configure.ac 53.8 KB
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dnl -*- mode: m4 -*-
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AC_PREREQ([2.63])
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m4_define([dbus_major_version], [1])
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m4_define([dbus_minor_version], [5])
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m4_define([dbus_micro_version], [5])
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m4_define([dbus_version],
          [dbus_major_version.dbus_minor_version.dbus_micro_version])
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AC_INIT([dbus],[dbus_version],[https://bugs.freedesktop.org/enter_bug.cgi?product=dbus],[dbus])
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AC_CANONICAL_HOST
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AC_CONFIG_HEADERS([config.h])
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AC_CONFIG_MACRO_DIR([m4])

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AM_INIT_AUTOMAKE([1.10 tar-ustar -Wno-portability])
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GETTEXT_PACKAGE=dbus-1
AC_SUBST(GETTEXT_PACKAGE)
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AC_DEFINE_UNQUOTED(GETTEXT_PACKAGE,"$GETTEXT_PACKAGE",[The name of the gettext domain])
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 ## must come before we use the $USE_MAINTAINER_MODE variable later
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AM_MAINTAINER_MODE

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m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])

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AC_DEFINE_UNQUOTED(DBUS_DAEMON_NAME,"dbus-daemon",[Name of executable])

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# libtool versioning - this applies to libdbus
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#
# See http://sources.redhat.com/autobook/autobook/autobook_91.html#SEC91 for details
#
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## increment if the interface has additions, changes, removals.
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LT_CURRENT=9
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## increment any time the source changes; set to
##  0 if you increment CURRENT
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LT_REVISION=2
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## increment if any interfaces have been added; set to 0
## if any interfaces have been changed or removed. removal has
## precedence over adding, so set to 0 if both happened.
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LT_AGE=6
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AC_SUBST(LT_CURRENT)
AC_SUBST(LT_REVISION)
AC_SUBST(LT_AGE)

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DBUS_MAJOR_VERSION=dbus_major_version
DBUS_MINOR_VERSION=dbus_minor_version
DBUS_MICRO_VERSION=dbus_micro_version
DBUS_VERSION=dbus_major_version.dbus_minor_version.dbus_micro_version

AC_SUBST(DBUS_MAJOR_VERSION)
AC_SUBST(DBUS_MINOR_VERSION)
AC_SUBST(DBUS_MICRO_VERSION)
AC_SUBST(DBUS_VERSION)
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AC_PROG_CC
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AM_PROG_CC_C_O
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AC_PROG_CXX
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AC_USE_SYSTEM_EXTENSIONS
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AC_ISC_POSIX
AC_HEADER_STDC
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AC_C_INLINE
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AM_PROG_LIBTOOL
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AC_PROG_MKDIR_P
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COMPILER_COVERAGE
COMPILER_OPTIMISATIONS
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# Initialize libtool
LT_INIT([win32-dll])
LT_LANG([Windows Resource])

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# Set some internal variables depending on the platform for later use.
dbus_win=no
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dbus_cygwin=no
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dbus_unix=no
case "${host}" in
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    *-mingw32ce*)
        dbus_win=yes
        dbus_wince=yes
        ;;
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    *-mingw32*)
        dbus_win=yes
        ;;
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    *-cygwin*)
        dbus_cygwin=yes
        dbus_unix=yes
        ;;
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    *)
        dbus_unix=yes
       ;;
esac

