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-rw-r--r--bits/environments.h28
1 files changed, 26 insertions, 2 deletions
diff --git a/bits/environments.h b/bits/environments.h
index 8ed19906b4..f3af20655a 100644
--- a/bits/environments.h
+++ b/bits/environments.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1999 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -20,6 +20,8 @@
 # error "Never include this file directly.  Use <unistd.h> instead"
 #endif
 
+#include <bits/wordsize.h>
+
 /* This header should define the following symbols under the described
    situations.  A value `1' means that the model is always supported,
    `-1' means it is never supported.  Undefined means it cannot be
@@ -32,4 +34,26 @@
    _XBS5_LPBIG_OFFBIG	64bit long and pointers and large off_t type
 */
 
-#endif /* environments.h */
+#if __WORDSIZE == 64
+
+/* We can never provide environments with 32-bit wide pointers.  */
+# define _XBS5_ILP32_OFF32	-1
+# define _XBS5_ILP32_OFFBIG	-1
+
+/* By default we have 64-bit wide `long int', pointers and `off_t'.  */
+# define _XBS5_LP64_OFF32	1
+# define _XBS5_LPBIG_OFFBIG	1
+
+#else /* __WORDSIZE == 32 */
+
+/* By default we have 32-bit wide `int', `long int', pointers and `off_t'.  */
+# define _XBS5_ILP32_OFF32	1
+
+/* We optionally provide an environment with the above size but an 64-bit
+   side `off_t'.  Therefore we don't define _XBS5_ILP32_OFFBIG.  */
+
+/* We can never provide environments with 64-bit wide pointers.  */
+# define _XBS5_LP64_OFF64	-1
+# define _XBS5_LPBIG_OFFBIG	-1
+
+#endif /* __WORDSIZE == 32 */