--- /dev/null
+diff -up m4-1.4.16/lib/stdio.in.h.orig m4-1.4.16/lib/stdio.in.h
+--- m4-1.4.16/lib/stdio.in.h.orig 2012-05-30 13:55:51.092600199 +0200
++++ m4-1.4.16/lib/stdio.in.h 2012-05-30 13:56:25.763794100 +0200
+@@ -162,7 +162,9 @@ _GL_WARN_ON_USE (fflush, "fflush is not
+ so any use of gets warrants an unconditional warning. Assume it is
+ always declared, since it is required by C89. */
+ #undef gets
++#if HAVE_RAW_DECL_GETS
+ _GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
++#endif
+
+ #if @GNULIB_FOPEN@
+ # if @REPLACE_FOPEN@