--- /dev/null
+# Patch by Aurelien Jarno <aurel32@debian.org> adding support to GNU/kfreebsd
+# GNU/hurd added by Samuel Thibault <samuel.thibault@ens-lyon.org>
+# Addresses Debian bug http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=480400
+# and CPAN RT http://rt.cpan.org/Public/Bug/Display.html?id=35782
+--- a/lib/ExtUtils/CBuilder.pm
++++ b/lib/ExtUtils/CBuilder.pm
+@@ -36,6 +36,8 @@
+ sunos Unix
+ cygwin Unix
+ os2 Unix
++ gnukfreebsd Unix
++ gnu Unix
+
+ dos Windows
+ MSWin32 Windows