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1 | # -*- autoconf -*- | |
2 | ||
3 | # Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 Nicira, Inc. | |
4 | # | |
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: | |
8 | # | |
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. | |
16 | ||
17 | dnl OVS_ENABLE_WERROR | |
18 | AC_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$enable_Werror" = Xyes; then | |
25 | OVS_CFLAGS="$OVS_CFLAGS -Werror" | |
26 | fi])]) | |
27 | ||
28 | dnl OVS_CHECK_LINUX | |
29 | dnl | |
30 | dnl Configure linux kernel source tree | |
31 | AC_DEFUN([OVS_CHECK_LINUX], [ | |
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 | |
38 | (usually figured out automatically from build | |
39 | directory)])]) | |
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=$with_l26_source | |
59 | AC_MSG_WARN([--with-l26-source is deprecated, please use --with-linux-source instead]) | |
60 | else | |
61 | KSRC= | |
62 | fi | |
63 | elif test X"$with_linux_source" != X || test X"$with_l26_source" != X; then | |
64 | AC_MSG_ERROR([Linux source directory may not be specified without Linux build directory]) | |
65 | fi | |
66 | ||
67 | if test -n "$KBUILD"; then | |
68 | KBUILD=`eval echo "$KBUILD"` | |
69 | case $KBUILD in | |
70 | /*) ;; | |
71 | *) KBUILD=`pwd`/$KBUILD ;; | |
72 | esac | |
73 | ||
74 | # The build directory is what the user provided. | |
75 | # Make sure that it exists. | |
76 | AC_MSG_CHECKING([for Linux build directory]) | |
77 | if test -d "$KBUILD"; then | |
78 | AC_MSG_RESULT([$KBUILD]) | |
79 | AC_SUBST(KBUILD) | |
80 | else | |
81 | AC_MSG_RESULT([no]) | |
82 | AC_ERROR([source dir $KBUILD doesn't exist]) | |
83 | fi | |
84 | ||
85 | # Debian breaks kernel headers into "source" header and "build" headers. | |
86 | # We want the source headers, but $KBUILD gives us the "build" headers. | |
87 | # Use heuristics to find the source headers. | |
88 | AC_MSG_CHECKING([for Linux source directory]) | |
89 | if test -n "$KSRC"; then | |
90 | KSRC=`eval echo "$KSRC"` | |
91 | case $KSRC in | |
92 | /*) ;; | |
93 | *) KSRC=`pwd`/$KSRC ;; | |
94 | esac | |
95 | if test ! -e $KSRC/include/linux/kernel.h; then | |
96 | AC_MSG_ERROR([$KSRC is not a kernel source directory]) | |
97 | fi | |
98 | else | |
99 | KSRC=$KBUILD | |
100 | if test ! -e $KSRC/include/linux/kernel.h; then | |
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 | |
116 | fi | |
117 | if test ! -e "$KSRC"/include/linux/kernel.h; then | |
118 | AC_MSG_ERROR([cannot find source directory (please use --with-linux-source)]) | |
119 | fi | |
120 | fi | |
121 | AC_MSG_RESULT([$KSRC]) | |
122 | ||
123 | AC_MSG_CHECKING([for kernel version]) | |
124 | version=`sed -n 's/^VERSION = //p' "$KSRC/Makefile"` | |
125 | patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$KSRC/Makefile"` | |
126 | sublevel=`sed -n 's/^SUBLEVEL = //p' "$KSRC/Makefile"` | |
127 | if test X"$version" = X || test X"$patchlevel" = X; then | |
128 | AC_ERROR([cannot determine kernel version]) | |
129 | elif test X"$sublevel" = X; then | |
130 | kversion=$version.$patchlevel | |
131 | else | |
132 | kversion=$version.$patchlevel.$sublevel | |
133 | fi | |
134 | AC_MSG_RESULT([$kversion]) | |
135 | ||
136 | if test "$version" -ge 4; then | |
137 | if test "$version" = 4 && test "$patchlevel" -le 3; then | |
138 | : # Linux 4.x | |
139 | else | |
140 | AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 4.3.x is not supported (please refer to the FAQ for advice)]) | |
141 | fi | |
142 | elif test "$version" = 3 && test "$patchlevel" -ge 10; then | |
143 | : # Linux 3.x | |
144 | else | |
145 | AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version 3.10 or later is required]) | |
146 | fi | |
147 | if (test ! -e "$KBUILD"/include/linux/version.h && \ | |
148 | test ! -e "$KBUILD"/include/generated/uapi/linux/version.h)|| \ | |
149 | (test ! -e "$KBUILD"/include/linux/autoconf.h && \ | |
150 | test ! -e "$KBUILD"/include/generated/autoconf.h); then | |
151 | AC_MSG_ERROR([Linux kernel source in $KBUILD is not configured]) | |
152 | fi | |
153 | OVS_CHECK_LINUX_COMPAT | |
154 | fi | |
155 | AM_CONDITIONAL(LINUX_ENABLED, test -n "$KBUILD") | |
156 | ]) | |
157 | ||
158 | dnl OVS_CHECK_DPDK | |
159 | dnl | |
160 | dnl Configure DPDK source tree | |
161 | AC_DEFUN([OVS_CHECK_DPDK], [ | |
162 | AC_ARG_WITH([dpdk], | |
163 | [AC_HELP_STRING([--with-dpdk=/path/to/dpdk], | |
164 | [Specify the DPDK build directory])], | |
165 | [have_dpdk=true]) | |
166 | ||
167 | AC_MSG_CHECKING([whether dpdk datapath is enabled]) | |
168 | if test "$have_dpdk" != true || test "$with_dpdk" = no; then | |
169 | AC_MSG_RESULT([no]) | |
170 | DPDKLIB_FOUND=false | |
171 | else | |
172 | AC_MSG_RESULT([yes]) | |
173 | case "$with_dpdk" in | |
174 | yes) | |
175 | DPDK_AUTO_DISCOVER="true" | |
176 | DPDK_INCLUDE="/usr/local/include/dpdk -I/usr/include/dpdk" | |
177 | ;; | |
178 | *) | |
179 | DPDK_AUTO_DISCOVER="false" | |
180 | DPDK_INCLUDE="$with_dpdk/include" | |
181 | # If 'with_dpdk' is passed install directory, point to headers | |
