From 161e2de06f8f9987d6a5a0eefe7f997ce89950ef Mon Sep 17 00:00:00 2001
From: SHIBATA Hiroshi <hsbt@ruby-lang.org>
Date: Wed, 12 Jul 2017 10:27:50 +0900
Subject: Added rake-compiler-dock for mingw builds

---
 .gitignore    | 1 +
 Rakefile      | 8 ++++++++
 psych.gemspec | 1 +
 3 files changed, 10 insertions(+)

diff --git a/.gitignore b/.gitignore
index 11c9ee3..3d433c1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,4 @@
 /pkg/
 /spec/reports/
 /tmp/
+/vendor
diff --git a/Rakefile b/Rakefile
index a72ca50..c5d78f2 100644
--- a/Rakefile
+++ b/Rakefile
@@ -27,7 +27,15 @@ else
   require 'rake/extensiontask'
   Rake::ExtensionTask.new("psych") do |ext|
     ext.lib_dir = File.join(*['lib', ENV['FAT_DIR']].compact)
+    ext.cross_compile = true
+    ext.cross_platform = %w[x86-mingw32 x64-mingw32]
   end
 end
 
+task 'gem:native' do
+  require 'rake_compiler_dock'
+  sh "bundle package"   # Avoid repeated downloads of gems by using gem files from the host.
+  RakeCompilerDock.sh "bundle --local && rake cross native gem"
+end
+
 task :default => [:compile, :test]
diff --git a/psych.gemspec b/psych.gemspec
index d1764b2..1875782 100644
--- a/psych.gemspec
+++ b/psych.gemspec
@@ -46,6 +46,7 @@ DESCRIPTION
   s.required_rubygems_version = Gem::Requirement.new(">= 0")
 
   s.add_development_dependency 'rake-compiler', ">= 0.4.1"
+  s.add_development_dependency 'rake-compiler-dock', ">= 0.6.1"
   s.add_development_dependency 'minitest', "~> 5.0"
 
   if RUBY_ENGINE == 'jruby'
-- 
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