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dnl From Jim Meyering.
# serial 1
AC_DEFUN(AM_HEADER_TIOCGWINSZ_NEEDS_SYS_IOCTL,
[AC_REQUIRE([AM_SYS_POSIX_TERMIOS])
AC_CACHE_CHECK([whether use of TIOCGWINSZ requires sys/ioctl.h],
am_cv_sys_tiocgwinsz_needs_sys_ioctl_h,
[am_cv_sys_tiocgwinsz_needs_sys_ioctl_h=no
gwinsz_in_termios_h=no
if test $am_cv_sys_posix_termios = yes; then
AC_EGREP_CPP([yes],
[#include <sys/types.h>
# include <termios.h>
# ifdef TIOCGWINSZ
yes
# endif
], gwinsz_in_termios_h=yes)
fi
if test $gwinsz_in_termios_h = no; then
AC_EGREP_CPP([yes],
[#include <sys/types.h>
# include <sys/ioctl.h>
# ifdef TIOCGWINSZ
yes
# endif
], am_cv_sys_tiocgwinsz_needs_sys_ioctl_h=yes)
fi
])
if test $am_cv_sys_tiocgwinsz_needs_sys_ioctl_h = yes; then
AC_DEFINE(GWINSZ_IN_SYS_IOCTL)
fi
])
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