[ET Trac] [Einstein Toolkit] #1738: Update requirements documentation for Cactus

[Einstein Toolkit]

#1738: Update requirements documentation for Cactus
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  Reporter:  hinder       |       Owner:                     
      Type:  enhancement  |      Status:  confirmed          
  Priority:  minor        |   Milestone:                     
 Component:  Cactus       |     Version:  development version
Resolution:               |    Keywords:  documentation      
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Comment (by rhaas):

 * Cactus requires C99 (since ET_2012_11
 http://einsteintoolkit.org/about/releases/ET_2012_11_announcement.php)
 * Cactus requires a C++ compiler (since it's main() is in a C++ file)
 * Cactus (flesh and Cactus* arrangements other than tests, examples and
 the Fortran thorn) do not require any Fortran compiler
 * Einstein Toolkit requires Fortran 2003 (since LoopControl does #1546)
 * Carpet requires a Fortran 90 compiler
 * Carpet requires a C++98 compiler and STL and can use a C++11 compiler

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1738#comment:3>
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