182 | # installed in $DESTDIR/$prefix/include/dpdk | |
183 | AC_CHECK_FILE([$DPDK_INCLUDE/rte_config.h], [], | |
184 | [AC_CHECK_FILE([$DPDK_INCLUDE/dpdk/rte_config.h], | |
185 | [DPDK_INCLUDE=$DPDK_INCLUDE/dpdk], [])]) | |
186 | DPDK_LIB_DIR="$with_dpdk/lib" | |
187 | ;; | |
188 | esac | |
189 | ||
190 | DPDK_LIB="-ldpdk" | |
191 | DPDK_EXTRA_LIB="" | |
192 | ||
193 | ovs_save_CFLAGS="$CFLAGS" | |
194 | ovs_save_LDFLAGS="$LDFLAGS" | |
195 | CFLAGS="$CFLAGS -I$DPDK_INCLUDE" | |
196 | if test "$DPDK_AUTO_DISCOVER" = "false"; then | |
197 | LDFLAGS="$LDFLAGS -L${DPDK_LIB_DIR}" | |
198 | fi | |
199 | ||
200 | AC_COMPILE_IFELSE([ | |
201 | AC_LANG_PROGRAM( | |
202 | [ | |
203 | #include <rte_config.h> | |
204 | #if !RTE_LIBRTE_VHOST_USER | |
205 | #error | |
206 | #endif | |
207 | ], []) | |
208 | ], [], | |
209 | [AC_DEFINE([VHOST_CUSE], [1], [DPDK vhost-cuse support enabled, vhost-user disabled.]) | |
210 | DPDK_EXTRA_LIB="-lfuse"]) | |
211 | ||
212 | # On some systems we have to add -ldl to link with dpdk | |
213 | # | |
214 | # This code, at first, tries to link without -ldl (""), | |
215 | # then adds it and tries again. | |
216 | # Before each attempt the search cache must be unset, | |
217 | # otherwise autoconf will stick with the old result | |
218 | ||
219 | DPDKLIB_FOUND=false | |
220 | save_LIBS=$LIBS | |
221 | for extras in "" "-ldl"; do | |
222 | LIBS="$DPDK_LIB $extras $save_LIBS $DPDK_EXTRA_LIB -lnuma" | |
223 | AC_LINK_IFELSE( | |
224 | [AC_LANG_PROGRAM([#include <rte_config.h> | |
225 | #include <rte_eal.h>], | |
226 | [int rte_argc; char ** rte_argv; | |
227 | rte_eal_init(rte_argc, rte_argv);])], | |
228 | [DPDKLIB_FOUND=true]) | |
229 | if $DPDKLIB_FOUND; then | |
230 | break | |
231 | fi | |
232 | done | |
233 | ||
234 | # If linking unsuccessful | |
235 | if test "$DPDKLIB_FOUND" = "false" ; then | |
236 | if $DPDK_AUTO_DISCOVER; then | |
237 | 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]) | |
238 | else | |
239 | AC_MSG_ERROR([Could not find DPDK libraries in $DPDK_LIB_DIR]) | |
240 | fi | |
241 | fi | |
242 | CFLAGS="$ovs_save_CFLAGS" | |
243 | LDFLAGS="$ovs_save_LDFLAGS" | |
244 | if test "$DPDK_AUTO_DISCOVER" = "false"; then | |
245 | OVS_LDFLAGS="$OVS_LDFLAGS -L$DPDK_LIB_DIR" | |
246 | fi | |
247 | OVS_CFLAGS="$OVS_CFLAGS -I$DPDK_INCLUDE" | |
248 | OVS_ENABLE_OPTION([-mssse3]) | |
249 | ||
250 | # DPDK pmd drivers are not linked unless --whole-archive is used. | |
251 | # | |
252 | # This happens because the rest of the DPDK code doesn't use any symbol in | |
253 | # the pmd driver objects, and the drivers register themselves using an | |
254 | # __attribute__((constructor)) function. | |
255 | # | |
256 | # These options are specified inside a single -Wl directive to prevent | |
257 | # autotools from reordering them. | |
258 | DPDK_vswitchd_LDFLAGS=-Wl,--whole-archive,$DPDK_LIB,--no-whole-archive | |
259 | AC_SUBST([DPDK_vswitchd_LDFLAGS]) | |
260 | AC_DEFINE([DPDK_NETDEV], [1], [System uses the DPDK module.]) | |
261 | fi | |
262 | ||
263 | AM_CONDITIONAL([DPDK_NETDEV], test "$DPDKLIB_FOUND" = true) | |
264 | ]) | |
265 | ||
266 | dnl OVS_GREP_IFELSE(FILE, REGEX, [IF-MATCH], [IF-NO-MATCH]) | |
267 | dnl | |
268 | dnl Greps FILE for REGEX. If it matches, runs IF-MATCH, otherwise IF-NO-MATCH. | |
269 | dnl If IF-MATCH is empty then it defines to OVS_DEFINE(HAVE_<REGEX>), with | |
270 | dnl <REGEX> translated to uppercase. | |
271 | AC_DEFUN([OVS_GREP_IFELSE], [ | |
272 | AC_MSG_CHECKING([whether $2 matches in $1]) | |
273 | if test -f $1; then | |
274 | grep '$2' $1 >/dev/null 2>&1 | |
275 | status=$? | |
276 | case $status in | |
277 | 0) | |
278 | AC_MSG_RESULT([yes]) | |
279 | m4_if([$3], [], [OVS_DEFINE([HAVE_]m4_toupper([$2]))], [$3]) | |
280 | ;; | |
281 | 1) | |
282 | AC_MSG_RESULT([no]) | |
283 | $4 | |
284 | ;; | |
285 | *) | |
286 | AC_MSG_ERROR([grep exited with status $status]) | |
287 | ;; | |
288 | esac | |
289 | else | |
290 | AC_MSG_RESULT([file not found]) | |
291 | $4 | |
292 | fi | |
293 | ]) | |
294 | ||
295 | dnl OVS_FIND_FIELD_IFELSE(FILE, STRUCTURE, REGEX, [IF-MATCH], [IF-NO-MATCH]) | |
296 | dnl | |
297 | dnl Looks for STRUCTURE in FILE. If it is found, greps for REGEX within the | |
298 | dnl structure definition. If this is successful, runs IF-MATCH, otherwise | |
299 | dnl IF_NO_MATCH. If IF-MATCH is empty then it defines to | |
300 | dnl OVS_DEFINE(HAVE_<STRUCTURE>_WITH_<REGEX>), with <STRUCTURE> and <REGEX> | |
301 | dnl translated to uppercase. | |
302 | AC_DEFUN([OVS_FIND_FIELD_IFELSE], [ | |
303 | AC_MSG_CHECKING([whether $2 has member $3 in $1]) | |
304 | if test -f $1; then | |
305 | awk '/$2.{/,/^}/' $1 2>/dev/null | grep '$3' >/dev/null | |
306 | status=$? | |
307 | case $status in | |
308 | 0) | |
309 | AC_MSG_RESULT([yes]) | |
310 | m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4]) | |
311 | ;; | |
312 | 1) | |
313 | AC_MSG_RESULT([no]) | |
314 | $5 | |
315 | ;; | |
316 | *) | |
317 | AC_MSG_ERROR([grep exited with status $status]) | |
318 | ;; | |
319 | esac | |
