First try.

1fbef67a · Per Cederqvist · 853793d2 · 1fbef67a
Commit 1fbef67a authored Aug 04, 1993 by Per Cederqvist
--- a/src/server/tmp-difftime.h
+++ b/src/server/tmp-difftime.h
+/* This file should be removed as soon as possible. autoconf should
+   fix this instead. */
+extern double difftime(time_t t1, time_t t2);