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 m4_ifndef([PKG_CHECK_MODULES], [m4_fatal([Please install pkg-config.])])
96 PKG_CHECK_MODULES([SSL], [openssl],
99 if test "$ssl" = check; then
100 AC_MSG_WARN([Cannot find openssl:
104 OpenFlow connections over SSL will not be supported.
105 (You may use --disable-ssl to suppress this warning.)])
107 AC_MSG_ERROR([Cannot find openssl (use --disable-ssl to configure without SSL support)])
112 AC_SUBST([HAVE_OPENSSL])
113 AM_CONDITIONAL([HAVE_OPENSSL], [test "$HAVE_OPENSSL" = yes])
114 if test "$HAVE_OPENSSL" = yes; then
115 AC_DEFINE([HAVE_OPENSSL], [1], [Define to 1 if OpenSSL is installed.])
118 dnl Checks for libraries needed by lib/socket-util.c.
119 AC_DEFUN([OVS_CHECK_SOCKET_LIBS],
120 [AC_CHECK_LIB([socket], [connect])
121 AC_SEARCH_LIBS([gethostbyname], [resolv], [RESOLVER_LIBS=-lresolv])])
123 dnl Checks for the directory in which to store the PKI.
124 AC_DEFUN([OVS_CHECK_PKIDIR],
127 AC_HELP_STRING([--with-pkidir=DIR],
128 [PKI hierarchy directory [[DATADIR/openvswitch/pki]]]),
130 [PKIDIR='${pkgdatadir}/pki'])
133 dnl Checks for the directory in which to store pidfiles.
134 AC_DEFUN([OVS_CHECK_RUNDIR],
137 AC_HELP_STRING([--with-rundir=DIR],
138 [directory used for pidfiles
139 [[LOCALSTATEDIR/run/openvswitch]]]),
141 [RUNDIR='${localstatedir}/run/openvswitch'])
144 dnl Checks for the directory in which to store logs.
145 AC_DEFUN([OVS_CHECK_LOGDIR],
148 AC_HELP_STRING([--with-logdir=DIR],
149 [directory used for logs [[LOCALSTATEDIR/log/PACKAGE]]]),
151 [LOGDIR='${localstatedir}/log/${PACKAGE}'])
154 dnl Defines HAVE_BACKTRACE if backtrace() is declared in <execinfo.h>
155 dnl and exists in libc.
156 AC_DEFUN([OVS_CHECK_BACKTRACE],
157 [AC_CHECK_HEADER([execinfo.h], [AC_CHECK_FUNCS([backtrace])])])
159 dnl Checks for __malloc_hook, etc., supported by glibc.
160 AC_DEFUN([OVS_CHECK_MALLOC_HOOKS],
162 [whether libc supports hooks for malloc and related functions],
163 [ovs_cv_malloc_hooks],
168 [(void) __malloc_hook;
169 (void) __realloc_hook;
170 (void) __free_hook;])],
171 [ovs_cv_malloc_hooks=yes],
172 [ovs_cv_malloc_hooks=no])])
173 if test $ovs_cv_malloc_hooks = yes; then
174 AC_DEFINE([HAVE_MALLOC_HOOKS], [1],
175 [Define to 1 if you have __malloc_hook, __realloc_hook, and
176 __free_hook in <malloc.h>.])
179 dnl Checks for valgrind/valgrind.h.
180 AC_DEFUN([OVS_CHECK_VALGRIND],
181 [AC_CHECK_HEADERS([valgrind/valgrind.h])])
183 dnl Checks for Python 2.x, x >= 4.
184 AC_DEFUN([OVS_CHECK_PYTHON],
186 [for Python 2.x for x >= 4],
188 [if test -n "$PYTHON"; then
189 ovs_cv_python=$PYTHON
192 for binary in python python2.4 python2.5; do
193 ovs_save_IFS=$IFS; IFS=$PATH_SEPARATOR
196 test -z "$dir" && dir=.
197 if test -x $dir/$binary && $dir/$binary -c 'import sys
198 if sys.hexversion >= 0x02040000 and sys.hexversion < 0x03000000:
202 ovs_cv_python=$dir/$binary
208 AC_SUBST([HAVE_PYTHON])
209 AM_MISSING_PROG([PYTHON], [python])
210 if test $ovs_cv_python != no; then
211 PYTHON=$ovs_cv_python
216 AM_CONDITIONAL([HAVE_PYTHON], [test "$HAVE_PYTHON" = yes])])
219 AC_DEFUN([OVS_CHECK_DOT],
223 [dnl "dot" writes -V output to stderr:
224 if (dot -V) 2>&1 | grep '^dot - [[gG]]raphviz version' >/dev/null 2>&1; then
229 AM_CONDITIONAL([HAVE_DOT], [test "$ovs_cv_dot" = yes])])
231 dnl Checks for pyuic4.
232 AC_DEFUN([OVS_CHECK_PYUIC4],
236 [if (pyuic4 --version) >/dev/null 2>&1; then
241 AM_MISSING_PROG([PYUIC4], [pyuic4])
242 if test $ovs_cv_pyuic4 != no; then
243 PYUIC4=$ovs_cv_pyuic4
246 dnl Checks whether $PYTHON supports the module given as $1
247 AC_DEFUN([OVS_CHECK_PYTHON_MODULE],
248 [AC_REQUIRE([OVS_CHECK_PYTHON])
250 [for $1 Python module],
251 [ovs_cv_py_[]AS_TR_SH([$1])],
252 [ovs_cv_py_[]AS_TR_SH([$1])=no
253 if test $HAVE_PYTHON = yes; then
254 AS_ECHO(["running $PYTHON -c 'import $1
256 sys.exit(0)'..."]) >&AS_MESSAGE_LOG_FD 2>&1
257 if $PYTHON -c 'import $1
259 sys.exit(0)' >&AS_MESSAGE_LOG_FD 2>&1; then
260 ovs_cv_py_[]AS_TR_SH([$1])=yes
264 dnl Checks for Python modules needed by ovsdbmonitor.
