[CTG] Add cli param env_dir

[trdthg]

Description

#529 I think that a fixed env_dir either ./ or ~/riscv-arch-test/riscv-test-suite/env is not suitable for everyone anyway.

Why not set it as a new cli param?

I personally prefer to place riscv-arch-test in the current directory(test_dir) via a symbolic link, which would be ./riscv-arch-test/riscv-test-suite/env. Considering our different for the default path, I just casually wrote a ./ here.

[UmerShahidengr]

This will change the script to run CTG, all scripts will now require a new command line parameter otherwise existing scripts will stop working, I don't recommend such changes which will affect all users without proper discussion and documentation. This will require changes in the documentation and announcement for everyone that a new CLI parameter has been added.

[trdthg]

what about keep the default value to ~/riscv-arch-test/riscv-test-suite/env
At least all scripts do not need to be modified

[trdthg]

keep the default value to ~/riscv-arch-test/riscv-test-suite/env

done

[UmerShahidengr]

@trdthg since the CTG is now part of riscv-arch-tests, I dont find any reason to keep this variable dynamic, it can be set as ../riscv-test-suite/env and nobody will change it. It was supposed to be required when ctg was a separate repo and people had to give the parth of riscv-arch-tests before generating the tests.
Correct me if I am wrong, it seems like this change is not required in codebase.

[trdthg]

since the CTG is now part of riscv-arch-tests, I dont find any reason to keep this variable dynamic, it can be set as ../riscv-test-suite/env

Agree

However, there is another issue: Python uses the current working directory as . when calculating paths.

To obtain the correct file path for riscv-arch-tests, you can use the following calculation method

current_dir = os.path.dirname(os.path.abspath(__file__))
env_dir = os.path.join(current_dir, "../../riscv-test-suite/env")

But it is important to remind users to use pip install --editable path_to_ctg. Because riscv-arch-tests is not a Python package itself, if you directly use pip install path_to_ctg, the calculated path will also be wrong.

[UmerShahidengr]

@trdthg I have added the command pip install --editable . in ReadMe file to install ctg and isac. Do you mean it require any update?
If yes, then you may make the corresponding changes in Readme and CI to install ctg & isac properly.

[trdthg]

I have added the command pip install --editable . in ReadMe file

Thank you, no need to update

I just want to let users know that if they don't do that, error will occur