# Special defines for certain platforms
if test "$dbus_win" = yes; then
    AC_DEFINE(DBUS_WIN,1,[Defined if we run on a W32 API based system])
    BUILD_TIMESTAMP=`date --iso-8601=minutes`
    AC_SUBST(BUILD_TIMESTAMP)
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    # Assume DBUS_VERSION is always three numbers
    BUILD_FILEVERSION=`echo "$DBUS_VERSION" | sed -e 's/\./,/g'`,0
    AC_SUBST(BUILD_FILEVERSION)
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    AC_CHECK_TOOL(WINDRES, windres, no)
    if test "$WINDRES" = no; then
      AC_MSG_ERROR([*** Could not find an implementation of windres in your PATH.])
    fi
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    if test "$dbus_wince" = yes; then
      AC_DEFINE(DBUS_WINCE,1,[Defined if we run on a W32 CE API based system])
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      AC_DEFINE(_WIN32_WCE, 0x0502, [Defined to get newer W32 CE APIs])
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    fi
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else
    AC_DEFINE(DBUS_UNIX,1,[Defined if we run on a Unix-based system])
fi
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if test "$dbus_cygwin" = yes; then
    AC_DEFINE(DBUS_CYGWIN,1,[Defined if we run on a cygwin API based system])
fi
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AM_CONDITIONAL(DBUS_WIN, test "$dbus_win" = yes)
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AM_CONDITIONAL(DBUS_WINCE, test "$dbus_wince" = yes)
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AM_CONDITIONAL(DBUS_UNIX, test "$dbus_unix" = yes)
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AM_CONDITIONAL(DBUS_CYGWIN, test "$dbus_cygwin" = yes)
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AC_ARG_ENABLE(ansi, AS_HELP_STRING([--enable-ansi],[enable -ansi -pedantic gcc flags]),enable_ansi=$enableval,enable_ansi=no)
AC_ARG_ENABLE(verbose-mode, AS_HELP_STRING([--enable-verbose-mode],[support verbose debug mode]),enable_verbose_mode=$enableval,enable_verbose_mode=$USE_MAINTAINER_MODE)
AC_ARG_ENABLE(asserts, AS_HELP_STRING([--enable-asserts],[include assertion checks]),enable_asserts=$enableval,enable_asserts=$USE_MAINTAINER_MODE)
AC_ARG_ENABLE(checks, AS_HELP_STRING([--enable-checks],[include sanity checks on public API]),enable_checks=$enableval,enable_checks=yes)
AC_ARG_ENABLE(xml-docs, AS_HELP_STRING([--enable-xml-docs],[build XML documentation (requires xmlto)]),enable_xml_docs=$enableval,enable_xml_docs=auto)
AC_ARG_ENABLE(doxygen-docs, AS_HELP_STRING([--enable-doxygen-docs],[build DOXYGEN documentation (requires Doxygen)]),enable_doxygen_docs=$enableval,enable_doxygen_docs=auto)
AC_ARG_ENABLE(abstract-sockets, AS_HELP_STRING([--enable-abstract-sockets],[use abstract socket namespace (linux only)]),enable_abstract_sockets=$enableval,enable_abstract_sockets=auto)
AC_ARG_ENABLE(selinux, AS_HELP_STRING([--enable-selinux],[build with SELinux support]),enable_selinux=$enableval,enable_selinux=auto)
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AC_ARG_ENABLE(libaudit,AS_HELP_STRING([--enable-libaudit],[build audit daemon support for SELinux]),enable_libaudit=$enableval,enable_libaudit=auto)
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AC_ARG_ENABLE(dnotify, AS_HELP_STRING([--enable-dnotify],[build with dnotify support (linux only)]),enable_dnotify=$enableval,enable_dnotify=auto)
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AC_ARG_ENABLE(inotify, AS_HELP_STRING([--enable-inotify],[build with inotify support (linux only)]),enable_inotify=$enableval,enable_inotify=auto)
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AC_ARG_ENABLE(kqueue, AS_HELP_STRING([--enable-kqueue],[build with kqueue support]),enable_kqueue=$enableval,enable_kqueue=auto)
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AC_ARG_ENABLE(console-owner-file, AS_HELP_STRING([--enable-console-owner-file],[enable console owner file]),enable_console_owner_file=$enableval,enable_console_owner_file=auto)
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AC_ARG_ENABLE(userdb-cache, AS_HELP_STRING([--enable-userdb-cache],[build with userdb-cache support]),enable_userdb_cache=$enableval,enable_userdb_cache=yes)
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AC_ARG_ENABLE(launchd, AS_HELP_STRING([--enable-launchd],[build with launchd auto-launch support]),enable_launchd=$enableval,enable_launchd=auto)
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AC_ARG_WITH(xml, AS_HELP_STRING([--with-xml=[libxml/expat]],[XML library to use (libxml may be named libxml2 on some systems)]))
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AC_ARG_WITH(init-scripts, AS_HELP_STRING([--with-init-scripts=[redhat]],[Style of init scripts to install]))
AC_ARG_WITH(session-socket-dir, AS_HELP_STRING([--with-session-socket-dir=[dirname]],[Where to put sockets for the per-login-session message bus]))
AC_ARG_WITH(test-socket-dir, AS_HELP_STRING([--with-test-socket-dir=[dirname]],[Where to put sockets for make check]))
AC_ARG_WITH(system-pid-file, AS_HELP_STRING([--with-system-pid-file=[pidfile]],[PID file for systemwide daemon]))
AC_ARG_WITH(system-socket, AS_HELP_STRING([--with-system-socket=[filename]],[UNIX domain socket for systemwide daemon]))
AC_ARG_WITH(console-auth-dir, AS_HELP_STRING([--with-console-auth-dir=[dirname]],[directory to check for console ownerhip]))
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AC_ARG_WITH(console-owner-file, AS_HELP_STRING([--with-console-owner-file=[filename]],[file whose owner determines current console owner]))
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AC_ARG_WITH(launchd-agent-dir, AS_HELP_STRING([--with-launchd-agent-dir=[dirname]],[directory to put the launchd agent (default: /Library/LaunchAgents)]))
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AC_ARG_WITH(dbus_user, AS_HELP_STRING([--with-dbus-user=<user>],[User for running the DBUS daemon (messagebus)]))
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AC_ARG_WITH(dbus_daemondir, AS_HELP_STRING([--with-dbus-daemondir=[dirname]],[Directory for installing the DBUS daemon]))
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AC_ARG_ENABLE([embedded-tests],
  AS_HELP_STRING([--enable-embedded-tests],
    [enable unit test code in the library and binaries]),
  [], [enable_embedded_tests=$USE_MAINTAINER_MODE])
AC_ARG_ENABLE([modular-tests],
  AS_HELP_STRING([--enable-modular-tests],
    [enable modular regression tests (requires GLib)]),
  [], [enable_modular_tests=auto])
# --enable-tests overrides both --enable-embedded-tests and
# --enable-modular-tests
AC_ARG_ENABLE([tests],
  AS_HELP_STRING([--enable-tests],
    [enable/disable all tests, overriding embedded-tests/modular-tests]),
  [enable_embedded_tests=$enableval; enable_modular_tests=$enableval],
  [])

# DBUS_ENABLE_EMBEDDED_TESTS controls unit tests built in to .c files
# and also some stuff in the test/ subdir. DBUS_BUILD_TESTS was an older
# name for this.
AM_CONDITIONAL([DBUS_BUILD_TESTS], [test "x$enable_embedded_tests" = xyes])
AM_CONDITIONAL([DBUS_ENABLE_EMBEDDED_TESTS],
  [test "x$enable_embedded_tests" = xyes])
if test "x$enable_embedded_tests" = xyes; then
    AC_DEFINE([DBUS_ENABLE_EMBEDDED_TESTS], [1],
      [Define to build test code into the library and binaries])
    AC_DEFINE([DBUS_BUILD_TESTS], [1],
      [Define to build test code into the library and binaries])
fi

# DBUS_ENABLE_MODULAR_TESTS controls tests that work based on public API.
# These use GTest, from GLib, because life's too short. They're enabled by
# default (unless you don't have GLib), because they don't bloat the library
# or binaries.
if test "x$enable_modular_tests" != xno; then
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  PKG_CHECK_MODULES([GLIB], [glib-2.0 >= 2.22, gio-2.0 >= 2.22],
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    [],
    [if test "x$enable_modular_tests" = xyes; then
      AC_MSG_ERROR([GLib is required by the modular tests])
    else # assumed to be "auto"
      enable_modular_tests=no
    fi])
  # If dbus-gmain.[ch] returned to libdbus then we wouldn't need this
  PKG_CHECK_MODULES([DBUS_GLIB], [dbus-glib-1],
    [],
    [if test "x$enable_modular_tests" = xyes; then
      AC_MSG_ERROR([dbus-glib is required by the modular tests (for now)])
    else # assumed to be "auto"
      enable_modular_tests=no
    fi])
  if test "x$enable_modular_tests" != xno; then
    # dependencies checked, switch from auto to yes
    enable_modular_tests=yes
  fi
fi
if test "x$enable_modular_tests" = xyes; then
  AC_DEFINE([DBUS_ENABLE_MODULAR_TESTS], [1],
    [Define to build independent test binaries (requires GLib)])
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fi
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AM_CONDITIONAL([DBUS_ENABLE_MODULAR_TESTS],
  [test "x$enable_modular_tests" = xyes])
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AC_ARG_ENABLE([installed-tests],
  AS_HELP_STRING([--enable-installed-tests],
    [enable unit test code in the library and binaries]),
  [], [enable_installed_tests=no])
AM_CONDITIONAL([DBUS_ENABLE_INSTALLED_TESTS],
  [test "x$enable_installed_tests" = xyes])
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if test x$enable_verbose_mode = xyes; then
    AC_DEFINE(DBUS_ENABLE_VERBOSE_MODE,1,[Support a verbose mode])
fi
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if test x$enable_asserts = xno; then
    AC_DEFINE(DBUS_DISABLE_ASSERT,1,[Disable assertion checking])
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    R_DYNAMIC_LDFLAG=""
else
    # -rdynamic is needed for glibc's backtrace_symbols to work.
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    # No clue how much overhead this adds, but it's useful
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    # to do this on any assertion failure,
    # so for now it's enabled anytime asserts are (currently not
    # in production builds).

