From f0a63b59214d7885dc2d4872637e269eb38d5e49 Mon Sep 17 00:00:00 2001
From: Matthew Flatt <mflatt@racket-lang.org>
Date: Sat, 4 Jan 2020 18:55:22 -0700
Subject: [PATCH] rktio: repair for building without ptherad support

---
 racket/src/rktio/rktio_file.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/racket/src/rktio/rktio_file.c b/racket/src/rktio/rktio_file.c
index 0e80b2c547..227de53a73 100644
--- a/racket/src/rktio/rktio_file.c
+++ b/racket/src/rktio/rktio_file.c
@@ -258,10 +258,12 @@ static rktio_fd_t *finish_unix_fd_creation(rktio_t *rktio, int fd, int modes, rk
             ? RKTIO_OPEN_REGFILE
             : RKTIO_OPEN_NOT_REGFILE);
 
+# ifdef RKTIO_USE_PENDING_OPEN
   if (existing_rfd) {
     rktio_update_system_fd(rktio, existing_rfd, fd, modes);
     return existing_rfd;
   } else
+# endif
     return rktio_system_fd(rktio, fd, modes);
 }
 #endif