Add build instructions to the README file

README.md

@@ -4,3 +4,22 @@ Libuv build automation
 This repo hosts libuv build automation for ASP.NET Core.
 
 This project is part of ASP.NET Core. You can find samples, documentation and getting started instructions for ASP.NET Core at the [Home](https://github.com/aspnet/home) repo.
+
+How the libuv package is built
+---------
+
+Packages for different operating systems and architectures are built from this repo, which pulls libuv code as a submodule, and pushed to the [aspnetcore-ci-dev MyGet feed](https://dotnet.myget.org/gallery/aspnetcore-ci-dev) as OS specific `Microsoft.AspNetCore.Internal.libuv-*` packages.
+
+The [libuv-package](https://github.com/libuv-package) repo is responsible for pulling the build packages and creating the consolidated [libuv](https://www.nuget.org/packages/Libuv/) package that contains bits for all supported architectures.
+
+Build instructions
+----------
+
+You can build the `Microsoft.AspNetCore.Internal.libuv-*` package running `build.cmd` or `build.sh` on your machine. The build script will fetch most of the dependencies required to build.
+
+For Linux, the OS being used for building is Ubuntu 14.04. You'll also need these dependencies:
+- The dependencies of .NET Core (such as `libunwind`); see https://www.microsoft.com/net/download/core for more information
+- A recent version of Mono; see http://www.mono-project.com/download/ for more information. The version of Mono that ships with Ubuntu 14.04 is too old to support the build process
+- The `gcc-arm-linux-gnueabihf`, `gcc-arm-linux-gnueabi` and `gcc-aarch64-linux-gnu` packages
+
+If you need to add support for new architectures or distributions, have a look at the `makefile.shade` file. The `libuv.so` shared library is being build there.