From 5b83c2ff5da15451cb566e1837253d0f60543dd7 Mon Sep 17 00:00:00 2001
From: Alfred Persson Forsberg <cat@catcream.org>
Date: Thu, 19 Oct 2023 20:55:40 +0200
Subject: [PATCH] config.sub: add LLVM-libc support

* config.sub (*-linux-llvm): Recognize.
* doc/config.sub.1: Regenerate.
* testsuite/config-sub.data: Add x86_64-linux-llvm.

Signed-off-by: Alfred Persson Forsberg <cat@catcream.org>
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
---
 config.sub                | 12 +++++++-----
 doc/config.sub.1          |  2 +-
 testsuite/config-sub.data |  1 +
 3 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/config.sub b/config.sub
index defe52c..d036c7f 100755
--- a/config.sub
+++ b/config.sub
@@ -4,7 +4,7 @@
 
 # shellcheck disable=SC2006,SC2268 # see below for rationale
 
-timestamp='2023-09-19'
+timestamp='2023-10-19'
 
 # 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
@@ -1721,7 +1721,7 @@ fi
 
 case $os in
 	# Sometimes we do "kernel-libc", so those need to count as OSes.
-	musl* | newlib* | relibc* | uclibc*)
+	llvm* | musl* | newlib* | relibc* | uclibc*)
 		;;
 	# Likewise for "kernel-abi"
 	eabi* | gnueabi*)
@@ -1818,8 +1818,9 @@ esac
 # As a final step for OS-related things, validate the OS-kernel combination
 # (given a valid OS), if there is a kernel.
 case $kernel-$os-$obj in
-	linux-gnu*- | linux-dietlibc*- | linux-android*- | linux-newlib*- \
-		   | linux-musl*- | linux-relibc*- | linux-uclibc*- | linux-mlibc*- )
+	linux-gnu*- | linux-android*- | linux-dietlibc*- | linux-llvm*- \
+		    | linux-mlibc*- | linux-musl*- | linux-newlib*- \
+		    | linux-relibc*- | linux-uclibc*- )
 		;;
 	uclinux-uclibc*- )
 		;;
@@ -1827,7 +1828,8 @@ case $kernel-$os-$obj in
 		;;
 	windows*-msvc*-)
 		;;
-	-dietlibc*- | -newlib*- | -musl*- | -relibc*- | -uclibc*- | -mlibc*- )
+	-dietlibc*- | -llvm*- | -mlibc*- | -musl*- | -newlib*- | -relibc*- \
+		    | -uclibc*- )
 		# These are just libc implementations, not actual OSes, and thus
 		# require a kernel.
 		echo "Invalid configuration '$1': libc '$os' needs explicit kernel." 1>&2
diff --git a/doc/config.sub.1 b/doc/config.sub.1
index 01102c2..4badf8b 100644
--- a/doc/config.sub.1
+++ b/doc/config.sub.1
@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.48.5.
-.TH CONFIG.SUB "1" "September 2023" "GNU config.sub (2023-09-19)" "User Commands"
+.TH CONFIG.SUB "1" "October 2023" "GNU config.sub (2023-10-19)" "User Commands"
 .SH NAME
 config.sub \- validate and canonicalize a configuration triplet
 .SH SYNOPSIS
diff --git a/testsuite/config-sub.data b/testsuite/config-sub.data
index f36bea2..ddb6168 100644
--- a/testsuite/config-sub.data
+++ b/testsuite/config-sub.data
@@ -881,6 +881,7 @@ x86_64-ericsson-dicos				x86_64-ericsson-dicos
 x86_64-fuchsia					x86_64-pc-fuchsia
 x86_64-genode					x86_64-pc-genode
 x86_64-glidix					x86_64-pc-glidix
+x86_64-linux-llvm				x86_64-pc-linux-llvm
 x86_64-linux-mlibc				x86_64-pc-linux-mlibc
 x86_64-linux-relibc				x86_64-pc-linux-relibc
 x86_64-managarm					x86_64-pc-managarm-mlibc