Clang: Fix language defaults for 2.1

a40e6ba8 · Chuck Atkins · 9b112a84 · a40e6ba8
Commit a40e6ba8 authored May 29, 2017 by Chuck Atkins
--- a/Modules/Compiler/Clang-CXX.cmake
+++ b/Modules/Compiler/Clang-CXX.cmake
@@ -36,4 +36,4 @@ if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.5)
  set(CMAKE_CXX17_EXTENSION_COMPILE_OPTION "-std=gnu++1z")
 endif()

-__compiler_check_default_language_standard(CXX 3.1 98)
+__compiler_check_default_language_standard(CXX 2.1 98)