    # To get -rdynamic you pass -export-dynamic to libtool.
    AC_DEFINE(DBUS_BUILT_R_DYNAMIC,1,[whether -export-dynamic was passed to libtool])
    R_DYNAMIC_LDFLAG=-export-dynamic
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fi
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AC_SUBST(R_DYNAMIC_LDFLAG)

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if test x$enable_checks = xno; then
    AC_DEFINE(DBUS_DISABLE_CHECKS,1,[Disable public API sanity checking])
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    AC_DEFINE(G_DISABLE_CHECKS,1,[Disable GLib public API sanity checking])
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fi
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if test x$enable_userdb_cache = xyes; then
    AC_DEFINE(DBUS_ENABLE_USERDB_CACHE,1,[Build with caching of user data])
fi

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if test x$enable_compiler_coverage = xyes; then
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     ## so that config.h changes when you toggle gcov support
     AC_DEFINE_UNQUOTED(DBUS_GCOV_ENABLED, 1, [Defined if gcov is enabled to force a rebuild due to config.h changing])
fi

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# glibc21.m4 serial 3
dnl Copyright (C) 2000-2002, 2004 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.

# Test for the GNU C Library, version 2.1 or newer.
# From Bruno Haible.

AC_CACHE_CHECK(whether we are using the GNU C Library 2.1 or newer,
  ac_cv_gnu_library_2_1,
  [AC_EGREP_CPP([Lucky GNU user],
    [
#include <features.h>
#ifdef __GNU_LIBRARY__
 #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)
  Lucky GNU user
 #endif
#endif
    ],
    ac_cv_gnu_library_2_1=yes,
    ac_cv_gnu_library_2_1=no)
  ]
)

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#### Integer sizes
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AC_CHECK_SIZEOF(char)
AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(void *)
AC_CHECK_SIZEOF(long long)
AC_CHECK_SIZEOF(__int64)

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AC_ARG_WITH([64-bit],
  [AS_HELP_STRING([--without-64-bit],
    [If you have to use this option, please report it as a bug])],
  [],
  [with_64_bit=yes])

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### See what our 64 bit type is called
AC_MSG_CHECKING([64-bit integer type])

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case 8 in
$ac_cv_sizeof_int)
  dbusint64=int
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  dbusint64_constant='(val)'
  dbusuint64_constant='(val)'
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  dbusint64_printf_modifier='""'
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  ;;
$ac_cv_sizeof_long)
  dbusint64=long
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  dbusint64_constant='(val##L)'
  dbusuint64_constant='(val##UL)'
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  dbusint64_printf_modifier='"l"'
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  ;;
$ac_cv_sizeof_long_long)
  dbusint64='long long'
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  dbusint64_constant='(val##LL)'
  dbusuint64_constant='(val##ULL)'
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  # Ideally we discover what the format is, but this is
  # only used in verbose mode, so eh...
  if test x"$ac_cv_gnu_library_2_1" = xyes; then
    dbusint64_printf_modifier='"ll"'
  fi
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  ;;
$ac_cv_sizeof___int64)
  dbusint64=__int64
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  dbusint64_constant='(val##i64)'
  dbusuint64_constant='(val##ui64)'
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  # See above case
  if test x"$ac_cv_gnu_library_2_1" = xyes; then
    dbusint64_printf_modifier='"ll"'
  fi
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  ;;
esac

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AS_IF(
  [test "x$with_64_bit" = xno],
  [
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        DBUS_INT64_TYPE="no_int64_type_detected"
        DBUS_HAVE_INT64=0
        DBUS_INT64_CONSTANT=
        DBUS_UINT64_CONSTANT=
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        AC_MSG_RESULT([disabled via --without-64-bit])
  ],
  dnl else if
  [test -z "$dbusint64"],
  [AC_MSG_RESULT([not found])
  AC_MSG_ERROR([Could not find a 64-bit integer type.

Please report a bug here with details of your platform and compiler:

    http://bugs.freedesktop.org/enter_bug.cgi?product=DBus&component=core

To compile D-Bus with all 64-bit integer types removed (not recommended), use
the option "--without-64-bit".

This option is likely to be removed in future, unless you report that your
platform needs it.])
  ],
  dnl else
  [
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        DBUS_INT64_TYPE="$dbusint64"
        DBUS_HAVE_INT64=1
        DBUS_INT64_CONSTANT="$dbusint64_constant"
        DBUS_UINT64_CONSTANT="$dbusuint64_constant"
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	if test x"$dbusint64_printf_modifier" != x; then
		AC_DEFINE_UNQUOTED(DBUS_INT64_PRINTF_MODIFIER, [$dbusint64_printf_modifier], [Define to printf modifier for 64 bit integer type])
	fi
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        AC_MSG_RESULT($DBUS_INT64_TYPE)
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  ])
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AC_SUBST(DBUS_INT64_TYPE)
AC_SUBST(DBUS_INT64_CONSTANT)
AC_SUBST(DBUS_UINT64_CONSTANT)
AC_SUBST(DBUS_HAVE_INT64)
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### see what 32-bit int is called
AC_MSG_CHECKING([32-bit integer type])

case 4 in
$ac_cv_sizeof_short)
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  dbusint32=short
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  ;;
$ac_cv_sizeof_int)
  dbusint32=int
  ;;
$ac_cv_sizeof_long)
  dbusint32=long
  ;;
esac

if test -z "$dbusint32" ; then
        DBUS_INT32_TYPE="no_int32_type_detected"
        AC_MSG_ERROR([No 32-bit integer type found])
else
        DBUS_INT32_TYPE="$dbusint32"
        AC_MSG_RESULT($DBUS_INT32_TYPE)
fi

