Nemo compilation fails when model path contains a directory name with digits only

When a directory name contains only digits, Nemo cannot be compiled because the directory name is erased from Nemo path.
For example:

cd /home/ar0s/SRC/NEMO/0/branch_dev
./makenemo -m X64_AA_INTEL_OMPI -r ORCA2_ICE_PISCES -j 8
...
ar: creating /home/ar0s/SRC/NEMO/branch_dev/cfgs/ORCA2_ICE_PISCES/BLD/tmp/lib__fcm__nemo.a
mpifort -o nemo.exe /home/ar0s/SRC/NEMO/branch_dev/cfgs/ORCA2_ICE_PISCES/BLD/obj/nemo.o ...

Compilation fails in this case because the 0 directory is not present anymore in the path used by ar and mpifort to generate Nemo object and executable
I don't know if it comes from makenemo, mk scripts or FCM itself (I tried the latest version of FCM and the issue is still present)...
Compilation works well if 0 directory is renamed as nemo0.
Any suggestion ?