interpreter: use typed_kwargs for build_target.name_suffix

mesonbuild/build.py

@@ -1191,7 +1191,7 @@ class BuildTarget(Target):
                     raise InvalidArguments('name_prefix must be a string.')
                 self.prefix = name_prefix
                 self.name_prefix_set = True
-        if 'name_suffix' in kwargs:
+        if kwargs.get('name_suffix') is not None:
             name_suffix = kwargs['name_suffix']
             if isinstance(name_suffix, list):
                 if name_suffix:

mesonbuild/interpreter/kwargs.py

@@ -336,6 +336,7 @@ class _BaseBuildTarget(TypedDict):
     link_depends: T.List[T.Union[str, File, build.CustomTarget, build.CustomTargetIndex, build.BuildTarget]]
     link_language: T.Optional[str]
     name_prefix: T.Optional[str]
+    name_suffix: T.Optional[str]
     native: MachineChoice
     override_options: T.Dict[OptionKey, T.Union[str, int, bool, T.List[str]]]
     depend_files: NotRequired[T.List[File]]

mesonbuild/interpreter/type_checking.py

@@ -567,6 +567,12 @@ def _name_validator(arg: T.Optional[T.Union[str, T.List]]) -> T.Optional[str]:
     return None
 
 
+def _name_suffix_validator(arg: T.Optional[T.Union[str, T.List]]) -> T.Optional[str]:
+    if arg == '':
+        return 'must nt be a empty string. An empty array may be passed if you want Meson to use the default behavior.'
+    return _name_validator(arg)
+
+
 _NAME_PREFIX_KW: KwargInfo[T.Optional[T.Union[str, T.List]]] = KwargInfo(
     'name_prefix',
     (str, NoneType, list),
@@ -581,6 +587,7 @@ _BUILD_TARGET_KWS: T.List[KwargInfo] = [
     BT_SOURCES_KW,
     INCLUDE_DIRECTORIES.evolve(name='d_import_dirs'),
     _NAME_PREFIX_KW,
+    _NAME_PREFIX_KW.evolve(name='name_suffix', validator=_name_suffix_validator),
     RUST_CRATE_TYPE_KW,
     KwargInfo('d_debug', ContainerTypeInfo(list, (str, int)), default=[], listify=True),
     D_MODULE_VERSIONS_KW,