def process_link_depends(self, sources):
        """Process the link_depends keyword argument.

        This is designed to handle strings, Files, and the output of Custom
        Targets. Notably it doesn't handle generator() returned objects, since
        adding them as a link depends would inherently cause them to be
        generated twice, since the output needs to be passed to the ld_args and
        link_depends.
        """
        sources = listify(sources)
        for s in sources:
            if isinstance(s, File):
                self.link_depends.append(s)
            elif isinstance(s, str):
                self.link_depends.append(
                    File.from_source_file(self.environment.source_dir, self.subdir, s))
            elif hasattr(s, 'get_outputs'):
                self.link_depends.append(s)
            else:
                raise InvalidArguments(
                    'Link_depends arguments must be strings, Files, '
                    'or a Custom Target, or lists thereof.')
Process the link_depends keyword argument.

        This is designed to handle strings, Files, and the output of Custom
        Targets. Notably it doesn't handle generator() returned objects, since
        adding them as a link depends would inherently cause them to be
        generated twice, since the output needs to be passed to the ld_args and
        link_depends.
        
mesonbuild/build.py