Sourcing env.sh multiple times

[mmunoz-gmv]

The variables generated by the init.rb script in env.sh are set like this:

if test -z "$CMAKE_PREFIX_PATH"; then
  CMAKE_PREFIX_PATH="/home/esrocos/esrocos_workspace/install"
else
  CMAKE_PREFIX_PATH="/home/esrocos/esrocos_workspace/install:$CMAKE_PREFIX_PATH"
fi
export CMAKE_PREFIX_PATH

This causes that, when env.sh is sourced more than once, paths are appended to the environment variables several times.

~/esrocos_workspace$ printenv PYTHONPATH
/home/esrocos/.local/lib/python3.5/site-packages:/home/esrocos/.local/lib/python3.5/site-packages:/home/esrocos/.local/lib/python3.5/site-packages:/home/esrocos/.local/lib/python3.5/site-packages:/home/esrocos/tool-inst/include/ocarina/runtime/python:/home/esrocos/tool-inst/lib:

If a variable is expected to contain a list of paths, for instance PATH, this is harmless. But if it is expected to contain a single path, for instance CMAKE_PREFIX_PATH, it causes problems.
There should be a way to define the variables in init.rb so that the path is not appended, but I couldn't find it. Any suggestions?

[Kynneb]

Good question - this is really an autoproj issue I think.

[mmunoz-gmv]

Reported in the autoproj repo.

[mmunoz-gmv]

Actually, this comes from the init.rb in the package set. It's probably not an autoproj issue, but we're using a wrong autoproj command (env_inherit).