报错 error: use of undeclared identifier (AS)

Android studio编译程序时报错：

D:/Android/sdk/ndk-bundle/sources/cxx-stl/llvm-libc++/include\locale:3548:30: error: use of undeclared identifier 'catopen'
    catalog __cat = (catalog)catopen(__nm.c_str(), NL_CAT_LOCALE);

换了ndk就报这个错，这是编译库的问题，

加上这句

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++ -std=c++11 -fPIC -w")