[cudau.95]

Hi Guys! I'm a student. I tried defining the UDF properties of steam follow IF97. But When I Complier I Had an error :


\PROGRA~1\ANSYSI~1\v211\fluent"\fluent21.1.0\src\u e -I"C:\PROGRA~1\ANSYSI~1\v211\fluent"\fluent21.1.0\s rc\dpm -I"C:\PROGRA~1\ANSYSI~1\v211\fluent"\fluent21.1.0\s rc\dbns -I"C:\PROGRA~1\ANSYSI~1\v211\fluent"\fluent21.1.0\c ortex\src -I"C:\PROGRA~1\ANSYSI~1\v211\fluent"\fluent21.1.0\c lient\src -I"C:\PROGRA~1\ANSYSI~1\v211\fluent"\fluent21.1.0\t grid\src -I"C:\PROGRA~1\ANSYSI~1\v211\fluent"\fluent21.1.0\m ultiport\src -I"C:\PROGRA~1\ANSYSI~1\v211\fluent"\fluent21.1.0\m ultiport\mpi_wrapper\src -I"C:\PROGRA~1\ANSYSI~1\v211\fluent"\include ..\..\src\testif97.cpp ..\..\src\IF97.h
Microsoft (R) C/C++ Optimizing Compiler Version 19.00.24210 for x64
Copyright (C) Microsoft Corporation. All rights reserved.

cl : Command line warning D9024 : unrecognized source file type '..\..\src\IF97.h', object file assumed
cl : Command line warning D9027 : source file '..\..\src\IF97.h' ignored
testif97.cpp
C:\Program Files (x86)\Windows Kits\10\include\10.0.14393.0\ucrt\sys/stat.h(239): error C2375: '_stat64i32': redefinition; different linkage
C:\Program Files (x86)\Windows Kits\10\include\10.0.14393.0\ucrt\sys/stat.h(185): note: see declaration of '_stat64i32'
NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\BIN\x86_amd64\cl.EXE"' : return code '0x2'
Stop.

Done.


Can you help me fix it?. Thankfully!

[pakk]

What is in IF97.h?

Normally, I never add a header file...

[cudau.95]

Originally Posted by pakk

What is in IF97.h?

Normally, I never add a header file...

I already copied the header file to the \fluent\fluent21.1.0\src folder. But when I compile I still get the following error:

testif97.cpp
C:\Program Files (x86)\Windows Kits\10\include\10.0.14393.0\ucrt\sys/stat.h(239): error C2375: '_stat64i32': redefinition; different linkage
C:\Program Files (x86)\Windows Kits\10\include\10.0.14393.0\ucrt\sys/stat.h(185): note: see declaration of '_stat64i32'
NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\BIN\x86_amd64\cl.EXE"' : return code '0x2'
Stop.

[rupak504]

its showing Nmake error, why don't you try in-built compiler

[cudau.95]

Originally Posted by rupak504

its showing Nmake error, why don't you try in-built compiler

it got the following error:

[pakk]

Have you successfully compiled UDFs in the past, or is this the first time you try it (on this computer)?

[AlexanderZ]

looks like there is some problem with compiler, may be x32 x64 version problem

[cudau.95]

Originally Posted by pakk

Have you successfully compiled UDFs in the past, or is this the first time you try it (on this computer)?

Thank you! This is the first time I compiling.

This is my file. please help me compile it.

udf.zip

[cudau.95]

Originally Posted by AlexanderZ

looks like there is some problem with compiler, may be x32 x64 version problem

Let me know How do I fix that? Thankfully!

[pakk]

Originally Posted by cudau.95

Thank you! This is the first time I compiling.

This is my file. please help me compile it.

Attachment 85631

Then first try a UDF from the manual, just to make sure your code is not the problem. You use C++, but all examples in the manual are C.

[cudau.95]

Originally Posted by pakk

Then first try a UDF from the manual, just to make sure your code is not the problem. You use C++, but all examples in the manual are C.

Thank you!. For the *.C file I compiled successfully. So how do I compile the *.CPP file?

[AlexanderZ]

call your udf as *.c file and compile

[cudau.95]

Originally Posted by AlexanderZ

call your udf as *.c file and compile

Please! Can you help me complier my udf ?

udf.zipudf.zip

[xicheng]

Hi, cudau.95

Have you finally solved this issue?

I also want to include IF97 in my UDF but meet the same error.

Best regards,
Xicheng

[SSG_NJ]

Hi folks,

I'm trying to build and load my UDF in Fluent 2023 R1. I have tried installing Visual Studio 2019 Professional and Visual Studio 2017 Community. The error still persists.

I have compiled UDFs successfully in Fluent before and I've made necessary changes in the "Environment Variables" path in 'This PC' but to no avail. I've had faced the infamous 'nmake error' that plagues a lot of people and I managed to fix that by making the changes I mentioned earlier.

The strange part of this is that for whatever reason the UDF compiles, builds and loads with no problem on my laptop but it doesn't on my PC. I've made the exact same changes on them both, both run Windows 10, both have the same Visual Studio version (2017), with the only difference that the desktop PC has a Fluent 2023 R1 version while my laptop has Fluent 2022 R1 version.

The error I get when trying to build the UDF is:

NMAKE : U1077: '"C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\bi n\HostX86\x64\cl.EXE"' : return code '0x2'
Stop.

The UDF is coded in 'C' and works flawlessly on my laptop so I know that the code is not the problem.

Kindly help as soon as you can ! Thanks a lot!

[SSG_NJ]

Originally Posted by AlexanderZ

call your udf as *.c file and compile

Can you please see the post I made above about the same error and see if you could help me please?

I just tried with Visual Studio 2022 Community Edition but the error still persists as can be seen in the attached screenshot.

I should also mention that apart from changing the Path in Environment Variables, I also tried launching Fluent via the "Cross Tools" command prompt of Visual Studio - both x86 to x64 and x64 to x86. Even that didn't help either!

[SSG_NJ]

I was FINALLY able to figure it out after trying out almost everything that is known.

This applies to Fluent 2023 R1 which is what I'm working on

1. Install Visual Studio 2017 Community edition (This link works as of today 6-Jul-2023: https://visualstudio.microsoft.com/t...mmunity&rel=15 ) [2019 version might also work, I'm not sure]

2. Ensure Universal Windows Platform development and Desktop development with C++ are installed in Visual Studio. These are the ONLY two main packages you need. Keep the default individual components checked and ONLY add Windows 8 SDK as the extra component (you'll find this under 'Desktop development with C++') and install and launch Visual Studio 2017

3. Restart the system (not absolutely necessary but just in case)

4. Change the UDF file extension from .c to .cpp

5. Build and load the .cpp file in Fluent

And Presto!... Fluent now compiles your code.

Took me 11 hours or so of grueling troubleshooting but it finally works!

Enjoy!