strip does not work on rust 1.70 binaries

[kiap]

Compiling any code with the standard library as shared.

env RUSTFLAGS="-C prefer-dynamic" cargo build -v --release

strip -s target/release/hello

I expected to see this happen:

the stripped version must have a smaller executable and have all symbols removed

Instead, this happened:

the size of the executable increased to 2.1 M and all symbols were there

rustc --version --verbose:

rustc 1.70.0 (90c541806 2023-05-31)
binary: rustc
commit-hash: 90c541806f23a127002de5b4038be731ba1458ca
commit-date: 2023-05-31
host: x86_64-unknown-linux-gnu
release: 1.70.0
LLVM version: 16.0.2

compiling as static or with musl works correctly

Worked as expected in all previous releases

I suspect LLVM 16 is the cause but cannot pinpoint the cause really.

tested on:

1. Red Hat Enterprise Linux release 8.8 (Ootpa)
2. CentOS Linux release 7.9.2009 (Core)
3. Rocky Linux 8.8

[saethlin]

I tried these instructions on Arch, and in the Docker images rockylinux:8 and centos:7. I couldn't reproduce this behavior.

Perhaps this is a new interaction we accidentally added with some other aspect of the system? Can you reproduce this with fresh installs or fresh Docker images?

[kiap]

Hello,

I found the issue, and it is patchelf which is incompatible with LLVM 16 generated binaries
My colleagues added patchelf to the build process to change the name of the standard library to avoid conflict.

Is there any way to rename the standard library at compile time or link time in rust?

[workingjubilee]

@kiap uh, can you explain... why you need to do this?