3 # Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks.
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:
9 # http://www.apache.org/licenses/LICENSE-2.0
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.
17 dnl Checks for --enable-coverage and updates CFLAGS and LDFLAGS appropriately.
18 AC_DEFUN([OVS_CHECK_COVERAGE],
19 [AC_REQUIRE([AC_PROG_CC])
22 [AC_HELP_STRING([--enable-coverage],
23 [Enable gcov coverage tool.])],
24 [case "${enableval}" in
25 (lcov|yes) coverage=true ;;
26 (no) coverage=false ;;
27 (*) AC_MSG_ERROR([bad value ${enableval} for --enable-coverage]) ;;
31 CFLAGS="$CFLAGS -O0 --coverage"
32 LDFLAGS="$LDFLAGS --coverage"
35 dnl Checks for --enable-ndebug and defines NDEBUG if it is specified.
36 AC_DEFUN([OVS_CHECK_NDEBUG],
39 [AC_HELP_STRING([--enable-ndebug],
40 [Disable debugging features for max performance])],
41 [case "${enableval}" in
44 (*) AC_MSG_ERROR([bad value ${enableval} for --enable-ndebug]) ;;
47 AM_CONDITIONAL([NDEBUG], [test x$ndebug = xtrue])])
49 dnl Checks for struct rtnl_link_stats64.
51 dnl (OVS checks for this structure in both kernel and userspace headers. This
52 dnl is not redundant, because the kernel and userspace builds have completely
53 dnl different include paths. It is possible for the kernel to have this
54 dnl structure but not userspace, and vice versa.)
55 AC_DEFUN([OVS_CHECK_RTNL_LINK_STATS64],
56 [AC_REQUIRE([OVS_CHECK_NETLINK])
57 if test $HAVE_NETLINK = yes; then
59 [struct rtnl_link_stats64.tx_packets],
60 [AC_DEFINE([HAVE_RTNL_LINK_STATS64], [1],
61 [Define to 1 if <linux/if_link.h> defines
62 struct rtnl_link_stats64.])],
63 [], [#include <sys/socket.h> /* Provides sa_family_t. */
64 #include <linux/if_link.h>
68 dnl Checks for Netlink support.
69 AC_DEFUN([OVS_CHECK_NETLINK],
70 [AC_CHECK_HEADER([linux/netlink.h],
73 [#include <sys/socket.h>
74 #include <linux/types.h>
76 AM_CONDITIONAL([HAVE_NETLINK], [test "$HAVE_NETLINK" = yes])
77 if test "$HAVE_NETLINK" = yes; then
78 AC_DEFINE([HAVE_NETLINK], [1],
79 [Define to 1 if Netlink protocol is available.])
82 dnl Checks for OpenSSL.
83 AC_DEFUN([OVS_CHECK_OPENSSL],
86 [AC_HELP_STRING([--disable-ssl], [Disable OpenSSL support])],
87 [case "${enableval}" in
90 (*) AC_MSG_ERROR([bad value ${enableval} for --enable-ssl]) ;;
94 if test "$ssl" != false; then
95 dnl Make sure that pkg-config is installed.
96 m4_pattern_forbid([PKG_CHECK_MODULES])
97 PKG_CHECK_MODULES([SSL], [openssl],
100 if test "$ssl" = check; then
101 AC_MSG_WARN([Cannot find openssl:
105 OpenFlow connections over SSL will not be supported.
106 (You may use --disable-ssl to suppress this warning.)])
108 AC_MSG_ERROR([Cannot find openssl (use --disable-ssl to configure without SSL support)])
113 AC_SUBST([HAVE_OPENSSL])
114 AM_CONDITIONAL([HAVE_OPENSSL], [test "$HAVE_OPENSSL" = yes])
115 if test "$HAVE_OPENSSL" = yes; then
116 AC_DEFINE([HAVE_OPENSSL], [1], [Define to 1 if OpenSSL is installed.])
119 dnl Checks for libraries needed by lib/socket-util.c.
120 AC_DEFUN([OVS_CHECK_SOCKET_LIBS],
121 [AC_CHECK_LIB([socket], [connect])
122 AC_SEARCH_LIBS([gethostbyname], [resolv], [RESOLVER_LIBS=-lresolv])])
124 dnl Checks for the directory in which to store the PKI.
125 AC_DEFUN([OVS_CHECK_PKIDIR],
128 AC_HELP_STRING([--with-pkidir=DIR],
129 [PKI hierarchy directory [[DATADIR/openvswitch/pki]]]),
131 [PKIDIR='${pkgdatadir}/pki'])
134 dnl Checks for the directory in which to store pidfiles.
