Naming convention for Rust target platforms

[Karel Gardas]

On 1/30/24 18:13, Frank Kühndel wrote:
> Which name Rust accepts instead of "armv7a-rtems6-eabihf" depends on the 
> naming convention of the Rust community:
>      https://docs.rust-embedded.org/embedonomicon/custom-target.html
> According to this file, the part `eabi` is for bare metal. Would this be 
> correct when it is based on RTEMS? For example, a Linux target would be 
> "x86_64-unknown-linux-gnu" where `gnu` means started by 'glibc'.

This is not completely fair to Jan as the x86_64 example is quite the 
exception instead of a common norm in rust platforms names. But you 
started with Linux so let's continue with Linux -- see the listing below.

Also IMHO this convention is not about rust per se, but IMHO about LLVM 
way of doing things. GCC does that differently. So no C vs Rust, but GCC 
vs. LLVM. Once Rust in GCC happen it'll be done in GCC more RTEMS used 
way probably...

So for Rust/LLVM I think Jan's proposal is about right except that I 
would strip '6' from rtems6. Neither OS (Linux, FreeBSD, NetBSD, 
Windows, OpenBSD, VxWorks, etc) uses any version notion in the OS name 
anyway... And also would strip 'a' from arm7a. We do not need to mention 
'a' here explicitly since for 'm' we do have whole family of 'thumb*' 
platform names... E.g. VxWorks in this particular case (ARMv7-A) uses: 
armv7-wrs-vxworks-eabihf


Cheers,
Karel



$ rustc --print target-list|grep linux
aarch64-linux-android
aarch64-unknown-linux-gnu
aarch64-unknown-linux-gnu_ilp32
aarch64-unknown-linux-musl
aarch64-unknown-linux-ohos
aarch64_be-unknown-linux-gnu
aarch64_be-unknown-linux-gnu_ilp32
arm-linux-androideabi
arm-unknown-linux-gnueabi
arm-unknown-linux-gnueabihf
arm-unknown-linux-musleabi
arm-unknown-linux-musleabihf
armeb-unknown-linux-gnueabi
armv4t-unknown-linux-gnueabi
armv5te-unknown-linux-gnueabi
armv5te-unknown-linux-musleabi
armv5te-unknown-linux-uclibceabi
armv7-linux-androideabi
armv7-unknown-linux-gnueabi
armv7-unknown-linux-gnueabihf
armv7-unknown-linux-musleabi
armv7-unknown-linux-musleabihf
armv7-unknown-linux-ohos
armv7-unknown-linux-uclibceabi
armv7-unknown-linux-uclibceabihf
csky-unknown-linux-gnuabiv2
hexagon-unknown-linux-musl
i586-unknown-linux-gnu
i586-unknown-linux-musl
i686-linux-android
i686-unknown-linux-gnu
i686-unknown-linux-musl
loongarch64-unknown-linux-gnu
m68k-unknown-linux-gnu
mips-unknown-linux-gnu
mips-unknown-linux-musl
mips-unknown-linux-uclibc
mips64-openwrt-linux-musl
mips64-unknown-linux-gnuabi64
mips64-unknown-linux-muslabi64
mips64el-unknown-linux-gnuabi64
mips64el-unknown-linux-muslabi64
mipsel-unknown-linux-gnu
mipsel-unknown-linux-musl
mipsel-unknown-linux-uclibc
mipsisa32r6-unknown-linux-gnu
mipsisa32r6el-unknown-linux-gnu
mipsisa64r6-unknown-linux-gnuabi64
mipsisa64r6el-unknown-linux-gnuabi64
powerpc-unknown-linux-gnu
powerpc-unknown-linux-gnuspe
powerpc-unknown-linux-musl
powerpc64-unknown-linux-gnu
powerpc64-unknown-linux-musl
powerpc64le-unknown-linux-gnu
powerpc64le-unknown-linux-musl
riscv32gc-unknown-linux-gnu
riscv32gc-unknown-linux-musl
riscv64-linux-android
riscv64gc-unknown-linux-gnu
riscv64gc-unknown-linux-musl
s390x-unknown-linux-gnu
s390x-unknown-linux-musl
sparc-unknown-linux-gnu
sparc64-unknown-linux-gnu
thumbv7neon-linux-androideabi
thumbv7neon-unknown-linux-gnueabihf
thumbv7neon-unknown-linux-musleabihf
x86_64-linux-android
x86_64-unikraft-linux-musl
x86_64-unknown-linux-gnu
x86_64-unknown-linux-gnux32
x86_64-unknown-linux-musl
x86_64-unknown-linux-ohos