m4/jm-winsz2.m4

   1 #serial 5
   2
   3 AC_DEFUN([gl_HEADER_TIOCGWINSZ_NEEDS_SYS_IOCTL],
   4 [AC_REQUIRE([gl_HEADER_TIOCGWINSZ_IN_TERMIOS_H])
   5  AC_CACHE_CHECK([whether use of TIOCGWINSZ requires sys/ioctl.h],
   6                 jm_cv_sys_tiocgwinsz_needs_sys_ioctl_h,
   7   [jm_cv_sys_tiocgwinsz_needs_sys_ioctl_h=no
   8
   9   if test $jm_cv_sys_tiocgwinsz_needs_termios_h = no; then
  10     AC_EGREP_CPP([yes],
  11     [#include <sys/types.h>
  12 #     include <sys/ioctl.h>
  13 #     ifdef TIOCGWINSZ
  14         yes
  15 #     endif
  16     ], jm_cv_sys_tiocgwinsz_needs_sys_ioctl_h=yes)
  17   fi
  18   ])
  19   if test $jm_cv_sys_tiocgwinsz_needs_sys_ioctl_h = yes; then
  20     AC_DEFINE(GWINSZ_IN_SYS_IOCTL, 1,
  21       [Define if your system defines TIOCGWINSZ in sys/ioctl.h.])
  22   fi
  23 ])