m4/jm-winsz1.m4

   1 #serial 6
   2 dnl From Jim Meyering and Paul Eggert.
   3 AC_DEFUN([jm_HEADER_TIOCGWINSZ_IN_TERMIOS_H],
   4 [AC_REQUIRE([AC_SYS_POSIX_TERMIOS])
   5  AC_CACHE_CHECK([whether use of TIOCGWINSZ requires termios.h],
   6                 jm_cv_sys_tiocgwinsz_needs_termios_h,
   7   [jm_cv_sys_tiocgwinsz_needs_termios_h=no
   8
   9    if test $ac_cv_sys_posix_termios = yes; then
  10      AC_EGREP_CPP([yes],
  11      [#include <sys/types.h>
  12 #      include <termios.h>
  13 #      ifdef TIOCGWINSZ
  14          yes
  15 #      endif
  16      ], jm_cv_sys_tiocgwinsz_needs_termios_h=yes)
  17    fi
  18   ])
  19 ])
  20
  21 AC_DEFUN([jm_WINSIZE_IN_PTEM],
  22   [AC_REQUIRE([AC_SYS_POSIX_TERMIOS])
  23    AC_CACHE_CHECK([whether use of struct winsize requires sys/ptem.h],
  24      jm_cv_sys_struct_winsize_needs_sys_ptem_h,
  25      [jm_cv_sys_struct_winsize_needs_sys_ptem_h=yes
  26       if test $ac_cv_sys_posix_termios = yes; then
  27         AC_TRY_COMPILE([#include <termios.h>]
  28           [struct winsize x;],
  29           [jm_cv_sys_struct_winsize_needs_sys_ptem_h=no])
  30       fi
  31       if test $jm_cv_sys_struct_winsize_needs_sys_ptem_h = yes; then
  32         AC_TRY_COMPILE([#include <sys/ptem.h>],
  33           [struct winsize x;],
  34           [], [jm_cv_sys_struct_winsize_needs_sys_ptem_h=no])
  35       fi])
  36    if test $jm_cv_sys_struct_winsize_needs_sys_ptem_h = yes; then
  37      AC_DEFINE([WINSIZE_IN_PTEM], 1,
  38        [Define if sys/ptem.h is required for struct winsize.])
  39    fi])