# Gromacs Developer Setup

**URL:** <https://gromacs.bioexcel.eu/t/gromacs-developer-setup/6770>\
**Category:** Developers discussions\
**Created:** [July 7, 2023, 2:15am UTC](https://gromacs.bioexcel.eu/t/gromacs-developer-setup/6770 "2023-07-07T02:15:05Z")\
**Posts on this page:** 1\
**Showing post:** 4

<div class="post-metadata">

**Author:** ![shaunak](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@shaunak](https://gromacs.bioexcel.eu/u/shaunak)\
**Post date:** [July 8, 2023, 4:27am UTC](https://gromacs.bioexcel.eu/t/gromacs-developer-setup/6770/4 "2023-07-08T04:27:37Z")

</div>

I did try that. I already have the .so files in my `/usr/lib` :

```auto
[sbadani@sbadaniKDE ~]$ ls /usr/lib/libfftw3f.so
/usr/lib/libfftw3f.so

```

So I built it in vscode, and this is the command that was run :

```auto
[proc] Executing command: /usr/bin/cmake --no-warn-unused-cli -DCMAKE_PREFIX_PATH:STRING=/usr/lib/ -DGMX_BUILD_OWN_FFTW:STRING=OFF -DDREGRESSIONTESTS_DOWNLOAD:STRING=OFF -DCMAKE_EXPORT_COMPILE_COMMANDS:BOOL=TRUE -DCMAKE_BUILD_TYPE:STRING=Debug -S/home/sbadani/Work/MD/gromacs -B/home/sbadani/Work/MD/gromacs/build -G Ninja

```

However, it gives the following error:

```auto
[cmake] Could not find fftwf_plan_many_[r2c|c2r] in /usr/lib/libfftw3f.so, take a
[cmake] look at the error message in

```

Does this have to do with fftw single precision?

Others have also reported a similar issue in this thread :

> [@FFTW Function Checking Fails on Windows Installation](https://gromacs.bioexcel.eu/t/fftw-function-checking-fails-on-windows-installation/1293):
>
> GROMACS version: 2020.4 GROMACS modification: No Hello, Sorry if this is an obvious question, I always seem to have trouble building software like this. I’m looking to install GROMACS on my machine running Windows 10, and it seems like the best way to do that is with the CMake GUI from a pre-built FFTW library. So, I’m trying to do exactly that. I’ve built an FFTW .lib file from the latest library release using the VSC++ lib tool. In the CMake GUI, I point to the extracted GROMACS folder for …

I’m working on archlinux, not windows, but still facing the same error :).  
If you’ve faced this error before, any help would be appreciated.

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