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From "Chuck Rolke (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (QPID-5100) C++ Broker windows build exports amqp library classes in qpidcommon dll
Date Tue, 03 Sep 2013 14:21:53 GMT

     [ https://issues.apache.org/jira/browse/QPID-5100?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chuck Rolke resolved QPID-5100.
-------------------------------

       Resolution: Not A Problem
    Fix Version/s: 0.22

This appeared to be a problem in the face of 80+ missing export statements in other modules.

                
> C++ Broker windows build exports amqp library classes in qpidcommon dll
> -----------------------------------------------------------------------
>
>                 Key: QPID-5100
>                 URL: https://issues.apache.org/jira/browse/QPID-5100
>             Project: Qpid
>          Issue Type: Bug
>          Components: C++ Broker
>    Affects Versions: 0.22
>         Environment: Windows build
>            Reporter: Chuck Rolke
>            Assignee: Chuck Rolke
>             Fix For: 0.22
>
>
> The symbol export mechanism for the ampq library has an issue whereby all the exported
symbols for amqp.dll are linked into qpidcommon.dll and exported from there.
> To expose all the exports use:
> {noformat}
> cd qpid/cpp
> find . -name "*.h" | xargs grep _EXTERN
> {noformat}
> The *_EXTERN then indicates for each symbol which export library the symbol originates.
The symbols in question are all the ./amqp/ symbols pegged with the QPID_COMMON_EXTERN. For
example:
> {noformat}
> ./amqp/Decoder.h:    QPID_COMMON_EXTERN Decoder(const char*, size_t);
> ./amqp/Decoder.h:    QPID_COMMON_EXTERN CharSequence readSequence8();
> ./amqp/Decoder.h:    QPID_COMMON_EXTERN CharSequence readSequence32();
> {noformat}
> The fix for this problem is to copy one of the ImportExport.h pattern files and make
it work for compiler symbol amqp_EXPORTS. Then change all the QPID_COMMON_EXPORTS in /amqp/*.h
to QPID_AMQP_EXPORTS.

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