diff --git a/configure.in b/configure.in
index 0b8047a..9265985 100644
--- a/configure.in
+++ b/configure.in
@@ -216,10 +216,10 @@
 fi
 
 # Checks for header files.
-AC_CHECK_HEADERS(bstring.h endian.h lastlog.h limits.h login.h maillock.h netdb.h netgroup.h netinet/in_systm.h paths.h poll.h pty.h shadow.h security/pam_appl.h sys/bitypes.h sys/bsdtty.h sys/cdefs.h sys/poll.h sys/select.h sys/stat.h sys/stropts.h sys/sysmacros.h sys/time.h sys/ttcompat.h stddef.h time.h usersec.h util.h utmp.h utmpx.h)
+AC_CHECK_HEADERS(bstring.h endian.h floatingpoint.h lastlog.h limits.h login.h maillock.h netdb.h netgroup.h netinet/in_systm.h paths.h poll.h pty.h shadow.h security/pam_appl.h sys/bitypes.h sys/bsdtty.h sys/cdefs.h sys/poll.h sys/select.h sys/stat.h sys/stropts.h sys/sysmacros.h sys/time.h sys/ttcompat.h stddef.h time.h usersec.h util.h utmp.h utmpx.h)
 
 # Checks for library functions.
-AC_CHECK_FUNCS(arc4random atexit b64_ntop bcopy bindresvport_af clock freeaddrinfo gai_strerror getaddrinfo getnameinfo getrusage inet_aton innetgr md5_crypt memmove mkdtemp on_exit openpty rresvport_af setenv seteuid setlogin setproctitle setreuid sigaction sigvec snprintf strlcat strlcpy strsep vsnprintf vhangup _getpty __b64_ntop)
+AC_CHECK_FUNCS(arc4random atexit b64_ntop bcopy bindresvport_af clock freeaddrinfo gai_strerror getaddrinfo getnameinfo getrusage inet_aton innetgr md5_crypt memmove mkdtemp on_exit openpty rresvport_af setenv seteuid setlogin setproctitle setreuid sigaction sigvec snprintf strerror strlcat strlcpy strsep vsnprintf vhangup _getpty __b64_ntop)
 dnl    checks for time functions
 AC_CHECK_FUNCS(gettimeofday time)
 dnl    checks for libutil functions
@@ -724,6 +724,18 @@
 fi
 
 
+AC_CACHE_CHECK([if libc defines sys_errlist], ac_cv_libc_defines_sys_errlist, [
+	AC_TRY_LINK([], 
+		[ extern const char *const sys_errlist[]; printf("%s", sys_errlist[0]);], 
+		[ ac_cv_libc_defines_sys_errlist="yes" ],
+		[ ac_cv_libc_defines_sys_errlist="no" ]
+	)
+])
+if test "x$ac_cv_libc_defines_sys_errlist" = "xyes" ; then
+	AC_DEFINE(HAVE_SYS_ERRLIST)
+fi
+
+
 # Looking for programs, paths and files
 AC_ARG_WITH(rsh,
 	[  --with-rsh=PATH         Specify path to remote shell program ],