m4/openvswitch.m4

   1 # -*- autoconf -*-
   2
   3 # Copyright (c) 2008, 2009 Nicira Networks.
   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 Checks for --enable-ndebug and defines NDEBUG if it is specified.
  18 AC_DEFUN([OVS_CHECK_NDEBUG],
  19   [AC_ARG_ENABLE(
  20      [ndebug],
  21      [AC_HELP_STRING([--enable-ndebug],
  22                      [Disable debugging features for max performance])],
  23      [case "${enableval}" in
  24         (yes) ndebug=true ;;
  25         (no)  ndebug=false ;;
  26         (*) AC_MSG_ERROR([bad value ${enableval} for --enable-ndebug]) ;;
  27       esac],
  28      [ndebug=false])
  29    AM_CONDITIONAL([NDEBUG], [test x$ndebug = xtrue])])
  30
  31 dnl Checks for Netlink support.
  32 AC_DEFUN([OVS_CHECK_NETLINK],
  33   [AC_CHECK_HEADER([linux/netlink.h],
  34                    [HAVE_NETLINK=yes],
  35                    [HAVE_NETLINK=no],
  36                    [#include <sys/socket.h>
  37    #include <linux/types.h>
  38    ])
  39    AM_CONDITIONAL([HAVE_NETLINK], [test "$HAVE_NETLINK" = yes])
  40    if test "$HAVE_NETLINK" = yes; then
  41       AC_DEFINE([HAVE_NETLINK], [1],
  42                 [Define to 1 if Netlink protocol is available.])
  43    fi])
  44
  45 dnl Checks for OpenSSL, if --enable-ssl is passed in.
  46 AC_DEFUN([OVS_CHECK_OPENSSL],
  47   [AC_ARG_ENABLE(
  48      [ssl],
  49      [AC_HELP_STRING([--enable-ssl],
  50                      [Enable ssl support (requires libssl)])],
  51      [case "${enableval}" in
  52         (yes) ssl=true ;;
  53         (no)  ssl=false ;;
  54         (*) AC_MSG_ERROR([bad value ${enableval} for --enable-ssl]) ;;
  55       esac],
  56      [ssl=false])
  57
  58    if test "$ssl" = true; then
  59    dnl Make sure that pkg-config is installed.
  60    m4_pattern_forbid([PKG_CHECK_MODULES])
  61    PKG_CHECK_MODULES([SSL], [libssl],
  62      [HAVE_OPENSSL=yes],
  63      [HAVE_OPENSSL=no
  64       AC_MSG_WARN([Cannot find libssl:
  65
  66    $SSL_PKG_ERRORS
  67
  68    OpenFlow connections over SSL will not be supported.])])
  69
  70    fi
  71    AM_CONDITIONAL([HAVE_OPENSSL], [test "$HAVE_OPENSSL" = yes])
  72    if test "$HAVE_OPENSSL" = yes; then
  73       AC_DEFINE([HAVE_OPENSSL], [1], [Define to 1 if OpenSSL is installed.])
  74    fi])
  75
  76 dnl Checks for libraries needed by lib/fault.c.
  77 AC_DEFUN([OVS_CHECK_FAULT_LIBS],
  78   [AC_CHECK_LIB([dl], [dladdr], [FAULT_LIBS=-ldl])
  79    AC_SUBST([FAULT_LIBS])])
  80
  81 dnl Checks for libraries needed by lib/socket-util.c.
  82 AC_DEFUN([OVS_CHECK_SOCKET_LIBS],
  83   [AC_CHECK_LIB([socket], [connect])
  84    AC_SEARCH_LIBS([gethostbyname], [resolv], [RESOLVER_LIBS=-lresolv])])
  85
  86 dnl Checks for the directory in which to store the PKI.
  87 AC_DEFUN([OVS_CHECK_PKIDIR],
  88   [AC_ARG_WITH(
  89      [pkidir],
  90      AC_HELP_STRING([--with-pkidir=DIR],
  91                     [PKI hierarchy directory [[DATADIR/openvswitch/pki]]]),
  92      [PKIDIR=$withval],
  93      [PKIDIR='${pkgdatadir}/pki'])
  94    AC_SUBST([PKIDIR])])
  95
  96 dnl Checks for the directory in which to store pidfiles.
  97 AC_DEFUN([OVS_CHECK_RUNDIR],
  98   [AC_ARG_WITH(
  99      [rundir],
 100      AC_HELP_STRING([--with-rundir=DIR],
 101                     [directory used for pidfiles [[LOCALSTATEDIR/run]]]),
 102      [RUNDIR=$withval],
 103      [RUNDIR='${localstatedir}/run'])
 104    AC_SUBST([RUNDIR])])
 105
 106 dnl Checks for the directory in which to store logs.
 107 AC_DEFUN([OVS_CHECK_LOGDIR],
 108   [AC_ARG_WITH(
 109      [logdir],
 110      AC_HELP_STRING([--with-logdir=DIR],
 111                     [directory used for logs [[LOCALSTATEDIR/log/PACKAGE]]]),
 112      [LOGDIR=$withval],
 113      [LOGDIR='${localstatedir}/log/${PACKAGE}'])
 114    AC_SUBST([LOGDIR])])
 115
 116 dnl Checks for __malloc_hook, etc., supported by glibc.
