External Native Build Issues Android Studio NDK Sample HelloJni (Build Failed)

Question

Error: executing external native build for cmake C:\\Users\\PC1\\Desktop\\ndkdata\\GDNdkText\\app\\CMakeLists.txt

Error While Building:

I have installed NDK, CMake, LLDP as mentioned here . Do I need to install any other tool or need to set any environment variables?

Answer 1

open Terminal and run this command:

gradlew build --stacktrace

Answer 2

If you run under Linux you need to install Ninja. sudo apt install ninja-build

Tested today.

Answer 3

你必须使用自制软件安装忍者

brew install ninja

Answer 4

您还需要安装ncurses5 （对于 arch-linux，其 AUR 包 - ncurses5-compat-libs ），因为 Android Studio 2.2 上的 NDK 支持不使用可能已安装在您的系统上的 ncurses6。

Answer 5

我通过检查日志文件解决了我的问题。

./app/.cxx/cmake/commonDebug/x86/android_gradle_generate_cmake_ninja_json_x86.stderr.txt

Answer 6

I think the problem is the wrong location of CMakelist.txt file.

Try to move CMakelist.txt file from your app root directory to app/src/main/cpp/CMakelist.txt directory and then update the location from gradle file also like this:

externalNativeBuild {
    cmake {
        path "src/main/cpp/CMakeLists.txt"
    }
}

Answer 7

如果你想让你的项目不包含任何 C++ 文件，请确保你没有选中在新项目开始时包含 C++ 的框

Answer 8

I ran into this issue when importing a co-workers workspace. We were getting external native build errors. And it seemed like the IDE was ignoring a lot of the CMake commands.

It turns out the issue was that I didn't have Ninja installed as suggest in ariel's post above. I discovered this by running gradlew build --stacktrace and found a line complaining about not having Ninja installed. Note: we are developing in a linux environment.

Ninja is a build system that focuses on speed, and is used to replace make in systems with a large number of input files. Ninja Wiki

Once I installed ninja, everything build perfectly!