uapi: move doc target to parent meson.build file

All cargo related target and vars are in top level uapi  directory.

uapi/meson.build

@@ -29,6 +29,28 @@ uapi_manifest = files('Cargo.toml')
 subdir('include/uapi')
 subdir('src')
 
+cargo = find_program('cargo', required: true)
+cargo_fmt = find_program('cargo-fmt', required: false)
+cargo_clippy = find_program('cargo-clippy', required: false)
+cargo_index = find_program('cargo-index', required: false)
+
+if with_doc_opt
+uapi_doc = custom_target(
+  'doc-uapi',
+  input: uapi_manifest,
+  output: 'doc',
+  command: [cargo, 'doc', '--manifest-path', '@INPUT@'],
+  depend_files: [uapi_modules, uapi_libfile],
+  env: {'CARGO_TARGET_DIR':meson.current_build_dir()},
+  install: true,
+  install_dir: get_option('datadir') / 'doc/sentry-uapi',
+  install_tag: 'doc',
+)
+
+uapi_doc_alias = alias_target('doc-uapi', uapi_doc)
+
+endif # with_doc
+
 install_data(
   'task.Kconfig',
   install_dir : get_option('datadir') / 'configs',

uapi/src/meson.build

@@ -45,28 +45,7 @@ pkg_config.generate(
     extra_cflags: [ global_build_args, target_arch_args ],
 )
 
-cargo = find_program('cargo', required: true)
 
-if with_doc_opt
-gen_cargo_doc = custom_target(
-  'forge_cargo_doc',
-  output: 'doc',
-  command: [
-    cargo,
-    'doc',
-    '--lib',
-    '--package', 'sentry-uapi',
-    '--examples',
-    '--manifest-path', uapi_manifest[0].full_path(),
-  ],
-  install: true,
-  env: {'CARGO_TARGET_DIR':meson.current_build_dir()},
-  install_dir: get_option('datadir') / 'doc/sentry-uapi',
-  install_tag: 'doc',
-  build_by_default: true,
-  build_always_stale: true,
-)
-endif # with_doc
 
 if with_tests
 cargo_options = [ '--manifest-path', uapi_manifest[0].full_path() ]