AC_SUBST(DBUS_INT32_TYPE)

### see what 16-bit int is called
AC_MSG_CHECKING([16-bit integer type])

case 2 in
$ac_cv_sizeof_short)
  dbusint16=short
  ;;
$ac_cv_sizeof_int)
  dbusint16=int
  ;;
esac

if test -z "$dbusint16" ; then
        DBUS_INT16_TYPE="no_int16_type_detected"
        AC_MSG_ERROR([No 16-bit integer type found])
else
        DBUS_INT16_TYPE="$dbusint16"
        AC_MSG_RESULT($DBUS_INT16_TYPE)
fi

AC_SUBST(DBUS_INT16_TYPE)

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## byte order
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case $host_os in
	darwin*)
		# check at compile-time, so that it is possible to build universal
		# (with multiple architectures at once on the compile line)
		AH_VERBATIM([WORDS_BIGENDIAN_DARWIN], [
			/* Use the compiler-provided endianness defines to allow universal compiling. */
			#if defined(__BIG_ENDIAN__)
			#define WORDS_BIGENDIAN 1
			#endif
		])
		;;
	*)
		AC_C_BIGENDIAN
		;;
esac
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dnl **********************************
dnl *** va_copy checks (from GLib) ***
dnl **********************************
dnl we currently check for all three va_copy possibilities, so we get
dnl all results in config.log for bug reports.
AC_CACHE_CHECK([for an implementation of va_copy()],dbus_cv_va_copy,[
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	AC_LINK_IFELSE([AC_LANG_SOURCE([#include <stdarg.h>
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#include <stdlib.h>
	static void f (int i, ...) {
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	va_list args1, args2;
	va_start (args1, i);
	va_copy (args2, args1);
	if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
	  exit (1);
	va_end (args1); va_end (args2);
	}
	int main() {
	  f (0, 42);
	  return 0;
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	}])],
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	[dbus_cv_va_copy=yes],
	[dbus_cv_va_copy=no])
])
AC_CACHE_CHECK([for an implementation of __va_copy()],dbus_cv___va_copy,[
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	AC_LINK_IFELSE([AC_LANG_SOURCE([#include <stdarg.h>
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#include <stdlib.h>
	static void f (int i, ...) {
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	va_list args1, args2;
	va_start (args1, i);
	__va_copy (args2, args1);
	if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
	  exit (1);
	va_end (args1); va_end (args2);
	}
	int main() {
	  f (0, 42);
	  return 0;
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	}])],
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	[dbus_cv___va_copy=yes],
	[dbus_cv___va_copy=no])
])

if test "x$dbus_cv_va_copy" = "xyes"; then
  dbus_va_copy_func=va_copy
else if test "x$dbus_cv___va_copy" = "xyes"; then
  dbus_va_copy_func=__va_copy
fi
fi

if test -n "$dbus_va_copy_func"; then
  AC_DEFINE_UNQUOTED(DBUS_VA_COPY,$dbus_va_copy_func,[A 'va_copy' style function])
fi

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AC_LANG_PUSH(C)
AC_CACHE_CHECK([whether va_lists can be copied by value],
	dbus_cv_va_val_copy,
	[AC_RUN_IFELSE([AC_LANG_PROGRAM(
[[
	#include <stdarg.h>
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	#include <stdlib.h>
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]],
[[
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	static void f (int i, ...) {
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	va_list args1, args2;
	va_start (args1, i);
	args2 = args1;
	if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
	  exit (1);
	va_end (args1); va_end (args2);
	}
	int main() {
	  f (0, 42);
	  return 0;
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	}
]])],
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	[dbus_cv_va_val_copy=yes],
	[dbus_cv_va_val_copy=no],
	[dbus_cv_va_val_copy=yes])
])
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AC_LANG_POP(C)
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if test "x$dbus_cv_va_val_copy" = "xno"; then
  AC_DEFINE(DBUS_VA_COPY_AS_ARRAY,1, ['va_lists' cannot be copies as values])
fi


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#### Atomic integers

AC_CACHE_CHECK([whether $CC knows __sync_sub_and_fetch()],
  dbus_cv_sync_sub_and_fetch,
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  [AC_LINK_IFELSE([
     AC_LANG_PROGRAM([[]], [[int a = 4; int b = __sync_sub_and_fetch(&a, 4); exit(b); ]])],
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     [dbus_cv_sync_sub_and_fetch=yes],
     [dbus_cv_sync_sub_and_fetch=no])
  ])

if test "x$dbus_cv_sync_sub_and_fetch" = "xyes" ; then
   have_sync=1
else
   have_sync=0
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fi
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AC_DEFINE_UNQUOTED([DBUS_USE_SYNC], [$have_sync], [Use the gcc __sync extension])
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#### Various functions
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AC_SEARCH_LIBS(socket,[socket network])
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AC_CHECK_FUNC(gethostbyname,,[AC_CHECK_LIB(nsl,gethostbyname)])
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AC_CHECK_FUNCS(vsnprintf vasprintf nanosleep usleep setenv clearenv unsetenv socketpair getgrouplist fpathconf setrlimit poll setlocale localeconv strtoll strtoull)
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#### Check for broken poll; taken from Glib's configure

AC_MSG_CHECKING([for broken poll])
AC_RUN_IFELSE([AC_LANG_SOURCE([[
    #include <stdlib.h>
    #include <fcntl.h>
    #include <poll.h>
    #ifdef HAVE_SYS_POLL_H
    #include <sys/poll.h>
    #endif
    int main(void) {
      struct pollfd fds[1];
      int fd;
      fd = open("/dev/null", 1);
      fds[0].fd = fd;
      fds[0].events = POLLIN;
      fds[0].revents = 0;
      if (poll(fds, 1, 0) < 0 || (fds[0].revents & POLLNVAL) != 0) {
            exit(1);  /* Does not work for devices -- fail */
      }
      exit(0);
    }]])],
  [broken_poll=no],
  [broken_poll=yes
   AC_DEFINE(BROKEN_POLL,1,[poll doesn't work on devices])],
  [broken_poll="no (cross compiling)"])
AC_MSG_RESULT($broken_poll)
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AC_MSG_CHECKING(for dirfd)
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[
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#include <sys/types.h>
#include <dirent.h>
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]], [[
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DIR *dirp;
dirp = opendir(".");
dirfd(dirp);
closedir(dirp);
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]])],
[dbus_have_dirfd=yes],
[dbus_have_dirfd=no])
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AC_MSG_RESULT($dbus_have_dirfd)
if test "$dbus_have_dirfd" = yes; then
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	AC_DEFINE(HAVE_DIRFD,1,[Have dirfd function])
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else
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	AC_MSG_CHECKING(for DIR *dirp->dd_fd)
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	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
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#include <sys/types.h>
#include <dirent.h>
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	]], [[
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DIR *dirp;
int fd;
dirp = opendir(".");
fd = dirp->dd_fd;
closedir(dirp);
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        ]])],
        [dbus_have_ddfd=yes],
        [dbus_have_ddfd=no])
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	AC_MSG_RESULT($dbus_have_ddfd)
	if test "$dbus_have_ddfd" = yes; then
		AC_DEFINE(HAVE_DDFD,1,[Have the ddfd member of DIR])
	fi
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fi
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AC_CHECK_HEADERS(sys/resource.h)

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AC_CHECK_HEADERS(dirent.h)

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AC_CHECK_HEADERS(execinfo.h, [AC_CHECK_FUNCS(backtrace)])

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AC_CHECK_HEADERS(errno.h)

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AC_CHECK_HEADERS(signal.h)

AC_CHECK_HEADERS(locale.h)

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AC_CHECK_HEADERS(byteswap.h)

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AC_CHECK_HEADERS(unistd.h)

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AC_CHECK_HEADERS(ws2tcpip.h)

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AC_CHECK_HEADERS(wspiapi.h)

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# Add -D_POSIX_PTHREAD_SEMANTICS if on Solaris
#
case $host_os in
    solaris*)
       CFLAGS="$CFLAGS -D_POSIX_PTHREAD_SEMANTICS" ;;
esac
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# checking for a posix version of getpwnam_r
# if we are cross compiling and can not run the test
# assume getpwnam_r is the posix version
# it is up to the person cross compiling to change
# this behavior if desired
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AC_LANG_PUSH(C)
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AC_CACHE_CHECK([for posix getpwnam_r],
		ac_cv_func_posix_getpwnam_r,
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		[AC_RUN_IFELSE([AC_LANG_PROGRAM(
[[
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#include <errno.h>
#include <pwd.h>
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]],
[[
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    char buffer[10000];
    struct passwd pwd, *pwptr = &pwd;
    int error;
    errno = 0;
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    error = getpwnam_r ("", &pwd, buffer,
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                        sizeof (buffer), &pwptr);
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   return (error < 0 && errno == ENOSYS)
	   || error == ENOSYS;
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]])],
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	[ac_cv_func_posix_getpwnam_r=yes],
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	[ac_cv_func_posix_getpwnam_r=no],
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        [ac_cv_func_posix_getpwnam_r=yes]
)])
AC_LANG_POP(C)

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if test "$ac_cv_func_posix_getpwnam_r" = yes; then
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        AC_DEFINE(HAVE_POSIX_GETPWNAM_R,1,
                [Have POSIX function getpwnam_r])
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else
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        AC_CACHE_CHECK([for nonposix getpwnam_r],
                ac_cv_func_nonposix_getpwnam_r,
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                [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pwd.h>]], [[char buffer[10000];
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                        struct passwd pwd;
                        getpwnam_r ("", &pwd, buffer,
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                                        sizeof (buffer));]])],
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                        [ac_cv_func_nonposix_getpwnam_r=yes],
                        [ac_cv_func_nonposix_getpwnam_r=no])])
                if test "$ac_cv_func_nonposix_getpwnam_r" = yes; then
                AC_DEFINE(HAVE_NONPOSIX_GETPWNAM_R,1,
                        [Have non-POSIX function getpwnam_r])
        fi
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fi
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dnl check for socklen_t
AC_MSG_CHECKING(whether socklen_t is defined)
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
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#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
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]], [[
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socklen_t foo;
foo = 1;
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]])],
[dbus_have_socklen_t=yes],
[dbus_have_socklen_t=no])
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AC_MSG_RESULT($dbus_have_socklen_t)

if test "x$dbus_have_socklen_t" = "xyes"; then
    AC_DEFINE(HAVE_SOCKLEN_T,1,[Have socklen_t type])
fi

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dnl check for writev header and writev function so we're
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dnl good to go if HAVE_WRITEV gets defined.
AC_CHECK_HEADERS(sys/uio.h, [AC_CHECK_FUNCS(writev)])

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dnl needed on darwin for NAME_MAX
AC_CHECK_HEADERS(sys/syslimits.h)

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dnl Make it easy to check if we have MSG_NOSIGNAL without actually having to include sys/socket.h
AC_CHECK_DECLS([MSG_NOSIGNAL], [], [], [[ #include <sys/socket.h> ]])

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dnl check for flavours of varargs macros (test from GLib)
AC_MSG_CHECKING(for ISO C99 varargs macros in C)
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[
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int a(int p1, int p2, int p3);
#define call_a(...) a(1,__VA_ARGS__)
call_a(2,3);
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]])],
[dbus_have_iso_c_varargs=yes],
[dbus_have_iso_c_varargs=no])
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AC_MSG_RESULT($dbus_have_iso_c_varargs)

AC_MSG_CHECKING(for GNUC varargs macros)
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[
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int a(int p1, int p2, int p3);
#define call_a(params...) a(1,params)
call_a(2,3);
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]])],
[dbus_have_gnuc_varargs=yes],
[dbus_have_gnuc_varargs=no])
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AC_MSG_RESULT($dbus_have_gnuc_varargs)

dnl Output varargs tests
if test x$dbus_have_iso_c_varargs = xyes; then
    AC_DEFINE(HAVE_ISO_VARARGS,1,[Have ISO C99 varargs macros])
fi
if test x$dbus_have_gnuc_varargs = xyes; then
    AC_DEFINE(HAVE_GNUC_VARARGS,1,[Have GNU-style varargs macros])
fi

