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<== Date ==> <== Thread ==>

Subject: "Size of symbol changed" warnings building EPICS Base 3.14.12.2
From: "J. Lewis Muir" <jlmuir@imca-cat.org>
To: EPICS Tech Talk <tech-talk@aps.anl.gov>
Date: Fri, 02 Mar 2012 10:51:25 -0600
When building EPICS Base 3.14.12.2 (+ Known Problems patches)
for vxWorks-ppc603, vxWorks-ppc604, and vxWorks-ppc604_long, I'm
getting warnings like this:

===
/opt/vxworks-tornado-2.0.2/host/x86-linux/bin/ldppc -r -o
callbackTest  -L../../../../lib/vxWorks-ppc603/
-L/opt/vxworks-tornado-2.0.2/host/x86-linux/powerpc-wrs-vxworks/lib
          callbackTest.o    -ldbIoc -ldbStaticIoc -lca -lCom
Warning: size of symbol
`_$_Q2t14epicsSingleton1Z13localHostName9reference' changed from
160 to 164 in cac.o
Warning: size of symbol
`__rf__Q2t14epicsSingleton1Z13localHostName9reference' changed
from 128 to 132 in cac.o
===

When building for vxWorks-ppc604_long, there are more of these
warnings than for the other vxWorks targets.  Some warnings do
not appear to be related to callbackTest.c (which is test code).

Attached is a complete build log showing all warnings.
Searching for the string "Warning: size of symbol" will find the
relevant warnings.

The build host is running RHEL Client 5.7.  The VxWorks Tornado
2.0.2 environment is from the APS.

Searching the web I found this:

  http://gcc.gnu.org/ml/gcc-help/2001-03/msg00167.html

I don't know if that helps.

Are these warnings a problem?

Thanks,

Lewis

Attachment: epics-3.14.12.2-build.txt.gz
Description: GNU Zip compressed data


Replies:
Re: "Size of symbol changed" warnings building EPICS Base 3.14.12.2 J. Lewis Muir
Re: "Size of symbol changed" warnings building EPICS Base 3.14.12.2 Andrew Johnson

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