1.Use of undeclared identifier 'GL_BGRA_EXT'
修改openGL的头文件为:#include<OpenGLES/ES2/glext.h>
2.Undefined symbols for architecture armv7:
"_kSecReturnRef", referenced from:
l4597 in libQCAR.a(libQCAR.a-armv7-master.o)
"_kSecReturnPersistentRef", referenced from:
l4597 in libQCAR.a(libQCAR.a-armv7-master.o)
"_kSecClassKey", referenced from: