topic Re: Include netCDF in my Fortran projet in Intel® Fortran Compiler

Include netCDF in my Fortran projet

Lamine06F — Thu, 28 Sep 2023 12:13:31 GMT

Hello,

Suppose this is the code

Subroutine netCDF

USE netcdf

implicit none

print*,"netCDF is working"

end subroutine netCDF

(copied from this link https://community.intel.com/t5/Intel-Fortran-Compiler/Link-NetCDF-Fortran-library-to-Visual-Studio-2008-Intel-Composer/m-p/1036966)

My objective is to link netCDF to my project. I have installed netCDF-C executable because from what I have read, it is necessary (link https://downloads.unidata.ucar.edu/netcdf/) and download netCDF-FORTRAN 4.6.1 (same link as above) . So how should I do to link netCDF with my project.

Thank you

Re:Include netCDF in my Fortran projet

RahulC_Intel — Thu, 28 Sep 2023 18:33:50 GMT

Hi Diallo, we are transferring this thread to the respective team for further help. Please refer to the link: https://community.intel.com/t5/Intel-Fortran-Compiler/bd-p/fortran-compiler and find your post under the Intel® Fortran Compiler community.

Re: Include netCDF in my Fortran projet

Steve_Lionel — Fri, 29 Sep 2023 15:07:01 GMT

As netCDF does not appear to provide Visual Studio projects, just libraries and include/module files, the way to do this is to:

1. Right click on your Fortran project, select Properties.

2. Select Fortran > General and add the path to the netCDF Include folder in the property "Additional include directories".

3. Locate the netCDF import library in the netCDF lib folder and add it to your project as if it were a source file.

4. When running the program, the netCDF bin folder must be included in the PATH environment variable.

Re: Include netCDF in my Fortran projet

Lamine06F — Sun, 01 Oct 2023 12:31:57 GMT

You are specifying which netCDF I have to link. From webpage, there are to netCDF : netCDF-C and netCDF-FORTRAN. So you are talking about netCDF-C or netCDF-FORTRAN

Re: Include netCDF in my Fortran projet

Steve_Lionel — Sun, 01 Oct 2023 14:14:03 GMT

netCDF-Fortran is provided as sources only, with Linux-style makefiles. Given that your example has a USE of a netcdf module, that strongly suggests that you need the Fortran version of netCDF. You'll then need to figure out how to create a Visual Studio project to build it.

Re: Include netCDF in my Fortran projet

mfinnis — Sun, 01 Oct 2023 16:09:57 GMT

I posted a step by step procedure for building the netCDF fortran libraries a while ago. At the time I wasn't familiar with CMake so it wasn't as clear as it could have been. Since then I have used CMake quite a bit and in some cases I use it rather than VS solutions and projects directly and use it to generate a VS solution when required.

With the proviso that I haven't used netCDF for anything other than running some of the supplied examples, here is a procedure for building the netCDF fortran library for use with ifort in Windows:

If CMake is not installed then download CMake Widows x64 Installer from https://cmake.org/download/ and install.

Download netCDF-3 64-bit Windows binary netCDF4.9.2-NC3-64.exe from https://downloads.unidata.ucar.edu/netcdf/

Download netcdf-fortran-main.zip from https://github.com/Unidata/netcdf-fortran (https://codeload.github.com/Unidata/netcdf-fortran/zip/refs/heads/main)

(netcdf-fortran-4.6.1.zip from https://downloads.unidata.ucar.edu/netcdf/ needs some files to be generated which aren't on a Windows system - or not on mine at least.)

