Re: [netcdfgroup] netcdf

Mohamed,

These are missing library symbol errors. I suspect that you need to add this to the top of each program unit that has Netcdf calls:

   use netcdf

This is because the Netcdf Fortran 90 interface uses modules. You can't properly link to the Netcdf F90 library without this declaration.

For diagnosis, your program is trying to link to this:

   __netcdf__nf90_open

But with a correct "use" statement it should be seeking a symbol named something like this (the name change may vary by compiler and platform):

   ___netcdf_MOD_nf90_open

I might be wrong about all of this if you are on a platform or compiler that uses Fortran 90 linking conventions much different than what I am familiar with. If "use" doesn't fix it, then please provide identification and version info for your platform, compiler, and netcdf version.

Dave Allured
CU/CIRES Climate Diagnostics Center (CDC)
http://cires.colorado.edu/science/centers/cdc/
NOAA/ESRL/PSD, Climate Analysis Branch (CAB)
http://www.cdc.noaa.gov/

Mohamed Mohamed wrote:
I worked with FVCOM software. When I started to get netcdf output type I
received the following error:

mod_lag.f90:(.text+0x89f6): undefined reference to
`__netcdf__nf90_put_att_text'
mod_lag.f90:(.text+0x8a1e): undefined reference to
`__netcdf__nf90_put_att_text'
mod_lag.f90:(.text+0x8a36): undefined reference to
`__netcdf__nf90_enddef'
mod_lag.f90:(.text+0x8a45): undefined reference to
`__netcdf__nf90_close'
mod_lag.f90:(.text+0x8a69): undefined reference to `__netcdf__nf90_open'
mod_lag.f90:(.text+0x8b00): undefined reference to
`__netcdf__nf90_put_var_1d_fourbytereal'
mod_lag.f90:(.text+0x8b74): undefined reference to
`__netcdf__nf90_put_var_1d_fourbytereal'
mod_lag.f90:(.text+0x8be8): undefined reference to
`__netcdf__nf90_put_var_1d_fourbytereal'
mod_lag.f90:(.text+0x8c57): undefined reference to
`__netcdf__nf90_put_var_1d_fourbytereal'
mod_lag.f90:(.text+0x8ccb): undefined reference to
`__netcdf__nf90_put_var_1d_fourbytereal'
mod_lag.o:mod_lag.f90:(.text+0x8d3f): more undefined references to
`__netcdf__nf90_put_var_1d_fourbytereal' follow
mod_lag.o: In function `__mod_lag__dump_lag_restart':
mod_lag.f90:(.text+0x8dae): undefined reference to
`__netcdf__nf90_put_var_1d_fourbyteint'
mod_lag.f90:(.text+0x8e25): undefined reference to
`__netcdf__nf90_put_var_1d_fourbyteint'
mod_lag.f90:(.text+0x8e34): undefined reference to
`__netcdf__nf90_close'
mod_lag.f90:(.text+0x90f5): undefined reference to
`__netcdf__nf90_strerror'
collect2: ld returned 1 exit status
make: *** [fvcom] Error 1
[enxmabm@caunton FVCOM_source]


Any ideas?

Thanks


Mali
SChEME Department
Faculty of Engineering University of Nottingham Nottingham (NG7 2RD) UK Fax: 0044(0)115 951 4115

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