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bors f9e0239a7b Auto merge of #135695 - Noratrieb:elf-raw-dylib, r=bjorn3
Support raw-dylib link kind on ELF

raw-dylib is a link kind that allows rustc to link against a library without having any library files present.
This currently only exists on Windows. rustc will take all the symbols from raw-dylib link blocks and put them in an import library, where they can then be resolved by the linker.

While import libraries don't exist on ELF, it would still be convenient to have this same functionality. Not having the libraries present at build-time can be convenient for several reasons, especially cross-compilation. With raw-dylib, code linking against a library can be cross-compiled without needing to have these libraries available on the build machine. If the libc crate makes use of this, it would allow cross-compilation without having any libc available on the build machine. This is not yet possible with this implementation, at least against libc's like glibc that use symbol versioning. The raw-dylib kind could be extended with support for symbol versioning in the future.

This implementation is very experimental and I have not tested it very well. I have tested it for a toy example and the lz4-sys crate, where it was able to successfully link a binary despite not having a corresponding library at build-time.

I was inspired by Björn's comments in https://internals.rust-lang.org/t/bundle-zig-cc-in-rustup-by-default/22096/27
Tracking issue: #135694

r? bjorn3

try-job: aarch64-apple
try-job: x86_64-msvc-1
try-job: x86_64-msvc-2
try-job: test-various
2025-03-04 15:39:44 +00:00
.github Rollup merge of #137849 - jieyouxu:undo-workaround, r=Kobzol 2025-03-03 10:41:01 +01:00
compiler Auto merge of #135695 - Noratrieb:elf-raw-dylib, r=bjorn3 2025-03-04 15:39:44 +00:00
library Auto merge of #137959 - matthiaskrgr:rollup-62vjvwr, r=matthiaskrgr 2025-03-04 02:27:56 +00:00
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src Auto merge of #135695 - Noratrieb:elf-raw-dylib, r=bjorn3 2025-03-04 15:39:44 +00:00
tests Auto merge of #135695 - Noratrieb:elf-raw-dylib, r=bjorn3 2025-03-04 15:39:44 +00:00
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Cargo.lock Auto merge of #137752 - flip1995:clippy-subtree-update, r=Manishearth 2025-03-01 22:22:06 +00:00
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config.example.toml support rust.channel = "auto-detect" 2025-02-28 11:02:22 +01:00
configure Ensure ./configure works when configure.py path contains spaces 2024-02-16 18:57:22 +00:00
CONTRIBUTING.md docs: update contributing docs for submodule/subtree changes 2025-01-20 21:53:59 +08:00
COPYRIGHT dist: Re-work how we describe the licence of Rust in our distributions 2024-12-09 10:18:55 +00:00
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rustfmt.toml Use field init shorthand where possible 2024-12-17 14:33:10 -08:00
triagebot.toml triagebot.toml: Don't label test/rustdoc-json as A-rustdoc-search 2025-03-03 19:28:57 +00:00
x fix(x): fix a regex used to find python executable 2024-11-06 16:40:02 +03:00
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