Provide a Ruby extension.

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "upb"]
+	path = upb
+	url = https://github.com/haberman/upb

Makefile.am

@@ -238,7 +238,18 @@ python_EXTRA_DIST=                                                           \
   python/stubout.py                                                          \
   python/README.txt
 
-all_EXTRA_DIST=$(java_EXTRA_DIST) $(python_EXTRA_DIST)
+ruby_EXTRA_DIST=                                                             \
+  ruby/ext/defs.c                                                            \
+  ruby/ext/encode_decode.c                                                   \
+  ruby/ext/extconf.rb                                                        \
+  ruby/ext/message.c                                                         \
+  ruby/ext/protobuf.c                                                        \
+  ruby/ext/protobuf.h                                                        \
+  ruby/ext/repeated_field.c                                                  \
+  ruby/ext/storage.c                                                         \
+  ruby/ext/test.rb
+
+all_EXTRA_DIST=$(java_EXTRA_DIST) $(python_EXTRA_DIST) $(ruby_EXTRA_DIST)
 
 EXTRA_DIST = $(@DIST_LANG@_EXTRA_DIST)                                       \
   autogen.sh                                                                 \

autogen.sh

@@ -37,5 +37,9 @@ sed -i -e 's/RuntimeLibrary="5"/RuntimeLibrary="3"/g;
 # TODO(kenton):  Remove the ",no-obsolete" part and fix the resulting warnings.
 autoreconf -f -i -Wall,no-obsolete
 
+# pull down git submodules.
+git submodule init
+git submodule update
+
 rm -rf autom4te.cache config.h.in~
 exit 0

configure.ac

@@ -23,7 +23,7 @@ AC_CONFIG_MACRO_DIR([m4])
 AC_ARG_VAR(DIST_LANG, [language to include in the distribution package (i.e., make dist)])
 case "$DIST_LANG" in
   "") DIST_LANG=cpp ;;
-  all | cpp | java | python | javanano) ;;
+  all | cpp | java | python | javanano | ruby) ;;
   *) AC_MSG_FAILURE([unknown language: $DIST_LANG]) ;;
 esac
 AC_SUBST(DIST_LANG)

ruby/README.md

@@ -0,0 +1,34 @@
+This directory contains the Ruby extension that implements Protocol Buffers
+functionality in Ruby.
+
+The Ruby extension makes use of generated Ruby code that defines message and
+enum types in a Ruby DSL. You may write definitions in this DSL directly, but
+we recommend using protoc's Ruby generation support with .proto files. The
+build process in this directory only installs the extension; you need to
+install protoc as well to have Ruby code generation functionality.
+
+Installation
+------------
+
+To build this Ruby extension, you will need:
+
+* Rake
+* Bundler
+* Ruby development headers
+* a C compiler
+* the upb submodule
+
+First, ensure that upb/ is checked out:
+
+    $ cd ..   # top level protobuf directory
+    $ git submodule init
+    $ git submodule update
+
+Then install the required Ruby gems:
+
+    $ sudo gem install bundler rake rake-compiler rspec rubygems-tasks
+
+Then build the Gem:
+
+    $ rake gem
+    $ gem install pkg/protobuf-$VERSION.gem

ruby/Rakefile

@@ -0,0 +1,37 @@
+require "rake/extensiontask"
+require "rake/testtask"
+
+spec = Gem::Specification.new do |s|
+  s.name        = "protobuf"
+  s.version     = "2.6.2"
+  s.licenses    = ["BSD"]
+  s.summary     = "Protocol Buffers"
+  s.description = "Protocol Buffers are Google's data interchange format."
+  s.authors     = ["Protobuf Authors"]
+  s.email       = "[email protected]"
+
+  s.files       = ["lib/protobuf_c.so", "lib/protobuf.rb"]
+end
+
+Rake::ExtensionTask.new("protobuf_c", spec) do |ext|
+  ext.lib_dir = "lib"
+  ext.config_script = "extconf.rb"
+end
+
+Rake::TestTask.new(:test => :build) do |t|
+  t.test_files = FileList["tests/*.rb"]
+end
+
+task :chmod do
+  File.chmod(0755, "lib/protobuf_c.so")
+end
+
+Gem::PackageTask.new(spec) do |pkg|
+end
+task :package => :chmod
+task :gem => :chmod
+
+task :build => [:clean, :compile]
+task :default => [:build]
+
+# vim:sw=2:et