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emacs/m4/d-type.m4

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# serial 12
dnl From Jim Meyering.
dnl
dnl Check whether struct dirent has a member named d_type.
dnl
# Copyright (C) 1997, 1999-2004, 2006, 2009-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_CHECK_TYPE_STRUCT_DIRENT_D_TYPE],
[AC_CACHE_CHECK([for d_type member in directory struct],
[gl_cv_struct_dirent_d_type],
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <dirent.h>
]],
[[struct dirent dp; dp.d_type = 0;]])],
[gl_cv_struct_dirent_d_type=yes],
[gl_cv_struct_dirent_d_type=no])
]
)
if test $gl_cv_struct_dirent_d_type = yes; then
AC_DEFINE([HAVE_STRUCT_DIRENT_D_TYPE], [1],
[Define if there is a member named d_type in the struct describing
directory headers.])
fi
]
)