- Fix some Linux libc5 problems reported by Miles Wilson <mw@mctitle.com>
diff --git a/configure.in b/configure.in
index 9fe1a92..05a354d 100644
--- a/configure.in
+++ b/configure.in
@@ -55,7 +55,7 @@
AC_CHECK_LIB(pam, pam_authenticate, , )
dnl Checks for header files.
-AC_CHECK_HEADERS(pty.h endian.h paths.h lastlog.h shadow.h netgroup.h maillock.h)
+AC_CHECK_HEADERS(pty.h endian.h paths.h lastlog.h shadow.h netgroup.h maillock.h sys/select.h)
dnl Checks for library functions.
AC_CHECK_FUNCS(openpty strlcpy mkdtemp arc4random setproctitle setlogin)