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[netCDF #XWL-678268]: Update for the Sun/Solaris Studio compiler support


> This isn't really a support request, just a bit of additional
> information that I wanted to send to you.

Thanks!  I've included your report in our "other builds" page at


Maybe it will be of help to future netCDF users.

> I am using NetCDF 4.1.2 compiled with the Solaris Studio 12 update 2
> compilers (the new name for Sun Studio) on Linux (CentOS release 5.5),
> which is one of your "other builds". Another user reported a working
> setup previously, with the combination NetCDF 4.1 / SS 12.1. The
> resulting code mostly works but fails the make check because of some
> NaN issues ("NetCDF: Numeric conversion not representable").
> This user sets "-fast" in his FLAGS, which is a macro that includes
> "-fsimple=2", the aggressive floating point optimization flag. The SS
> 12.2 documentation states (amongst other things) that:
> * -fsimple=0 is the only one preserving strict IEEE 754 conformance
> * -fsimple=1 assumes that "computations with Infinity or NaNs (?Not
> a Number?) as operands need not propagate NaNs to their results"
> "-fsimple=1" doesn't work (checked), so the solution here is to
> specify "-fsimple=0" after "-fast" (which should work but I didn't
> test it!), or to set things up like this:
> CPPFLAGS="-DsunFortran"
> CC=suncc CFLAGS="-O3 -xtarget=native -fsimple=0"
> CXX=sunCC CXXFLAGS="-O3 -xtarget=native -fsimple=0"
> F77=sunf77 FFLAGS="-O3 -xtarget=native -fsimple=0 -dalign"
> FC=sunf90 FCFLAGS="-O3 -xtarget=native -fsimple=0 -dalign"
> Note that adding "-D__FUNCTION__=__func__" to the CPPFLAGS isn't
> necessary anymore.
> I also needed the attached patch to "configure" as for some reason
> autoconf is broken on the development machine here, so impossible to
> do autoreconf.
> The configuration line I used was:
> ./configure --prefix=${PREFIXDIR} \
> --enable-static \
> --enable-shared \
> --enable-large-file-tests \
> --with-hdf5=${PREFIXDIR} \
> --with-szlib=${PREFIXDIR} \
> --with-libcf \
> --enable-netcdf4 \
> --enable-cxx-4
> With all that, all tests pass and further use of the library didn't
> show any error. Note that enabling netdcf4 without enabling cxx-4 will
> result in a build error.
> Thanks!
> Regards,
> JF Le FillÃtre
> --
> Departamento de IngenierÃa MatemÃtica
> Facultad de Ciencias FÃsicas y MatemÃticas
> Universidad de Chile

Russ Rew                                         UCAR Unidata Program
address@hidden                      http://www.unidata.ucar.edu

Ticket Details
Ticket ID: XWL-678268
Department: Support netCDF
Priority: Normal
Status: Closed

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