Doc building for android

========================== Steps for Android Target addtion =======================

1. setup android ndk standalone tool chain with platform=14 option

   Android NDK can be downloaded from http://developer.android.com/tools/sdk/ndk/index.html

   example command to setup standalone tool chain:

   ~/work/toolchains/android-ndk-r8c/build/tools$ ./make-standalone-toolchain.sh --platform=android-14 --install-dir=/home/ubuntu/work/toolchains/ndk_standalone --ndk-dir=/home/ubuntu/work/toolchains/android-ndk-r8c
   

2. Download rustc from git repository

   a. git clone http://github.com/webconv/rust.git

   b. cd rust

   c. mkdir build

   d. cd build

3. Create Makefile using CMake

   cmake ../ -DTargetOsType=android -DTargetCpuType=arm -DToolchain=path_of_standalone_toolchain_dir

4. Build libuv and llvm

   make libuv

   make llvm

5. Create Makefile again (the Makefile made in step 3 does not contain information of llvm)

   cmake ../

6. Build Rustc ( make and make install have been separated)

   a.make

   b.make install [ it will copy ARM libraries into /usr/local/lib/rustc/arm-unknown-android/lib

7. How to cross compiler

   rustc --target arm-unknown-android hello.rs

8. How to run on Android

   use adb -e push command to push all arm libs as specified in 6 b

   push your binary

   set LD_LIBRARY_PATH

   run using adb shell