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dnl Check for various credentials.
AC_MSG_CHECKING(for struct cmsgcred)
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
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#include <sys/types.h>
#include <sys/socket.h>
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]], [[
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struct cmsgcred cred;

cred.cmcred_pid = 0;
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]])],
[dbus_have_struct_cmsgcred=yes],
[dbus_have_struct_cmsgcred=no])
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AC_MSG_RESULT($dbus_have_struct_cmsgcred)

if test x$dbus_have_struct_cmsgcred = xyes; then
    AC_DEFINE(HAVE_CMSGCRED,1,[Have cmsgcred structure])
fi
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AC_CHECK_FUNCS(getpeerucred getpeereid)
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AC_CHECK_FUNCS(pipe2 accept4)
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#### Abstract sockets

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if test x$enable_abstract_sockets = xauto; then
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AC_LANG_PUSH(C)
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warn_on_xcompile=no
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AC_CACHE_CHECK([abstract socket namespace],
		ac_cv_have_abstract_sockets,
		[AC_RUN_IFELSE([AC_LANG_PROGRAM(
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[[
#include <sys/types.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <errno.h>
]],
[[
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  size_t slen;
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  int listen_fd;
  struct sockaddr_un addr;
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  listen_fd = socket (PF_UNIX, SOCK_STREAM, 0);
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  if (listen_fd < 0)
    {
      fprintf (stderr, "socket() failed: %s\n", strerror (errno));
      exit (1);
    }

  memset (&addr, '\0', sizeof (addr));
  addr.sun_family = AF_UNIX;
  strcpy (addr.sun_path, "X/tmp/dbus-fake-socket-path-used-in-configure-test");
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  /* SUN_LEN uses strlen() so need to calculate it before adding \0 at the
   * beginning.
   */
  slen = SUN_LEN(&addr);
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  addr.sun_path[0] = '\0'; /* this is what makes it abstract */
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  if (bind (listen_fd, (struct sockaddr*) &addr, slen) < 0)
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    {
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       fprintf (stderr, "Abstract socket namespace bind() failed: %s\n",
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                strerror (errno));
       exit (1);
    }
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  else
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    exit (0);
]])],
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              [ac_cv_have_abstract_sockets=yes],
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              [ac_cv_have_abstract_sockets=no],
              [
                ac_cv_have_abstract_sockets=no
                warn_on_xcompile=yes
              ]
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)])
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if test x$warn_on_xcompile = xyes ; then
  AC_MSG_WARN([Cannot check for abstract sockets when cross-compiling, please use --enable-abstract-sockets])
fi
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AC_LANG_POP(C)
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fi
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if test x$enable_abstract_sockets = xyes; then
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    if test x$ac_cv_have_abstract_sockets = xno; then
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	AC_MSG_ERROR([Abstract sockets explicitly required, and support not detected.])
    fi
fi

if test x$enable_abstract_sockets = xno; then
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   ac_cv_have_abstract_sockets=no;
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fi

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if test x$ac_cv_have_abstract_sockets = xyes ; then
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   DBUS_PATH_OR_ABSTRACT=abstract
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   AC_DEFINE(HAVE_ABSTRACT_SOCKETS,1,[Have abstract socket namespace])
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else
   DBUS_PATH_OR_ABSTRACT=path
fi

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# this is used in addresses to prefer abstract, e.g.
# unix:path=/foo or unix:abstract=/foo
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AC_SUBST(DBUS_PATH_OR_ABSTRACT)

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PKG_PROG_PKG_CONFIG

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#### Sort out XML library

# see what we have
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AC_CHECK_LIB(expat, XML_ParserCreate_MM,
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             [ AC_CHECK_HEADERS(expat.h, have_expat=true, have_expat=false) ],
             have_expat=false)

# see what we want to use
dbus_use_libxml=false
dbus_use_expat=false
if test x$with_xml = xexpat; then
        if ! $have_expat ; then
           AC_MSG_ERROR([Explicitly requested expat but expat not found])
        fi
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        dbus_use_expat=true
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elif test x$with_xml = xlibxml; then
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        PKG_CHECK_MODULES(LIBXML, libxml-2.0 >= 2.6.0, have_libxml=true, have_libxml=false)
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        if ! $have_libxml ; then
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           AC_MSG_ERROR([Explicitly requested libxml but libxml not found])
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        fi
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        dbus_use_libxml=true
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else
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        ### expat is the default because libxml can't currently survive
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        ### our brutal OOM-handling unit test setup.
        ### http://bugzilla.gnome.org/show_bug.cgi?id=109368
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        if test x$have_expat = xfalse; then
                AC_MSG_ERROR([Could not find expat.h, check config.log for failed attempts])
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        fi
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	### By default, only use Expat since it's tested and known to work.  If you're a
	### general-purpose OS vendor, please don't enable libxml.  For embedded use
	### if your OS is built around libxml, that's another case.
	dbus_use_expat=true
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fi

AM_CONDITIONAL(DBUS_USE_EXPAT, $dbus_use_expat)
AM_CONDITIONAL(DBUS_USE_LIBXML, $dbus_use_libxml)

if $dbus_use_expat; then
   XML_LIBS=-lexpat
   XML_CFLAGS=
fi
if $dbus_use_libxml; then
   XML_LIBS=$LIBXML_LIBS
   XML_CFLAGS=$LIBXML_CFLAGS
fi

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# Thread lib detection
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AC_CHECK_FUNC(pthread_cond_timedwait,[AC_CHECK_LIB(pthread,pthread_cond_timedwait,
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                                                    [THREAD_LIBS="-lpthread"])])
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save_libs="$LIBS"
LIBS="$LIBS $THREAD_LIBS"
AC_CHECK_FUNC(pthread_condattr_setclock,have_pthread_condattr_setclock=true,have_pthread_condattr_setclock=false)
if test x$have_pthread_condattr_setclock = xtrue; then
    AC_SEARCH_LIBS([clock_getres],[rt],[THREAD_LIBS="$THREAD_LIBS -lrt"])
    AC_MSG_CHECKING([for CLOCK_MONOTONIC])
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    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <time.h>
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#include <pthread.h>
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]], [[
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struct timespec monotonic_timer;
pthread_condattr_t attr;
pthread_condattr_init (&attr);
pthread_condattr_setclock (&attr, CLOCK_MONOTONIC);
clock_getres (CLOCK_MONOTONIC,&monotonic_timer);
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]])],
[have_clock_monotonic=true],
[have_clock_monotonic=false])
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if test x$have_clock_monotonic = xtrue; then
    AC_MSG_RESULT([found])
    AC_DEFINE(HAVE_MONOTONIC_CLOCK, 1, [Define if we have CLOCK_MONOTONIC])
else
    AC_MSG_RESULT([not found])
fi
fi
LIBS="$save_libs"
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# SELinux detection
if test x$enable_selinux = xno ; then
    have_selinux=no;
else
    # See if we have SELinux library
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    AC_CHECK_LIB(selinux, is_selinux_enabled,
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                 have_selinux=yes, have_selinux=no)

