Android NDK hello-world program.

README.md

android-ndk-hello

Android NDK hello-world program.

Requirements

• Android NDK
• CMake
• android-cmake

Build

cd ..
git clone https://github.com/taka-no-me/android-cmake.git

cd android_ndk_hello
./build.sh

Run

adb push build/bin/hello /data/local/tmp/
adb shell
cd /data/local/tmp
./hello

License

This program is released into the public domain.

build.sh

#!/bin/bash

BUILD_DIR="build"

mkdir -p "$BUILD_DIR"
cd "$BUILD_DIR"

cmake -DCMAKE_TOOLCHAIN_FILE="../android-cmake/android.toolchain.cmake" \
      -DANDROID_NDK="/home/vagrant/local/android-ndk-r10e"              \
      -DANDROID_ABI="arm64-v8a"                                         \
      -DANDROID_NATIVE_API_LEVEL="android-21"                           \
      -DCMAKE_BUILD_TYPE="Release"                                      \
      ..

cmake --build .

CMakeLists.txt

CMAKE_MINIMUM_REQUIRED(VERSION 2.8.2)
PROJECT(hello)

SET(PROJECT_ROOT_PATH "${CMAKE_SOURCE_DIR}")
SET(EXECUTABLE_OUTPUT_PATH "${PROJECT_BINARY_DIR}/bin")
SET(LIBRARY_OUTPUT_PATH "${PROJECT_BINARY_DIR}/lib")

ADD_EXECUTABLE(hello hello.cpp)

hello.cpp

#include <stdio.h>

int main() {
  printf("Hello, world!\n");

  FILE *fp = fopen("hello.txt", "a");
  fprintf(fp, "Hello, world!.\n");
  fclose(fp);

  return 0;
}