Learning Forum

[as188]

When attempting to set up a UDF compilation environment for Fluent 2025R1 using Build Tools for Visual Studio 2022 on Windows 11, udf.bat looks at the wrong directory. In a fresh installation of the latest MSVC Build Tools and Ansys Student (installed to default locations), udf.bat looks at the following location (taken from $(FLUENT_ROOT)\$(ARCH)\udf.bat, line 13):

set MSVC_DEFAULT=%ProgramFiles%\Microsoft Visual Studio\2022

However, Build Tools does not install to Program Files, but rather Program Files (x86). Changing the line to the following allows detection of the MSVC compiler by the script:

set MSVC_DEFAULT=%ProgramFiles(x86)%\Microsoft Visual Studio\2022

I do not know if this is a regression from previous versions of Fluent or if the VS IDE installs to %ProgramFiles% by default, but I wanted to report this as a potential bug. This is the only forum I have access to, so please let me know if there is a more appropriate location I can report this to.

[MangeshANSYS]

Hello

1. There is a built in clang compiler which can be used
2. if an external compiler needs to be used, then try starting Fluent from the x64 Native Tools Command Prompt or similar option in Visual Studio 2022
   
   here is an example showing Visual Studio 2019