Increase version to 5.0.21 and update Readme

README.md

@@ -10,6 +10,16 @@ The autogenerated OSAL user's guide can be viewed at <https://github.com/nasa/cF
 
 ## Version History
 
+### Development Build: 5.0.21
+
+- Command line options in Linux are no longer ignored/dropped.
+- No impact to current unit testing which runs UT assert as a standalone app. Add a position independent code (PIC) variant of the ut_assert library, which can be dynamically loaded into other applications rather than running as a standalone OSAL application. This enables loading
+UT assert as a CFE library.
+- Unit tests pass on RTEMS.
+- Resolve inconsistency in how the stack size is treated across different OS implemntations. With this change the user-requested size is passed through to the underlying OS without an enforced minimum. An additional sanity check is added at the shared layer to ensure that the stack size is never passed as 0.
+- Update Licenses for Apache 2.0
+- See <https://github.com/nasa/osal/pull/521>
+
 ### Development Build: 5.0.20
 -  Add "non-zero" to the out variable description for OS_Create (and related) API's.
 - Increases the buffer for context info from 128 to 256 bytes and the total report buffer to 320 bytes.

src/os/inc/osapi-version.h

@@ -30,7 +30,7 @@
 
 #define OS_MAJOR_VERSION 5  /**< @brief Major version number */
 #define OS_MINOR_VERSION 0  /**< @brief Minor version number */
-#define OS_REVISION      20  /**< @brief Revision number */
+#define OS_REVISION      21  /**< @brief Revision number */
 #define OS_MISSION_REV   0  /**< @brief Mission revision */
 
 /**