add meson build options to build for flathub

meson_options.txt

@@ -3,6 +3,7 @@ option(
   type: 'combo',
   choices: [
     'default',
+    'flathub',
     'development'
   ],
   value: 'default',

src/meson.build

@@ -25,12 +25,19 @@ if get_option('profile') == 'default'
   cargo_options += [ '--release' ]
   rust_target = 'release'
   message('Building in release mode')
-else
+  cargo_env = [ 'CARGO_HOME=' + meson.project_build_root() / 'cargo-home' ]
+endif
+if get_option('profile') == 'flathub'
+  cargo_options += [ '--release', '--offline' ]
+  rust_target = 'release'
+  message('Building in flathub release mode')
+  cargo_env = [ 'CARGO_HOME=/run/build/toolbx-tuner/cargo' ]
+endif
+if get_option('profile') == 'development'
   rust_target = 'debug'
   message('Building in debug mode')
-endif
-
   cargo_env = [ 'CARGO_HOME=' + meson.project_build_root() / 'cargo-home' ]
+endif
 
 cargo_build = custom_target(
   'cargo-build',