(build:windows) include pre-compiled binary

README.md

@@ -110,11 +110,11 @@ or
 
 ### Prerequisites
 
-* The installation also requires [python 2.x](http://www.python.org/getit/) to be installed and available on the PATH
+* The installation on BSD/Linux requires [python 2.x](http://www.python.org/getit/) to be installed and available on the PATH
 * setting the environmental variable `USE_GLOBAL_LIBUV` will prevent compiling the packaged version.
   * if you have a compatible `libuv.(so | dylib | dll)` on the PATH already
 
-Windows users will additionally require:
+On Windows the GEM ships with a pre-compiled binary. If you would like to build yourself:
 
 - A copy of Visual Studio 2017. [Visual Studio Build Tools](https://www.visualstudio.com/downloads/#build-tools-for-visual-studio-2017) works fine.
   - Windows 10 SDK
@@ -126,6 +126,7 @@ Windows users will additionally require:
 - If using jRuby then [GCC](http://win-builds.org/stable/) is also required
   - Setup the paths as described on the gcc page
   - Add required environmental variable `set LIBRARY_PATH=X:\win-builds-64\lib;X:\win-builds-64\x86_64-w64-mingw32\lib`
+- `rake compile`
 
 
 

ext/Rakefile

@@ -1,18 +1,28 @@
+
+require 'fileutils'
+
 if ENV.has_key?('USE_GLOBAL_LIBUV')
-	exit(0)
+    exit(0)
 else
-	require 'rubygems'
-	require 'ffi'
-	require 'rake/clean'
-	require '../lib/libuv/ext/tasks'
+    require 'rubygems'
+    require 'ffi'
+    require 'rake/clean'
+    require '../lib/libuv/ext/tasks'
 
-	Dir.chdir File.expand_path("../", __FILE__)
-	Dir.chdir '..'
+    Dir.chdir File.expand_path("../", __FILE__)
+    Dir.chdir '..'
 
-	task :default => :libuv
+    task :default => :libuv
 
-	desc "Compile libuv from submodule"
-	task :libuv => ["ext/libuv/lib/libuv.#{FFI::Platform::LIBSUFFIX}"]
+    if FFI::Platform.windows?
+        task :libuv do
+            FileUtils.mkdir('ext/libuv/lib')
+            FileUtils.cp 'ext/libuv.dll', 'ext/libuv/lib/libuv.dll'
+        end
+    else
+        desc "Compile libuv from submodule"
+        task :libuv => ["ext/libuv/lib/libuv.#{FFI::Platform::LIBSUFFIX}"]
 
-	CLOBBER.include("ext/libuv/lib/libuv.#{FFI::Platform::LIBSUFFIX}")
+        CLOBBER.include("ext/libuv/lib/libuv.#{FFI::Platform::LIBSUFFIX}")
+    end
 end

libuv.gemspec

@@ -28,6 +28,10 @@ Gem::Specification.new do |gem|
     gem.files         = `git ls-files`.split("\n")
     gem.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
 
+    if File.exist? 'ext/libuv.dll'
+        gem.files << 'ext/libuv.dll'
+    end 
+
     # Add the submodule to the gem
     relative_path = File.expand_path("../", __FILE__) + '/'
     `git submodule --quiet foreach pwd`.split($\).each do |submodule_path|