--- coreutils-8.29/lib/binary-io.h~
+++ coreutils-8.29/lib/binary-io.h
@@ -33,6 +33,10 @@
 # define BINARY_IO_INLINE _GL_INLINE
 #endif
 
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
+
 #if O_BINARY
 # if defined __EMX__ || defined __DJGPP__ || defined __CYGWIN__
 #  include <io.h> /* declares setmode() */