Meson: Use configuration_data.

Meson makes this much easier and prettier. Generate a configure
file for future use.

meson.build

@@ -1,16 +1,19 @@
+##### Project
 project('evisum', 'c',
-	version: '0.3.0',
+	versioni      : '0.3.0',
 	meson_version : '>= 0.40.0')
 
 efl_version = '>= 1.22.0'
 
+cfg = configuration_data()
+
 host_os = host_machine.system()
 
 deps = dependency('elementary', version: efl_version)
 
 deps_os = declare_dependency(link_args : [] )
 if host_os == 'openbsd'
-deps_os = declare_dependency(link_args : [ '-lkvm' ])
+  deps_os = declare_dependency(link_args : [ '-lkvm' ])
 endif
 
 ##### dir locations
@@ -20,5 +23,10 @@ dir_lib    = join_paths(dir_prefix, get_option('libdir'))
 dir_data   = join_paths(dir_prefix, get_option('datadir'))
 dir_locale = join_paths(dir_prefix, get_option('localedir'))
 
+##### config.h
+
+cfg.set_quoted('PACKAGE_VERSION', meson.project_version())
+configure_file(output: 'config.h', configuration: cfg)
+
 subdir('src')
 subdir('data')

src/bin/main.c

@@ -6,8 +6,7 @@
  * See LICENSE file for details.
  */
 
-#define VERSION "0.2.6"
-
+#include "config.h"
 #include "ui.h"
 
 static void

src/bin/meson.build

@@ -1,9 +1,17 @@
+inc = include_directories('.', '../..')
+
 executable('evisum', [
-	'disks.c', 'disks.h',
-	'process.c', 'process.h',
-	'system.c', 'system.h',
-	'ui.c', 'ui.h',
-	'main.c'],
-	dependencies : [ deps, deps_os ],
-	gui_app : true,
-	install : true)
+     'disks.c',
+     'disks.h',
+     'process.c',
+     'process.h',
+     'system.c',
+     'system.h',
+     'ui.c',
+     'ui.h',
+     'main.c'
+   ],
+   include_directories : inc,
+   dependencies        : [ deps, deps_os ],
+   gui_app             : true,
+   install             : true)