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config.sub: Accept $cpu-$vendor-none-{coff,elf}

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These are not real OSes, they are object file formats. There is a
longstanding tradition of using them for embedded/freestanding
programming, so it makes sense to parse them with `kernel=none`.

(I have a WIP future patch that systematizes parsing these non-OSes a
bit more. That also opens the door to parsing a 5th component as LLVM
can do.)

This change unblocks an issue we've been having with Nixpkgs (see
https://github.com/NixOS/nixpkgs/issues/165836 for the longer version).

* config.sub (none-coff*, none-elf*): Recognize.
* testsuite/config-sub.data (arm-unknown-none-coff,
arm-unknown-none-elf, riscv64-company-none-elf): New tests.
* doc/config.sub.1: Regenerate.
This commit is contained in:
John Ericson 2023-07-04 18:52:51 -04:00 committed by Dmitry V. Levin
parent 91f6a7f616
commit 998ba14143
3 changed files with 9 additions and 2 deletions
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6
config.sub vendored
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@ -4,7 +4,7 @@
# shellcheck disable=SC2006,SC2268 # see below for rationale
timestamp='2023-06-26'
timestamp='2023-07-04'
# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
@ -1816,6 +1816,10 @@ case $kernel-$os in
;;
*-eabi* | *-gnueabi*)
;;
none-coff* | none-elf*)
# None (no kernel, i.e. freestanding / bare metal),
# can be paired with an output format "OS"
;;
-*)
# Blank kernel with real OS is always fine.
;;

2
doc/config.sub.1
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@ -1,5 +1,5 @@
.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.48.5.
.TH CONFIG.SUB "1" "July 2023" "GNU config.sub (2023-06-26)" "User Commands"
.TH CONFIG.SUB "1" "July 2023" "GNU config.sub (2023-07-04)" "User Commands"
.SH NAME
config.sub \- validate and canonicalize a configuration triplet
.SH SYNOPSIS

3
testsuite/config-sub.data
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@ -91,7 +91,9 @@ arm-sysgo-pikeos arm-sysgo-eabi
arm-tirtos arm-unknown-tirtos
arm-uclinux-uclibcgnueabi arm-unknown-uclinux-uclibcgnueabi
arm-unknown-netbsdelf7.0 arm-unknown-netbsdelf7.0
arm-unknown-none-coff arm-unknown-none-coff
arm-unknown-none-eabi arm-unknown-none-eabi
arm-unknown-none-elf arm-unknown-none-elf
arm-unknown-riscos arm-unknown-riscos
arm-zephyr arm-unknown-zephyr
arm64-apple-darwin20.0.0 aarch64-apple-darwin20.0.0
@ -639,6 +641,7 @@ riscv32be-elf riscv32be-unknown-elf
riscv32be-linux riscv32be-unknown-linux-gnu
riscv64 riscv64-unknown-none
riscv64-company-elf riscv64-company-elf
riscv64-company-none-elf riscv64-company-none-elf
riscv64-elf riscv64-unknown-elf
riscv64-hcos riscv64-unknown-hcos
riscv64-linux riscv64-unknown-linux-gnu