Test if compiler supports get_define.

Raise an InterpreterError for a clean error message if get_define is not
supported by the compiler.

mesonbuild/interpreter.py

@@ -1234,7 +1234,10 @@ class CompilerHolder(InterpreterObject):
             raise InterpreterException('Prefix argument of get_define() must be a string.')
         extra_args = self.determine_args(kwargs)
         deps = self.determine_dependencies(kwargs)
-        value = self.compiler.get_define(element, prefix, self.environment, extra_args, deps)
+        if hasattr(self.compiler, 'get_define'):
+            value = self.compiler.get_define(element, prefix, self.environment, extra_args, deps)
+        else:
+            raise InterpreterException('get_define is not supported for compiler ' + self.compiler.language)
         mlog.log('Fetching value of define "%s": %s' % (element, value))
         return value