Install netCDF-3 libraries
(If netCDF is not added to the system PATH it will be required to be accessible to any applications that use it.)
Destination folder G:\netCDF\netCDF 4.9.2 (for the sake of example netCDF is installed in G:\netCDF)
Install all components

Extract all files netcdf-fortran-main.zip to G:\netCDF\netcdf-fortran-main-4.6.1

Run CMake
Where is the source code: G:/netCDF/netcdf-fortran-main-4.6.1/netcdf-fortran-main
Where to build the binaries: G:/netCDF/netcdf-fortran-main-4.6.1/MyBuild

Press Configure
Specify the generator for this project: Visual Studio ?? ????
Optional platform for generator: x64
Use default native compilers

will fail: ensure BUILD_SHARED_LIBS is UNCHECKED
set NETCDF_C_LIBRARY to G:/netCDF/netCDF 4.9.2/lib/netcdf.lib

Press Configure
will fail: set NETCDF_C_INCLUDE_DIR to G:/netCDF/netCDF 4.9.2/include

Press Configure
(will produce a number of not found messages in red but will end with "Configuring done" in output window)

Press Generate
(short display of progress dialog followed by "Generating done" in output window)

Close CMake

Go to folder G:\netCDF\netcdf-fortran-main-4.6.1\MyBuild

Open NC4F.sln in Visual Studio

In project netcdff open file module_netcdf_nc_data.F90 and insert

#else Integer(C_INT), Parameter :: NC_ENOPAR = -114 Integer(C_INT), Parameter :: NC_NOQUANTIZE = 0 Integer(C_INT), Parameter :: NC_QUANTIZE_BITGROOM = 1

above the #endif at the end of the module

Build netcdff (IFORT) (dependencies will be built first)

To check functionality:

Build and run F77_tests_pres_temp_4D_wr followed by F77_tests_pres_temp_4D_rd
Build and run F90_tests_pres_temp_4D_wr followed by F90_tests_pres_temp_4D_rd

(If netcdf.dll is not in the path, add path=G:\netCDF\netCDF 4.9.2\bin to the Environment item of the Debugging tab of the projects' properties - the example projects can all be selected in Solution Explorer and the Environment item set in all of them at once.)

Re: Include netCDF in my Fortran projet

Lamine06F — Mon, 02 Oct 2023 17:45:23 GMT

I would like to thank both of your for your answers. They have helped me a lot.

@mfinnis Your answer was well detailed and I have followed your instructions, but I failed to run Cmake. I download netCDF4.9.2-NC3-64.exe from https://downloads.unidata.ucar.edu/netcdf/ and added it the PATH (pic1.png). Next, I download https://codeload.github.com/Unidata/netcdf-fortran/zip/refs/heads/main and unzipped it at C:\Program Files\netCDF 4.9.2 (pic2.png). Then I downloaded Cmake from https://cmake.org/download/ .

Next I tried to run Cmake provinding :

Where is the source code : C:\Program Files\netCDF 4.9.2\netcdf-fortran-main

Where to build the binaries: C:\Program Files\netCDF 4.9.2\netcdf-fortran-main\Mybuild

Then I pressed configure but I got these errors (check pic4.png).

Please what have I missed.

Thanks!

Re: Include netCDF in my Fortran projet

mfinnis — Mon, 02 Oct 2023 18:21:38 GMT

You can't write to Program Files or any of its subfolders so you need MyBuild to be somewhere else. I think there is config file written to the source directory as well so you can't have the source in Program Files either.

Re: Include netCDF in my Fortran projet

Lamine06F — Tue, 03 Oct 2023 08:02:03 GMT

Hello @mfinnis

I put MyBuild folder in somewhere (C:/Users/lamin/source/repos/netCDF/MyBuilder) then I run Cmake. I have attached 3 pictures so that you can see the progression. pic5.png shows that some files are not found. pic6.nog shows that how it failed. pic6.png ( I have unchecked BUILD_SHARED_LIBS ) but NETCDF_C_LIBRARY is missing.

Thank you for your help!

Re: Include netCDF in my Fortran projet

mfinnis — Tue, 03 Oct 2023 10:53:57 GMT

Try starting again. Delete your build directory and ensure there is nothing in your system path that relates to netCDF. Run CMake again. Attached are the screen shots on my machine of: Configure1.png, post first Configure after which BUILD_SHARED_LIBS is unchecked and NETCDF_C_LIBRARY is set to G:/netCDF/netCDF 4.9.2/lib/netcdf.lib; Configure2.png, post second Configure after which NETCDF_C_INCLUDE_DIR is set to G:/netCDF/netCDF 4.9.2/include; ConfiguringDone.png, post third Configure after which Generate generates the VS solution. ConfigureingDone.txt contains the contents of the status window after the third Configure.

