Patch #623780: Replace obsolete struct macros.
diff --git a/configure.in b/configure.in
index 21fc77c..002666d 100644
--- a/configure.in
+++ b/configure.in
@@ -1860,8 +1860,8 @@
 AC_HEADER_TIME
 AC_STRUCT_TM
 AC_STRUCT_TIMEZONE
-AC_STRUCT_ST_RDEV
-AC_STRUCT_ST_BLKSIZE
+AC_CHECK_MEMBERS([struct stat.st_rdev])
+AC_CHECK_MEMBERS([struct stat.st_blksize])
 AC_STRUCT_ST_BLOCKS
 
 AC_MSG_CHECKING(for time.h that defines altzone)