Index: dc3dd-7.3.1/lib/posixtm.c
===================================================================
--- dc3dd-7.3.1.orig/lib/posixtm.c
+++ dc3dd-7.3.1/lib/posixtm.c
@@ -41,7 +41,7 @@
    of `digit' even when the host does not conform to POSIX.  */
 #define ISDIGIT(c) ((unsigned int) (c) - '0' <= 9)
 
-time_t mktime ();
+time_t mktime (struct tm *tm);
 
 /*
   POSIX requires:
Index: dc3dd-7.3.1/m4/jm-macros.m4
===================================================================
--- dc3dd-7.3.1.orig/m4/jm-macros.m4
+++ dc3dd-7.3.1/m4/jm-macros.m4
@@ -38,7 +38,7 @@ AC_DEFUN([coreutils_MACROS],
   # By default, argmatch should fail calling usage (1).
   AC_DEFINE(ARGMATCH_DIE, [usage (1)],
 	    [Define to the function xargmatch calls on failures.])
-  AC_DEFINE(ARGMATCH_DIE_DECL, [void usage ()],
+  AC_DEFINE(ARGMATCH_DIE_DECL, [void usage (int)],
 	    [Define to the declaration of the xargmatch failure function.])
 
   # used by ls
@@ -131,7 +131,7 @@ AC_DEFUN([gl_CHECK_ALL_TYPES],
   dnl This test must precede tests of compiler characteristics like
   dnl that for the inline keyword, since it may change the degree to
   dnl which the compiler supports such features.
-  AC_REQUIRE([AM_C_PROTOTYPES])
+  dnl AC_REQUIRE([AM_C_PROTOTYPES])
 
   dnl Checks for typedefs, structures, and compiler characteristics.
   AC_REQUIRE([AC_C_BIGENDIAN])