ICON and combinations including icon don't build with environment `jsc.2025.intel.psmpi`

[AGonzalezNicolas]

Working on JURECA.
Last week I noticed that ICON (or any combination with ICON e.g. icon+eclm) doesn't built when using the environment jsc.2025.intel.psmpi.
Last built I had with this environment is from January 2026.
I can try on another jsc machine but I don't think this is the cause.
Note: eclm, parflow and eclm-parflow built correctly with this environment.

[kvrigor]

What is the exact error message? Also the ./build_tsmp2.sh command?

[AGonzalezNicolas]

@kvrigor, you are right, ./build_tsmp2.sh works fine. I will have a look at the jube file.

[AGonzalezNicolas]

Error when building with the jube file:

checking for the fully qualified domain name of the host... jrlogin07.jureca
checking whether the Fortran compiler works... no
configure: error: in `/p/scratch/cslts/gonzalez5/TSMP2/JUBE_repo/benchmark/jube/outpath/000040/000001_build/work/TSMP2/bld/JURECADC_ICON/ICON/src/ICON-build':
configure: error: Fortran compiler cannot create executables
See `config.log' for more details

********************************************************************************
The users are recommended to run site-specific wrappers instead of this generic
configure script.

You can find the wrappers in '/p/scratch/cslts/gonzalez5/TSMP2/JUBE_repo/benchmark/jube/outpath/000040/000001_build/work/TSMP2/models/icon/config/<organization>/'.

If you are running a wrapper and still see this message than either you are
using a wrong one or the wrapper is broken, or there is really a problem with
the configure script.
********************************************************************************

gmake[2]: *** [CMakeFiles/ICON.dir/build.make:100: ICON/src/ICON-stamp/ICON-configure] Error 77
gmake[1]: *** [CMakeFiles/Makefile2:83: CMakeFiles/ICON.dir/all] Error 2
gmake: *** [Makefile:91: all] Error 2

[kvrigor]

I can replicate this error. Following the See 'config.log' for more details hint above, we can dig what's causing ICON build to fail:

configure:4184: checking whether the Fortran compiler works
configure:4206: /p/software/default/stages/2025/software/psmpi/5.10.0-1-intel-compilers-2024.2.0/bin/mpif90 -I/p/home/TSMP2/bin/JURECADC_ICON-
eCLM-ParFlow/OASIS3-MCT/include -I/p/software/default/stages/2025/software/netCDF-Fortran/4.6.1-ipsmpi-2024a/include -O2 -gdwarf-4 -march=native -pc64 -fp-mode
l source -traceback -qno-opt-dynamic-align -no-fma   -L/p/home/TSMP2/bin/JURECADC_ICON-eCLM-ParFlow/OASIS3-MCT/lib -lpsmile.MPI1 -lmct -lmpeu 
-lscrip  conftest.f -Wl,--as-needed /p/software/default/stages/2025/software/HDF5/1.14.5-ipsmpi-2024a/lib/libhdf5.a /usr/lib64/libpthread.a /p/software/default
/stages/2025/software/libaec/1.1.3-GCCcore-13.3.0/lib/libsz.so /p/software/jurecadc/stages/2025/software/zlib/1.3.1-GCCcore-13.3.0/lib/libz.so /usr/lib64/libdl.a /usr/lib64/libm.so iomp5 /usr/lib64/libpthread.a /p/software/jurecadc/stages/2025/software/libxml2/2.12.7-GCCcore-13.3.0/lib/libxml2.so /p/software/jurecadc/stages/2025/software/XZ/5.4.5-GCCcore-13.3.0/lib/liblzma.so /p/software/default/stages/2025/software/imkl/2024.2.0/mkl/2024.2/lib/libmkl_intel_lp64.so /p/software/default/stages/2025/software/imkl/2024.2.0/mkl/2024.2/lib/libmkl_intel_thread.so /p/software/default/stages/2025/software/imkl/2024.2.0/mkl/2024.2/lib/libmkl_core.so /p/software/default/stages/2025/software/imkl/2024.2.0/compiler/2024.2/lib/libiomp5.so -lm -ldl -lm -ldl -L/p/software/default/stages/2025/software/netCDF/4.9.2-ipsmpi-2024a/lib -L/p/software/default/stages/2025/software/netCDF-Fortran/4.6.1-ipsmpi-2024a/lib -lnetcdff -lnetcdf /p/software/jurecadc/stages/2025/software/zlib/1.3.1-GCCcore-13.3.0/lib/libz.so -L/p/home/TSMP2/bin/JURECADC_ICON-eCLM-ParFlow/OASIS3-MCT/lib -lpsmile.MPI1 -lmct -lmpeu -lscrip >&5
ifx: error #10236: File not found: 'iomp5'
configure:4210: $? = 1
configure:4248: result: no
configure: failed program was:
|       program main
| 
|       end
configure:4253: error: in `/p/home/TSMP2/bld/JURECADC_ICON-eCLM-ParFlow/ICON/src/ICON-build':
configure:4255: error: Fortran compiler cannot create executables

"Fortran compiler cannot create executables" because of the ifx: error #10236: File not found: 'iomp5'. We get this weird iomp5 error because it's a mis-formatted linker option,

.. which I suspect is generated by the linker depencies required by ZLIB.

TSMP2/cmake/BuildICON.cmake

Lines 97 to 99 in e74cc7d

	# ZLIB
	find_package(ZLIB REQUIRED)
	list(APPEND ICON_LIBS "${ZLIB_LIBRARIES}")

The interesting bit is that ICON build works on jsc.2026.intel.psmpi. @AGonzalezNicolas could you afford to move your JUBE workflows to Stages/2026, or do you strictly need them in Stages/2025?

[AGonzalezNicolas]

@kvrigor , do you mean with jsc.2026.nvhpc.openmpi? There is no jsc.2026.intel.psmpi.