meson: make it possible to set the path for eet

Follow the approach of edje_cc and eldbus-codegen which detecting the
eet binary.

config/default/meson.build

@@ -10,7 +10,7 @@ foreach cd: src
   custom_target(' '.join(['config_dist', dir, cd]),
 		input      : cd + '.src',
 		output     : cd + '.cfg',
-		command    : [eet, '-e', '@OUTPUT@', 'config', '@INPUT@', '1'],
+		command    : [eet_cmd, '-e', '@OUTPUT@', 'config', '@INPUT@', '1'],
 		install    : true,
 		install_dir: join_paths(dir_config, dir)
                )

config/meson.build

@@ -1,13 +1,14 @@
 dir_config = join_paths(dir_data, 'enlightenment/data/config')
 
-eet = find_program('eet')
-gen_eet = generator(eet,
-                    output   : '@BASENAME@.cfg',
-                    arguments: ['-e', '@OUTPUT@', 'config', '@INPUT@', '1'])
+eet_cmd = get_option('eet')
+if eet_cmd == ''
+  eet_cmd = join_paths(dep_eet.get_pkgconfig_variable('prefix'),
+                        'bin', 'eet')
+endif
 
 custom_target('profile.src',
               input      : 'profile.src',
-              command    : [eet, '-i', '@OUTPUT@', 'config', '@INPUT@', '1'],
+              command    : [eet_cmd, '-i', '@OUTPUT@', 'config', '@INPUT@', '1'],
               output     : ['profile.cfg'],
               install    : true,
               install_dir: dir_config

config/mobile/meson.build

@@ -12,7 +12,7 @@ foreach cd: src
   custom_target(' '.join(['config_dist', dir, cd]),
 		input      : cd + '.src',
 		output     : cd + '.cfg',
-		command    : [eet, '-e', '@OUTPUT@', 'config', '@INPUT@', '1'],
+		command    : [eet_cmd, '-e', '@OUTPUT@', 'config', '@INPUT@', '1'],
 		install    : true,
 		install_dir: join_paths(dir_config, dir)
                )

config/standard/meson.build

@@ -18,7 +18,7 @@ foreach cd: src
   custom_target(' '.join(['config_dist', dir, cd]),
 		input      : cd + '.src',
 		output     : cd + '.cfg',
-		command    : [eet, '-e', '@OUTPUT@', 'config', '@INPUT@', '1'],
+		command    : [eet_cmd, '-e', '@OUTPUT@', 'config', '@INPUT@', '1'],
 		install    : true,
 		install_dir: join_paths(dir_config, dir)
                )

config/tiling/meson.build

@@ -19,7 +19,7 @@ foreach cd: src
   custom_target(' '.join(['config_dist', dir, cd]),
 		input      : cd + '.src',
 		output     : cd + '.cfg',
-		command    : [eet, '-e', '@OUTPUT@', 'config', '@INPUT@', '1'],
+		command    : [eet_cmd, '-e', '@OUTPUT@', 'config', '@INPUT@', '1'],
 		install    : true,
 		install_dir: join_paths(dir_config, dir)
                )

meson_options.txt

@@ -23,6 +23,10 @@ option('eldbus-codegen',
        type       : 'string',
        description: 'A path to a eldbus-codegen. Defaults to system eldbus-codegen')
 
+option('eet',
+       type       : 'string',
+       description: 'A path to a eet. Defaults to system eet')
+
 option('pam',
 	type: 'boolean',
 	value: true,