/usr/share/aclocal-1.4/winsz.m4 is in automake1.4 1:1.4-p6-13.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 | 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,1,
[Define if TIOCGWINSZ requires sys/ioctl.h])
fi
])
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