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#serial 6
dnl From Jim Meyering and Paul Eggert.
AC_DEFUN([jm_HEADER_TIOCGWINSZ_IN_TERMIOS_H],
[AC_REQUIRE([AC_SYS_POSIX_TERMIOS])
AC_CACHE_CHECK([whether use of TIOCGWINSZ requires termios.h],
jm_cv_sys_tiocgwinsz_needs_termios_h,
[jm_cv_sys_tiocgwinsz_needs_termios_h=no
if test $ac_cv_sys_posix_termios = yes; then
AC_EGREP_CPP([yes],
[#include <sys/types.h>
# include <termios.h>
# ifdef TIOCGWINSZ
yes
# endif
], jm_cv_sys_tiocgwinsz_needs_termios_h=yes)
fi
])
])
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])
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