--- configure.in	2005-01-30 10:28:00.000000000 +0000
+++ configure.in	2012-06-12 09:18:48.379836775 +0000
@@ -15,7 +15,6 @@
 dnl Checks for programs.
 AC_PROG_CC
 AC_ISC_POSIX
-AM_C_PROTOTYPES
 if test "x$U" != "x"; then
   AC_MSG_ERROR(Compiler not ANSI compliant)
 fi