320 | else | |
321 | AC_MSG_RESULT([file not found]) | |
322 | $5 | |
323 | fi | |
324 | ]) | |
325 | ||
326 | dnl OVS_FIND_PARAM_IFELSE(FILE, FUNCTION, REGEX, [IF-MATCH], [IF-NO-MATCH]) | |
327 | dnl | |
328 | dnl Looks for FUNCTION in FILE. If it is found, greps for REGEX within | |
329 | dnl the function signature starting from the line matching FUNCTION | |
330 | dnl and ending with the line containing the closing parenthesis. If | |
331 | dnl this is successful, runs IF-MATCH, otherwise IF_NO_MATCH. If | |
332 | dnl IF-MATCH is empty then it defines to | |
333 | dnl OVS_DEFINE(HAVE_<FUNCTION>_WITH_<REGEX>), with <FUNCTION> and | |
334 | dnl <REGEX> translated to uppercase. | |
335 | AC_DEFUN([OVS_FIND_PARAM_IFELSE], [ | |
336 | AC_MSG_CHECKING([whether $2 has parameter $3 in $1]) | |
337 | if test -f $1; then | |
338 | awk '/$2[[ \t\n]]*\(/,/\)/' $1 2>/dev/null | grep '$3' >/dev/null | |
339 | status=$? | |
340 | case $status in | |
341 | 0) | |
342 | AC_MSG_RESULT([yes]) | |
343 | m4_if([$4], [], [OVS_DEFINE([HAVE_]m4_toupper([$2])[_WITH_]m4_toupper([$3]))], [$4]) | |
344 | ;; | |
345 | 1) | |
346 | AC_MSG_RESULT([no]) | |
347 | $5 | |
348 | ;; | |
349 | *) | |
350 | AC_MSG_ERROR([grep exited with status $status]) | |
351 | ;; | |
352 | esac | |
353 | else | |
354 | AC_MSG_RESULT([file not found]) | |
355 | $5 | |
356 | fi | |
357 | ]) | |
358 | ||
359 | dnl OVS_DEFINE(NAME) | |
360 | dnl | |
361 | dnl Defines NAME to 1 in kcompat.h. | |
362 | AC_DEFUN([OVS_DEFINE], [ | |
363 | echo '#define $1 1' >> datapath/linux/kcompat.h.new | |
364 | ]) | |
365 | ||
366 | dnl OVS_CHECK_LINUX_COMPAT | |
367 | dnl | |
368 | dnl Runs various Autoconf checks on the Linux kernel source in | |
369 | dnl the directory in $KBUILD. | |
370 | AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [ | |
371 | rm -f datapath/linux/kcompat.h.new | |
372 | mkdir -p datapath/linux | |
373 | : > datapath/linux/kcompat.h.new | |
374 | ||
375 | echo '#include <linux/version.h> | |
376 | #ifndef RHEL_RELEASE_CODE | |
377 | #define RHEL_RELEASE_CODE 0 | |
378 | #define RHEL_RELEASE_VERSION(a, b) 0 | |
379 | #endif' >> datapath/linux/kcompat.h.new | |
380 | ||
381 | OVS_GREP_IFELSE([$KSRC/arch/x86/include/asm/checksum_32.h], [src_err,], | |
382 | [OVS_DEFINE([HAVE_CSUM_COPY_DBG])]) | |
383 | ||
384 | OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_dst_lookup.*net], | |
385 | [OVS_DEFINE([HAVE_IPV6_DST_LOOKUP_NET])]) | |
386 | OVS_GREP_IFELSE([$KSRC/include/net/addrconf.h], [ipv6_stub]) | |
387 | ||
388 | OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [ERR_CAST]) | |
389 | OVS_GREP_IFELSE([$KSRC/include/linux/err.h], [IS_ERR_OR_NULL]) | |
390 | ||
391 | OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [eth_hw_addr_random]) | |
392 | OVS_GREP_IFELSE([$KSRC/include/linux/etherdevice.h], [ether_addr_copy]) | |
393 | ||
394 | OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [IFLA_GENEVE_TOS]) | |
395 | OVS_GREP_IFELSE([$KSRC/include/uapi/linux/if_link.h], [rtnl_link_stats64]) | |
396 | OVS_GREP_IFELSE([$KSRC/include/linux/if_link.h], [rtnl_link_stats64]) | |
397 | OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_set_encap_proto]) | |
398 | OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_hwaccel_push_inside]) | |
399 | ||
400 | OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [ipv4_is_multicast]) | |
401 | OVS_GREP_IFELSE([$KSRC/include/linux/in.h], [proto_ports_offset]) | |
402 | OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*dst_entry], | |
403 | [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_DST_ENTRY])]) | |
404 | OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [__ip_select_ident.*net], | |
405 | [OVS_DEFINE([HAVE_IP_SELECT_IDENT_USING_NET])]) | |
406 | ||
407 | OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [inet_get_local_port_range.*net], | |
408 | [OVS_DEFINE([HAVE_INET_GET_LOCAL_PORT_RANGE_USING_NET])]) | |
409 | OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_defrag.*net], | |
410 | [OVS_DEFINE([HAVE_IP_DEFRAG_TAKES_NET])]) | |
411 | OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_do_fragment]) | |
412 | OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [ip_skb_dst_mtu]) | |
413 | ||
414 | OVS_GREP_IFELSE([$KSRC/include/net/ip.h], [IPSKB_FRAG_PMTU], | |
415 | [OVS_DEFINE([HAVE_CORRECT_MRU_HANDLING])]) | |
416 | OVS_GREP_IFELSE([$KSRC/include/net/ip_tunnels.h], [__ip_tunnel_change_mtu]) | |
417 | OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [hashfn.*const], | |
418 | [OVS_DEFINE([HAVE_INET_FRAGS_CONST])]) | |
419 | OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [last_in], | |
420 | [OVS_DEFINE([HAVE_INET_FRAGS_LAST_IN])]) | |
421 | OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_evicting]) | |
422 | OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags], | |
423 | [frags_work]) | |
424 | OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frags], | |
425 | [rwlock]) | |
426 | OVS_FIND_FIELD_IFELSE([$KSRC/include/net/inet_frag.h], [inet_frag_queue], | |
427 | [list_evictor]) | |
