specifying 'ovs_cv_xsversion=5.6.100' on the "configure" command line.)])
1096 ;;
1097 esac])
29d935d6 1098
643c0c34
BP		 1099dnl OVS_CHECK_SPARSE_TARGET
1100dnl
1101dnl The "cgcc" script from "sparse" isn't very good at detecting the
1102dnl target for which the code is being built. This helps it out.
1103AC_DEFUN([OVS_CHECK_SPARSE_TARGET],
1104 [AC_CACHE_CHECK(
1105 [target hint for cgcc],
1106 [ac_cv_sparse_target],
1107 [AS_CASE([`$CC -dumpmachine 2>/dev/null`],
1108 [i?86-* | athlon-*], [ac_cv_sparse_target=x86],
1109 [x86_64-*], [ac_cv_sparse_target=x86_64],
1110 [ac_cv_sparse_target=other])])
1111 AS_CASE([$ac_cv_sparse_target],
1112 [x86], [SPARSEFLAGS= CGCCFLAGS=-target=i86],
1113 [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS=-target=x86_64],
1114 [SPARSEFLAGS= CGCCFLAGS=])
1115 AC_SUBST([SPARSEFLAGS])
1116 AC_SUBST([CGCCFLAGS])])
1117
32e96ab7
AZ		 1118dnl OVS_SPARSE_EXTRA_INCLUDES
1119dnl
1120dnl The cgcc script from "sparse" does not search gcc's default
1121dnl search path. Get the default search path from GCC and pass
1122dnl them to sparse.
1123AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES],
1124 AC_SUBST([SPARSE_EXTRA_INCLUDES],
1125 [`$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 ' ' `] ))
1126
29d935d6
BP		 1127dnl OVS_ENABLE_SPARSE
1128AC_DEFUN([OVS_ENABLE_SPARSE],
643c0c34 1129 [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET])
32e96ab7 1130 AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES])
372d58a4
BP		 1131 : ${SPARSE=sparse}
1132 AC_SUBST([SPARSE])
1133 AC_CONFIG_COMMANDS_PRE(
d4042a70
BP		 1134 [CC='$(if $(C:0=),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) $(SPARSE_WERROR) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')'])
1135
1136 AC_ARG_ENABLE(
1137 [sparse],
1138 [AC_HELP_STRING([--enable-sparse], [Run "sparse" by default])],
1139 [], [enable_sparse=no])
1140 AM_CONDITIONAL([ENABLE_SPARSE_BY_DEFAULT], [test $enable_sparse = yes])])
8a8cd0ac 1141
0eaaacac
FL		 1142dnl OVS_CTAGS_IDENTIFIERS
1143dnl
1144dnl ctags ignores symbols with extras identifiers. This builds a list of
1145dnl specially handled identifiers to be ignored.
1146AC_DEFUN([OVS_CTAGS_IDENTIFIERS],
1147 AC_SUBST([OVS_CTAGS_IDENTIFIERS_LIST],
c9990318 1148 [`printf %s '-I "'; sed -n 's/^#define \(OVS_[A-Z_]\+\)(\.\.\.)$/\1+/p' ${srcdir}/include/openvswitch/compiler.h | tr \\\n ' ' ; printf '"'`] ))
0eaaacac 1149
8a8cd0ac
BP		 1150dnl OVS_PTHREAD_SET_NAME
1151dnl
1152dnl This checks for three known variants of pthreads functions for setting
1153dnl the name of the current thread:
1154dnl
1155dnl glibc: int pthread_setname_np(pthread_t, const char *name);
1156dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg);
1157dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name);
1158dnl
1159dnl For glibc and FreeBSD, the arguments are just a thread and its name. For
1160dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to
1161dnl provide to it.
1162dnl
1163dnl This macro defines:
1164dnl
1165dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP
1166dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP
1167dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP
1168AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME],
1169 [AC_CHECK_FUNCS([pthread_set_name_np])
1170 if test $ac_cv_func_pthread_set_name_np != yes; then
1171 AC_CACHE_CHECK(
1172 [for pthread_setname_np() variant],
1173 [ovs_cv_pthread_setname_np],
1174 [AC_LINK_IFELSE(
a0903134 1175 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac 1176 ], [pthread_setname_np(pthread_self(), "name");])],
a0903134 1177 [ovs_cv_pthread_setname_np=glibc],
8a8cd0ac 1178 [AC_LINK_IFELSE(
a0903134 1179 [AC_LANG_PROGRAM([#include <pthread.h>
8a8cd0ac
BP		 1180], [pthread_setname_np(pthread_self(), "%s", "name");])],
1181 [ovs_cv_pthread_setname_np=netbsd],
a0903134 1182 [ovs_cv_pthread_setname_np=none])])])
8a8cd0ac
BP		 1183 case $ovs_cv_pthread_setname_np in # (
1184 glibc)
a0903134
YT		 1185 AC_DEFINE(
1186 [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1],
1187 [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).])
1188 ;; # (
8a8cd0ac 1189 netbsd)
a0903134
YT		 1190 AC_DEFINE(
1191 [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1],
1192 [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).])
1193 ;;
8a8cd0ac
BP		 1194 esac
1195 fi])
5020f5f0
BP		 1196
1197dnl OVS_CHECK_LINUX_HOST.
1198dnl
1199dnl Checks whether we're building for a Linux host, based on the presence of
1200dnl the __linux__ preprocessor symbol, and sets up an Automake conditional
1201dnl LINUX based on the result.
1202AC_DEFUN([OVS_CHECK_LINUX_HOST],
1203 [AC_CACHE_CHECK(
1204 [whether __linux__ is defined],
1205 [ovs_cv_linux],
1206 [AC_COMPILE_IFELSE(
1207 [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])],
1208 [ovs_cv_linux=true],
1209 [ovs_cv_linux=false])])
1210 AM_CONDITIONAL([LINUX], [$ovs_cv_linux])])
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