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<== Date ==> <== Thread ==>
Subject: Re: XSPRESS3 hdf5 problems
From: Ralph Lange via Tech-talk <tech-talk at aps.anl.gov>
To: EPICS Tech Talk <tech-talk at aps.anl.gov>
Date: Mon, 27 Jan 2020 22:48:15 +0100
Background:
Between RHEL6 and RHEL7, the indirect linking policy changed.
Before, applications could rely on symbols from indirectly linked libraries to be available. E.g., an EPICS IOC could just use pthread calls without explicitly linking against it, knowing that EPICS Base libraries had been linked against pthread and would make the shared library available at run time.
Now, each application must explicitly link against all libraries it uses. (Careful with libraries that use C++ templates in their APIs. They inject source code into your application, so that it may e.g. call pthread without you knowing it. Under the new policy, the pthread library needs to be added in such a case.)


Cheers,
~Ralph


On Mon, 27 Jan 2020 at 19:50, Mark Rivers via Tech-talk <tech-talk at aps.anl.gov> wrote:

Hi John,

 

I found and fixed the problem.  The pthread and rt libraries needed to be added to PROD_SYS_LIBS.  They appear to be added automatically by the EPICS build system for static builds, but not for dynamic builds.

 

The master branch should now work correctly for dynamic builds.

 

Mark


Replies:
RE: XSPRESS3 hdf5 problems Mark Rivers via Tech-talk
References:
XSPRESS3 hdf5 problems John Dobbins via Tech-talk
RE: XSPRESS3 hdf5 problems Mark Rivers via Tech-talk
Re: XSPRESS3 hdf5 problems John Dobbins via Tech-talk
Re: XSPRESS3 hdf5 problems Matt Newville via Tech-talk
Re: XSPRESS3 hdf5 problems John Dobbins via Tech-talk
RE: XSPRESS3 hdf5 problems Mark Rivers via Tech-talk
Re: XSPRESS3 hdf5 problems John Dobbins via Tech-talk
RE: XSPRESS3 hdf5 problems Mark Rivers via Tech-talk
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