extconf.rb in charguess-1.3

- old
+ new

@@ -4,10 +4,10 @@
 require 'rake'
 
 libcharguess = File.expand_path(File.dirname(__FILE__), "../libcharguess/cpp")
 
 Dir.chdir(libcharguess) do
-  sh("./configure")
+  sh("env CXXFLAGS=\"$CXXFLAGS -fPIC\" ./configure")
   sh("make")
 end
 
 dir_config('charguess', libcharguess, libcharguess)
 