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https://issues.apache.org/jira/browse/STDCXX-408?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12549772
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Farid Zaripov commented on STDCXX-408:
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The gcc implements dllexport/dllimport attributes only on Windows and Symbian
target platforms (i.e. Cygwin)..
> make use of __declspec(dll{export,import}) on all platforms
> -----------------------------------------------------------
>
> Key: STDCXX-408
> URL: https://issues.apache.org/jira/browse/STDCXX-408
> Project: C++ Standard Library
> Issue Type: Improvement
> Components: Build
> Affects Versions: 4.1.3
> Environment: HP aCC 3.37 and beyond, gcc/Linux
> Reporter: Martin Sebor
> Fix For: 4.2.1
>
>
> Starting with HP aCC 3.37 the compiler supports the __declspec(dllexport) and
> __declspec(dllimport) decorators on declarations of symbols with external
> linkage. According to the Release Notes for the compiler, "Support of these
> keywords enhances the performance of shared libraries and relieves the usage
> of HP_DEFINED_EXTERNAL pragmas and +Oextern= list to hide the non-exported
> symbols." See http://docs.hp.com/en/2212/A-03-37relnotes.html.
> We should enable this in our builds.
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