From ce2b2389c6e0c7c6eb8e5fc5d0ec7803e2e1ad54 Mon Sep 17 00:00:00 2001
From: SHIBATA Hiroshi <hsbt@ruby-lang.org>
Date: Wed, 12 Jul 2017 13:22:44 +0900
Subject: [PATCH 1/3] Added cross compilation task for mingw platform

---
 Rakefile           | 16 +++++++++++++++-
 bigdecimal.gemspec |  1 +
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/Rakefile b/Rakefile
index 4c625065..ad837967 100644
--- a/Rakefile
+++ b/Rakefile
@@ -3,7 +3,21 @@ require "rake"
 require "rake/extensiontask"
 require "rake/testtask"
 
-Rake::ExtensionTask.new('bigdecimal')
+spec = eval(File.read('bigdecimal.gemspec'))
+Rake::ExtensionTask.new('bigdecimal', spec) do |ext|
+  ext.lib_dir = File.join(*['lib', ENV['FAT_DIR']].compact)
+  ext.cross_compile = true
+  ext.cross_platform = %w[x86-mingw32 x64-mingw32]
+  ext.cross_compiling do |s|
+    s.files.concat ["lib/2.2/bigdecimal.so", "lib/2.3/bigdecimal.so", "lib/2.4/bigdecimal.so"]
+  end
+end
+
+desc "Compile binaries for mingw platform using rake-compiler-dock"
+task 'build:mingw' do
+  require 'rake_compiler_dock'
+  RakeCompilerDock.sh "bundle && rake cross native gem RUBY_CC_VERSION=2.2.2:2.3.0:2.4.0"
+end
 
 Rake::TestTask.new do |t|
   t.libs << 'test/lib'
diff --git a/bigdecimal.gemspec b/bigdecimal.gemspec
index 4efe438f..113f22b3 100644
--- a/bigdecimal.gemspec
+++ b/bigdecimal.gemspec
@@ -32,6 +32,7 @@ Gem::Specification.new do |s|
 
   s.add_development_dependency "rake", "~> 10.0"
   s.add_development_dependency "rake-compiler", "~> 0.9"
+  s.add_development_dependency "rake-compiler-dock", ">= 0.6.1"
   s.add_development_dependency "minitest", "~> 4.7.5"
   s.add_development_dependency "pry"
 end

From e071e3a7596043ee87ea7a32b994c52a28949d56 Mon Sep 17 00:00:00 2001
From: SHIBATA Hiroshi <hsbt@ruby-lang.org>
Date: Wed, 12 Jul 2017 13:48:26 +0900
Subject: [PATCH 2/3] To use `Bundler::GemHelper.install_tasks instead of
 bundler/gem_tasks

---
 Rakefile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Rakefile b/Rakefile
index ad837967..09b00898 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,4 +1,6 @@
-require "bundler/gem_tasks"
+require "bundler"
+Bundler::GemHelper.install_tasks
+
 require "rake"
 require "rake/extensiontask"
 require "rake/testtask"

From bf7eee63bf953869591d425bea84153dfad6f789 Mon Sep 17 00:00:00 2001
From: SHIBATA Hiroshi <hsbt@ruby-lang.org>
Date: Wed, 12 Jul 2017 13:50:28 +0900
Subject: [PATCH 3/3] Added helper file for mingw binaries

---
 lib/bigdecimal.rb | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 lib/bigdecimal.rb

diff --git a/lib/bigdecimal.rb b/lib/bigdecimal.rb
new file mode 100644
index 00000000..c9682deb
--- /dev/null
+++ b/lib/bigdecimal.rb
@@ -0,0 +1,5 @@
+begin
+  require "#{RUBY_VERSION[/\d+\.\d+/]}/bigdecimal.so"
+rescue LoadError
+  require 'bigdecimal.so'
+end