title: iostream: No such file or directory in Android NDK Environment
body: <p>I compiled the *.cpp file on Android NDK Environment.
  But, I was saw this messgage.</p>
  
  <pre><code>dohyeon@ubuntu:/opt/android-ndk-r9d/jni$ ../ndk-build
  [armeabi] Compile++ thumb: CPPTETRIS &lt;= main.cpp
  /opt/android-ndk-r9d/jni/main.cpp:3:20: fatal error: iostream: No such file or directory
  compilation terminated.
  make: *** [/opt/android-ndk-r9d/obj/local/armeabi/objs/CPPTETRIS/main.o] Error 1
  dohyeon@ubuntu:/opt/android-ndk-r9d/jni$
  </code></pre>
  
  <p>My c++ files name are main.cpp and plane.cpp.</p>
  
  <p>My Andorid.mk file </p>
  
  <pre><code>LOCAL_PATH := $(call my-dir)
  
  include $(CLEAR_VARS)
  
  LOCAL_LDLIBS := -llog
  
  APP_STL := gnustl_static
  APP_STL := stlport_static
  
  include $(CLEAR_VARS)
  
  LOCAL_MODULE := CPPTETRIS
  LOCAL_SRC_FILES := main.cpp plane.cpp
  
  LOCAL_C_INCLUDES := $(LOCAL_PATH)/include-all
  
  include $(BUILD_EXECUTABLE)
  </code></pre>
  
  <p>I wonder why do this.
  Please help me.</p>