[jira] [Commented] (QPID-4599) Add fvisibility option when building shared libraries

["Irina Boverman (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/QPID-4599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13586172#comment-13586172 ] 

Irina Boverman commented on QPID-4599:
--------------------------------------

The gcc 4.1 -fvisibility option is said to

    ...very substantially improve linking and load times of shared object libraries, produce more optimized code, provide near-perfect API export and prevent symbol clashes. It is strongly recommended that you use this in any shared objects you distribute.
                
> Add fvisibility option when building shared libraries
> -----------------------------------------------------
>
>                 Key: QPID-4599
>                 URL: https://issues.apache.org/jira/browse/QPID-4599
>             Project: Qpid
>          Issue Type: Improvement
>          Components: Proton
>         Environment: GNU Compiler 
>            Reporter: Irina Boverman
>            Assignee: Rafael H. Schloming
>            Priority: Minor
>
> http://gcc.gnu.org/wiki/Visibility
> Add an option to "hide" symbols in shared libraries except when they are declared public. 
> Extends efforts already in place for Windows builds.
> Excludes an effort to determine what symbols should be considered "public" interfaces.

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