linkers: Add support for mold linker

[why]
Support for the relatively new mold linker is missing. If someone wants
to use mold as linker `LDFLAGS="-B/path/to/mold"` has to be added instead
of the usual `CC_LD=mold meson ...` or `CXX_LD=mold meson ...`.

[how]
Allow `mold' as linker for clang and newer GCC versions (that versions
that have support).

The error message can be a bit off, because it is generic for all GNU
like compilers, but I guess that is ok. (i.e. 'mold' is not listed as
possible linker, even if it would be possible for the given compiler.)

[note]
GCC Version 12.0.1 is not sufficient to say `mold` is supported. The
expected release with support will be 12.1.0.
On the other hand people that use the un-released 12.0.1 will probably
have built it from trunk. Allowing 12.0.1 is helping bleeding edge
developers to use mold in Meson already now.

Fixes: #9072

Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/mesonbuild/compilers/compilers.py b/mesonbuild/compilers/compilers.py
index 17c9f36..34f9a09 100644
--- a/mesonbuild/compilers/compilers.py
+++ b/mesonbuild/compilers/compilers.py
@@ -1,4 +1,4 @@
-# Copyright 2012-2019 The Meson development team
+# Copyright 2012-2022 The Meson development team
 
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -1007,7 +1007,7 @@ class Compiler(HoldableObject, metaclass=abc.ABCMeta):
         return dep.get_link_args()
 
     @classmethod
-    def use_linker_args(cls, linker: str) -> T.List[str]:
+    def use_linker_args(cls, linker: str, version: str) -> T.List[str]:
         """Get a list of arguments to pass to the compiler to set the linker.
         """
         return []