build with rscons

Rakefile

@@ -0,0 +1,34 @@
+require "bundler"
+begin
+  Bundler.setup(:default, :development)
+rescue Bundler::BundlerError => e
+  raise "Unable to Bundler.setup(): You probably need to run `bundle install`: " + e.message
+end
+require "rscons"
+
+task :default do
+  Rscons::Environment.new(echo: :short) do |env|
+    sources = []
+    dirs = [
+      "source",
+      "modules/DerelictUtil/source",
+      "modules/DerelictSDL2/source",
+      "modules/DerelictGL3/source",
+      "modules/gl3n/gl3n",
+      "modules/glamour/glamour",
+    ].each do |dir|
+      sources += Dir["#{dir}/**/*.d"]
+    end
+    env["D_IMPORT_PATH"] += [
+      "modules/DerelictUtil/source",
+      "modules/DerelictSDL2/source",
+      "modules/DerelictGL3/source",
+      "modules/gl3n",
+      "modules/glamour",
+    ]
+    env["DFLAGS"] += ["-fversion=Derelict3", "-fversion=gl3n", "-fversion=SDLImage"]
+    env.build_dir("source", "build")
+    env.build_dir("modules", "build")
+    env.Program("app", sources)
+  end
+end