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

Subject: Re: Tornado 2.2, cross-compiling woes
From: "Ernest L. Williams Jr." <ernesto@ornl.gov>
To: Andy Foster <ajf@observatorysciences.co.uk>
Cc: Epics Questions <tech-talk@aps.anl.gov>
Date: Mon, 01 Dec 2003 12:36:38 -0500
On Mon, 2003-12-01 at 11:52, Andy Foster wrote:
> Hi All,
> 
> I've just been experimenting with cross-compiling
> EPICS 3.14.4 against Tornado 2.0.2 (vxWorks 5.4.2)
> and Tornado 2.2 (vxWorks 5.5) and I wanted to share
> the following result.
> 
> (Note: This is cross-compiling with the Wind River supplied
> cross-compiler from Solaris->PPC, so this is separate from the
> Linux->PPC posting I made a few days back).
> 
> I have the following simple database, containing a single calcout record
> on a 1Hz scan:
> 
> ********************************************
> #! Generated by VisualDCT v2.4
> #! DBDSTART
> #! DBD("../dbd/simple.dbd")
> #! DBDEND
> 
> 
> record(calcout, "$(user):trigger") {
>   field(SCAN, "1 second")
>   field(CALC, "(A=2)?1:0")
>   field(OOPT, "Transition To Zero")
> }
> 
> 
> #! Further lines contain data used by VisualDCT
> #! View(3131,2961,1.3)
> #! Record("$(user):trigger",2680,2440,0,0,"$(user):trigger")
> ***********************************************
> 
> 
> This DOES NOT work for me when compiled with T2.2
> i.e. the VAL field of "$(user):trigger" stays equal to 1
> no matter what value I set A equal to.
> 
> But it does work fine when compiled against T2.0.2
> i.e. with the gcc-2.7.2 based compiler.
> 
> 
> For the case which does not work (Tornado 2.2), I have:
> .../ccppc -v
> 
> Reading specs from /usr/software/dev/packages/vxworks/tornado2.2/ppc/host/sun4-solaris2/bin/../lib/gcc-lib/powerpc-wrs-vxworks/gcc-2.96/specs
> gcc version gcc-2.96 (2.96+) 19990621 AltiVec VxWorks 5.5
> 65115 79101 83322 83686 84218 85823 85973 86999 87279 87638 \
> 88306 88708 88966 90104 90120 90296 90648 90662
> 
> (I have just patched this compiler as per Wind River's patch:
> patch-tor2_2.ppc.031031 - in the hope that this would fix the problem.
> I think those are SPR numbers which appear in the line above).
> 
Those are indeed SPR numbers.



> Any comments and I wondered how many sites are actively using
> Tornado 2.2 either with a 3.13 or a 3.14 based release and if
> you have noticed any subtle problems? All a bit worrying...
> 
We are starting to see this issues as well and are actively trying to
keep the T2.2 compiler in synch with the WRS patches.



> Cheers,
> 
> Andy
> 
> --------------------------------------------------------------------
> Observatory Sciences Limited    Email: ajf@observatorysciences.co.uk
> William James House             Tel: 44 - (0)1223 - 508259
> Cowley Road                     Fax: 44 - (0)1223 - 508258
> Cambridge, CB4 0WX, UK          http://www.observatorysciences.co.uk
> 


References:
Tornado 2.2, cross-compiling woes Andy Foster

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