Use a custom ruby software definition

While we are waiting for a decision on
https://github.com/opscode/omnibus-software/pull/124 ,
we can vendor the ruby software definition to get more reliable
Ruby source downloads in the meantime.

config/software/ruby.rb

+#
+# Copyright:: Copyright (c) 2012 Opscode, Inc.
+# License:: Apache License, Version 2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+name "ruby"
+version "1.9.3-p484"
+
+dependency "zlib"
+dependency "ncurses"
+dependency "libedit"
+dependency "openssl"
+dependency "libyaml"
+dependency "libiconv"
+dependency "gdbm" if (platform == "mac_os_x" or platform == "freebsd" or platform == "aix")
+dependency "libgcc" if (platform == "solaris2" and Omnibus.config.solaris_compiler == "gcc")
+
+source :url => "http://cache.ruby-lang.org/pub/ruby/1.9/ruby-#{version}.tar.gz",
+       :md5 => '8ac0dee72fe12d75c8b2d0ef5d0c2968'
+
+relative_path "ruby-#{version}"
+
+env =
+  case platform
+  when "mac_os_x"
+    {
+      "CFLAGS" => "-arch x86_64 -m64 -L#{install_dir}/embedded/lib -I#{install_dir}/embedded/include -I#{install_dir}/embedded/include/ncurses -O3 -g -pipe",
+      "LDFLAGS" => "-arch x86_64 -R#{install_dir}/embedded/lib -L#{install_dir}/embedded/lib -I#{install_dir}/embedded/include -I#{install_dir}/embedded/include/ncurses"
+    }
+  when "solaris2"
+    if Omnibus.config.solaris_compiler == "studio"
+    {
+      "CFLAGS" => "-L#{install_dir}/embedded/lib -I#{install_dir}/embedded/include",
+      "LDFLAGS" => "-R#{install_dir}/embedded/lib -L#{install_dir}/embedded/lib -I#{install_dir}/embedded/include"
+    }
+    elsif Omnibus.config.solaris_compiler == "gcc"
+    {
+      "CFLAGS" => "-L#{install_dir}/embedded/lib -I#{install_dir}/embedded/include -O3 -g -pipe",
+      "LDFLAGS" => "-R#{install_dir}/embedded/lib -L#{install_dir}/embedded/lib -I#{install_dir}/embedded/include -static-libgcc",
+      "LD_OPTIONS" => "-R#{install_dir}/embedded/lib"
+    }
+    else
+      raise "Sorry, #{Omnibus.config.solaris_compiler} is not a valid compiler selection."
+    end
+  when "aix"
+    {
+      # see http://www.ibm.com/developerworks/aix/library/au-gnu.html
+      #
+      # specifically:
+      #
+      # "To use AIX run-time linking, you should create the shared object
+      # using gcc -shared -Wl,-G and create executables using the library
+      # by adding the -Wl,-brtl option to the link line. Technically, you
+      # can leave off the -shared option, but it does no harm and reduces
+      # confusion."
+      #
+      # AIX also uses -Wl,-blibpath instead of -R or LD_RUN_PATH, but the
+      # option is not additive, so requires /usr/lib and /lib as well (there
+      # is a -bsvr4 option to allow ld to take an -R flag in addition
+      # to turning on -brtl, but it had other side effects I couldn't fix).
+      #
+      # If libraries linked with gcc -shared have symbol resolution failures
+      # then it may be useful to add -bexpfull to export all symbols.
+      #
+      # -O2 optimized away some configure test which caused ext libs to fail
+      #
+      # We also need prezl's M4 instead of picking up /usr/bin/m4 which
+      # barfs on ruby.
+      #
+      "CC" => "xlc -q64",
+      "CXX" => "xlC -q64",
+      "LD" => "ld -b64",
+      "CFLAGS" => "-q64 -O -qhot -I#{install_dir}/embedded/include",
+      "CXXFLAGS" => "-q64 -O -qhot -I#{install_dir}/embedded/include",
+      "LDFLAGS" => "-q64  -L#{install_dir}/embedded/lib -Wl,-brtl -Wl,-blibpath:#{install_dir}/embedded/lib:/usr/lib:/lib",
+      "OBJECT_MODE" => "64",
+      "ARFLAGS" => "-X64 cru",
+      "M4" => "/opt/freeware/bin/m4",
+      "warnflags" => "-qinfo=por"
+    }
+  else
+    {
+      "CFLAGS" => "-I#{install_dir}/embedded/include -O3 -g -pipe",
+      "LDFLAGS" => "-Wl,-rpath,#{install_dir}/embedded/lib -L#{install_dir}/embedded/lib"
+    }
+  end
+
+build do
+  configure_command = ["./configure",
+                       "--prefix=#{install_dir}/embedded",
+                       "--with-out-ext=fiddle",
+                       "--enable-shared",
+                       "--enable-libedit",
+                       "--with-ext=psych",
+                       "--disable-install-doc"]
+
+  case platform
+  when "aix"
+    patch :source => "ruby-aix-configure.patch", :plevel => 1
+    patch :source => "ruby_aix_1_9_3_448_ssl_EAGAIN.patch", :plevel => 1
+    # --with-opt-dir causes ruby to send bogus commands to the AIX linker
+  when "freebsd"
+    configure_command << "--without-execinfo"
+    configure_command << "--with-opt-dir=#{install_dir}/embedded"
+  when "smartos"
+    # Opscode patch - someara@opscode.com
+    # GCC 4.7.0 chokes on mismatched function types between OpenSSL 1.0.1c and Ruby 1.9.3-p286
+    patch :source => "ruby-openssl-1.0.1c.patch", :plevel => 1
+
+    # Patches taken from RVM.
+    # http://bugs.ruby-lang.org/issues/5384
+    # https://www.illumos.org/issues/1587
+    # https://github.com/wayneeseguin/rvm/issues/719
+    patch :source => "rvm-cflags.patch", :plevel => 1
+
+    # From RVM forum
+    # https://github.com/wayneeseguin/rvm/commit/86766534fcc26f4582f23842a4d3789707ce6b96
+    configure_command << "ac_cv_func_dl_iterate_phdr=no"
+    configure_command << "--with-opt-dir=#{install_dir}/embedded"
+  else
+    configure_command << "--with-opt-dir=#{install_dir}/embedded"
+  end
+
+  # @todo expose bundle_bust() in the DSL
+  env.merge!({
+    "RUBYOPT"         => nil,
+    "BUNDLE_BIN_PATH" => nil,
+    "BUNDLE_GEMFILE"  => nil,
+    "GEM_PATH"        => nil,
+    "GEM_HOME"        => nil
+  })
+
+  # @todo: move into omnibus-ruby
+  has_gmake = system("gmake --version")
+
+  if has_gmake
+    env.merge!({'MAKE' => 'gmake'})
+    make_binary = 'gmake'
+  else
+    make_binary = 'make'
+  end
+
+  command configure_command.join(" "), :env => env
+  command "#{make_binary} -j #{max_build_jobs}", :env => env
+  command "#{make_binary} -j #{max_build_jobs} install", :env => env
+end