135 AC_DEFUN([OVS_CHECK_RUNDIR],
138 AC_HELP_STRING([--with-rundir=DIR],
139 [directory used for pidfiles
140 [[LOCALSTATEDIR/run/openvswitch]]]),
142 [RUNDIR='${localstatedir}/run/openvswitch'])
145 dnl Checks for the directory in which to store logs.
146 AC_DEFUN([OVS_CHECK_LOGDIR],
149 AC_HELP_STRING([--with-logdir=DIR],
150 [directory used for logs [[LOCALSTATEDIR/log/PACKAGE]]]),
152 [LOGDIR='${localstatedir}/log/${PACKAGE}'])
155 dnl Defines HAVE_BACKTRACE if backtrace() is declared in <execinfo.h>
156 dnl and exists in libc.
157 AC_DEFUN([OVS_CHECK_BACKTRACE],
158 [AC_CHECK_HEADER([execinfo.h], [AC_CHECK_FUNCS([backtrace])])])
160 dnl Checks for __malloc_hook, etc., supported by glibc.
161 AC_DEFUN([OVS_CHECK_MALLOC_HOOKS],
163 [whether libc supports hooks for malloc and related functions],
164 [ovs_cv_malloc_hooks],
169 [(void) __malloc_hook;
170 (void) __realloc_hook;
171 (void) __free_hook;])],
172 [ovs_cv_malloc_hooks=yes],
173 [ovs_cv_malloc_hooks=no])])
174 if test $ovs_cv_malloc_hooks = yes; then
175 AC_DEFINE([HAVE_MALLOC_HOOKS], [1],
176 [Define to 1 if you have __malloc_hook, __realloc_hook, and
177 __free_hook in <malloc.h>.])
180 dnl Checks for valgrind/valgrind.h.
181 AC_DEFUN([OVS_CHECK_VALGRIND],
182 [AC_CHECK_HEADERS([valgrind/valgrind.h])])
184 dnl Checks for Python 2.x, x >= 4.
185 AC_DEFUN([OVS_CHECK_PYTHON],
187 [for Python 2.x for x >= 4],
189 [if test -n "$PYTHON"; then
190 ovs_cv_python=$PYTHON
193 for binary in python python2.4 python2.5; do
194 ovs_save_IFS=$IFS; IFS=$PATH_SEPARATOR
197 test -z "$dir" && dir=.
198 if test -x $dir/$binary && $dir/$binary -c 'import sys
199 if sys.hexversion >= 0x02040000 and sys.hexversion < 0x03000000:
203 ovs_cv_python=$dir/$binary
209 AC_SUBST([HAVE_PYTHON])
210 AM_MISSING_PROG([PYTHON], [python])
211 if test $ovs_cv_python != no; then
212 PYTHON=$ovs_cv_python
217 AM_CONDITIONAL([HAVE_PYTHON], [test "$HAVE_PYTHON" = yes])])
220 AC_DEFUN([OVS_CHECK_DOT],
224 [dnl "dot" writes -V output to stderr:
225 if (dot -V) 2>&1 | grep '^dot - [[gG]]raphviz version' >/dev/null 2>&1; then
230 AM_CONDITIONAL([HAVE_DOT], [test "$ovs_cv_dot" = yes])])
232 dnl Checks for pyuic4.
233 AC_DEFUN([OVS_CHECK_PYUIC4],
237 [if (pyuic4 --version) >/dev/null 2>&1; then
242 AM_MISSING_PROG([PYUIC4], [pyuic4])
243 if test $ovs_cv_pyuic4 != no; then
244 PYUIC4=$ovs_cv_pyuic4
247 dnl Checks whether $PYTHON supports the module given as $1
248 AC_DEFUN([OVS_CHECK_PYTHON_MODULE],
249 [AC_REQUIRE([OVS_CHECK_PYTHON])
251 [for $1 Python module],
252 [ovs_cv_py_[]AS_TR_SH([$1])],
253 [ovs_cv_py_[]AS_TR_SH([$1])=no
254 if test $HAVE_PYTHON = yes; then
255 AS_ECHO(["running $PYTHON -c 'import $1
257 sys.exit(0)'..."]) >&AS_MESSAGE_LOG_FD 2>&1
258 if $PYTHON -c 'import $1
260 sys.exit(0)' >&AS_MESSAGE_LOG_FD 2>&1; then
261 ovs_cv_py_[]AS_TR_SH([$1])=yes
265 dnl Checks for Python modules needed by ovsdbmonitor.
