On 2/26/24 1:41 PM, Richard W.M. Jones wrote:
> It's a bit unfortunate that Rust used the shebang syntax here,
> although in practice they couldn't be confused as these files
> shouldn't ever be executable.
It's _possible_ to play comment tricks for executable rust scripts,
because rustc allows and ignores actual shebang lines.
#!/bin/bash -e
#![cfg(unix)] /* (any attribute as a shell comment)
# shell here to self-compile
rustc "$0" -o ./foo
exec ./foo "$@"
(end rust comment) */
// continue in rust here
fn main() { ... }
There is also a real "cargo script" feature in development:
https://github.com/rust-lang/cargo/issues/12207
> It's also correct that RPM worries about this file since it is
> installed (in debuginfo) and appears to contain a shebang.
>
>> Is there a way to tell rpmbuild not to worry about this?
>
> rust.spec has this in %prep, and /usr/lib/rpm/redhat/brp-mangle-shebangs
> only seems to care about executable files, so this should help:
>
> # Sometimes Rust sources start with #![...] attributes, and "smart" editors think
> # it's a shebang and make them executable. Then brp-mangle-shebangs gets upset...
> find -name '*.rs' -type f -perm /111 -exec chmod -v -x '{}' '+'
I may have to make that smarter if "cargo script" gets used.
For now though, clearing everything should be fine.
--
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