--- extconf.rb	2008-11-19 14:45:25.000000000 +0100
+++ /Users/sebastian/Desktop/cairo-1.8.0/extconf.rb	2008-11-19 14:42:17.000000000 +0100
@@ -124,9 +124,9 @@ File.open("Makefile", "w") do |f|
       f.puts(line)
     when /^\t\$\(CC\)/
       if PKGConfig.msvc?
-        output_option = "-Fo"
+        output_option = "-Fo "
       else
-        output_option = "-o"
+        output_option = "-o "
       end
       unless /#{Regexp.escape(output_option)}/ =~ line
         line = "#{line.chomp} #{output_option}$@"