linkers: Allow optlink to be invoked indirectly

mesonbuild/environment.py

@@ -793,7 +793,7 @@ class Environment:
                 exelist=compiler, version=search_version(o), direct=invoked_directly)
         elif 'OPTLINK' in o:
             # Opltink's stdout *may* beging with a \r character.
-            return OptlinkDynamicLinker(for_machine, version=search_version(o))
+            return OptlinkDynamicLinker(compiler, for_machine, version=search_version(o))
         elif o.startswith('Microsoft') or e.startswith('Microsoft'):
             out = o or e
             match = re.search(r'.*(X86|X64|ARM|ARM64).*', out)

mesonbuild/linkers.py

@@ -968,15 +968,22 @@ class OptlinkDynamicLinker(VisualStudioLikeLinkerMixin, DynamicLinker):
 
     """Digital Mars dynamic linker for windows."""
 
-    def __init__(self, for_machine: mesonlib.MachineChoice,
+    def __init__(self, exelist: T.List[str], for_machine: mesonlib.MachineChoice,
                  *, version: str = 'unknown version'):
         # Use optlink instead of link so we don't interfer with other link.exe
         # implementations.
-        super().__init__('optlink', ['optlink.exe'], for_machine, '', [], version=version)
+        super().__init__('optlink', exelist, for_machine, '', [], version=version)
 
     def get_allow_undefined_args(self) -> T.List[str]:
         return []
 
+    def get_debugfile_args(self, targetfile: str) -> T.List[str]:
+        # Optlink does not generate pdb files.
+        return []
+
+    def get_always_args(self) -> T.List[str]:
+        return []
+
 
 class CudaLinker(PosixDynamicLinkerMixin, DynamicLinker):
     """Cuda linker (nvlink)"""