428 | OVS_GREP_IFELSE([$KSRC/include/net/inetpeer.h], [vif], | |
429 | [OVS_DEFINE([HAVE_INETPEER_VIF_SUPPORT])]) | |
430 | ||
431 | OVS_GREP_IFELSE([$KSRC/include/net/dst_metadata.h], [metadata_dst]) | |
432 | ||
433 | OVS_GREP_IFELSE([$KSRC/include/linux/net.h], [sock_create_kern.*net], | |
434 | [OVS_DEFINE([HAVE_SOCK_CREATE_KERN_NET])]) | |
435 | OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_disable_lro]) | |
436 | OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_stats]) | |
437 | OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_get_by_index_rcu]) | |
438 | OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [dev_recursion_level]) | |
439 | OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [__skb_gso_segment]) | |
440 | OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [can_checksum_protocol]) | |
441 | OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [ndo_get_iflink]) | |
442 | OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netdev_features_t]) | |
443 | dnl Ubuntu kernel 3.13 has defined this struct but not used for netdev->tstats. | |
444 | dnl So check type of tstats. | |
445 | OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [pcpu_sw_netstats.*tstats], | |
446 | [OVS_DEFINE([HAVE_PCPU_SW_NETSTATS])]) | |
447 | OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [netif_needs_gso.*net_device], | |
448 | [OVS_DEFINE([HAVE_NETIF_NEEDS_GSO_NETDEV])]) | |
449 | OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload]) | |
450 | OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [udp_offload.*uoff], | |
451 | [OVS_DEFINE([HAVE_UDP_OFFLOAD_ARG_UOFF])]) | |
452 | OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h], [gro_remcsum]) | |
453 | ||
454 | OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hook_state]) | |
455 | OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_register_net_hook]) | |
456 | OVS_GREP_IFELSE([$KSRC/include/linux/netfilter.h], [nf_hookfn.*nf_hook_ops], | |
457 | [OVS_DEFINE([HAVE_NF_HOOKFN_ARG_OPS])]) | |
458 | OVS_FIND_FIELD_IFELSE([$KSRC/include/linux/netfilter_ipv6.h], [nf_ipv6_ops], | |
459 | [fragment.*sock], [OVS_DEFINE([HAVE_NF_IPV6_OPS_FRAGMENT])]) | |
460 | ||
461 | OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h], | |
462 | [nf_ct_tmpl_alloc], [nf_conntrack_zone], | |
463 | [OVS_DEFINE([HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE])]) | |
464 | OVS_FIND_PARAM_IFELSE([$KSRC/include/net/netfilter/nf_conntrack.h], | |
465 | [nf_ct_get_tuplepr], [struct.net], | |
466 | [OVS_DEFINE([HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET])]) | |
467 | OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h], | |
468 | [nf_ct_zone_init]) | |
469 | OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h], | |
470 | [nf_connlabels_get]) | |
471 | OVS_GREP_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h], | |
472 | [nf_ct_frag6_consume_orig]) | |
473 | OVS_GREP_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h], | |
474 | [nf_ct_frag6_output]) | |
475 | OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_ct_nat_ext_add]) | |
476 | OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_nat.h], [nf_nat_alloc_null_binding]) | |
477 | OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_seqadj.h], [nf_ct_seq_adjust]) | |
478 | ||
479 | OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32]) | |
480 | OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max]) | |
481 | ||
482 | OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net]) | |
483 | OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type]) | |
484 | OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [rtnl_create_link.*src_net], | |
485 | [OVS_DEFINE([HAVE_RTNL_CREATE_LINK_SRC_NET])]) | |
486 | OVS_GREP_IFELSE([$KSRC/include/net/net_namespace.h], [possible_net_t]) | |
487 | ||
488 | OVS_GREP_IFELSE([$KSRC/include/linux/rcupdate.h], [rcu_read_lock_held], [], | |
489 | [OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], | |
490 | [rcu_read_lock_held])]) | |
491 | OVS_GREP_IFELSE([$KSRC/include/linux/rtnetlink.h], [lockdep_rtnl_is_held]) | |
492 | ||
493 | # Check for the proto_data_valid member in struct sk_buff. The [^@] | |
494 | # is necessary because some versions of this header remove the | |
495 | # member but retain the kerneldoc comment that describes it (which | |
496 | # starts with @). The brackets must be doubled because of m4 | |
497 | # quoting rules. | |
498 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [[[^@]]proto_data_valid], | |
499 | [OVS_DEFINE([HAVE_PROTO_DATA_VALID])]) | |
500 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_checksum_start_offset]) | |
501 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_protocol]) | |
502 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_mac_header]) | |
503 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [inner_network_header]) | |
504 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [kfree_skb_list]) | |
505 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_scrub_packet.*xnet], | |
