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-rw-r--r--cpukit/rtems/include/rtems/rtems/region.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/cpukit/rtems/include/rtems/rtems/region.h b/cpukit/rtems/include/rtems/rtems/region.h
index aff2648265..74d66ea334 100644
--- a/cpukit/rtems/include/rtems/rtems/region.h
+++ b/cpukit/rtems/include/rtems/rtems/region.h
@@ -14,7 +14,7 @@
* - return a segment to a region
*/
-/* COPYRIGHT (c) 1989-2007.
+/* COPYRIGHT (c) 1989-2008.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
@@ -46,6 +46,12 @@
*/
/**@{*/
+/**
+ * This constant is defined to extern most of the time when using
+ * this header file. However by defining it to nothing, the data
+ * declared in this header file can be instantiated. This is done
+ * in a single per manager file.
+ */
#ifndef RTEMS_REGION_EXTERN
#define RTEMS_REGION_EXTERN extern
#endif