ndk-build error: 'string' in namespace 'std' does not name a type

I have a problem with ndk-build (ndk-r9c) Error: ``` Common/LCXPlayerSocket.h:206:2: error: 'string' in namespace 'std' does not name a type ``` Info: My Application.mk ``` APP_MODULES := MyLib APP_OPTIM := $(COMPTYPE) APP_ABI := $(TYPE_ARMEABI) APP_PLATFORM := $(PLATFORM) APP_STL := $(STL_VERSION) ``` My config.bat ``` set TYPE_ARMEABI=armeabi-v7a set PLATFORM=android-8 set STL_VERSION=stlport_static //does not working on <gnustl_static> ``` Src file: ``` include <string.h> class abc { protected: std::string m_buffer; //line 206 } ``` The bug was resold: thx @Violet Giraffe @ndtran: remove set STL_VERSION from your .bat. Add this to Application.mk: APP_STL := gnustl_static – Violet Giraffe 6 mins ago Thx for your help. [D]