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[netCDF #LVC-614373]: how to arrive at integer4 on a 64 bit system

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  • Subject: [netCDF #LVC-614373]: how to arrive at integer4 on a 64 bit system
  • Date: Mon, 11 Mar 2013 11:16:05 -0600
Hi Frank,

> Description of problem: We installed netcdf with g95 on a 64 bit computer
> 
> mkdir /opt/netcdf-4.1.3-g95-64
> export CC="gcc"
> export CXX="g++"
> export CPPFLAGS="-DNDEBUG -DgFortran"
> export CFLAGS="-O -m64"
> export FC="g95"
> export F77="g95"
> export FFLAGS="-O -g -fno-second-underscore"
> export FCFLAGS="-O -g -fno-second-underscore"
> ./configure --prefix=/opt/netcdf-4.1.3-g95-64
> make
> make test
> make install
> 
> Compiling the CHIMERE model we always get error messages like this:
> 
> In file endchimere.F90:21
> 
> ncstat=nf90_close(meteo_ncid)
> 1
> Error: Type mismatch in parameter 'ncid' at (1).  Passing INTEGER(4) to 
> INTEGER(8)
> 
> Changing the compiling options from -i4 to -i8 avoids this compiling
> problem but produces a segmentation fault later somewhere else.
> 
> So, my question: How can we compile NETCDF with g95 in a manner that
> netdcf expects a 4 byte integer instead of a 8 byte integer?

Try setting

   export CFLAGS="-O -m32"

and also add "-m32" to your FFLAGS and FCFLAGS.  You will get 32-bit libraries,
but they will still be able to read and write netCDF files with 64-bit offsets,
because netCDF was designed to work on 32-bit platforms as well as 64-bit 
platforms.

If that doesn't work, you might try using gfortran instead of g95.  We test with
gfortran ...

--Russ

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



Ticket Details
===================
Ticket ID: LVC-614373
Department: Support netCDF
Priority: Normal
Status: Closed