Unable to include iostream in android why?

Question

Have installed android-ndk-r7, and trying to compile .cpp file.

#include <iostream>

using namespace std;

int main ( int argc, char ** argv)
{

     cout <<"Hello World.."<<endl;

} 

Executed following command: Got into jni folder, and executed

#ndk-build

Got following error:

/home/jelari/Desktop/androidDevelopment/android-ndk-r7/DCF/jni/test1.cpp:1:20: error: iostream: No such file or directory
/home/jelari/Desktop/androidDevelopment/android-ndk-r7/DCF/jni/test1.cpp: In function 'int main(int, char**)':
/home/jelari/Desktop/androidDevelopment/android-ndk-r7/DCF/jni/test1.cpp:8: error: 'cout' was not declared in this scope
/home/jelari/Desktop/androidDevelopment/android-ndk-r7/DCF/jni/test1.cpp:8: error: 'endl' was not declared in this scope
make: *** [/home/jelari/Desktop/androidDevelopment/android-ndk-r7/DCF/obj/local/armeabi/objs/test1/test1.o] Error 1

What am i doing wrong ?

My Android.mk file looks like:

# A simple test for the minimal standard C++ library
#

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)
LOCAL_MODULE := test1
LOCAL_SRC_FILES := test1.cpp
include $(BUILD_EXECUTABLE)

and Application.mk file looks like:

# Build both ARMv5TE and ARMv7-A machine code.
APP_ABI := armeabi armeabi-v7a

Kindly point out the mistake?

Answer 1

Just so the answer is readily accessible here on SO, here it is:

By default, the C++ standard library is very minimal.

You need to set APP_STL in your Application.mk file.

I use:

APP_STL := gnustl_static

but you could have used system, stlport_static, stlport_shared, or gnustl_static.

It's documented under $NDK/docs/CPLUSPLUS-SUPPORT.html, and it's a little hidden, because the $NDK/documentation.html index file doesn't list it.

Quoted from http://groups.google.com/group/android-ndk/browse_thread/thread/983c436239d48704?pli=1