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    # see if we have the SELinux header with the new D-Bus stuff in it
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    if test x$have_selinux = xyes ; then
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        AC_MSG_CHECKING([for DBUS Flask permissions in selinux/av_permissions.h])
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        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <selinux/av_permissions.h>]],
                          [[#ifdef DBUS__ACQUIRE_SVC return 0;
			    #else
			    #error DBUS__ACQUIRE_SVC not defined
			    #endif]])],
                          [have_selinux=yes],
                          [have_selinux=no])
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	AC_MSG_RESULT($have_selinux)
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    fi

    if test x$enable_selinux = xauto ; then
        if test x$have_selinux = xno ; then
                AC_MSG_WARN([Sufficiently new SELinux library not found])
        fi
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    else
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        if test x$have_selinux = xno ; then
                AC_MSG_ERROR([SElinux explicitly required, and SELinux library not found])
        fi
    fi
fi

AM_CONDITIONAL(HAVE_SELINUX, test x$have_selinux = xyes)

if test x$have_selinux = xyes ; then
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    # the selinux code creates threads
    # which requires libpthread even on linux
    AC_CHECK_FUNC(pthread_create,,[AC_CHECK_LIB(pthread,pthread_create,
                                                [SELINUX_THREAD_LIBS="-lpthread"])])

    SELINUX_LIBS="-lselinux $SELINUX_THREAD_LIBS"
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    AC_DEFINE(HAVE_SELINUX,1,[SELinux support])
else
    SELINUX_LIBS=
fi

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# inotify checks
if test x$enable_inotify = xno ; then
    have_inotify=no;
else
    AC_CHECK_HEADERS(sys/inotify.h, have_inotify=yes, have_inotify=no)
fi

dnl check if inotify backend is enabled
if test x$have_inotify = xyes; then
   AC_DEFINE(DBUS_BUS_ENABLE_INOTIFY,1,[Use inotify])
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   AC_CHECK_FUNCS(inotify_init1)
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fi

AM_CONDITIONAL(DBUS_BUS_ENABLE_INOTIFY, test x$have_inotify = xyes)

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# dnotify checks
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if test x$enable_dnotify = xno ; then
    have_dnotify=no;
else
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    if test x$have_inotify = xno -a x$host_os = xlinux-gnu -o x$host_os = xlinux; then
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        have_dnotify=yes;
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    else
        have_dnotify=no;
    fi
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fi
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dnl check if dnotify backend is enabled
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if test x$have_dnotify = xyes; then
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   AC_DEFINE(DBUS_BUS_ENABLE_DNOTIFY_ON_LINUX,1,[Use dnotify on Linux])
fi

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AM_CONDITIONAL(DBUS_BUS_ENABLE_DNOTIFY_ON_LINUX, test x$have_dnotify = xyes)

# kqueue checks
if test x$enable_kqueue = xno ; then
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    have_kqueue=no
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else
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    have_kqueue=yes
    AC_CHECK_HEADER(sys/event.h, , have_kqueue=no)
    AC_CHECK_FUNC(kqueue, , have_kqueue=no)

    if test x$enable_kqueue = xyes -a x$have_kqueue = xno; then
        AC_MSG_ERROR(kqueue support explicitly enabled but not available)
    fi
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fi

dnl check if kqueue backend is enabled
if test x$have_kqueue = xyes; then
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   AC_DEFINE(DBUS_BUS_ENABLE_KQUEUE,1,[Use kqueue])
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fi

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AM_CONDITIONAL(DBUS_BUS_ENABLE_KQUEUE, test x$have_kqueue = xyes)
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# launchd checks
if test x$enable_launchd = xno ; then
    have_launchd=no
else
    have_launchd=yes
    AC_CHECK_HEADER([launch.h], , have_launchd=no)
    AC_PATH_PROG([LAUNCHCTL], [launchctl])
    if test "x$LAUNCHCTL" = "x"; then
        have_launchd=no
    fi

    if test x$enable_launchd = xyes && test x$have_launchd = xno ; then
        AC_MSG_ERROR([launchd support explicitly enabled but not available])
    fi
fi

dnl check if launchd is enabled
if test x$have_launchd = xyes; then
    AC_DEFINE(DBUS_ENABLE_LAUNCHD,1,[Use launchd autolaunch])
fi

AM_CONDITIONAL(DBUS_ENABLE_LAUNCHD, test x$have_launchd = xyes)

#### Directory to place launchd agent file
if test "x$with_launchd_agent_dir" = "x"; then
   LAUNCHD_AGENT_DIR="/Library/LaunchAgents"
else
   LAUNCHD_AGENT_DIR="$with_launchd_agent_dir"
fi

AC_SUBST(LAUNCHD_AGENT_DIR)

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dnl console owner file
if test x$enable_console_owner_file = xno ; then
    have_console_owner_file=no;
else
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    case $host_os in
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    solaris*)
        have_console_owner_file=yes;
        AC_DEFINE(HAVE_CONSOLE_OWNER_FILE,1,[Have console owner file])
        ;;
    *)
        have_console_owner_file=no;;
    esac
fi

AM_CONDITIONAL(HAVE_CONSOLE_OWNER_FILE, test x$have_console_owner_file = xyes)

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# libaudit detection
if test x$enable_libaudit = xno ; then
    have_libaudit=no;
else
    # See if we have audit daemon & capabilities library
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    AC_CHECK_LIB(audit, audit_log_user_avc_message,
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                 have_libaudit=yes, have_libaudit=no)
    if test x$have_libaudit = xyes ; then
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        AC_CHECK_LIB(cap-ng, capng_clear,
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                 have_libaudit=yes, have_libaudit=no)
    fi
fi

AM_CONDITIONAL(HAVE_LIBAUDIT, test x$have_libaudit = xyes)

if test x$have_libaudit = xyes ; then
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    SELINUX_LIBS="$SELINUX_LIBS -laudit -lcap-ng"
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    AC_DEFINE(HAVE_LIBAUDIT,1,[audit daemon SELinux support])
fi

