#131 Handle default cases in select_cpp_rev

Author: milasudril

recipes/cxx_compiler.py

@@ -141,11 +141,14 @@ def select_cpp_rev(compiler, rev):
 			default_rev = get_cpp_revision_tag(compiler)
 			if default_rev < min_num:
 				return rev['min']
+			return ''
 	else:
 		if 'max' in rev:
 			default_rev = get_cpp_revision_tag(compiler)
 			if default_rev > max_num:
 				return rev['max']
+			return ''
+		return ''
 
 def get_compiler_alternatives(compiler, always_use_default):
 	if always_use_default:
@@ -210,4 +213,4 @@ def configure(cfg):
 			exit(configure(json.loads(sys.argv[2])))
 	except Exception as e:
 		print(e, file=sys.stderr)
-		exit(-1)
+		exit(-1)