rustc -o <dir>/<bin> fails

[mcandre]

I want my binaries to be output in a bin/ directory. But when I tell rustc to do this, it fails.

Source:

https://github.com/mcandre/mcandre/tree/736f1ab56761c0ee967b7686e027b6174bbdd007/rust/hello

Rust 0.9 says error: unable to open executable 'bin/hello'.

I upgraded my syntax (s/mod/crate/) and tried again with Rust 0.10, then 0.11.

Rust 0.10 and 0.11 don't even show an error, they silently fail.

$ cat hello.rs 
extern crate std;

use std::io::println;

fn main() {
  println("Hello World!");
}

$ make
mkdir -p bin/
rustc -o bin/hello hello.rs
bin/hello
make: bin/hello: No such file or directory
make: *** [test] Error 1

$ tree
.
├── Makefile
├── bin
└── hello.rs

1 directory, 2 files

Using rust from Homebrew, on Mac OS X 10.9.4 Mavericks.

[emberian]

Use --out-dir.

[mcandre]

--out-dir is overridden by -o, as described in the manual. I want to name both the directory and the binary.

[emberian]

Works for me on master:

/tmp/bar  
❯ vim hello.rs

/tmp/bar  8s
❯ ls
bin/  hello.rs

/tmp/bar  
❯ rustc -o bin/hello hello.rs

/tmp/bar  
❯ ls bin 
hello*

/tmp/bar  
❯ ./bin/hello 
Hello world

[emberian]

Crate name should be given by --crate-name instead of -o if you're already using --out-dir.

[emberian]

(Alternatively, use cargo)

[mcandre]

Upon further inspection, it was determined that some subprocess was calling cc, which was pointing to rvm's cc. I was able to fix this behavior by removing the rvm boot snippet from ~/.profile.