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-rw-r--r--gdb/xm-sun4os4.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/gdb/xm-sun4os4.h b/gdb/xm-sun4os4.h
index 75f1037..6deb334 100644
--- a/gdb/xm-sun4os4.h
+++ b/gdb/xm-sun4os4.h
@@ -26,3 +26,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
the area occupied by the shared libraries. Sun knows about this bug
but has no obvious fix for it. */
#define BROKEN_LARGE_ALLOCA
+
+/* SunOS 4.x has memory mapped files. */
+
+#define HAVE_MMAP