diff --git a/compiler/rustc_target/src/spec/targets/x86_64_unknown_linux_none.rs b/compiler/rustc_target/src/spec/targets/x86_64_unknown_linux_none.rs index 900dbed205c8e..2e63ff2157286 100644 --- a/compiler/rustc_target/src/spec/targets/x86_64_unknown_linux_none.rs +++ b/compiler/rustc_target/src/spec/targets/x86_64_unknown_linux_none.rs @@ -1,4 +1,4 @@ -use crate::spec::{Cc, LinkerFlavor, Lld, StackProbeType, Target, base}; +use crate::spec::{Cc, LinkerFlavor, Lld, PanicStrategy, StackProbeType, Target, base}; pub(crate) fn target() -> Target { let mut base = base::linux::opts(); @@ -7,6 +7,7 @@ pub(crate) fn target() -> Target { base.stack_probes = StackProbeType::Inline; base.linker_flavor = LinkerFlavor::Gnu(Cc::No, Lld::Yes); base.linker = Some("rust-lld".into()); + base.panic_strategy = PanicStrategy::Abort; Target { llvm_target: "x86_64-unknown-linux-none".into(), @@ -14,7 +15,7 @@ pub(crate) fn target() -> Target { description: None, tier: None, host_tools: None, - std: Some(true), + std: Some(false), }, pointer_width: 64, data_layout: diff --git a/src/doc/rustc/src/platform-support/x86_64-unknown-linux-none.md b/src/doc/rustc/src/platform-support/x86_64-unknown-linux-none.md index 5608b5cb77811..965d6aea93189 100644 --- a/src/doc/rustc/src/platform-support/x86_64-unknown-linux-none.md +++ b/src/doc/rustc/src/platform-support/x86_64-unknown-linux-none.md @@ -14,6 +14,11 @@ This target is cross compiled and can be built from any host. This target has no support for host tools, std, or alloc. +One of the primary motivations of the target is to write a dynamic linker and libc in Rust. +For that, the target defaults to position-independent code and position-independent executables (PIE) by default. +PIE binaries need relocation at runtime. This is usually done by the dynamic linker or libc. +You can use `-Crelocation-model=static` to create a position-dependent binary that does not need relocation at runtime. + ## Building the target The target can be built by enabling it for a `rustc` build: