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064af421 BP |
1 | # -*- autoconf -*- |
2 | ||
27a79a44 | 3 | # Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 Nicira, Inc. |
064af421 | 4 | # |
a14bc59f BP |
5 | # Licensed under the Apache License, Version 2.0 (the "License"); |
6 | # you may not use this file except in compliance with the License. | |
7 | # You may obtain a copy of the License at: | |
064af421 | 8 | # |
a14bc59f BP |
9 | # http://www.apache.org/licenses/LICENSE-2.0 |
10 | # | |
11 | # Unless required by applicable law or agreed to in writing, software | |
12 | # distributed under the License is distributed on an "AS IS" BASIS, | |
13 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | # See the License for the specific language governing permissions and | |
15 | # limitations under the License. | |
0877a018 TG |
16 | # |
17 | m4_include([m4/compat.at]) | |
064af421 | 18 | |
c2b07021 BP |
19 | dnl Checks for --enable-coverage and updates CFLAGS and LDFLAGS appropriately. |
20 | AC_DEFUN([OVS_CHECK_COVERAGE], | |
21 | [AC_REQUIRE([AC_PROG_CC]) | |
22 | AC_ARG_ENABLE( | |
23 | [coverage], | |
2e22e1c7 | 24 | [AC_HELP_STRING([--enable-coverage], |
c2b07021 BP |
25 | [Enable gcov coverage tool.])], |
26 | [case "${enableval}" in | |
8faa5a21 | 27 | (yes) coverage=true ;; |
7c126fbb | 28 | (no) coverage=false ;; |
c2b07021 BP |
29 | (*) AC_MSG_ERROR([bad value ${enableval} for --enable-coverage]) ;; |
30 | esac], | |
7c126fbb | 31 | [coverage=false]) |
c2b07021 | 32 | if $coverage; then |
27a79a44 BP |
33 | # Autoconf by default puts "-g -O2" in CFLAGS. We need to remove the -O2 |
34 | # option for coverage to be useful. This does it without otherwise | |
35 | # interfering with anything that the user might have put there. | |
36 | old_CFLAGS=$CFLAGS | |
37 | CFLAGS= | |
38 | for option in $old_CFLAGS; do | |
39 | case $option in | |
40 | (-O2) ;; | |
41 | (*) CFLAGS="$CFLAGS $option" ;; | |
42 | esac | |
43 | done | |
44 | ||
45 | OVS_CFLAGS="$OVS_CFLAGS --coverage" | |
95626395 | 46 | OVS_LDFLAGS="$OVS_LDFLAGS --coverage" |
7c126fbb | 47 | fi]) |
c2b07021 | 48 | |
064af421 BP |
49 | dnl Checks for --enable-ndebug and defines NDEBUG if it is specified. |
50 | AC_DEFUN([OVS_CHECK_NDEBUG], | |
51 | [AC_ARG_ENABLE( | |
52 | [ndebug], | |
2e22e1c7 | 53 | [AC_HELP_STRING([--enable-ndebug], |
064af421 BP |
54 | [Disable debugging features for max performance])], |
55 | [case "${enableval}" in | |
56 | (yes) ndebug=true ;; | |
57 | (no) ndebug=false ;; | |
58 | (*) AC_MSG_ERROR([bad value ${enableval} for --enable-ndebug]) ;; | |
59 | esac], | |
60 | [ndebug=false]) | |
61 | AM_CONDITIONAL([NDEBUG], [test x$ndebug = xtrue])]) | |
62 | ||
361906b1 EJ |
63 | dnl Checks for ESX. |
64 | AC_DEFUN([OVS_CHECK_ESX], | |
65 | [AC_CHECK_HEADER([vmware.h], | |
66 | [ESX=yes], | |
67 | [ESX=no]) | |
68 | AM_CONDITIONAL([ESX], [test "$ESX" = yes]) | |
69 | if test "$ESX" = yes; then | |
70 | AC_DEFINE([ESX], [1], [Define to 1 if building on ESX.]) | |
71 | fi]) | |
72 | ||
db6964bb GS |
73 | dnl Checks for WINDOWS. |
74 | AC_DEFUN([OVS_CHECK_WIN32], | |
75 | [AC_CHECK_HEADER([windows.h], | |
76 | [WIN32=yes], | |
77 | [WIN32=no]) | |
78 | AM_CONDITIONAL([WIN32], [test "$WIN32" = yes]) | |
79 | if test "$WIN32" = yes; then | |
94887cf4 GS |
80 | AC_ARG_WITH([pthread], |
81 | [AS_HELP_STRING([--with-pthread=DIR], | |
82 | [root of the pthread-win32 directory])], | |
83 | [ | |
84 | case "$withval" in | |
85 | "" | y | ye | yes | n | no) | |
86 | AC_MSG_ERROR([Invalid --with-pthread value]) | |
87 | ;; | |
88 | *) | |
89 | PTHREAD_INCLUDES="-I$withval/include" | |
90 | PTHREAD_LDFLAGS="-L$withval/lib/x86" | |
91 | PTHREAD_LIBS="-lpthreadVC2" | |
92 | AC_SUBST([PTHREAD_INCLUDES]) | |
93 | AC_SUBST([PTHREAD_LDFLAGS]) | |
94 | AC_SUBST([PTHREAD_LIBS]) | |
95 | ;; | |
96 | esac | |
97 | ], [ | |
98 | AC_MSG_ERROR([pthread directory not specified]) | |
99 | ] | |
100 | ) | |
b0e1bce5 GS |
101 | AC_ARG_WITH([debug], |
102 | [AS_HELP_STRING([--with-debug], | |
103 | [Build without compiler optimizations])], | |
104 | [ | |
105 | MSVC_CFLAGS="-O0" | |
106 | AC_SUBST([MSVC_CFLAGS]) | |
107 | ], [ | |
108 | MSVC_CFLAGS="-O2" | |
109 | AC_SUBST([MSVC_CFLAGS]) | |
110 | ] | |
111 | ) | |
bd9d7025 | 112 | |
db6964bb | 113 | AC_DEFINE([WIN32], [1], [Define to 1 if building on WIN32.]) |
e42dfc72 AS |
114 | AH_BOTTOM([#ifdef WIN32 |
115 | #include "include/windows/windefs.h" | |
116 | #endif]) | |
db6964bb GS |
117 | fi]) |
118 | ||
bd9d7025 AS |
119 | dnl OVS_CHECK_WINDOWS |
120 | dnl | |
121 | dnl Configure Visual Studio solution build | |
122 | AC_DEFUN([OVS_CHECK_VISUAL_STUDIO_DDK], [ | |
123 | AC_ARG_WITH([vstudioddk], | |
124 | [AS_HELP_STRING([--with-vstudioddk=version_type], | |
125 | [Visual Studio DDK version type e.g. Win8.1 Release])], | |
126 | [ | |
127 | case "$withval" in | |
128 | "Win8.1 Release") ;; | |
129 | "Win8.1 Debug") ;; | |
130 | "Win8 Release") ;; | |
131 | "Win8 Debug") ;; | |
132 | *) AC_MSG_ERROR([No good Visual Studio configuration found]) ;; | |
133 | esac | |
134 | ||
135 | VSTUDIO_CONFIG=$withval | |
136 | ], [ | |
137 | VSTUDIO_CONFIG= | |
138 | ] | |
139 | ) | |
140 | ||
141 | AC_SUBST([VSTUDIO_CONFIG]) | |
142 | AC_DEFINE([VSTUDIO_DDK], [1], [System uses the Visual Studio DDK version module.]) | |
143 | AM_CONDITIONAL([VSTUDIO_DDK], [test -n "$VSTUDIO_CONFIG"]) | |
144 | ]) | |
145 | ||
064af421 BP |
146 | dnl Checks for Netlink support. |
147 | AC_DEFUN([OVS_CHECK_NETLINK], | |
148 | [AC_CHECK_HEADER([linux/netlink.h], | |
149 | [HAVE_NETLINK=yes], | |
150 | [HAVE_NETLINK=no], | |
151 | [#include <sys/socket.h> | |
064af421 BP |
152 | ]) |
153 | AM_CONDITIONAL([HAVE_NETLINK], [test "$HAVE_NETLINK" = yes]) | |
154 | if test "$HAVE_NETLINK" = yes; then | |
155 | AC_DEFINE([HAVE_NETLINK], [1], | |
156 | [Define to 1 if Netlink protocol is available.]) | |
157 | fi]) | |
158 | ||
f272ec73 | 159 | dnl Checks for OpenSSL. |
064af421 BP |
160 | AC_DEFUN([OVS_CHECK_OPENSSL], |
161 | [AC_ARG_ENABLE( | |
162 | [ssl], | |
f272ec73 | 163 | [AC_HELP_STRING([--disable-ssl], [Disable OpenSSL support])], |
064af421 BP |
164 | [case "${enableval}" in |
165 | (yes) ssl=true ;; | |
166 | (no) ssl=false ;; | |
167 | (*) AC_MSG_ERROR([bad value ${enableval} for --enable-ssl]) ;; | |
168 | esac], | |
f272ec73 | 169 | [ssl=check]) |
064af421 | 170 | |
f272ec73 | 171 | if test "$ssl" != false; then |
0f31bef5 | 172 | AX_CHECK_OPENSSL( |
48b9616a BP |
173 | [HAVE_OPENSSL=yes], |
174 | [HAVE_OPENSSL=no | |
f272ec73 | 175 | if test "$ssl" = check; then |
924c2434 | 176 | AC_MSG_WARN([Cannot find openssl: |
064af421 | 177 | |
48b9616a | 178 | $SSL_PKG_ERRORS |
064af421 | 179 | |
f272ec73 BP |
180 | OpenFlow connections over SSL will not be supported. |
181 | (You may use --disable-ssl to suppress this warning.)]) | |
182 | else | |
924c2434 | 183 | AC_MSG_ERROR([Cannot find openssl (use --disable-ssl to configure without SSL support)]) |
f272ec73 | 184 | fi]) |
869decd4 BP |
185 | else |
186 | HAVE_OPENSSL=no | |
064af421 | 187 | fi |
d27ce529 | 188 | AC_SUBST([HAVE_OPENSSL]) |
064af421 BP |
189 | AM_CONDITIONAL([HAVE_OPENSSL], [test "$HAVE_OPENSSL" = yes]) |
190 | if test "$HAVE_OPENSSL" = yes; then | |
191 | AC_DEFINE([HAVE_OPENSSL], [1], [Define to 1 if OpenSSL is installed.]) | |
192 | fi]) | |
193 | ||
064af421 BP |
194 | dnl Checks for libraries needed by lib/socket-util.c. |
195 | AC_DEFUN([OVS_CHECK_SOCKET_LIBS], | |
196 | [AC_CHECK_LIB([socket], [connect]) | |
c6e02a5c | 197 | AC_SEARCH_LIBS([gethostbyname], [resolv])]) |
064af421 BP |
198 | |
199 | dnl Checks for the directory in which to store the PKI. | |
200 | AC_DEFUN([OVS_CHECK_PKIDIR], | |
201 | [AC_ARG_WITH( | |
2e22e1c7 EJ |
202 | [pkidir], |
203 | AC_HELP_STRING([--with-pkidir=DIR], | |
14bd2d51 | 204 | [PKI hierarchy directory [[LOCALSTATEDIR/lib/openvswitch/pki]]]), |
064af421 | 205 | [PKIDIR=$withval], |
14bd2d51 | 206 | [PKIDIR='${localstatedir}/lib/openvswitch/pki']) |
064af421 BP |
207 | AC_SUBST([PKIDIR])]) |
208 | ||
209 | dnl Checks for the directory in which to store pidfiles. | |
210 | AC_DEFUN([OVS_CHECK_RUNDIR], | |
211 | [AC_ARG_WITH( | |
2e22e1c7 EJ |
212 | [rundir], |
213 | AC_HELP_STRING([--with-rundir=DIR], | |
bc391960 JP |
214 | [directory used for pidfiles |
215 | [[LOCALSTATEDIR/run/openvswitch]]]), | |
064af421 | 216 | [RUNDIR=$withval], |
bc391960 | 217 | [RUNDIR='${localstatedir}/run/openvswitch']) |
064af421 BP |
218 | AC_SUBST([RUNDIR])]) |
219 | ||
220 | dnl Checks for the directory in which to store logs. | |
221 | AC_DEFUN([OVS_CHECK_LOGDIR], | |
222 | [AC_ARG_WITH( | |
2e22e1c7 EJ |
223 | [logdir], |
224 | AC_HELP_STRING([--with-logdir=DIR], | |
064af421 BP |
225 | [directory used for logs [[LOCALSTATEDIR/log/PACKAGE]]]), |
226 | [LOGDIR=$withval], | |
227 | [LOGDIR='${localstatedir}/log/${PACKAGE}']) | |
228 | AC_SUBST([LOGDIR])]) | |
229 | ||
f973f2af BP |
230 | dnl Checks for the directory in which to store the Open vSwitch database. |
231 | AC_DEFUN([OVS_CHECK_DBDIR], | |
232 | [AC_ARG_WITH( | |
233 | [dbdir], | |
234 | AC_HELP_STRING([--with-dbdir=DIR], | |
235 | [directory used for conf.db [[SYSCONFDIR/PACKAGE]]]), | |
236 | [DBDIR=$withval], | |
237 | [DBDIR='${sysconfdir}/${PACKAGE}']) | |
238 | AC_SUBST([DBDIR])]) | |
239 | ||
92f75e60 | 240 | dnl Defines HAVE_BACKTRACE if backtrace() is found. |
0e6644c3 | 241 | AC_DEFUN([OVS_CHECK_BACKTRACE], |
3453ed24 YT |
242 | [AC_SEARCH_LIBS([backtrace], [execinfo ubacktrace], |
243 | [AC_DEFINE([HAVE_BACKTRACE], [1], | |
244 | [Define to 1 if you have backtrace(3).])])]) | |
0e6644c3 | 245 | |
9a6156bb AZ |
246 | dnl Defines HAVE_PERF_EVENT if linux/perf_event.h is found. |
247 | AC_DEFUN([OVS_CHECK_PERF_EVENT], | |
248 | [AC_CHECK_HEADERS([linux/perf_event.h])]) | |
249 | ||
064af421 | 250 | dnl Checks for valgrind/valgrind.h. |
2e22e1c7 | 251 | AC_DEFUN([OVS_CHECK_VALGRIND], |
064af421 BP |
252 | [AC_CHECK_HEADERS([valgrind/valgrind.h])]) |
253 | ||
3b135da3 BP |
254 | dnl Checks for Python 2.x, x >= 4. |
255 | AC_DEFUN([OVS_CHECK_PYTHON], | |
195b5c35 | 256 | [AC_CACHE_CHECK( |
3b135da3 BP |
257 | [for Python 2.x for x >= 4], |
258 | [ovs_cv_python], | |
259 | [if test -n "$PYTHON"; then | |
260 | ovs_cv_python=$PYTHON | |
261 | else | |
262 | ovs_cv_python=no | |
bd7fe4e9 | 263 | for binary in python python2.4 python2.5 python2.7; do |
3b135da3 BP |
264 | ovs_save_IFS=$IFS; IFS=$PATH_SEPARATOR |
265 | for dir in $PATH; do | |
266 | IFS=$ovs_save_IFS | |
267 | test -z "$dir" && dir=. | |
4a6ba437 | 268 | if test -x "$dir"/"$binary" && "$dir"/"$binary" -c 'import sys |
3b135da3 BP |
269 | if sys.hexversion >= 0x02040000 and sys.hexversion < 0x03000000: |
270 | sys.exit(0) | |
271 | else: | |
272 | sys.exit(1)'; then | |
273 | ovs_cv_python=$dir/$binary | |
274 | break 2 | |
275 | fi | |
276 | done | |
277 | done | |
278 | fi]) | |
05b3c97b | 279 | AC_SUBST([HAVE_PYTHON]) |
195b5c35 BP |
280 | AM_MISSING_PROG([PYTHON], [python]) |
281 | if test $ovs_cv_python != no; then | |
282 | PYTHON=$ovs_cv_python | |
05b3c97b BP |
283 | HAVE_PYTHON=yes |
284 | else | |
285 | HAVE_PYTHON=no | |
286 | fi | |
287 | AM_CONDITIONAL([HAVE_PYTHON], [test "$HAVE_PYTHON" = yes])]) | |
436f27dd | 288 | |
f8d739a9 BP |
289 | dnl Checks for dot. |
290 | AC_DEFUN([OVS_CHECK_DOT], | |
291 | [AC_CACHE_CHECK( | |
292 | [for dot], | |
293 | [ovs_cv_dot], | |
294 | [dnl "dot" writes -V output to stderr: | |
a5eef57e | 295 | if (dot -V) 2>&1 | grep '^dot - [[gG]]raphviz version' >/dev/null 2>&1; then |
f8d739a9 BP |
296 | ovs_cv_dot=yes |
297 | else | |
298 | ovs_cv_dot=no | |
f8d739a9 | 299 | fi]) |
7c9b0073 | 300 | AM_CONDITIONAL([HAVE_DOT], [test "$ovs_cv_dot" = yes])]) |
f8d739a9 | 301 | |
436f27dd AS |
302 | dnl Checks whether $PYTHON supports the module given as $1 |
303 | AC_DEFUN([OVS_CHECK_PYTHON_MODULE], | |
304 | [AC_REQUIRE([OVS_CHECK_PYTHON]) | |
305 | AC_CACHE_CHECK( | |
306 | [for $1 Python module], | |
307 | [ovs_cv_py_[]AS_TR_SH([$1])], | |
308 | [ovs_cv_py_[]AS_TR_SH([$1])=no | |
309 | if test $HAVE_PYTHON = yes; then | |
310 | AS_ECHO(["running $PYTHON -c 'import $1 | |
311 | import sys | |
1df624e6 | 312 | sys.exit(0)'..."]) >&AS_MESSAGE_LOG_FD 2>&1 |
436f27dd AS |
313 | if $PYTHON -c 'import $1 |
314 | import sys | |
1df624e6 | 315 | sys.exit(0)' >&AS_MESSAGE_LOG_FD 2>&1; then |
436f27dd AS |
316 | ovs_cv_py_[]AS_TR_SH([$1])=yes |
317 | fi | |
318 | fi])]) | |
319 | ||
9b4a5392 AA |
320 | dnl Checks for missing python modules at build time |
321 | AC_DEFUN([OVS_CHECK_PYTHON_COMPAT], | |
322 | [OVS_CHECK_PYTHON_MODULE([uuid]) | |
323 | if test $ovs_cv_py_uuid = yes; then | |
324 | INCLUDE_PYTHON_COMPAT=no | |
325 | else | |
326 | INCLUDE_PYTHON_COMPAT=yes | |
327 | fi | |
328 | AC_MSG_CHECKING([whether to add python/compat to PYTHONPATH]) | |
329 | AC_MSG_RESULT([$INCLUDE_PYTHON_COMPAT]) | |
330 | AM_CONDITIONAL([INCLUDE_PYTHON_COMPAT], [test $INCLUDE_PYTHON_COMPAT = yes])]) | |
331 | ||
0027492d BP |
332 | dnl Checks for groff. |
333 | AC_DEFUN([OVS_CHECK_GROFF], | |
334 | [AC_CACHE_CHECK( | |
335 | [for groff], | |
336 | [ovs_cv_groff], | |
337 | [if (groff -v) >/dev/null 2>&1; then | |
338 | ovs_cv_groff=yes | |
339 | else | |
340 | ovs_cv_groff=no | |
341 | fi]) | |
342 | AM_CONDITIONAL([HAVE_GROFF], [test "$ovs_cv_groff" = yes])]) | |
c22095a5 BP |
343 | |
344 | dnl Checks for thread-local storage support. | |
345 | dnl | |
346 | dnl Checks whether the compiler and linker support the C11 | |
347 | dnl thread_local macro from <threads.h>, and if so defines | |
348 | dnl HAVE_THREAD_LOCAL. If not, checks whether the compiler and linker | |
349 | dnl support the GCC __thread extension, and if so defines | |
350 | dnl HAVE___THREAD. | |
351 | AC_DEFUN([OVS_CHECK_TLS], | |
352 | [AC_CACHE_CHECK( | |
353 | [whether $CC has <threads.h> that supports thread_local], | |
354 | [ovs_cv_thread_local], | |
355 | [AC_LINK_IFELSE( | |
356 | [AC_LANG_PROGRAM([#include <threads.h> | |
357 | static thread_local int var;], [return var;])], | |
358 | [ovs_cv_thread_local=yes], | |
359 | [ovs_cv_thread_local=no])]) | |
360 | if test $ovs_cv_thread_local = yes; then | |
361 | AC_DEFINE([HAVE_THREAD_LOCAL], [1], | |
362 | [Define to 1 if the C compiler and linker supports the C11 | |
363 | thread_local matcro defined in <threads.h>.]) | |
364 | else | |
365 | AC_CACHE_CHECK( | |
366 | [whether $CC supports __thread], | |
367 | [ovs_cv___thread], | |
368 | [AC_LINK_IFELSE( | |
369 | [AC_LANG_PROGRAM([static __thread int var;], [return var;])], | |
370 | [ovs_cv___thread=yes], | |
371 | [ovs_cv___thread=no])]) | |
372 | if test $ovs_cv___thread = yes; then | |
373 | AC_DEFINE([HAVE___THREAD], [1], | |
374 | [Define to 1 if the C compiler and linker supports the | |
375 | GCC __thread extenions.]) | |
376 | fi | |
377 | fi]) | |
31a3fc6e | 378 | |
fd2e50cd JP |
379 | dnl OVS_CHECK_ATOMIC_LIBS |
380 | dnl | |
381 | dnl Check to see if -latomic is need for GCC atomic built-ins. | |
382 | AC_DEFUN([OVS_CHECK_ATOMIC_LIBS], | |
383 | [AC_SEARCH_LIBS([__atomic_load_8], [atomic])]) | |
384 | ||
15248032 BP |
385 | dnl OVS_CHECK_GCC4_ATOMICS |
386 | dnl | |
387 | dnl Checks whether the compiler and linker support GCC 4.0+ atomic built-ins. | |
388 | dnl A compile-time only check is not enough because the compiler defers | |
389 | dnl unimplemented built-ins to libgcc, which sometimes also lacks | |
390 | dnl implementations. | |
391 | AC_DEFUN([OVS_CHECK_GCC4_ATOMICS], | |
392 | [AC_CACHE_CHECK( | |
393 | [whether $CC supports GCC 4.0+ atomic built-ins], | |
394 | [ovs_cv_gcc4_atomics], | |
395 | [AC_LINK_IFELSE( | |
396 | [AC_LANG_PROGRAM([[#include <stdlib.h> | |
397 | ||
398 | #define ovs_assert(expr) if (!(expr)) abort(); | |
399 | #define TEST_ATOMIC_TYPE(TYPE) \ | |
400 | { \ | |
401 | TYPE x = 1; \ | |
402 | TYPE orig; \ | |
403 | \ | |
404 | __sync_synchronize(); \ | |
405 | ovs_assert(x == 1); \ | |
406 | \ | |
407 | __sync_synchronize(); \ | |
408 | x = 3; \ | |
409 | __sync_synchronize(); \ | |
410 | ovs_assert(x == 3); \ | |
411 | \ | |
412 | orig = __sync_fetch_and_add(&x, 1); \ | |
413 | ovs_assert(orig == 3); \ | |
414 | __sync_synchronize(); \ | |
415 | ovs_assert(x == 4); \ | |
416 | \ | |
417 | orig = __sync_fetch_and_sub(&x, 2); \ | |
418 | ovs_assert(orig == 4); \ | |
419 | __sync_synchronize(); \ | |
420 | ovs_assert(x == 2); \ | |
421 | \ | |
422 | orig = __sync_fetch_and_or(&x, 6); \ | |
423 | ovs_assert(orig == 2); \ | |
424 | __sync_synchronize(); \ | |
425 | ovs_assert(x == 6); \ | |
426 | \ | |
427 | orig = __sync_fetch_and_and(&x, 10); \ | |