506 | [OVS_DEFINE([HAVE_SKB_SCRUB_PACKET_XNET])]) | |
507 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [rxhash]) | |
508 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u16.*rxhash], | |
509 | [OVS_DEFINE([HAVE_U16_RXHASH])]) | |
510 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_dst(], | |
511 | [OVS_DEFINE([HAVE_SKB_DST_ACCESSOR_FUNCS])]) | |
512 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], | |
513 | [skb_copy_from_linear_data_offset]) | |
514 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], | |
515 | [skb_reset_tail_pointer]) | |
516 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_cow_head]) | |
517 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_warn_if_lro], | |
518 | [OVS_DEFINE([HAVE_SKB_WARN_LRO])]) | |
519 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [consume_skb]) | |
520 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_frag_page]) | |
521 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_has_frag_list]) | |
522 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [__skb_fill_page_desc]) | |
523 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_reset_mac_len]) | |
524 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_unclone]) | |
525 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_orphan_frags]) | |
526 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_get_hash(], | |
527 | [OVS_DEFINE([HAVE_SKB_GET_HASH])]) | |
528 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_clear_hash]) | |
529 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [int.skb_zerocopy(], | |
530 | [OVS_DEFINE([HAVE_SKB_ZEROCOPY])]) | |
531 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [u8.*l4_rxhash], | |
532 | [OVS_DEFINE([HAVE_L4_RXHASH])]) | |
533 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_ensure_writable]) | |
534 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_pop]) | |
535 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [skb_vlan_push]) | |
536 | ||
537 | OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [bool], | |
538 | [OVS_DEFINE([HAVE_BOOL_TYPE])]) | |
539 | OVS_GREP_IFELSE([$KSRC/include/linux/types.h], [__wsum], | |
540 | [OVS_DEFINE([HAVE_CSUM_TYPES])]) | |
541 | OVS_GREP_IFELSE([$KSRC/include/uapi/linux/types.h], [__wsum], | |
542 | [OVS_DEFINE([HAVE_CSUM_TYPES])]) | |
543 | ||
544 | OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_replace4]) | |
545 | OVS_GREP_IFELSE([$KSRC/include/net/checksum.h], [csum_unfold]) | |
546 | ||
547 | OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [dst_discard_sk]) | |
548 | OVS_GREP_IFELSE([$KSRC/include/net/dst.h], [__skb_dst_copy]) | |
549 | ||
550 | OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_has_listeners]) | |
551 | OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [mcgrp_offset]) | |
552 | OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [parallel_ops]) | |
553 | OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_new_unicast]) | |
554 | OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [netlink_has_listeners(net->genl_sock], | |
555 | [OVS_DEFINE([HAVE_GENL_HAS_LISTENERS_TAKES_NET])]) | |
556 | OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genlmsg_parse]) | |
557 | OVS_GREP_IFELSE([$KSRC/include/net/genetlink.h], [genl_notify.*family], | |
558 | [OVS_DEFINE([HAVE_GENL_NOTIFY_TAKES_FAMILY])]) | |
559 | ||
560 | OVS_FIND_FIELD_IFELSE([$KSRC/include/net/genetlink.h], | |
561 | [genl_multicast_group], [id]) | |
562 | OVS_GREP_IFELSE([$KSRC/include/net/geneve.h], [geneve_hdr]) | |
563 | ||
564 | OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_cisco_register]) | |
565 | OVS_GREP_IFELSE([$KSRC/include/net/gre.h], [gre_handle_offloads]) | |
566 | OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [IP6_FH_F_SKIP_RH]) | |
567 | OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [ip6_local_out_sk]) | |
568 | OVS_GREP_IFELSE([$KSRC/include/net/ipv6.h], [__ipv6_addr_jhash]) | |
569 | OVS_GREP_IFELSE([$KSRC/include/net/ip6_fib.h], [rt6i.*u.dst], | |
570 | [OVS_DEFINE([HAVE_RT6INFO_DST_UNION])]) | |
571 | OVS_GREP_IFELSE([$KSRC/include/net/ip6_route.h], [ip6_frag.*sock], | |
572 | [OVS_DEFINE([HAVE_IP_FRAGMENT_TAKES_SOCK])]) | |
573 | ||
574 | OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_get_be16]) | |
575 | OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be16]) | |
576 | OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be32]) | |
577 | OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_be64]) | |
578 | OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_put_in_addr]) | |
579 | OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_find_nested]) | |
580 | OVS_GREP_IFELSE([$KSRC/include/net/netlink.h], [nla_is_last]) | |
581 | OVS_GREP_IFELSE([$KSRC/include/linux/netlink.h], [void.*netlink_set_err], | |
582 | [OVS_DEFINE([HAVE_VOID_NETLINK_SET_ERR])]) | |
583 | ||
584 | OVS_GREP_IFELSE([$KSRC/include/net/sctp/checksum.h], [sctp_compute_cksum]) | |
585 | ||
586 | OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [ADD_ALL_VLANS_CMD], | |
587 | [OVS_DEFINE([HAVE_VLAN_BUG_WORKAROUND])]) | |
588 | OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_insert_tag_set_proto]) | |
589 | OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [__vlan_insert_tag]) | |
590 | OVS_GREP_IFELSE([$KSRC/include/linux/if_vlan.h], [vlan_get_protocol]) | |
591 | ||
592 | OVS_GREP_IFELSE([$KSRC/include/linux/u64_stats_sync.h], [u64_stats_fetch_begin_irq]) | |
593 | ||
594 | OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [struct vxlan_metadata], | |
595 | [OVS_DEFINE([HAVE_VXLAN_METADATA])]) | |
596 | OVS_GREP_IFELSE([$KSRC/include/net/vxlan.h], [VXLAN_HF_RCO]) | |
597 | OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_flow_src_port], | |
598 | [OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [inet_get_local_port_range(net], | |
599 | [OVS_DEFINE([HAVE_UDP_FLOW_SRC_PORT])])]) | |
600 | OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_v4_check]) | |
601 | OVS_GREP_IFELSE([$KSRC/include/net/udp.h], [udp_set_csum]) | |
602 | OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [udp_tunnel_gro_complete]) | |
603 | OVS_GREP_IFELSE([$KSRC/include/net/udp_tunnel.h], [ipv6_v6only], | |
604 | [OVS_DEFINE([HAVE_UDP_TUNNEL_IPV6])]) | |
605 | ||
606 | OVS_GREP_IFELSE([$KSRC/include/linux/skbuff.h], [ignore_df], | |
607 | [OVS_DEFINE([HAVE_IGNORE_DF_RENAME])]) | |
608 | OVS_GREP_IFELSE([$KSRC/include/uapi/linux/netdevice.h], [NET_NAME_UNKNOWN], | |
609 | [OVS_DEFINE([HAVE_NET_NAME_UNKNOWN])]) | |
610 | ||
611 | OVS_GREP_IFELSE([$KSRC/include/linux/utsrelease.h], [el6], | |
612 | [OVS_DEFINE([HAVE_RHEL6_PER_CPU])]) | |
613 | ||
614 | if cmp -s datapath/linux/kcompat.h.new \ | |
615 | datapath/linux/kcompat.h >/dev/null 2>&1; then | |
616 | rm datapath/linux/kcompat.h.new | |
617 | else | |
618 | mv datapath/linux/kcompat.h.new datapath/linux/kcompat.h | |
619 | fi | |
620 | ]) | |
621 | ||
622 | dnl Checks for net/if_packet.h. | |
623 | AC_DEFUN([OVS_CHECK_IF_PACKET], | |
624 | [AC_CHECK_HEADER([net/if_packet.h], | |
625 | [HAVE_IF_PACKET=yes], | |
626 | [HAVE_IF_PACKET=no]) | |
627 | AM_CONDITIONAL([HAVE_IF_PACKET], [test "$HAVE_IF_PACKET" = yes]) | |
628 | if test "$HAVE_IF_PACKET" = yes; then | |
629 | AC_DEFINE([HAVE_IF_PACKET], [1], | |
630 | [Define to 1 if net/if_packet.h is available.]) | |
631 | fi]) | |
632 | ||
633 | dnl Checks for net/if_dl.h. | |
634 | dnl | |
635 | dnl (We use this as a proxy for checking whether we're building on FreeBSD | |
636 | dnl or NetBSD.) | |
637 | AC_DEFUN([OVS_CHECK_IF_DL], | |
638 | [AC_CHECK_HEADER([net/if_dl.h], | |
639 | [HAVE_IF_DL=yes], | |
640 | [HAVE_IF_DL=no]) | |
641 | AM_CONDITIONAL([HAVE_IF_DL], [test "$HAVE_IF_DL" = yes]) | |
642 | if test "$HAVE_IF_DL" = yes; then | |
643 | AC_DEFINE([HAVE_IF_DL], [1], | |
644 | [Define to 1 if net/if_dl.h is available.]) | |
645 | ||
646 | # On these platforms we use libpcap to access network devices. | |
647 | AC_SEARCH_LIBS([pcap_open_live], [pcap]) | |
648 | fi]) | |
649 | ||
650 | dnl Checks for buggy strtok_r. | |
651 | dnl | |
652 | dnl Some versions of glibc 2.7 has a bug in strtok_r when compiling | |
653 | dnl with optimization that can cause segfaults: | |
654 | dnl | |
655 | dnl http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614. | |
656 | AC_DEFUN([OVS_CHECK_STRTOK_R], | |
657 | [AC_CACHE_CHECK( | |
658 | [whether strtok_r macro segfaults on some inputs], | |
659 | [ovs_cv_strtok_r_bug], | |
660 | [AC_RUN_IFELSE( | |
661 | [AC_LANG_PROGRAM([#include <stdio.h> | |
662 | #include <string.h> | |
663 | ], | |
664 | [[#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8 | |
665 | /* Assume bug is present, because relatively minor | |
666 | changes in compiler settings (e.g. optimization | |
667 | level) can make it crop up. */ | |
668 | return 1; | |
669 | #else | |
670 | char string[] = ":::"; | |
671 | char *save_ptr = (char *) 0xc0ffee; | |
672 | char *token1, *token2; | |
673 | token1 = strtok_r(string, ":", &save_ptr); | |
674 | token2 = strtok_r(NULL, ":", &save_ptr); | |
675 | freopen ("/dev/null", "w", stdout); | |
676 | printf ("%s %s\n", token1, token2); | |
677 | return 0; | |
678 | #endif | |
679 | ]])], | |
680 | [ovs_cv_strtok_r_bug=no], | |
681 | [ovs_cv_strtok_r_bug=yes], | |
682 | [ovs_cv_strtok_r_bug=yes])]) | |
683 | if test $ovs_cv_strtok_r_bug = yes; then | |
684 | AC_DEFINE([HAVE_STRTOK_R_BUG], [1], | |
685 | [Define if strtok_r macro segfaults on some inputs]) | |
686 | fi | |
687 | ]) | |
688 | ||
689 | dnl ---------------------------------------------------------------------- | |
690 | dnl These macros are from GNU PSPP, with the following original license: | |
691 | dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc. | |
692 | dnl This file is free software; the Free Software Foundation | |
693 | dnl gives unlimited permission to copy and/or distribute it, | |
694 | dnl with or without modifications, as long as this notice is preserved. | |
695 | ||
696 | AC_DEFUN([_OVS_CHECK_CC_OPTION], [dnl | |
697 | m4_define([ovs_cv_name], [ovs_cv_[]m4_translit([$1], [-=], [__])])dnl | |
