How to cross compile mono for x86 android

Question

I have tried many different ways. I completed a compile with the NDK and when I run it on an emulator with the adp shell, I get no output.

mono-3.10.0 from a tarball

Here are my environment variables:

export CC=i686-linux-android-gcc
export SYSROOT=/home/XXUSERNAMEXX/Develop/android-ndk-r10d/platform/android-17/arch-x86
export PATH=/tmp/my-android-toolchain/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

Here is my configure:

 ./configure --disable-mcs-build --host=i686-linux-android --prefix=/home/XXUSERNAMEXX/vmshare/workspace/HelloJni/jni/mono-2.0 --target=i686-linux-android --build=i686-linux-gnu

then just make then make install

Then build a C# sample of just: // HelloAndroid.cs // Outputs HelloAndroid.exe using System;

namespace HelloAndroid
{
    class MainClass
    {
        public static void Main (string[] args)
        {
            Console.WriteLine ("Hello World!");
        }
    }
}

then I copy mono-sgen libmonosgen-2.0.so HelloAndroid.exe to an android directory of

/data/data/com.example.helloandroid

change all the permissions to 755 change all the ownerships to system:system

then type

./mono-sgen HelloAndroid.exe

in the adp shell

then I just get nothing. no errors, no output, just the command line returns

Answer 1

You need to compile the .NET Assemblies (System.dll ...) like for regular host and to put them into Android.

In addition define MONO_PATH to mono runtimes.