--- libf2c/libI77/configure.in.orig	Sat Nov 27 02:52:28 1999
+++ libf2c/libI77/configure.in	Sat Nov 27 02:52:46 1999
@@ -129,7 +129,7 @@ else
   AC_MSG_RESULT(no)
 fi
 
-AC_CHECK_FUNCS(tempnam)
+AC_CHECK_FUNCS(tempnam mkstemp getenv)
 
 # posix will guarantee the right behaviour for sprintf, else we can't be
 # sure; HEADER_STDC wouldn't be the right check in sunos4, for instance.
