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authorJosh Triplett <josh@joshtriplett.org>2021-09-19 12:05:58 -0700
committerMike Leany <55358344+mikeleany@users.noreply.github.com>2021-10-13 08:14:09 -0600
commita23ee64c2c292f30fa64b258042e256bca0f35a9 (patch)
tree03430927bf276a6aad3eff1ddbaddeec46d2f3ec
parent5ba3a651f982fd716f5993b56961d2c3a535b7d8 (diff)
downloadrust-a23ee64c2c292f30fa64b258042e256bca0f35a9.tar.gz
rust-a23ee64c2c292f30fa64b258042e256bca0f35a9.zip
Rename x86_64-unknown-none-elf to x86_64-unknown-none
Most Rust freestanding/bare-metal targets use just `-unknown-none` here,
including aarch64-unknown-none, mipsel-unknown-none, and the BPF
targets. The *only* target using `-unknown-none-elf` is RISC-V.

The underlying toolchain doesn't care; LLVM accepts both `x86_64-unknown-none`
and `x86_64-unknown-none-elf`.

In addition, there's a long history of embedded x86 targets with varying
definitions for the `elf` suffix; on some of those embedded targets,
`elf` implied the inclusion of a C library based on newlib or similar.
Using `x86_64-unknown-none` avoids any potential ambiguity there.

(Work on this target sponsored by Profian.)
-rw-r--r--compiler/rustc_target/src/spec/mod.rs2
-rw-r--r--compiler/rustc_target/src/spec/x86_64_unknown_none.rs (renamed from compiler/rustc_target/src/spec/x86_64_unknown_none_elf.rs)0
-rw-r--r--src/doc/rustc/src/platform-support.md2
3 files changed, 2 insertions, 2 deletions
diff --git a/compiler/rustc_target/src/spec/mod.rs b/compiler/rustc_target/src/spec/mod.rs
index 4b357b3cca1..5bc6d1918dd 100644
--- a/compiler/rustc_target/src/spec/mod.rs
+++ b/compiler/rustc_target/src/spec/mod.rs
@@ -955,7 +955,7 @@ supported_targets! {
 
     ("armv7-unknown-linux-uclibceabihf", armv7_unknown_linux_uclibceabihf),
 
-    ("x86_64-unknown-none-elf", x86_64_unknown_none_elf),
+    ("x86_64-unknown-none", x86_64_unknown_none),
 }
 
 /// Warnings encountered when parsing the target `json`.
diff --git a/compiler/rustc_target/src/spec/x86_64_unknown_none_elf.rs b/compiler/rustc_target/src/spec/x86_64_unknown_none.rs
index 58a83e75e41..58a83e75e41 100644
--- a/compiler/rustc_target/src/spec/x86_64_unknown_none_elf.rs
+++ b/compiler/rustc_target/src/spec/x86_64_unknown_none.rs
diff --git a/src/doc/rustc/src/platform-support.md b/src/doc/rustc/src/platform-support.md
index 62084d2a9db..0f2072bd521 100644
--- a/src/doc/rustc/src/platform-support.md
+++ b/src/doc/rustc/src/platform-support.md
@@ -285,7 +285,7 @@ target | std | host | notes
 `x86_64-unknown-haiku` | ✓ | ✓ | 64-bit Haiku
 `x86_64-unknown-hermit` | ? |  |
 `x86_64-unknown-l4re-uclibc` | ? |  |
-`x86_64-unknown-none-elf` | * |  | Bare x86_64, softfloat
+`x86_64-unknown-none` | * |  | Freestanding/bare-metal x86_64, softfloat
 `x86_64-unknown-none-hermitkernel` | ? |  | HermitCore kernel
 `x86_64-unknown-none-linuxkernel` | * |  | Linux kernel modules
 `x86_64-unknown-openbsd` | ✓ | ✓ | 64-bit OpenBSD