[Rd] problem building R-patched on x86-64 with PGI 6.1

[Jennifer Lai]

Prof Brian Ripley wrote:

>
>> As those of you who saw my post on R-help know, I've been trying to 
>> build
>> R-patched on a dual Opteron box running Scyld Beowulf, using the PGI 6.1
>> compilers.  The build went fine, but I couldn't get it to pass make
>> check-all.  Jennifer Lai, who reported success with PGI 6.0 previously,
>> seems to have the same problem with 6.1.  Here are the particulars:
>>
>> Since R requires IEEE754 conformance, the flag to use for PGI is -Kieee.
>> (BTW, configure still insist on sticking in -mieee-fp, which generates a
>> warning.)  With that flag, the build runs into trouble with the first
>> example in ?optim.  Running it by hand gives me:
>
>
> Well, configure insists on doing so because we were told it was correct.
> (Will change.)  Is -Kieee always correct for PG?
> Looking at
>
> http://www.amd.com/us-en/assets/content_type/DownloadableAssets/dwamd_PGI_nov603.pdf 
>
>
> suggests you might want to try -pc64 -Kieee.
>
Thanks, Prof. Ripley! The optim example pass the sanity check with -pc64 
-Kieee flag.
"make check" now fails at reg-tests-1.R


Regards,
Jennifer