Re: Include netCDF in my Fortran projet

Lamine06F — Tue, 03 Oct 2023 21:21:15 GMT

Hello @mfinnis,

Your solution works out well.

My last question is what do mean by this sentence : 'Build netcdff (IFORT) (dependencies will be built first)'. Which dependencies should I build first.

Best regard!

Re: Include netCDF in my Fortran projet

mfinnis — Wed, 04 Oct 2023 09:30:05 GMT

It was just to point out that building netcdff would also build its dependancies, which can be seen from the Project Dependancies menu item are ZERO_CHECK (a CMake thing I think) and netcdff_c (a small C library required for netcdff). These are built automatically when building netcdff and are why you wil see something like "Build: 3 succeeded, 0 failed, 0 up-to-date, 0 skipped" when building netcdff.

Re: Include netCDF in my Fortran projet

Lamine06F — Fri, 06 Oct 2023 08:29:53 GMT

Hello @mfinnis ,

Sorry to disturb you again. When I build netcdff(ifort), I have a lot error. I have attached a picture.

Re: Include netCDF in my Fortran projet

andrew_4619 — Fri, 06 Oct 2023 09:02:05 GMT

The first errors are the interesting ones, we don't see that. An error compiling a module then cascades a whole list of consequential errors that are of little interest.

Re: Include netCDF in my Fortran projet

mfinnis — Fri, 06 Oct 2023 09:17:59 GMT

Did you make the edit to module_netcdf_nc_data.F90?

Re: Include netCDF in my Fortran projet

Lamine06F — Fri, 06 Oct 2023 20:28:22 GMT

Yes I did it.

Re: Include netCDF in my Fortran projet

mfinnis — Sat, 07 Oct 2023 09:17:24 GMT

I can't see all the errors so it's difficult to say. I will add that if I comment out the edit to module_netcdf_nc_data.F90 and rebuild I get the same errors as you appear to have - what I can see is the same and there are 46 errors. Maybe double check that you have done what you think you have done, clean the solution and rebuild.

Re: Include netCDF in my Fortran projet

Lamine06F — Sat, 07 Oct 2023 18:21:57 GMT

I have gone through, but I am still getting the same errors. Here is errors file.

Re: Include netCDF in my Fortran projet

mfinnis — Sat, 07 Oct 2023 19:41:21 GMT

As you can see, module_netcdf_nc_data.F90 compiles ok. When module_netcdf_nf_data.F90 is compiled it fails because NC_NOQUANTIZE and NC_QUANTIZE_BITGROOM are not defined. The file module_netcdf_nf_data.F90 should use netcdf_nc_data. The edit above ensures that those two parameters are defined. So you need to find out why they're not. Failing that you can set NF_NOQUANTIZE = 0 and NF_QUANTIZE_BITGROOM = 1 in module_netcdf_nf_data.F90 as they are the only places NC_NOQUANTIZE and NC_QUANTIZE_BITGROOM are used.

What is strange is that module_netcdf_nc_interfaces.F90, which also uses netcdf_nc_data and accesses NC_ENOPAR, the other parameter in the edit, compiles ok.

Re: Include netCDF in my Fortran projet

Lamine06F — Sun, 08 Oct 2023 19:09:01 GMT

@mfinnis

After setting NF_NOQUANTIZE = 0 and NF_QUANTIZE_BITGROOM = 1 in module_netcdf_nf_data.F90, It compile well. Few errors appeared nf_nc_noparallel.F90, and I solve them by setting status=0.

To come to my first question, how to link my netCDF (or MyBuilder) to my Fortran program (attached).

Thank for your incredible help.