1 files changed, 16 insertions, 0 deletions
diff --git a/jni/ruby/lib/rubygems/ext/cmake_builder.rb b/jni/ruby/lib/rubygems/ext/cmake_builder.rb
new file mode 100644
index 0000000..24531bc
--- /dev/null
+++ b/jni/ruby/lib/rubygems/ext/cmake_builder.rb
@@ -0,0 +1,16 @@
+require 'rubygems/command'
+
+class Gem::Ext::CmakeBuilder < Gem::Ext::Builder
+  def self.build(extension, directory, dest_path, results, args=[], lib_dir=nil)
+    unless File.exist?('Makefile') then
+      cmd = "cmake . -DCMAKE_INSTALL_PREFIX=#{dest_path}"
+      cmd << " #{Gem::Command.build_args.join ' '}" unless Gem::Command.build_args.empty?
+
+      run cmd, results
+    end
+
+    make dest_path, results
+
+    results
+  end
+end