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How to Download and Install Android NDK r23 for Linux (x86_64)

If you are diving into native Android development, specifically using C or C++, the Android NDK (Native Development Kit) is an essential tool. While the latest versions are always recommended for new projects, many legacy codebases and specific build environments rely on the stability of the r23 branch.

In this guide, we will cover the direct download link for Android NDK r23 for Linux (x86_64) and provide a step-by-step installation tutorial.

The Anatomy of the Filename: androidndkr23blinuxx8664zip

Let’s break down the keyword to ensure you understand exactly what you are downloading: download androidndkr23blinuxx8664zip top

• androidndk – The Android Native Development Kit.
• r23b – Revision 23, minor revision 'b'. This fixes a critical bug in r23a regarding std::atomic on ARMv8.
• linux – The host operating system (not Android, but your build machine).
• x86_64 – The CPU architecture (64-bit Intel/AMD). Most modern Linux servers use this.
• zip – The compressed archive format (as opposed to .exe for Windows or .dmg for macOS).

Important note: There is no version called "r23b" that is a .tar.gz or .exe for Linux. The official distribution from Google is a .zip file. If you see a .tar.gz, you are likely on a third-party mirror.

1. What is this file?

• File: android-ndk-r23-linux-x86_64.zip
• Platform: Linux (Ubuntu, Debian, Fedora, etc.)
• Architecture: 64-bit (x86_64)
• Purpose: Allows developers to write parts of Android apps in C or C++ (native code) using tools like CMake and clang.

Troubleshooting Common Download Issues

| Problem | Solution | |---------|----------| | wget: unable to resolve host | Check internet / DNS. | | 404 Not Found | Ensure you’re using r23b not r23c or r24. URL is exact. | | Permission denied (unzip) | Use sudo or extract to your home folder. | | Checksum mismatch | Redownload; file may be corrupted. | How to Download and Install Android NDK r23

Using with Android Studio

If you are using this NDK with Android Studio but want to force the project to use this specific version instead of the one managed by the IDE:

1. Open your project's local.properties file.
2. Add the following line:

   ndk.dir=/home/yourusername/android-ndk-r23
   

   (Replace yourusername with your actual Linux username).

Alternatively, in newer versions of Android Studio, it is preferred to set the version in your build.gradle file: androidndk – The Android Native Development Kit

android 
    ndkVersion "23.0.000000" // Check the exact version string in the extracted folder

Installation Guide

Once the download is complete, follow these steps to set up the NDK on your Linux machine.

6.2 Integrating with Gradle

In app/build.gradle:

android 
    ndkVersion "23.1.7779620"  // r23b's build number
    externalNativeBuild 
        cmake 
            path "src/main/cpp/CMakeLists.txt"