698 | AC_CACHE_CHECK([whether $CC accepts $1], [ovs_cv_name], | |
699 | [ovs_save_CFLAGS="$CFLAGS" | |
700 | dnl Include -Werror in the compiler options, because without -Werror | |
701 | dnl clang's GCC-compatible compiler driver does not return a failure | |
702 | dnl exit status even though it complains about options it does not | |
703 | dnl understand. | |
704 | dnl | |
705 | dnl Also, check stderr as gcc exits with status 0 for options | |
706 | dnl rejected at getopt level. | |
707 | dnl % touch /tmp/a.c | |
708 | dnl % gcc -g -c -Werror -Qunused-arguments /tmp/a.c; echo $? | |
709 | dnl gcc: unrecognized option '-Qunused-arguments' | |
710 | dnl 0 | |
711 | dnl % | |
712 | CFLAGS="$CFLAGS $WERROR $1" | |
713 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [if test -s conftest.err && grep "unrecognized option" conftest.err; then ovs_cv_name[]=no; else ovs_cv_name[]=yes; fi], [ovs_cv_name[]=no]) | |
714 | CFLAGS="$ovs_save_CFLAGS"]) | |
715 | if test $ovs_cv_name = yes; then | |
716 | m4_if([$2], [], [:], [$2]) | |
717 | else | |
718 | m4_if([$3], [], [:], [$3]) | |
719 | fi | |
720 | ]) | |
721 | ||
722 | dnl OVS_CHECK_WERROR | |
723 | dnl | |
724 | dnl Check whether the C compiler accepts -Werror. | |
725 | dnl Sets $WERROR to "-Werror", if so, and otherwise to the empty string. | |
726 | AC_DEFUN([OVS_CHECK_WERROR], | |
727 | [WERROR= | |
728 | _OVS_CHECK_CC_OPTION([-Werror], [WERROR=-Werror])]) | |
729 | ||
730 | dnl OVS_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED]) | |
731 | dnl Check whether the given C compiler OPTION is accepted. | |
732 | dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED. | |
733 | AC_DEFUN([OVS_CHECK_CC_OPTION], | |
734 | [AC_REQUIRE([OVS_CHECK_WERROR]) | |
735 | _OVS_CHECK_CC_OPTION([$1], [$2], [$3])]) | |
736 | ||
737 | dnl OVS_ENABLE_OPTION([OPTION]) | |
738 | dnl Check whether the given C compiler OPTION is accepted. | |
739 | dnl If so, add it to WARNING_FLAGS. | |
740 | dnl Example: OVS_ENABLE_OPTION([-Wdeclaration-after-statement]) | |
741 | AC_DEFUN([OVS_ENABLE_OPTION], | |
742 | [OVS_CHECK_CC_OPTION([$1], [WARNING_FLAGS="$WARNING_FLAGS $1"]) | |
743 | AC_SUBST([WARNING_FLAGS])]) | |
744 | ||
745 | dnl OVS_CONDITIONAL_CC_OPTION([OPTION], [CONDITIONAL]) | |
746 | dnl Check whether the given C compiler OPTION is accepted. | |
747 | dnl If so, enable the given Automake CONDITIONAL. | |
748 | ||
749 | dnl Example: OVS_CONDITIONAL_CC_OPTION([-Wno-unused], [HAVE_WNO_UNUSED]) | |
750 | AC_DEFUN([OVS_CONDITIONAL_CC_OPTION], | |
751 | [OVS_CHECK_CC_OPTION( | |
752 | [$1], [ovs_have_cc_option=yes], [ovs_have_cc_option=no]) | |
753 | AM_CONDITIONAL([$2], [test $ovs_have_cc_option = yes])]) | |
754 | dnl ---------------------------------------------------------------------- | |
755 | ||
756 | dnl Check for too-old XenServer. | |
757 | AC_DEFUN([OVS_CHECK_XENSERVER_VERSION], | |
758 | [AC_CACHE_CHECK([XenServer release], [ovs_cv_xsversion], | |
759 | [if test -e /etc/redhat-release; then | |
760 | ovs_cv_xsversion=`sed -n 's/^XenServer DDK release \([[^-]]*\)-.*/\1/p' /etc/redhat-release` | |
761 | fi | |
762 | if test -z "$ovs_cv_xsversion"; then | |
763 | ovs_cv_xsversion=none | |
764 | fi]) | |
765 | case $ovs_cv_xsversion in | |
766 | none) | |
767 | ;; | |
768 | ||
769 | [[1-9]][[0-9]]* | dnl XenServer 10 or later | |
770 | [[6-9]]* | dnl XenServer 6 or later | |
771 | 5.[[7-9]]* | dnl XenServer 5.7 or later | |
772 | 5.6.[[1-9]][[0-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.1000 or later | |
773 | 5.6.[[2-9]][[0-9]][[0-9]]* | dnl XenServer 5.6.200 or later | |
774 | 5.6.1[[0-9]][[0-9]]) dnl Xenserver 5.6.100 or later | |
775 | ;; | |
776 | ||
777 | *) | |
778 | 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.)]) | |
779 | ;; | |
780 | esac]) | |
781 | ||
782 | dnl OVS_MAKE_HAS_IF([if-true], [if-false]) | |
783 | dnl | |
784 | dnl Checks whether make has the GNU make $(if condition,then,else) extension. | |
785 | dnl Runs 'if-true' if so, 'if-false' otherwise. | |
786 | AC_DEFUN([OVS_CHECK_MAKE_IF], | |
787 | [AC_CACHE_CHECK( | |
788 | [whether ${MAKE-make} has GNU make \$(if) extension], | |
789 | [ovs_cv_gnu_make_if], | |
790 | [cat <<'EOF' > conftest.mk | |
791 | conftest.out: | |
792 | echo $(if x,y,z) > conftest.out | |
793 | .PHONY: all | |
794 | EOF | |
795 | rm -f conftest.out | |
796 | AS_ECHO(["$as_me:$LINENO: invoking ${MAKE-make} -f conftest.mk all:"]) >&AS_MESSAGE_LOG_FD 2>&1 | |
797 | ${MAKE-make} -f conftest.mk conftest.out >&AS_MESSAGE_LOG_FD 2>&1 | |
798 | AS_ECHO(["$as_me:$LINENO: conftest.out contains:"]) >&AS_MESSAGE_LOG_FD 2>&1 | |
799 | cat conftest.out >&AS_MESSAGE_LOG_FD 2>&1 | |
800 | result=`cat conftest.out` | |
801 | rm -f conftest.mk conftest.out | |
802 | if test "X$result" = "Xy"; then | |
803 | ovs_cv_gnu_make_if=yes | |
804 | else | |
805 | ovs_cv_gnu_make_if=no | |
806 | fi])]) | |
807 | ||
808 | dnl OVS_CHECK_GNU_MAKE | |
809 | dnl | |
810 | dnl Checks whether make is GNU make (because Linux kernel Makefiles | |
811 | dnl only work with GNU make). | |
812 | AC_DEFUN([OVS_CHECK_GNU_MAKE], | |
813 | [AC_CACHE_CHECK( | |
814 | [whether ${MAKE-make} is GNU make], | |
815 | [ovs_cv_gnu_make], | |
816 | [rm -f conftest.out | |
817 | AS_ECHO(["$as_me:$LINENO: invoking ${MAKE-make} --version:"]) >&AS_MESSAGE_LOG_FD 2>&1 | |
818 | ${MAKE-make} --version >conftest.out 2>&1 | |
819 | cat conftest.out >&AS_MESSAGE_LOG_FD 2>&1 | |
820 | result=`cat conftest.out` | |
821 | rm -f conftest.mk conftest.out | |
822 | ||
823 | case $result in # ( | |
824 | GNU*) ovs_cv_gnu_make=yes ;; # ( | |
825 | *) ovs_cv_gnu_make=no ;; | |
826 | esac]) | |
827 | AM_CONDITIONAL([GNU_MAKE], [test $ovs_cv_gnu_make = yes])]) | |
828 | ||
829 | dnl OVS_CHECK_SPARSE_TARGET | |
830 | dnl | |
831 | dnl The "cgcc" script from "sparse" isn't very good at detecting the | |
832 | dnl target for which the code is being built. This helps it out. | |
833 | AC_DEFUN([OVS_CHECK_SPARSE_TARGET], | |
834 | [AC_CACHE_CHECK( | |
835 | [target hint for cgcc], | |
836 | [ac_cv_sparse_target], | |
837 | [AS_CASE([`$CC -dumpmachine 2>/dev/null`], | |
838 | [i?86-* | athlon-*], [ac_cv_sparse_target=x86], | |
839 | [x86_64-*], [ac_cv_sparse_target=x86_64], | |
840 | [ac_cv_sparse_target=other])]) | |
841 | AS_CASE([$ac_cv_sparse_target], | |
842 | [x86], [SPARSEFLAGS= CGCCFLAGS=-target=i86], | |
843 | [x86_64], [SPARSEFLAGS=-m64 CGCCFLAGS=-target=x86_64], | |
844 | [SPARSEFLAGS= CGCCFLAGS=]) | |
845 | AC_SUBST([SPARSEFLAGS]) | |
846 | AC_SUBST([CGCCFLAGS])]) | |
847 | ||
848 | dnl OVS_SPARSE_EXTRA_INCLUDES | |
849 | dnl | |
850 | dnl The cgcc script from "sparse" does not search gcc's default | |
851 | dnl search path. Get the default search path from GCC and pass | |
852 | dnl them to sparse. | |
853 | AC_DEFUN([OVS_SPARSE_EXTRA_INCLUDES], | |
854 | AC_SUBST([SPARSE_EXTRA_INCLUDES], | |
855 | [`$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 ' ' `] )) | |
856 | ||
857 | dnl OVS_ENABLE_SPARSE | |
858 | AC_DEFUN([OVS_ENABLE_SPARSE], | |
859 | [AC_REQUIRE([OVS_CHECK_SPARSE_TARGET]) | |
860 | AC_REQUIRE([OVS_CHECK_MAKE_IF]) | |
861 | AC_REQUIRE([OVS_SPARSE_EXTRA_INCLUDES]) | |
862 | : ${SPARSE=sparse} | |
863 | AC_SUBST([SPARSE]) | |
864 | AC_CONFIG_COMMANDS_PRE( | |
865 | [if test $ovs_cv_gnu_make_if = yes; then | |
866 | CC='$(if $(C),env REAL_CC="'"$CC"'" CHECK="$(SPARSE) -I $(top_srcdir)/include/sparse $(SPARSEFLAGS) $(SPARSE_EXTRA_INCLUDES) " cgcc $(CGCCFLAGS),'"$CC"')' | |
867 | fi])]) | |
868 | ||
869 | dnl OVS_PTHREAD_SET_NAME | |
870 | dnl | |
871 | dnl This checks for three known variants of pthreads functions for setting | |
872 | dnl the name of the current thread: | |
873 | dnl | |
874 | dnl glibc: int pthread_setname_np(pthread_t, const char *name); | |
875 | dnl NetBSD: int pthread_setname_np(pthread_t, const char *format, void *arg); | |
876 | dnl FreeBSD: int pthread_set_name_np(pthread_t, const char *name); | |
877 | dnl | |
878 | dnl For glibc and FreeBSD, the arguments are just a thread and its name. For | |
879 | dnl NetBSD, 'format' is a printf() format string and 'arg' is an argument to | |
880 | dnl provide to it. | |
881 | dnl | |
882 | dnl This macro defines: | |
883 | dnl | |
884 | dnl glibc: HAVE_GLIBC_PTHREAD_SETNAME_NP | |
885 | dnl NetBSD: HAVE_NETBSD_PTHREAD_SETNAME_NP | |
886 | dnl FreeBSD: HAVE_PTHREAD_SET_NAME_NP | |
887 | AC_DEFUN([OVS_CHECK_PTHREAD_SET_NAME], | |
888 | [AC_CHECK_FUNCS([pthread_set_name_np]) | |
889 | if test $ac_cv_func_pthread_set_name_np != yes; then | |
890 | AC_CACHE_CHECK( | |
891 | [for pthread_setname_np() variant], | |
892 | [ovs_cv_pthread_setname_np], | |
893 | [AC_LINK_IFELSE( | |
894 | [AC_LANG_PROGRAM([#include <pthread.h> | |
895 | ], [pthread_setname_np(pthread_self(), "name");])], | |
896 | [ovs_cv_pthread_setname_np=glibc], | |
897 | [AC_LINK_IFELSE( | |
898 | [AC_LANG_PROGRAM([#include <pthread.h> | |
899 | ], [pthread_setname_np(pthread_self(), "%s", "name");])], | |
900 | [ovs_cv_pthread_setname_np=netbsd], | |
901 | [ovs_cv_pthread_setname_np=none])])]) | |
902 | case $ovs_cv_pthread_setname_np in # ( | |
903 | glibc) | |
904 | AC_DEFINE( | |
905 | [HAVE_GLIBC_PTHREAD_SETNAME_NP], [1], | |
906 | [Define to 1 if pthread_setname_np() is available and takes 2 parameters (like glibc).]) | |
907 | ;; # ( | |
908 | netbsd) | |
909 | AC_DEFINE( | |
910 | [HAVE_NETBSD_PTHREAD_SETNAME_NP], [1], | |
911 | [Define to 1 if pthread_setname_np() is available and takes 3 parameters (like NetBSD).]) | |
912 | ;; | |
913 | esac | |
914 | fi]) | |
915 | ||
916 | dnl OVS_CHECK_LINUX_HOST. | |
917 | dnl | |
918 | dnl Checks whether we're building for a Linux host, based on the presence of | |
919 | dnl the __linux__ preprocessor symbol, and sets up an Automake conditional | |
920 | dnl LINUX based on the result. | |
921 | AC_DEFUN([OVS_CHECK_LINUX_HOST], | |
922 | [AC_CACHE_CHECK( | |
923 | [whether __linux__ is defined], | |
924 | [ovs_cv_linux], | |
925 | [AC_COMPILE_IFELSE( | |
926 | [AC_LANG_PROGRAM([enum { LINUX = __linux__};], [])], | |
927 | [ovs_cv_linux=true], | |
928 | [ovs_cv_linux=false])]) | |
929 | AM_CONDITIONAL([LINUX], [$ovs_cv_linux])]) |