ext/extconf.rb in google_hash-0.0.0 vs ext/extconf.rb in google_hash-0.1.1

@@ -1,15 +1,33 @@
 require 'mkmf'
+require 'erb'
 require 'rubygems'
 require 'sane'
 
 # build google's lib locally...
+
 dir = Dir.pwd
 Dir.chdir 'sparsehash-1.5.2' do
   dir = dir + '/local_installed'
   command = "sh configure --prefix=#{dir} && make && make install"
   puts command
-  system command
+  # only if necessary
+  system command unless File.directory?(dir)
 end
 
 $CFLAGS += " -I./local_installed/include "
+
+if RUBY_VERSION < '1.9'
+ # appears to link using gcc on 1.8 [mingw at least]
+ $LDFLAGS += " -lstdc++ "
+end
+
+# create our files...
+# currently we're int only...hmm...
+# ltodo 64 bit compat...
+
+for type, setup_code in {'sparse' => nil, 'dense' => 'set_empty_key(1<<31);' } do
+  template = ERB.new(File.read('template/go.cpp'))
+  File.write(type.to_s + '.cpp', template.result(binding))
+end
+
 create_makefile('google_hash')