meson: add yajl build dependency

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

configure.ac

@@ -109,11 +109,9 @@ fi
 
 LIBVIRT_ARG_NSS
 LIBVIRT_ARG_PM_UTILS
-LIBVIRT_ARG_YAJL
 
 LIBVIRT_CHECK_NWFILTER
 LIBVIRT_CHECK_PM_UTILS
-LIBVIRT_CHECK_YAJL
 
 
 
@@ -390,7 +388,6 @@ LIBVIRT_RESULT_LIBXL
 LIBVIRT_RESULT_NSS
 LIBVIRT_RESULT_PM_UTILS
 LIBVIRT_RESULT_RBD
-LIBVIRT_RESULT_YAJL
 AC_MSG_NOTICE([])
 AC_MSG_NOTICE([Windows])
 AC_MSG_NOTICE([])

m4/virt-yajl.m4

@@ -1,42 +0,0 @@
-dnl The libyajl.so library
-dnl
-dnl Copyright (C) 2012-2013 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_YAJL],[
-  LIBVIRT_ARG_WITH_FEATURE([YAJL], [yajl], [check])
-])
-
-AC_DEFUN([LIBVIRT_CHECK_YAJL],[
-  dnl YAJL JSON library http://lloyd.github.com/yajl/
-
-  PKG_CHECK_EXISTS([yajl], [use_pkgconfig=1], [use_pkgconfig=0])
-
-  if test $use_pkgconfig = 1; then
-    dnl 2.0.3 was the version where the pkg-config file was first added
-    LIBVIRT_CHECK_PKG([YAJL], [yajl], [2.0.3])
-  else
-    dnl SLES 12 and openSUSE Leap 42.3 still use 2.0.1
-    dnl TODO: delete this in July 2020
-    LIBVIRT_CHECK_LIB([YAJL], [yajl],
-                      [yajl_tree_parse], [yajl/yajl_common.h])
-  fi
-])
-
-AC_DEFUN([LIBVIRT_RESULT_YAJL],[
-  LIBVIRT_RESULT_LIB([YAJL])
-])

meson.build

@@ -1472,6 +1472,30 @@ else
   xdr_dep = declare_dependency()
 endif
 
+yajl_version = '2.0.3'
+if not get_option('yajl').disabled()
+  yajl_dep = dependency('yajl', version: '>=' + yajl_version, required: false)
+  # 2.0.3 was the version where the pkg-config file was first added
+  # SLES 12 and openSUSE Leap 42.3 still use 2.0.1
+  # TODO: delete this in July 2020
+  if not yajl_dep.found()
+    yajl_dep = cc.find_library('yajl', required: get_option('yajl'))
+    if yajl_dep.found()
+      has_func = cc.has_function('yajl_tree_parse', dependencies: yajl_dep, prefix: '#include <yajl/yajl_common.h>')
+      if not has_func and get_option('yajl').enabled()
+        error('yajl >= @0@ was not found'.format(yajl_version))
+      elif not has_func
+        yajl_dep = dependency('', required: false)
+      endif
+    endif
+  endif
+else
+  yajl_dep = dependency('', required: false)
+endif
+if yajl_dep.found()
+  conf.set('WITH_YAJL', 1)
+endif
+
 
 # generic build dependencies checks
 
@@ -1588,6 +1612,7 @@ libs_summary = {
   'udev': udev_dep.found(),
   'virtualport': conf.has('WITH_VIRTUALPORT'),
   'xdr': xdr_dep.found(),
+  'yajl': yajl_dep.found(),
 }
 summary(libs_summary, section: 'Libraries', bool_yn: true)
 

meson_options.txt

@@ -44,6 +44,7 @@ option('udev', type: 'feature', value: 'auto', description: 'udev support')
 option('virtualport', type: 'feature', value: 'auto', description: 'enable virtual port support')
 option('wireshark_dissector', type: 'feature', value: 'auto', description: 'wireshark support')
 option('wireshark_plugindir', type: 'string', value: '', description: 'wireshark plugins directory for use when installing wireshark plugin')
+option('yajl', type: 'feature', value: 'auto', description: 'yajl support')
 
 
 # build driver options