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[netCDF #RWK-638692]: Building shared libraries under SuSE Linux 64bit

> Hello all!
> I am trying to build netcdf with the -enable-shared flag, as Scientific
> Python's NetCDF module appears to insist on it.

Oh, that is not good. Are you sure this is the case? It *requires* shared 
netCDF?

> I never had problems with the installation until I swapped to a SuSE
> 64bit Linux server (think it runs 9.3!).

The 64-bit is the problem.

> I am building everything fancy in a local user directory, and I'm using
> the Intel ifort compiler.
> (netcdf, ifort, python etc resides there, but for standard thinks like
> gcc i'm using the global installation)
> The problem now is, that netcdf configures fine using
> 
> ./configure --prefix=/data/gis/fhebeler/linux --disable-cxx --enable-shared
> 
> (the c++ is giving me troubles, so i disabled it and used the
> precompiled version from your website)

Our website only has static prebuilt libraries.

But probably Scientific Python only uses the C API, and you can build with 
--disable-f77 --disable-cxx to turn off all Fortran and C++ stuff.

> 
> When I try to make it, it bails out here:
> 
> /usr/lib64/gcc-lib/x86_64-suse-linux/3.3.3/../../../../x86_64-suse-linux/bin/ld:
> ../f90/.libs/libnetcdff90.a(netcdf.o): relocation R_X86_64_32 can not be
> used when making a shared object; recompile with -fPIC
> ../f90/.libs/libnetcdff90.a(netcdf.o): could not read symbols: Bad value
> collect2: ld returned 1 exit status
> make[3]: *** [libnetcdff.la] Error 1
> make[3]: Leaving directory
> `/raid/gis/fhebeler/downloads/netcdf/netcdf-3.6.2/fortran'
> make[2]: *** [all] Error 2
> make[2]: Leaving directory
> `/raid/gis/fhebeler/downloads/netcdf/netcdf-3.6.2/fortran'
> make[1]: *** [all-recursive] Error 1
> make[1]: Leaving directory
> `/raid/gis/fhebeler/downloads/netcdf/netcdf-3.6.2'
> make: *** [all] Error 2

This saying that libtool and your compiler are having a problem building shared 
fortran libraries on your system. Possibly there is a set of flags which could 
make it work, but it would be easier to just turn off the fortran libraries if 
you don't need them.

> 
> 
> I've tried a couple of flags, such as
> setenv CPPFLAGS "-fPIC -DpgiFortran"
> (which it seems to ignore)
> 
> But honestly, I'm stuck. Any ideas from your side?
> Attached is the config file...
> 
> Cheers & Thanks
> Felix
> 

If you need the shared fortran library, let me know, otherwise build without it 
and see if that works.

Thanks,

Ed

Ticket Details
===================
Ticket ID: RWK-638692
Department: Support netCDF
Priority: Normal
Status: Closed