266 AC_DEFUN([OVS_CHECK_OVSDBMONITOR],
267 [OVS_CHECK_PYTHON_MODULE([PySide.QtCore])
268 OVS_CHECK_PYTHON_MODULE([PyQt4.QtCore])
269 OVS_CHECK_PYTHON_MODULE([twisted.conch.ssh])
270 OVS_CHECK_PYTHON_MODULE([twisted.internet])
271 OVS_CHECK_PYTHON_MODULE([twisted.application])
272 OVS_CHECK_PYTHON_MODULE([json])
273 OVS_CHECK_PYTHON_MODULE([zope.interface])
274 if (test $ovs_cv_py_PySide_QtCore = yes \
275 || test $ovs_cv_py_PyQt4_QtCore = yes) \
276 && test $ovs_cv_py_twisted_conch_ssh = yes \
277 && test $ovs_cv_py_twisted_internet = yes \
278 && test $ovs_cv_py_twisted_application = yes \
279 && test $ovs_cv_py_json = yes \
280 && test $ovs_cv_py_zope_interface = yes; then
281 BUILD_OVSDBMONITOR=yes
283 BUILD_OVSDBMONITOR=no
285 AC_MSG_CHECKING([whether to build ovsdbmonitor])
286 AC_MSG_RESULT([$BUILD_OVSDBMONITOR])
287 AM_CONDITIONAL([BUILD_OVSDBMONITOR], [test $BUILD_OVSDBMONITOR = yes])])
289 # OVS_LINK2_IFELSE(SOURCE1, SOURCE2, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
290 # -------------------------------------------------------------
291 # Based on AC_LINK_IFELSE, but tries to link both SOURCE1 and SOURCE2
294 # This macro is borrowed from acinclude.m4 in GNU PSPP, which has the
297 # Copyright (C) 2005, 2006, 2007, 2009 Free Software Foundation, Inc.
298 # This file is free software; the Free Software Foundation
299 # gives unlimited permission to copy and/or distribute it,
300 # with or without modifications, as long as this notice is preserved.
302 m4_define([OVS_LINK2_IFELSE],
303 [m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])dnl
304 mv conftest.$ac_ext conftest1.$ac_ext
305 m4_ifvaln([$2], [AC_LANG_CONFTEST([$2])])dnl
306 mv conftest.$ac_ext conftest2.$ac_ext
307 rm -f conftest1.$ac_objext conftest2.$ac_objext conftest$ac_exeext
308 ovs_link2='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest1.$ac_ext conftest2.$ac_ext $LIBS >&5'
309 AS_IF([_AC_DO_STDERR($ovs_link2) && {
310 test -z "$ac_[]_AC_LANG_ABBREV[]_werror_flag" ||
311 test ! -s conftest.err
312 } && test -s conftest$ac_exeext && {
313 test "$cross_compiling" = yes ||
314 AS_TEST_X([conftest$ac_exeext])
317 [echo "$as_me: failed source file 1 of 2 was:" >&5
318 sed 's/^/| /' conftest1.$ac_ext >&5
319 echo "$as_me: failed source file 2 of 2 was:" >&5
320 sed 's/^/| /' conftest2.$ac_ext >&5
322 dnl Delete also the IPA/IPO (Inter Procedural Analysis/Optimization)
323 dnl information created by the PGI compiler (conftest_ipa8_conftest.oo),
324 dnl as it would interfere with the next link command.
325 rm -rf conftest.dSYM conftest1.dSYM conftest2.dSYM
326 rm -f core conftest.err conftest1.err conftest2.err
327 rm -f conftest1.$ac_objext conftest2.$ac_objext conftest*_ipa8_conftest*.oo
328 rm -f conftest$ac_exeext
329 rm -f m4_ifval([$1], [conftest1.$ac_ext]) m4_ifval([$2], [conftest1.$ac_ext])[]dnl
332 dnl Defines USE_LINKER_SECTIONS to 1 if the compiler supports putting
333 dnl variables in sections with user-defined names and the linker
334 dnl automatically defines __start_SECNAME and __stop_SECNAME symbols
335 dnl that designate the start and end of the sections.
336 AC_DEFUN([OVS_CHECK_LINKER_SECTIONS],
338 [for user-defined linker section support],
339 [ovs_cv_use_linker_sections],
342 [int a __attribute__((__section__("mysection"))) = 1;
343 int b __attribute__((__section__("mysection"))) = 2;
344 int c __attribute__((__section__("mysection"))) = 3;])],
347 extern int __start_mysection;
348 extern int __stop_mysection;],
349 [int n_ints = &__stop_mysection - &__start_mysection;
351 for (i = &__start_mysection; i < &__start_mysection + n_ints; i++) {
354 [ovs_cv_use_linker_sections=yes],
355 [ovs_cv_use_linker_sections=no])])
356 if test $ovs_cv_use_linker_sections = yes; then
357 AC_DEFINE([USE_LINKER_SECTIONS], [1],
358 [Define to 1 if the compiler support putting variables
359 into sections with user-defined names and the linker
360 automatically defines __start_SECNAME and __stop_SECNAME
361 symbols that designate the start and end of the section.])
364 [USE_LINKER_SECTIONS], [test $ovs_cv_use_linker_sections = yes])])