compilers: move split_shlib_to_parts to the base compiler

Only the GnuLikeCompiler overrides this, and it's implemented multiple
places

mesonbuild/compilers/compilers.py

@@ -1059,6 +1059,9 @@ class Compiler(metaclass=abc.ABCMeta):
         is good enough here.
         """
 
+    def split_shlib_to_parts(self, fname: str) -> T.Tuple[T.Optional[str], str]:
+        return None, fname
+
 
 def get_args_from_envvars(lang: str,
                           for_machine: MachineChoice,

mesonbuild/compilers/cs.py

@@ -61,9 +61,6 @@ class CsCompiler(BasicLinkerIsCompilerMixin, Compiler):
     def get_werror_args(self):
         return ['-warnaserror']
 
-    def split_shlib_to_parts(self, fname):
-        return None, fname
-
     def get_dependency_gen_args(self, outtarget, outfile):
         return []
 

mesonbuild/compilers/java.py

@@ -37,9 +37,6 @@ class JavaCompiler(BasicLinkerIsCompilerMixin, Compiler):
     def get_werror_args(self):
         return ['-Werror']
 
-    def split_shlib_to_parts(self, fname):
-        return None, fname
-
     def get_dependency_gen_args(self, outtarget, outfile):
         return []
 

mesonbuild/compilers/mixins/clike.py

@@ -169,9 +169,6 @@ class CLikeCompiler(Compiler):
         # Almost every compiler uses this for disabling warnings
         return ['-w']
 
-    def split_shlib_to_parts(self, fname: str) -> T.Tuple[T.Optional[str], str]:
-        return None, fname
-
     def depfile_for_object(self, objfile: str) -> str:
         return objfile + '.' + self.get_depfile_suffix()