add builtin support for localstatedir

Reported-by: Richard Hughes <richard@hughsie.com>
Closes: https://github.com/mesonbuild/meson/issues/1142
Signed-off-by: Igor Gnatenko <ignatenko@redhat.com>

data/macros.meson

@@ -10,17 +10,18 @@
     export LDFLAGS="%{?__global_ldflags}"      \
     mkdir -p %{__builddir}                     \
     pushd %{__builddir}                        \
-        %{__meson}                         \\\
-            --buildtype=plain              \\\
-            --prefix=%{_prefix}            \\\
-            --libdir=%{_libdir}            \\\
-            --libexecdir=%{_libexecdir}    \\\
-            --bindir=%{_bindir}            \\\
-            --includedir=%{_includedir}    \\\
-            --datadir=%{_datadir}          \\\
-            --mandir=%{_mandir}            \\\
-            --localedir=%{_datadir}/locale \\\
-            --sysconfdir=%{_sysconfdir}    \\\
+        %{__meson}                            \\\
+            --buildtype=plain                 \\\
+            --prefix=%{_prefix}               \\\
+            --libdir=%{_libdir}               \\\
+            --libexecdir=%{_libexecdir}       \\\
+            --bindir=%{_bindir}               \\\
+            --includedir=%{_includedir}       \\\
+            --datadir=%{_datadir}             \\\
+            --mandir=%{_mandir}               \\\
+            --localedir=%{_datadir}/locale    \\\
+            --sysconfdir=%{_sysconfdir}       \\\
+            --localstatedir=%{_localstatedir} \\\
             $OLDPWD/%{__sourcedir}             \
     popd
 

mesonbuild/coredata.py

@@ -212,15 +212,17 @@ builtin_options = {
         'datadir'           : [ UserStringOption, 'Data file directory.', 'share' ],
         'mandir'            : [ UserStringOption, 'Manual page directory.', 'share/man' ],
         'localedir'         : [ UserStringOption, 'Locale data directory.', 'share/locale' ],
-    # Sysconfdir is a bit special. It defaults to ${prefix}/etc but nobody
-    # uses that. Instead they always set it manually to /etc. This default
-    # value is thus pointless and not really used but we set it to this
+    # sysconfdir and localstatedir are a bit special. These defaults to ${prefix}/etc and
+    # ${prefix}/var but nobody uses that. Instead they always set it manually to /etc and /var.
+    # This default values is thus pointless and not really used but we set it to this
     # for consistency with other systems.
     #
-    # Projects installing to sysconfdir probably want to set the following in project():
+    # Projects installing to sysconfdir and/or localstatedir probably want
+    # to set the following in project():
     #
-    # default_options : ['sysconfdir=/etc']
+    # default_options : ['sysconfdir=/etc', 'localstatedir=/var']
         'sysconfdir'        : [ UserStringOption, 'Sysconf data directory.', 'etc' ],
+        'localstatedir'     : [ UserStringOption, 'Localstate data directory.', 'var' ],
         'werror'            : [ UserBooleanOption, 'Treat warnings as errors.', False ],
         'warning_level'     : [ UserComboOption, 'Compiler warning level to use.', [ '1', '2', '3' ], '1'],
         'layout'            : [ UserComboOption, 'Build directory layout.', ['mirror', 'flat' ], 'mirror' ],

mesonbuild/mconf.py

@@ -174,6 +174,7 @@ class Conf:
                     'mandir',
                     'localedir',
                     'sysconfdir',
+                    'localstatedir',
                 ]:
             parr.append([key, coredata.get_builtin_option_description(key),
                 self.coredata.get_builtin_option(key), coredata.get_builtin_option_choices(key)])

mesonbuild/mesonmain.py

@@ -46,6 +46,7 @@ add_builtin_argument('datadir')
 add_builtin_argument('mandir')
 add_builtin_argument('localedir')
 add_builtin_argument('sysconfdir')
+add_builtin_argument('localstatedir')
 add_builtin_argument('backend')
 add_builtin_argument('buildtype')
 add_builtin_argument('strip', action='store_true')