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Date: Thu, 8 Feb 2007 11:07:05 -0800 (PST)
From: "Andrew Black (JIRA)" <jira@apache.org>
To: stdcxx-dev@incubator.apache.org
Subject: [jira] Created: (STDCXX-336) Desire capacity to have multiple
 config.h files in an install directory
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Desire capacity to have multiple config.h files in an install directory
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                 Key: STDCXX-336
                 URL: https://issues.apache.org/jira/browse/STDCXX-336
             Project: C++ Standard Library
          Issue Type: Improvement
          Components: Configuration
            Reporter: Andrew Black
            Priority: Minor
             Fix For: 4.2


A useful enhancement could be the ability to install multiple versions of the standard library into the same location.  While there is nothing in the makefiles that would prevent such an installation, a problem arises with the config.h file in the include sub directory of the install directory.  Only one config.h file can reside in this location at a time, and different versions (such as those generated when characterizations are run with different compilers) may differ.

One problem that needs to be considered in implementing (or deciding not to implement) this request is the situation where a config.h file hasn't been generated for a particular os/compiler/buildtype/buildtag.
Another problem to consider is when you have the same os/buildtype/buildtag, but different compilers, and one or both compilers support features that the other doesn't.

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