Symbol ‘nf_netcdf4’ at (1) has no IMPLICIT type; did you mean ‘nf_cdf5’?

[Prachi]

What does the error signify and how can we rectify it

 

[kwerner]

Hi,
I first would like to apologize for the long delay in response. We were busy preparing for our WRF tutorial and have gotten behind on forum responses.
Are you still struggling with this error, or were you able to search online to find the solution? If you're still struggling, please provide additional information - such as which files you have modified and attach the error log, as well. Thanks!

 

[Polly_LO]

Good day! Did you find the solution of this problem?
I tried to install 3DVAR with intel (dmpar): all 44 exe files were generated, but da_wrfvar.exe and gen_be didn't work correctly.
And I have the error message in compilation log file: da_rad_diags.f(1739): error #6404: This name does not have a type, and must have an explicit type. [NF_NETCDF4].
Thanks for reply!

 

[benfucai]

I also ran into this problem this morning, the details is as follows:

gfortran -c -O2 -ftree-vectorize -funroll-loops -w -ffree-form -ffree-line-length-none -fconvert=big-endian -frecord-marker=4 -fdefault-real-8 -I/root/Build_WRF/LIBRARIES/netcdf/include da_rad_diags.f
da_rad_diags.f:1751:52:

1751 | ios = NF_CREATE(trim(ncname), NF_NETCDF4, ncid)
| 1
Error: Symbol ‘nf_netcdf4’ at (1) has no IMPLICIT type; did you mean ‘nf_cdf5’?

and the WRF version is 4.6.0

Best regards,
Ben

 

[benfucai]

here is a workaround:

1. copy netcdf4.inc from folder netcdf-fortran-VERSION/fortran to the $NETCDF/include since the symbols needed are in this include file
2. open var/build/da_rad_diags.f90 and add #include "netcdf4.inc" right after the line #include "netcdf.inc" then save

now, every thing should work!

 

[benfucai]

the root cause is:

netcdf4 was not enabled while configuring netcdf-c, so we *MUST* enable netcdf4, otherwise you will definitely run into more difficult problems soon