diff -burN stunnel-4.06.orig/configure.ac stunnel-4.06/configure.ac

--- stunnel-4.06.orig/configure.ac	2004-12-26 18:33:15.124066152 +0100

+++ stunnel-4.06/configure.ac	2004-12-26 18:34:28.262947352 +0100

@@ -33,6 +33,7 @@

 AC_CHECK_SIZEOF(unsigned short)

 AC_CHECK_SIZEOF(unsigned int)

 AC_CHECK_SIZEOF(unsigned long)

+AC_CHECK_SIZEOF(unsigned long long)

 AC_MSG_NOTICE([**************************************** PTY device files])

 AC_CHECK_FILE("/dev/ptmx", AC_DEFINE(HAVE_DEV_PTMX))