I keep getting libctx error every expression about evcxr HOT 4 CLOSED

Hi @GrayJack . Thanks for the report. To help figure out what's happening, would you be able to do the following?

• From evcxr, after entering an expression, type :last_compile_dir
• In a separate terminal, cd to the directory that it printed.
• Check to see if target/debug/deps/libctx.so exists.
• What about target/debug/libctx.so ?
• Run cargo rustc --message-format=json -- -C prefer-dynamic
• After that, which of those files exists?

Also possibly useful:

• Output of rustc --version
• What OS / distribution are you running?

On my system both files are created (target/debug/deps/libctx.so and target/debug/libctx.so). Actually, they're the same file, but one is hard linked to the other. I'm not sure why I chose to make use of the one in the "deps" directory. I note that cargo now emits some JSON that says what file was created (for me, it indicates the non-deps directory filename). Perhaps I should switch to reading that JSON.

from evcxr.

Sorry, forgot about those infos
Rustc: rustc 1.40.0-nightly (1423bec54 2019-11-05)
OS: Linux, version 5.3.10

From evcxr, after entering an expression, type :last_compile_dir
It gives me the same error

Error renaming '"/tmp/.tmpL77Dg7/target/debug/deps/libctx.so"' to '"/tmp/.tmpL77Dg7/target/debug/deps/libcode_3.so"': No such file or directory (os error 2)

In a separate terminal, cd to the directory that it printed.
The max it can go is /tmp/.tmp<random>/ with the following tree

.
├── Cargo.lock
├── Cargo.toml
└── src
    └── lib.rs

Check to see if target/debug/deps/libctx.so exists.
What about target/debug/libctx.so

Because of the above, neither exist

Maybe it's related to me having a custom target folder for my rust environment?

Run cargo rustc --message-format=json -- -C prefer-dynamic

Yeah, that proves it, it is because of my custom target folder

{"reason":"compiler-artifact","package_id":"ctx 1.0.0 (path+file:///tmp/.tmpL77Dg7)","target":{"kind":["cdylib"],"crate_types":["cdylib"],"name":"ctx","src_path":"/tmp/.tmpL77Dg7/src/lib.rs","edition":"2018","doctest":false},"profile":{"opt_level":"2","debuginfo":null,"debug_assertions":true,"overflow_checks":true,"test":false},"features":[],"filenames":["/home/grayjack/MySources/.cargo_target/debug/libctx.so"],"executable":null,"fresh":true}

from evcxr.

Ah, that makes sense. I assume you've set the target directory via the environment variable CARGO_TARGET_DIR? Or some other mechanism?

I'll make a change to ignore CARGO_TARGET_DIR.

from evcxr.

Yeah, via environment variable

from evcxr.