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# Check for ADT API
AC_MSG_CHECKING(for ADT API)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <bsm/adt.h>
adt_user_context = ADT_USER;
]], [[]])], [ check_adt_audit=yes ], [ check_adt_audit=no ])

if test ${check_adt_audit} = yes
then
   AC_DEFINE([HAVE_ADT], [], [Adt audit API])
   ADT_LIBS="-lbsm"
   LIBS="-lbsm $LIBS"
   AC_MSG_RESULT(yes)
else
   AC_MSG_RESULT(no)
fi

1107 1108 1109 1110 1111 1112 1113 1114 1115 1116
# Check for SCM_RIGHTS
AC_MSG_CHECKING([for SCM_RIGHTS])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/socket.h>
#include <sys/un.h>
static int x = SCM_RIGHTS;
]], [[]])],
[ AC_MSG_RESULT([supported])
  AC_DEFINE([HAVE_UNIX_FD_PASSING], [1], [Supports sending UNIX file descriptors]) ],
[ AC_MSG_RESULT([not supported]) ])
1117

1118 1119
NETWORK_libs=
if test x$dbus_win = xyes ; then
1120 1121 1122 1123 1124
  if test x$dbus_wince = xyes ; then
    NETWORK_libs="-lws2"
  else
    NETWORK_libs="-lws2_32"
  fi
1125 1126
fi

1127
#### Set up final flags
1128
DBUS_CLIENT_CFLAGS=
1129
DBUS_CLIENT_LIBS="$THREAD_LIBS $NETWORK_libs"
1130 1131 1132
AC_SUBST(DBUS_CLIENT_CFLAGS)
AC_SUBST(DBUS_CLIENT_LIBS)

1133
DBUS_BUS_CFLAGS="$XML_CFLAGS"
1134
DBUS_BUS_LIBS="$XML_LIBS $SELINUX_LIBS $THREAD_LIBS $ADT_LIBS $NETWORK_libs"
1135 1136
AC_SUBST(DBUS_BUS_CFLAGS)
AC_SUBST(DBUS_BUS_LIBS)
1137

1138
DBUS_LAUNCHER_CFLAGS="$XML_CFLAGS"
1139
DBUS_LAUNCHER_LIBS="$XML_LIBS $THREAD_LIBS $NETWORK_libs"
1140 1141 1142
AC_SUBST(DBUS_LAUNCHER_CFLAGS)
AC_SUBST(DBUS_LAUNCHER_LIBS)

1143
DBUS_TEST_CFLAGS=
1144
DBUS_TEST_LIBS="$THREAD_LIBS $NETWORK_libs"
1145 1146 1147
AC_SUBST(DBUS_TEST_CFLAGS)
AC_SUBST(DBUS_TEST_LIBS)

1148
### X11 detection
1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159
DBUS_X_LIBS=
DBUS_X_CFLAGS=

AC_ARG_ENABLE([x11-autolaunch],
  AS_HELP_STRING([--enable-x11-autolaunch], [build with X11 auto-launch support]),
  [], [enable_x11_autolaunch=auto])

if test "x$dbus_win" = xyes; then
    if test "x$enable_x11_autolaunch" = xyes; then
        AC_MSG_ERROR([X11 auto-launch is not supported on Windows])
    fi
1160

1161 1162
    enable_x11_autolaunch=no
    have_x11=no
1163
else
1164 1165 1166 1167 1168 1169 1170 1171 1172
    AC_PATH_XTRA

    if test "x$no_x" = xyes; then
        have_x11=no
    else
        have_x11=yes
        DBUS_X_LIBS="$X_LIBS $X_PRE_LIBS -lX11 $X_EXTRA_LIBS"
        DBUS_X_CFLAGS="$X_CFLAGS"
    fi
1173 1174
fi

1175 1176
if test "x$enable_x11_autolaunch,$have_x11" = xyes,no; then
    AC_MSG_ERROR([X11 auto-launch requires X headers/libraries])
1177
else
1178
    # move from "auto" to "yes" or "no" if necessary
1179 1180 1181 1182 1183 1184 1185
    if test "x$enable_x11_autolaunch" != xno; then
        enable_x11_autolaunch="$have_x11"
    fi
fi

if test "x$have_x11" = xyes ; then
   AC_DEFINE([DBUS_BUILD_X11], [1], [Define to build X11 functionality])
1186 1187
fi

1188
if test "x$enable_x11_autolaunch" = xyes ; then
1189
   AC_DEFINE([DBUS_ENABLE_X11_AUTOLAUNCH], [1], [Define to enable X11 auto-launch])
1190
fi
1191

1192 1193
AC_SUBST([DBUS_X_CFLAGS])
AC_SUBST([DBUS_X_LIBS])
1194 1195 1196 1197

#### gcc warning flags

cc_supports_flag() {
1198 1199 1200 1201 1202 1203 1204
  AC_MSG_CHECKING(whether $CC supports "$*")
  save_CFLAGS="$CFLAGS"
  CFLAGS="$*"
  AC_TRY_COMPILE([], [], [rc=yes], [rc=no])
  CFLAGS="$save_CFLAGS"
  AC_MSG_RESULT([$rc])
  test "x$rc" = xyes
1205 1206
}

1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225
TP_COMPILER_WARNINGS([WARNING_CFLAGS],
  dnl Use -Werror by default if:
  dnl - we're not on Windows (too many warnings), and
  dnl - we're in maintainer mode (a D-Bus developer, not a distro or end-user)
  dnl Override with --enable-Werror or --disable-Werror
  [test x$dbus_win != xyes -a x$dbus_cygwin != xyes -a x$USE_MAINTAINER_MODE = xyes],

  dnl enable these warnings if possible:
  [all \
   char-subscripts \
   missing-declarations \
   missing-prototypes \
   nested-externs \
   pointer-arith \
   cast-align \
   no-address \
   float-equal \
   declaration-after-statement \
  ],
1226

1227 1228 1229 1230 1231 1232 1233
  dnl disable these warnings if possible, make them non-fatal if possible,
  dnl and don't enable -Werror unless we succeeded:
  dnl (unused is by design, sign-compare and pointer-sign are fd.o #17433)
  [unused \
   sign-compare \
   pointer-sign \
  ])