terminology.desktop: set full path of icon

data/desktop/meson.build

@@ -1,2 +1,12 @@
-install_data('terminology.desktop',
-             install_dir: join_paths(get_option('datadir'), 'applications'))
+icon_sed = 's~%ICON_PATH%~@0@~'.format(join_paths(get_option('prefix'),
+                                                  get_option('datadir'),
+                                                  'icons/hicolor/128x128/apps'))
+
+custom_target(
+  'terminology.desktop',
+  input : 'terminology.desktop.in',
+  output: 'terminology.desktop',
+  command : [sed, icon_sed, '@INPUT@'],
+  capture : true,
+  install : true,
+  install_dir : join_paths(get_option('datadir'), 'applications'))

data/desktop/terminology.desktop.in

@@ -19,6 +19,6 @@ Comment[ru]=Эмулятор терминала
 Comment[ko]=터미널 에뮬레이터
 Keywords=shell;prompt;command;commandline;
 Exec=terminology
-Icon=terminology
+Icon=%ICON_PATH%/terminology.png
 Categories=System;TerminalEmulator;
 StartupWMClass=terminology

meson.build

@@ -127,6 +127,8 @@ endif
 
 message('edje_cc set to:' + edje_cc)
 
+sed = find_program('sed')
+
 configure_file(output: 'terminology_config.h',
                configuration: config_data)