Circular src/nrnpython/inithoc.cpp <- src/nrnpython/inithoc.cpp dependency dropped

[pedroernesto]

Context

Overview of the issue

When building NEURON 8.0.2 from source on Jusuf, circular dependencies issues are found.

Expected result/behavior

Complete installation of the NEURON code, compiled with cmake

NEURON setup

• Version: master branch / 8.0.2
• cmake version 3.18.0
• Installation method : cmake --install .
• OS + Version: Rocky Linux 8.5 (Green Obsidian)
• Compiler + Version: gcc (GCC) 9.3.0

Minimal working example - MWE

• Modules loaded list:

  module load Stages/2020; \
  module load GCC/9.3.0; \
  module load X11/20200222; \
  module load Python/3.8.5; \
  module load CMake/3.18.0; \
  module load OpenMPI/4.1.0rc1; \
  module load netCDF-Fortran/4.5.3

• CMake build commands:

  
  mkdir -p build/nrn
  git clone https://github.com/neuronsimulator/nrn
  cd nrn
  cmake -DPYTHON_EXECUTABLE=$(which python3) -DNRN_ENABLE_PYTHON_DYNAMIC=ON -DCMAKE_INSTALL_PREFIX=../build/nrn

cmake --install .

## Logs

[  0%] Built target mkg3states
[ 23%] Built target interviews
[ 36%] Built target unidraw
[ 37%] Built target iclass
[ 37%] Built target idemo
[ 39%] Built target idraw
[ 42%] Built target nocmodl
[ 45%] Built target modlunit
[ 45%] Built target nrnversion_h
[ 45%] Update hh.mod for CoreNEURON compatibility
[ 45%] Built target hh_update
[ 45%] Generating help_data.dat
[ 45%] Built target help_data_dat
[ 98%] Built target nrniv_lib
[ 98%] Built target nrniv
[ 99%] Built target nrnpython3
[ 99%] Built target rxdmath
[100%] Built target rxd_cython_generated
gmake[2]: Circular src/nrnpython/inithoc.cpp <- src/nrnpython/inithoc.cpp dependency dropped.

[pedroernesto]

The problem was in compiling inside the nrn source directory, not in another directory that should be created instead.

[pramodk]

@pedroernesto : thanks for reporting! I have reproduced this issue in the morning but didn't get time to PR patch. As you mentioned, for now, avoid in-source build.

(I will open this issue as a reminder for us)