-AC_DEFUN(jm_WINSIZE_IN_PTEM,
- [AC_CHECK_HEADER([sys/ptem.h],
- AC_DEFINE(WINSIZE_IN_PTEM, 1,
- [Define if your system defines `struct winsize' in sys/ptem.h.]))
- ]
-)
+AC_DEFUN([jm_WINSIZE_IN_PTEM],
+ [AC_REQUIRE([AC_SYS_POSIX_TERMIOS])
+ AC_CACHE_CHECK([whether use of struct winsize requires sys/ptem.h],
+ jm_cv_sys_struct_winsize_needs_sys_ptem_h,
+ [jm_cv_sys_struct_winsize_needs_sys_ptem_h=yes
+ if test $ac_cv_sys_posix_termios = yes; then
+ AC_TRY_COMPILE([#include <termios.h>]
+ [struct winsize x;],
+ [jm_cv_sys_struct_winsize_needs_sys_ptem_h=no])
+ fi
+ if test $jm_cv_sys_struct_winsize_needs_sys_ptem_h = yes; then
+ AC_TRY_COMPILE([#include <sys/ptem.h>],
+ [struct winsize x;],
+ [], [jm_cv_sys_struct_winsize_needs_sys_ptem_h=no])
+ fi])
+ if test $jm_cv_sys_struct_winsize_needs_sys_ptem_h = yes; then
+ AC_DEFINE([WINSIZE_IN_PTEM], 1,
+ [Define if sys/ptem.h is required for struct winsize.])
+ fi])