meson: add dbus build dependency

Convert #if VAL into #ifdef VAL in order to make meson more readable and
because it's not necessary to have both defines existing.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Neal Gompa <ngompa13@gmail.com>

configure.ac

@@ -114,7 +114,6 @@ fi
 
 # Check for compiler and library settings.
 
-LIBVIRT_ARG_DBUS
 LIBVIRT_ARG_FIREWALLD
 LIBVIRT_ARG_FIREWALLD_ZONE
 LIBVIRT_ARG_FUSE
@@ -142,7 +141,6 @@ LIBVIRT_ARG_VIRTUALPORT
 LIBVIRT_ARG_WIRESHARK
 LIBVIRT_ARG_YAJL
 
-LIBVIRT_CHECK_DBUS
 LIBVIRT_CHECK_DEVMAPPER
 LIBVIRT_CHECK_DLOPEN
 LIBVIRT_CHECK_FIREWALLD
@@ -461,7 +459,6 @@ LIBVIRT_RESULT_DRIVER_MODULES
 AC_MSG_NOTICE([])
 AC_MSG_NOTICE([Libraries])
 AC_MSG_NOTICE([])
-LIBVIRT_RESULT_DBUS
 LIBVIRT_RESULT_DLOPEN
 LIBVIRT_RESULT_FIREWALLD
 LIBVIRT_RESULT_FIREWALLD_ZONE

m4/virt-dbus.m4

@@ -1,41 +0,0 @@
-dnl The libdbus.so library
-dnl
-dnl Copyright (C) 2012-2014 Red Hat, Inc.
-dnl
-dnl This library is free software; you can redistribute it and/or
-dnl modify it under the terms of the GNU Lesser General Public
-dnl License as published by the Free Software Foundation; either
-dnl version 2.1 of the License, or (at your option) any later version.
-dnl
-dnl This library is distributed in the hope that it will be useful,
-dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
-dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-dnl Lesser General Public License for more details.
-dnl
-dnl You should have received a copy of the GNU Lesser General Public
-dnl License along with this library.  If not, see
-dnl <http://www.gnu.org/licenses/>.
-dnl
-
-AC_DEFUN([LIBVIRT_ARG_DBUS],[
-  LIBVIRT_ARG_WITH_FEATURE([DBUS], [dbus-1], [check], [1.0.0])
-])
-
-AC_DEFUN([LIBVIRT_CHECK_DBUS],[
-  LIBVIRT_CHECK_PKG([DBUS], [dbus-1], [1.0.0])
-
-  if test "$with_dbus" = "yes" ; then
-    old_CFLAGS="$CFLAGS"
-    old_LIBS="$LIBS"
-    CFLAGS="$CFLAGS $DBUS_CFLAGS"
-    LIBS="$LIBS $DBUS_LIBS"
-    AC_CHECK_FUNCS([dbus_watch_get_unix_fd])
-    AC_CHECK_TYPES([DBusBasicValue], [], [], [[#include <dbus/dbus.h>]])
-    CFLAGS="$old_CFLAGS"
-    LIBS="$old_LIBS"
-  fi
-])
-
-AC_DEFUN([LIBVIRT_RESULT_DBUS],[
-  LIBVIRT_RESULT_LIB([DBUS])
-])

meson.build

@@ -1011,6 +1011,22 @@ if curl_dep.found()
   conf.set('WITH_CURL', 1)
 endif
 
+dbus_version = '1.0.0'
+dbus_dep = dependency('dbus-1', version: '>=' + dbus_version, required: get_option('dbus'))
+if dbus_dep.found()
+  conf.set('WITH_DBUS', 1)
+
+  function = 'dbus_watch_get_unix_fd'
+  if cc.has_function(function, dependencies: dbus_dep)
+    conf.set('HAVE_@0@'.format(function.to_upper()), 1)
+  endif
+
+  type = 'DBusBasicValue'
+  if cc.has_type(type, dependencies: dbus_dep, prefix: '#include <dbus/dbus.h>')
+    conf.set('HAVE_@0@'.format(type.to_upper()), 1)
+  endif
+endif
+
 # readline 7.0 is the first version which includes pkg-config support
 readline_version = '7.0'
 readline_dep = dependency('readline', version: '>=' + readline_version, required: false)
@@ -1128,6 +1144,7 @@ libs_summary = {
   'blkid': blkid_dep.found(),
   'capng': capng_dep.found(),
   'curl': curl_dep.found(),
+  'dbus': dbus_dep.found(),
   'readline': readline_dep.found(),
 }
 summary(libs_summary, section: 'Libraries', bool_yn: true)

meson_options.txt

@@ -18,6 +18,7 @@ option('bash_completion_dir', type: 'string', value: '', description: 'directory
 option('blkid', type: 'feature', value: 'auto', description: 'blkid support')
 option('capng', type: 'feature', value: 'auto', description: 'cap-ng support')
 option('curl', type: 'feature', value: 'auto', description: 'curl support')
+option('dbus', type: 'feature', value: 'auto', description: 'dbus-1 support')
 option('readline', type: 'feature', value: 'auto', description: 'readline support')