Add support for opaque build targets. Closes #10627.biggen

1 files changed, 19 insertions, 0 deletions

diff --git a/mesonbuild/interpreter/interpreter.py b/mesonbuild/interpreter/interpreter.py
index 1f9a99a..523b3e7 100644
--- a/mesonbuild/interpreter/interpreter.py
+++ b/mesonbuild/interpreter/interpreter.py
@@ -408,6 +408,7 @@ class Interpreter(InterpreterBase, HoldableObject):
                            'join_paths': self.func_join_paths,
                            'library': self.func_library,
                            'message': self.func_message,
+                           'opaque_target': self.func_opaque_target,
                            'option': self.func_option,
                            'project': self.func_project,
                            'range': self.func_range,
@@ -1984,6 +1985,24 @@ class Interpreter(InterpreterBase, HoldableObject):
         self.add_target(tg.name, tg)
         return tg
 
+    def func_opaque_target(self, node: mparser.FunctionNode, args: T.Tuple[str],
+                           kwargs: 'kwtypes.OpaqueTarget') -> build.CustomTarget:
+        if len(args) != 1:
+            raise InterpreterException('Opaque_target takes exactly one positional argument.')
+        opaque_data = mesonlib.get_opaque_data(self.subproject, args[0])
+        kwargs['output'] = opaque_data.stamp
+        kwargs['depfile'] = opaque_data.dep
+        integration_args = ['--stamp=@OUTPUT@', 
+                            '--dep=@DEPFILE@',
+                            '--scratch=' + opaque_data.scratch,
+                            '--out=' + opaque_data.out,
+                            '--']
+        kwargs['command'] = listify(kwargs['command']) + integration_args + kwargs['args']
+        del kwargs['args']
+        ct = self.func_custom_target(node, args, kwargs)
+        ct.is_opaque = True
+        return ct
+
     @typed_pos_args('run_target', str)
     @typed_kwargs(
         'run_target',