+AC_DEFUN([jm_PREREQ_STAT],
+[
+ AC_CHECK_HEADERS(sys/sysmacros.h sys/statvfs.h sys/vfs.h inttypes.h)
+ AC_CHECK_HEADERS(sys/param.h sys/mount.h)
+ AC_CHECK_FUNCS(statvfs)
+ jm_AC_TYPE_LONG_LONG
+
+ statxfs_includes="\
+$ac_includes_default
+#if HAVE_SYS_STATVFS_H
+# include <sys/statvfs.h>
+#endif
+#if HAVE_SYS_VFS_H
+# include <sys/vfs.h>
+#endif
+#if ( ! HAVE_SYS_STATVFS_H && ! HAVE_SYS_VFS_H && HAVE_SYS_MOUNT_H && HAVE_SYS_PARAM_H )
+/* NetBSD 1.5.2 needs these, for the declaration of struct statfs. */
+# include <sys/param.h>
+# include <sys/mount.h>
+#endif
+"
+ AC_CHECK_MEMBERS([struct statfs.f_basetype],,,[$statxfs_includes])
+ AC_CHECK_MEMBERS([struct statvfs.f_basetype],,,[$statxfs_includes])
+ AC_CHECK_MEMBERS([struct statfs.f_fstypename],,,[$statxfs_includes])
+ AC_CHECK_MEMBERS([struct statfs.f_type],,,[$statxfs_includes])
+ AC_CHECK_MEMBERS([struct statvfs.f_type],,,[$statxfs_includes])
+ AC_CHECK_MEMBERS([struct statfs.f_fsid.__val],,,[$statxfs_includes])
+ AC_CHECK_MEMBERS([struct statvfs.f_fsid.__val],,,[$statxfs_includes])
+ AC_CHECK_MEMBERS([struct statfs.f_namemax],,,[$statxfs_includes])
+ AC_CHECK_MEMBERS([struct statvfs.f_namemax],,,[$statxfs_includes])
+ AC_CHECK_MEMBERS([struct statfs.f_namelen],,,[$statxfs_includes])
+ AC_CHECK_MEMBERS([struct statvfs.f_namelen],,,[$statxfs_includes])
+])
+
+AC_DEFUN([jm_PREREQ_STRNLEN],
+[
+ AC_FUNC_STRNLEN
+ AC_HEADER_STDC
+ AC_CHECK_HEADERS(memory.h)
+ AC_CHECK_DECLS([memchr])
+
+ # This is necessary because automake-1.6.1 doesn't understand
+ # that the above use of AC_FUNC_STRNLEN means we may have to use
+ # lib/strnlen.c.
+ test $ac_cv_func_strnlen_working = yes \
+ && AC_LIBOBJ(strnlen)
+])
+