From 60b1b879030c6af777a6675e90e4ea9f34e3eb09 Mon Sep 17 00:00:00 2001
From: Meco Man <34888354+mysterywolf@users.noreply.github.com>
Date: Fri, 2 Oct 2020 11:22:17 +0800
Subject: [PATCH] =?UTF-8?q?[fixed]=20=E5=9C=A8keil=E7=8E=AF=E5=A2=83?=
 =?UTF-8?q?=E4=B8=8B=20compilers\armlibc\sys\unistd.h=20=E4=B8=8E=20libc?=
 =?UTF-8?q?=5Ffcntl.h=E7=9A=84=E5=AE=8F=E5=AE=9A=E4=B9=89=E5=8F=91?=
 =?UTF-8?q?=E7=94=9F=E4=BA=86=E9=87=8D=E5=A4=8D=E5=AE=9A=E4=B9=89=E7=9A=84?=
 =?UTF-8?q?=E5=86=B2=E7=AA=81?=
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---
 components/libc/compilers/armlibc/sys/unistd.h | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/components/libc/compilers/armlibc/sys/unistd.h b/components/libc/compilers/armlibc/sys/unistd.h
index 3199b01e0e..524de2cf83 100644
--- a/components/libc/compilers/armlibc/sys/unistd.h
+++ b/components/libc/compilers/armlibc/sys/unistd.h
@@ -36,16 +36,34 @@
 #define _FNDELAY    _FNONBLOCK  /* non blocking I/O (4.2 style) */
 #define _FNOCTTY    0x8000  /* don't assign a ctty on this open */
 
+
+#ifndef O_RDONLY
 #define O_RDONLY    0       /* +1 == FREAD */
+#endif
+#ifndef O_WRONLY
 #define O_WRONLY    1       /* +1 == FWRITE */
+#endif
+#ifndef O_RDWR
 #define O_RDWR      2       /* +1 == FREAD|FWRITE */
+#endif
+#ifndef O_APPEND
 #define O_APPEND    _FAPPEND
+#endif
+#ifndef O_CREAT
 #define O_CREAT     _FCREAT
+#endif
+#ifndef O_TRUNC
 #define O_TRUNC     _FTRUNC
+#endif
+#ifndef O_EXCL
 #define O_EXCL      _FEXCL
+#endif
+#ifndef O_SYNC
 #define O_SYNC      _FSYNC
 #endif
 
+#endif
+
 
 int     isatty      (int fd);
 char *  ttyname     (int desc);