--- configure.in.org	Fri Sep  1 14:35:10 2000
+++ configure.in	Fri Sep  1 14:21:53 2000
@@ -75,6 +75,7 @@
 dnl ##### Checks for header files.
 AC_PATH_XTRA
 AC_HEADER_DIRENT
+AC_CHECK_HEADERS(unistd.h)
 
 dnl ##### Switch over to C++.  This will make the checks below a little
 dnl ##### bit stricter (requiring function prototypes in include files).
@@ -173,11 +174,27 @@
 dnl # include file (e.g., in cygwin 1.1.2).
 AC_CACHE_CHECK([for mkstemp],
 xpdf_cv_func_mkstemp,
-[AC_TRY_COMPILE([#include <stdlib.h>],
+[AC_TRY_COMPILE([#include <stdlib.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+],
 [mkstemp("foo");],
 xpdf_cv_func_mkstemp=yes, xpdf_cv_func_mkstemp=no)])
 if test "$xpdf_cv_func_mkstemp" = yes; then
   AC_DEFINE(HAVE_MKSTEMP)
+fi
+dnl # Ditto mkstemps()
+AC_CACHE_CHECK([for mkstemps],
+xpdf_cv_func_mkstemps,
+[AC_TRY_COMPILE([#include <stdlib.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif],
+[mkstemps("foo", 0);],
+xpdf_cv_func_mkstemps=yes, xpdf_cv_func_mkstemps=no)])
+if test "$xpdf_cv_func_mkstemps" = yes; then
+  AC_DEFINE(HAVE_MKSTEMPS)
 fi
 
 dnl ##### Check select argument type: on HP-UX before version 10, select