README file for the 

Microtec PowerPC C/C++ compiler patch 3.7.3 for dSPACE RPC&HIL Release 7.0 to 7.1

December 8, 2011

Copyright (c) 2011 dSPACE GmbH, Germany
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This file contains information concerning

1. Introduction / Products revised by this Installation
2. How to install 
3. Software changes
4. Restrictions

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  1. Introduction / Products revised by this Installation
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  This version has been created to work with:
  Microtec PowerPC C/C++ compiler 3.7 for Release 7.0
  Microtec PowerPC C/C++ compiler 3.7 for Release 7.1

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  2. How to install
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  The Microtec PowerPC C/C++ compiler patch 3.7.3 updates the compiler release 3.7 as 
  provided on your dSPACE RCP&HIL installation media. It is also compatible with dSPACE 
  setups in which the previously issued compiler patch DS_MCCPPC_3_7_2p1_187415.exe
  has been installed.

  To install the Microtec PowerPC C/C++ compiler patch 3.7.3, please execute the file 
  DS_MCCPPC_3_7_3p2_209880.exe.
  
  The following binaries will be installed in your Microtec PowerPC C/C++ compiler directory:
  
  %PPC_ROOT%\bin\cbeppc.exe
  %PPC_ROOT%\bin\cxxfe.exe
  %PPC_ROOT%\bin\mccppc.exe
  
  The previous versions will be overwritten.

  NOTE: You need to close any dSPACE software and MATLAB before invoking the installation.

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  3. Software changes
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  The Microtec PowerPC C/C++ compiler patch 3.7.3 fixes the following issues of the Microtec 
  PowerPC C/C++ compiler 3.7:
  
  * The compiler's C++ frontend terminates when processing a C++ source file containing the 
     declarations of a base class and a class derived from the base class if:
     
     - the base class destructor is not declared 'virtual' and 
     - informational messages are not suppressed (parameter -Qi is not set)
     
     Upon termination, the C++ frontend shows the error message:
     '(F); "<source name>.cpp", line <y> pos <x>; diag_message: missing type substitution'
     
  * When using the 'optimize for time' setting (-Ot), an error in the compiler's loop optimization 
     may lead to an erratic behaviour of individual model variables at run-time, which can be 
     observed in ControlDesk. This error occurs only when a loop, whose complexity forces the 
     compiler to spill variables processed within the loop from registers to the stack, is optimized 
     using -Ot. The 'optimize for size' setting (-Os) is not affected by this problem.
	 
  * It corrects a problem introduced by Microtec PowerPC compiler 3.7.2 where an attempt was
     made to use a value before it was initialized (i.e., code was sequenced incorrectly).
	 The problem occurs, if optimization -Og or -Otrix (or something in between) is used.

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  4. Restrictions
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  This patch is compatible with dSPACE Release 7.0. to 7.1

  This patch does not support older versions of the dSPACE software.
  
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