 117 AC_DEFUN([OVS_CHECK_MALLOC_HOOKS],
 118   [AC_CACHE_CHECK(
 119     [whether libc supports hooks for malloc and related functions],
 120     [ovs_cv_malloc_hooks],
 121     [AC_COMPILE_IFELSE(
 122       [AC_LANG_PROGRAM(
 123          [#include <malloc.h>
 124          ],
 125          [(void) __malloc_hook;
 126           (void) __realloc_hook;
 127           (void) __free_hook;])],
 128       [ovs_cv_malloc_hooks=yes],
 129       [ovs_cv_malloc_hooks=no])])
 130    if test $ovs_cv_malloc_hooks = yes; then
 131      AC_DEFINE([HAVE_MALLOC_HOOKS], [1],
 132                [Define to 1 if you have __malloc_hook, __realloc_hook, and
 133                 __free_hook in <malloc.h>.])
 134    fi])
 135
 136 dnl Checks for valgrind/valgrind.h.
 137 AC_DEFUN([OVS_CHECK_VALGRIND],
 138   [AC_CHECK_HEADERS([valgrind/valgrind.h])])
 139
 140 dnl Searches for a directory to put lockfiles for tty devices.
 141 dnl Defines C preprocessor variable TTY_LOCK_DIR to a quoted string
 142 dnl for that directory.
 143 AC_DEFUN([OVS_CHECK_TTY_LOCK_DIR],
 144   [AC_CACHE_CHECK([directory used for serial device lockfiles],
 145                   [ovs_cv_path_tty_locks],
 146                   [# This list of candidate directories is from minicom.
 147                    ovs_cv_path_tty_locks=none
 148                    for dir in /etc/locks /var/lock /usr/spool/locks \
 149                               /var/spool/locks /var/spool/lock \
 150                               /usr/spool/uucp /var/spool/uucp /var/run; do
 151                      if test -d $dir; then
 152                        ovs_cv_path_tty_locks=$dir
 153                        break
 154                      fi
 155                    done])
 156    if test "$ovs_cv_path_tty_locks" = none; then
 157      AC_MSG_ERROR([cannot find a directory for tty locks])
 158    fi
 159    AC_DEFINE_UNQUOTED([TTY_LOCK_DIR], "$ovs_cv_path_tty_locks",
 160                       [Directory used for serial device lockfiles])])
 161
 162 dnl The following check is adapted from GNU PSPP.
 163 dnl It searches for the ncurses library.  If it finds it, it sets
 164 dnl HAVE_CURSES to yes and sets NCURSES_LIBS and NCURSES_CFLAGS
 165 dnl appropriate.  Otherwise, it sets HAVE_CURSES to no.
 166 AC_DEFUN([OVS_CHECK_CURSES],
 167   [if test "$cross_compiling" != yes; then
 168      AC_CHECK_PROGS([NCURSES_CONFIG], [ncurses5-config ncurses8-config])
 169    fi
 170    if test "$NCURSES_CONFIG" = ""; then
 171      AC_SEARCH_LIBS([tgetent], [ncurses],
 172          [AC_CHECK_HEADERS([term.h curses.h],
 173                            [HAVE_CURSES=yes],
 174                            [HAVE_CURSES=no])])
 175    else
 176      save_cflags=$CFLAGS
 177      CFLAGS="$CFLAGS $($NCURSES_CONFIG --cflags)"
 178      AC_CHECK_HEADERS([term.h curses.h],
 179                       [HAVE_CURSES=yes],
 180                       [HAVE_CURSES=no])
 181      CFLAGS=$save_cflags
 182      if test "$HAVE_CURSES" = yes; then
 183        NCURSES_LIBS=$($NCURSES_CONFIG --libs)
 184        NCURSES_CFLAGS=$($NCURSES_CONFIG --cflags)
 185        AC_SUBST(NCURSES_CFLAGS)
 186        AC_SUBST(NCURSES_LIBS)
 187      fi
 188    fi
 189    AM_CONDITIONAL([HAVE_CURSES], [test "$HAVE_CURSES" = yes])])
 190
 191 dnl Checks for linux/vt.h.
 192 AC_DEFUN([OVS_CHECK_LINUX_VT_H],
 193   [AC_CHECK_HEADER([linux/vt.h],
 194                    [HAVE_LINUX_VT_H=yes],
 195                    [HAVE_LINUX_VT_H=no])
 196    AM_CONDITIONAL([HAVE_LINUX_VT_H], [test "$HAVE_LINUX_VT_H" = yes])
 197    if test "$HAVE_LINUX_VT_H" = yes; then
 198       AC_DEFINE([HAVE_LINUX_VT_H], [1],
 199                 [Define to 1 if linux/vt.h is available.])
 200    fi])
 201
 202 dnl Checks for libpcre.
 203 AC_DEFUN([OVS_CHECK_PCRE],
 204   [dnl Make sure that pkg-config is installed.
 205    m4_pattern_forbid([PKG_CHECK_MODULES])
 206    PKG_CHECK_MODULES([PCRE], [libpcre], [HAVE_PCRE=yes], [HAVE_PCRE=no])
 207    AM_CONDITIONAL([HAVE_PCRE], [test "$HAVE_PCRE" = yes])
 208    if test "$HAVE_PCRE" = yes; then
 209       AC_DEFINE([HAVE_PCRE], [1], [Define to 1 if libpcre is installed.])
 210    fi])