1 files changed, 14 insertions, 0 deletions
diff --git a/winsup/mingw/include/unistd.h b/winsup/mingw/include/unistd.h
index f3a54495e..90934a0ed 100644
--- a/winsup/mingw/include/unistd.h
+++ b/winsup/mingw/include/unistd.h
@@ -14,10 +14,24 @@
 #include <getopt.h>
 #undef __UNISTD_GETOPT__
 
+/* These are also defined in stdio.h. */
+#ifndef	SEEK_SET
+#define SEEK_SET 0
+#endif
+
+#ifndef	SEEK_CUR
+#define SEEK_CUR 1
+#endif
+
+#ifndef SEEK_END
+#define SEEK_END 2
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+
 /* This is defined as a real library function to allow autoconf
    to verify its existence. */
 int ftruncate(int, off_t);