--- /dev/null
+--- enscript-1.6.6/configure.ac.orig 2012-09-30 21:24:45.567496718 +0200
++++ enscript-1.6.6/configure.ac 2012-09-30 21:41:38.907475597 +0200
+@@ -11,7 +11,7 @@
+ AC_PROG_CC
+
+ AC_USE_SYSTEM_EXTENSIONS
+-AM_C_PROTOTYPES
++CPPFLAGS="$CPPFLAGS -DPROTOTYPES"
+
+ AC_C_CONST
+ AC_FUNC_ALLOCA