Index: lib/mkdir-p.c
===================================================================
RCS file: /cvsroot/coreutils/coreutils/lib/mkdir-p.c,v
retrieving revision 1.11
diff -u -r1.11 mkdir-p.c
--- lib/mkdir-p.c	22 Sep 2005 05:42:26 -0000	1.11
+++ lib/mkdir-p.c	12 Oct 2005 19:52:28 -0000
@@ -49,6 +49,10 @@
 # define ENOSYS EEXIST
 #endif
 
+#ifndef EROFS
+# define EROFS EEXIST
+#endif
+
 #define WX_USR (S_IWUSR | S_IXUSR)
 
 /* Ensure that the directory ARG exists.
@@ -215,14 +219,18 @@
 		  leading_dirs = new;
 		}
 	    }
-	  else if (errno == EEXIST || errno == ENOSYS)
+	  else if (errno == EEXIST || errno == ENOSYS || errno == EROFS)
 	    {
 	      /* A file is already there.  Perhaps it is a directory.
 		 If not, it will be diagnosed later.
 
 		 The ENOSYS is for Solaris 8 NFS clients, which can
 		 fail with errno == ENOSYS if mkdir is invoked on an
-		 NFS mount point.  */
+		 NFS mount point.
+
+		 The EROFS is for cygwin, which can fail with
+		 errno == EROFS if the file exists but is part of a
+		 read only file system.  */
 	    }
 	  else
 	    {