428 | ovs_assert(orig == 6); \ | |
429 | __sync_synchronize(); \ | |
430 | ovs_assert(x == 2); \ | |
431 | \ | |
432 | orig = __sync_fetch_and_xor(&x, 10); \ | |
433 | ovs_assert(orig == 2); \ | |
434 | __sync_synchronize(); \ | |
435 | ovs_assert(x == 8); \ | |
436 | }]], [dnl | |
437 | TEST_ATOMIC_TYPE(char); | |
438 | TEST_ATOMIC_TYPE(unsigned char); | |
439 | TEST_ATOMIC_TYPE(signed char); | |
440 | TEST_ATOMIC_TYPE(short); | |
441 | TEST_ATOMIC_TYPE(unsigned short); | |
442 | TEST_ATOMIC_TYPE(int); | |
443 | TEST_ATOMIC_TYPE(unsigned int); | |
444 | TEST_ATOMIC_TYPE(long int); | |
445 | TEST_ATOMIC_TYPE(unsigned long int); | |
446 | TEST_ATOMIC_TYPE(long long int); | |
447 | TEST_ATOMIC_TYPE(unsigned long long int); | |
448 | ])], | |
449 | [ovs_cv_gcc4_atomics=yes], | |
450 | [ovs_cv_gcc4_atomics=no])]) | |
451 | if test $ovs_cv_gcc4_atomics = yes; then | |
452 | AC_DEFINE([HAVE_GCC4_ATOMICS], [1], | |
453 | [Define to 1 if the C compiler and linker supports the GCC 4.0+ | |
454 | atomic built-ins.]) | |
455 | fi]) | |
456 | ||
31a3fc6e BP |
457 | dnl OVS_CHECK_ATOMIC_ALWAYS_LOCK_FREE(SIZE) |
458 | dnl | |
459 | dnl Checks __atomic_always_lock_free(SIZE, 0) | |
460 | AC_DEFUN([OVS_CHECK_ATOMIC_ALWAYS_LOCK_FREE], | |
461 | [AC_CACHE_CHECK( | |
462 | [value of __atomic_always_lock_free($1)], | |
463 | [ovs_cv_atomic_always_lock_free_$1], | |
464 | [AC_COMPUTE_INT( | |
465 | [ovs_cv_atomic_always_lock_free_$1], | |
466 | [__atomic_always_lock_free($1, 0)], | |
467 | [], | |
468 | [ovs_cv_atomic_always_lock_free_$1=unsupported])]) | |
469 | if test ovs_cv_atomic_always_lock_free_$1 != unsupported; then | |
470 | AC_DEFINE_UNQUOTED( | |
471 | [ATOMIC_ALWAYS_LOCK_FREE_$1B], | |
472 | [$ovs_cv_atomic_always_lock_free_$1], | |
473 | [If the C compiler is GCC 4.7 or later, define to the return value of | |
474 | __atomic_always_lock_free($1, 0). If the C compiler is not GCC or is | |
475 | an older version of GCC, the value does not matter.]) | |
476 | fi]) | |
97eba8fc BP |
477 | |
478 | dnl OVS_CHECK_POSIX_AIO | |
479 | AC_DEFUN([OVS_CHECK_POSIX_AIO], | |
480 | [AC_SEARCH_LIBS([aio_write], [rt]) | |
481 | AM_CONDITIONAL([HAVE_POSIX_AIO], [test "$ac_cv_search_aio_write" != no])]) | |
ed1be787 BP |
482 | |
483 | dnl OVS_CHECK_INCLUDE_NEXT | |
484 | AC_DEFUN([OVS_CHECK_INCLUDE_NEXT], | |
485 | [AC_REQUIRE([gl_CHECK_NEXT_HEADERS]) | |
486 | gl_CHECK_NEXT_HEADERS([$1])]) | |
aa8ea223 DDP |
487 | |
488 | dnl OVS_CHECK_PRAGMA_MESSAGE | |
489 | AC_DEFUN([OVS_CHECK_PRAGMA_MESSAGE], | |
490 | [AC_COMPILE_IFELSE([AC_LANG_PROGRAM( | |
491 | [[_Pragma("message(\"Checking for pragma message\")") | |
492 | ]])], | |
493 | [AC_DEFINE(HAVE_PRAGMA_MESSAGE,1,[Define if compiler supports #pragma | |
494 | message directive])]) | |
495 | ]) |