Linking error during FMU export of Geothermal Borefields OneUTubes / TwoUTubes, undefined reference to `dgetri_'

[tinoetzold]

Bug description

Trying to export the Example "IBPSA/Fluid/Geothermal/Borefields/Examples/RectangularBorefield.mo" as FMU unfortunatelly fails. The error message indicates the the linking process fails while trying to link the function `dgetri_'.

Same behaviour appears when exporting models including OneUTube and TwoUTubes as FMU, that work fine while simulationg within Omedit.

To reproduce:

1. Open example IPBSA/Fluid/Geothermal/Borefields/Examples/RectangularBorefield.mo
2. Right-click on example and choose Export -> FMU
3. FMU creation fails with error message (complete error message attached): C:/Users/ETZOLD/Programs/OpenModelica/tools/msys/ucrt64/bin/ld: CMakeFiles/RectangularBorefield.dir/objects.a(RectangularBorefield_functions.c.obj):RectangularBorefield_functions.c:(.text+0x1dd99): undefined reference to `dgetri_'
   clang: error: linker command failed with exit code 1 (use -v to see invocation)

Expected behavior
It is expected that the linking process during FMU export is set up to find the library containing the referenced function `dgetri_'

Desktop

• OpenModelica Omedit v1.24.3
• IBPSA Main Branch (downloaded January 28th 2025)
• Windows11

(similar issue appears on Ubuntu Linux 24.04 LTS with same version of OpenModelica and IBPSA. Under Linux, the libraries are dynamically linked, so the error appears when calling the FMU, but the error message indicates that the same function dgetri_ cannot be found.)

IBPSA_borefield_FMU_error_message.txt

Thank you very much!
Best regards
Tino

[mwetter]

This model should work for the FMI export, see
https://libraries.openmodelica.org/branches/master-fmi/Buildings_latest/Buildings_latest.html
for the flags.

If it won't work please report it to the OpenModelica issue tracker unless you see something wrong with the model implementation.

[tinoetzold]

When checking the results of the FMU rund shown in the Link "sim" it shows that the simulation fails:

https://libraries.openmodelica.org/branches/master-fmi/Buildings_latest/files/Buildings_latest_Buildings.Fluid.Geothermal.Borefields.Examples.RectangularBorefield.sim

Building the FMU under Linux works since the libraries are dynamically linked, therefore the FMU fails when running it, this is how the FMU was compiled in the OpenModelica-Test. Under Windows somehow libraries are statically linked, therefore the issue appears during FMU generation.

I'll create a report in openmodelica.

Best regards!
Tino