android/ndk-hello_world/README.md

How to compile C++ hello world with Android NDK

1. Create following directory structure:

   hello_world/
     jni/
     libs/
   

2. In the jni directory create two files

   1. Android.mk:

      LOCAL_PATH := $(call my-dir)
      include $(CLEAR_VARS) 
      
      # give module name
      LOCAL_MODULE    := hello_world  
      
      # list your C files to compile
      LOCAL_SRC_FILES := test.c
      
      

   This seems to be needed for Android M on ARMv8

   LOCAL_CFLAGS = -fPIE LOCAL_LDFLAGS = -fPIE -pie

    include $(BUILD_EXECUTABLE)
    ```
   

   2. test.c

      #include <stdio.h>
      #include <stdlib.h>
      int main()
      {
           printf("Hello World\n");
           return 0;
      }
      

3. Export PATH to NDK

   export PATH=/usr/local/softs/android-ndk-r10e:$PATH
   

4. Go to jni directory

5. Call ndk-build

6. Result should be in hello_world/libs/armeabi/hello_world