commit 3cf066708e29e8cef76102c82cb51e74dfdd0426
author root <root@DESKTOP-12Q6GPI.localdomain> Sat Jan 05 10:03:19 2019 +0800
committer James E. King III <jking@apache.org> Mon Jan 07 08:11:37 2019 -0500
tree 25cb18652a1e0c7a68f7d0f970fda17a5165c2cc
parent 93e8ec2d6a372cd6f68b7c11508ff7f8ea043f08

force c++11 in cmake

build/cmake/DefinePlatformSpecifc.cmake

diff --git a/build/cmake/DefinePlatformSpecifc.cmake b/build/cmake/DefinePlatformSpecifc.cmake
index a809c07..e324f59 100644
--- a/build/cmake/DefinePlatformSpecifc.cmake
+++ b/build/cmake/DefinePlatformSpecifc.cmake
@@ -97,21 +97,14 @@
 endif()
 
 # C++ Language Level
-set(CXX_LANGUAGE_LEVEL "C++${CMAKE_CXX_STANDARD}")
-if (CMAKE_CXX_STANDARD_REQUIRED)
-  string(CONCAT CXX_LANGUAGE_LEVEL "${CXX_LANGUAGE_LEVEL} [compiler must support it]")
-else()
-  string(CONCAT CXX_LANGUAGE_LEVEL "${CXX_LANGUAGE_LEVEL} [fallback to earlier if compiler does not support it]")
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+if ((CMAKE_CXX_COMPILER_ID MATCHES "GNU" OR CMAKE_CXX_COMPILER_ID MATCHES "Clang") AND NOT MINGW)
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-variadic-macros -Wno-long-long")
 endif()
-if (CMAKE_CXX_EXTENSIONS)
-  string(CONCAT CXX_LANGUAGE_LEVEL "${CXX_LANGUAGE_LEVEL} [with compiler-specific extensions]")
-else()
-  if ((CMAKE_CXX_COMPILER_ID MATCHES "GNU" OR CMAKE_CXX_COMPILER_ID MATCHES "Clang") AND NOT MINGW)
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-variadic-macros -Wno-long-long")
-  endif()
-  if ((CMAKE_CXX_COMPILER_ID MATCHES "Clang") AND NOT MINGW)
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-c++11-long-long")
-  endif()
+if ((CMAKE_CXX_COMPILER_ID MATCHES "Clang") AND NOT MINGW)
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-c++11-long-long")
 endif()
 
 if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")