Re: [netcdfgroup] Linking netcdf on AIX with g++ 4.2.0

• To: Tom Kent <Tom.Kent@xxxxxxxx>
• Subject: Re: [netcdfgroup] Linking netcdf on AIX with g++ 4.2.0
• From: Ed Hartnett <ed@xxxxxxxxxxxxxxxx>
• Date: Wed, 09 Sep 2009 07:37:08 -0600

Tom Kent <Tom.Kent@xxxxxxxx> writes:

> Hello,
> Several of us are stumped and hoping someone can help.
> I'm getting errors linking to netcdf on AIX using g++ 4.2.0. Things
> compile fine, but
> I get undefined errors for ANY use of the classes in netcdfcpp.h
> (NcFile, NcVar, NcDim, etc...)
> To simplify debugging a small test program mimics our errors, so any
> fix to the simple test
> program below most likely will fix our more complex code link elsewhere.....
>
> #include <netcdf.hh>
> int main( int argc, char ** argv )
> {
> NcFile file("out.txt", NcFile::Replace);
> return 0;
> }
>
> compile works fine...
> setenv OBJECT_MODE 32
> g++ -o test.o -g -I/nco/ibm/wx15cp/netcdf32/include -c test.C
> or
> g++ -o test.o -g -fno-for-scope -fno-exceptions -ffriend-injection
> -Wno-write-strings -Wall -DKERNEL_WSIZE=32 -DLINUX_FILES=1
> -DALLOW_2_DIGIT_YEAR -DXT_CODE -DFTN_APPEND_UNDERSCORE -D_REENTRANT
> -I/nco/ibm/wx15cp/netcdf32/include -c test.C
>
> link has errors...
> g++ -v -o test test.o -L/nco/ibm/wx15cp/netcdf32/lib -lnetcdf_c++ -lnetcdf
> or
> g++ -v -o test test.o -L/nco/ibm/wx15cp/netcdf32/lib -lnetcdf -lnetcdf_c++
> gets these errors:
> ld: 0711-317 ERROR: Undefined symbol: .NcFile::NcFile(char const*,
> NcFile::FileMode, unsigned long*, unsigned long, NcFile::FileFormat)
> ld: 0711-317 ERROR: Undefined symbol: .NcFile::~NcFile()
>
> as I mentioned before...
> -exact same undefined errors for use of any of the classes in netcdfcpp.h
> -using g++ 4.2.0 on AIX
> -building 32 bit binary and trying to link to 32 bit netcdf lib....
> -exact same errors using netcdf 3.6.3 as well as 4.0.1
>
> Anyone seen this or conquered it?
> Thanks for any help. It's much appreciated...
>
> Tom

Howdy Tom!

Did you build netCDF from source?

If so, did you run "make check"?

There are C++ tests and examples that are built during make check...

Thanks,

Ed

-- 
Ed Hartnett  -- ed@xxxxxxxxxxxxxxxx

• References:
  • [netcdfgroup] Linking netcdf on AIX with g++ 4.2.0
    • From: Tom Kent