WARN `rustc_codegen_ssa::back::link` Linker does not support -static-pie command line option

[iquanxin]

Why does this warning appear? How should I remove it?

Code

fn main() {
    println!("Hello, world!");
}

Meta

rustc --version --verbose:

rustc 1.68.2 (9eb3afe9e 2023-03-27)
binary: rustc
commit-hash: 9eb3afe9ebe9c7d2b84b71002d44f4a0edac95e0
commit-date: 2023-03-27
host: x86_64-unknown-linux-gnu
release: 1.68.2
LLVM version: 15.0.6

Error output

[root@7700K less1]# cargo build --target=x86_64-unknown-linux-musl && file target/x86_64-unknown-linux-musl/release/less1 && target/x86_64-unknown-linux-musl/release/less1
WARN rustc_codegen_ssa::back::link Linker does not support -static-pie command line option. Retrying with -static instead.
    Finished dev [unoptimized + debuginfo] target(s) in 0.00s
target/x86_64-unknown-linux-musl/release/less1: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, BuildID[sha1]=cbe92f394971a715cab10ab360b28e03bfaa825e, not stripped
Hello, world!
[root@7700K less1]#

Backtrace

<backtrace>

[Noratrieb]

What's your operating system/distro/version?

[iquanxin]

你的操作系统/发行版/版本是什么？

[root@ecs-328561 ~]# uname -a
Linux ecs-328561 3.10.0-1160.53.1.el7.x86_64 #1 SMP Fri Jan 14 13:59:45 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
[root@ecs-328561 ~]# lsb_release -a
LSB Version: :core-4.1-amd64:core-4.1-noarch
Distributor ID: CentOS
Description: CentOS Linux release 7.9.2009 (Core)
Release: 7.9.2009
Codename: Core
[root@ecs-328561 ~]#

[iquanxin]

你的操作系统/发行版/版本是什么？

[root@7700K ~]# uname -a
Linux 7700K 4.4.0-19041-Microsoft #1237-Microsoft Sat Sep 11 14:32:00 PST 2021 x86_64 x86_64 x86_64 GNU/Linux
[root@7700K ~]# cat /etc/redhat-release
CentOS Linux release 7.9.2009 (Core)
[root@7700K ~]#

[jyn514]

CentOS 7 is ancient, it was released in 2014. This is probably a real incompatibility with the command line we generate to pass to the linker.

That said, it looks like -static worked correctly as a fallback, so maybe we should downgrade this to an INFO level log?

cc @cuviper

[cuviper]

This is probably a real incompatibility with the command line we generate to pass to the linker.

Yes, and the fallback is intentionally in place to deal with that: #72708

Also, note that CentOS 7 does have newer tools available on the side. First yum install centos-release-scl, and then you can install devtoolset-11-gcc. Start a command with that PATH like scl enable devtoolset-11 -- bash, or add it to your existing shell with source scl_source enable devtoolset-11.

maybe we should downgrade this to an INFO level log?

I would agree with that, at least when the PIE part is getting enabled implicitly.
(If it was explicitly requested by -Crelocation-model, one might argue it shouldn't fallback at all.)