265 AC_DEFUN([OVS_CHECK_OVSDBMONITOR],
266 [OVS_CHECK_PYTHON_MODULE([PySide.QtCore])
267 OVS_CHECK_PYTHON_MODULE([PyQt4.QtCore])
268 OVS_CHECK_PYTHON_MODULE([twisted.conch.ssh])
269 OVS_CHECK_PYTHON_MODULE([twisted.internet])
270 OVS_CHECK_PYTHON_MODULE([twisted.application])
271 OVS_CHECK_PYTHON_MODULE([json])
272 OVS_CHECK_PYTHON_MODULE([zope.interface])
273 if (test $ovs_cv_py_PySide_QtCore = yes \
274 || test $ovs_cv_py_PyQt4_QtCore = yes) \
275 && test $ovs_cv_py_twisted_conch_ssh = yes \
276 && test $ovs_cv_py_twisted_internet = yes \
277 && test $ovs_cv_py_twisted_application = yes \
278 && test $ovs_cv_py_json = yes \
279 && test $ovs_cv_py_zope_interface = yes; then
280 BUILD_OVSDBMONITOR=yes
282 BUILD_OVSDBMONITOR=no
284 AC_MSG_CHECKING([whether to build ovsdbmonitor])
285 AC_MSG_RESULT([$BUILD_OVSDBMONITOR])
286 AM_CONDITIONAL([BUILD_OVSDBMONITOR], [test $BUILD_OVSDBMONITOR = yes])])
288 # OVS_LINK2_IFELSE(SOURCE1, SOURCE2, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
289 # -------------------------------------------------------------
290 # Based on AC_LINK_IFELSE, but tries to link both SOURCE1 and SOURCE2
293 # This macro is borrowed from acinclude.m4 in GNU PSPP, which has the
296 # Copyright (C) 2005, 2006, 2007, 2009 Free Software Foundation, Inc.
297 # This file is free software; the Free Software Foundation
298 # gives unlimited permission to copy and/or distribute it,
299 # with or without modifications, as long as this notice is preserved.
301 m4_define([OVS_LINK2_IFELSE],
302 [m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])dnl
303 mv conftest.$ac_ext conftest1.$ac_ext
304 m4_ifvaln([$2], [AC_LANG_CONFTEST([$2])])dnl
305 mv conftest.$ac_ext conftest2.$ac_ext
306 rm -f conftest1.$ac_objext conftest2.$ac_objext conftest$ac_exeext
307 ovs_link2='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest1.$ac_ext conftest2.$ac_ext $LIBS >&5'
308 AS_IF([_AC_DO_STDERR($ovs_link2) && {
309 test -z "$ac_[]_AC_LANG_ABBREV[]_werror_flag" ||
310 test ! -s conftest.err
311 } && test -s conftest$ac_exeext && {
312 test "$cross_compiling" = yes ||
313 AS_TEST_X([conftest$ac_exeext])
316 [echo "$as_me: failed source file 1 of 2 was:" >&5
317 sed 's/^/| /' conftest1.$ac_ext >&5
318 echo "$as_me: failed source file 2 of 2 was:" >&5
319 sed 's/^/| /' conftest2.$ac_ext >&5
321 dnl Delete also the IPA/IPO (Inter Procedural Analysis/Optimization)
322 dnl information created by the PGI compiler (conftest_ipa8_conftest.oo),
323 dnl as it would interfere with the next link command.
324 rm -rf conftest.dSYM conftest1.dSYM conftest2.dSYM
325 rm -f core conftest.err conftest1.err conftest2.err
326 rm -f conftest1.$ac_objext conftest2.$ac_objext conftest*_ipa8_conftest*.oo
327 rm -f conftest$ac_exeext
328 rm -f m4_ifval([$1], [conftest1.$ac_ext]) m4_ifval([$2], [conftest1.$ac_ext])[]dnl
331 dnl Defines USE_LINKER_SECTIONS to 1 if the compiler supports putting
332 dnl variables in sections with user-defined names and the linker
333 dnl automatically defines __start_SECNAME and __stop_SECNAME symbols
334 dnl that designate the start and end of the sections.
335 AC_DEFUN([OVS_CHECK_LINKER_SECTIONS],
337 [for user-defined linker section support],
338 [ovs_cv_use_linker_sections],
341 [int a __attribute__((__section__("mysection"))) = 1;
342 int b __attribute__((__section__("mysection"))) = 2;
343 int c __attribute__((__section__("mysection"))) = 3;])],
346 extern int __start_mysection;
347 extern int __stop_mysection;],
348 [int n_ints = &__stop_mysection - &__start_mysection;
350 for (i = &__start_mysection; i < &__start_mysection + n_ints; i++) {
353 [ovs_cv_use_linker_sections=yes],
354 [ovs_cv_use_linker_sections=no])])
355 if test $ovs_cv_use_linker_sections = yes; then
356 AC_DEFINE([USE_LINKER_SECTIONS], [1],
357 [Define to 1 if the compiler support putting variables
358 into sections with user-defined names and the linker
359 automatically defines __start_SECNAME and __stop_SECNAME
360 symbols that designate the start and end of the section.])
363 [USE_LINKER_SECTIONS], [test $ovs_cv_use_linker_sections = yes])])