NetBSD/gnu/dist/tar/m4/d-ino.m4

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#serial 4
dnl From Jim Meyering.
dnl
dnl Check whether struct dirent has a member named d_ino.
dnl
AC_DEFUN([jm_CHECK_TYPE_STRUCT_DIRENT_D_INO],
[AC_REQUIRE([AC_HEADER_DIRENT])dnl
AC_CACHE_CHECK([for d_ino member in directory struct],
jm_cv_struct_dirent_d_ino,
[AC_TRY_LINK(dnl
[
#include <sys/types.h>
#ifdef HAVE_DIRENT_H
# include <dirent.h>
#else /* not HAVE_DIRENT_H */
# define dirent direct
# ifdef HAVE_SYS_NDIR_H
# include <sys/ndir.h>
# endif /* HAVE_SYS_NDIR_H */
# ifdef HAVE_SYS_DIR_H
# include <sys/dir.h>
# endif /* HAVE_SYS_DIR_H */
# ifdef HAVE_NDIR_H
# include <ndir.h>
# endif /* HAVE_NDIR_H */
#endif /* HAVE_DIRENT_H */
],
[struct dirent dp; dp.d_ino = 0;],
jm_cv_struct_dirent_d_ino=yes,
jm_cv_struct_dirent_d_ino=no)
]
)
if test $jm_cv_struct_dirent_d_ino = yes; then
AC_DEFINE(D_INO_IN_DIRENT, 1,
[Define if there is a member named d_ino in the struct describing
directory headers.])
fi
]
)