config.sub: add managarm-{mlibc,kernel} targets

To achieve this, the `kernel' pseudo-OS value was added, intended to
identify targets requiring a kernel-specific compiler and base system.

Signed-off-by: Arsen Arsenović <arsen@aarsen.me>

* config.sub (managarm-*): Recognize.
(mlibc*): Likewise libc.
(timestamp): Update.
* doc/config.sub.1: Regenerate.
* testsuite/config-sub.data (aarch64-managarm, aarch64-managarm-kernel,
aarch64-managarm-mlibc, riscv-managarm, riscv-managarm-kernel,
riscv-managarm-mlibc, x86_64-managarm, x86_64-managarm-kernel,
x86_64-managarm-mlibc): New tests.

Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>

config.sub

@@ -4,7 +4,7 @@
 
 # shellcheck disable=SC2006,SC2268 # see below for rationale
 
-timestamp='2022-08-01'
+timestamp='2022-09-17'
 
 # 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
@@ -145,7 +145,7 @@ case $1 in
 			nto-qnx* | linux-* | uclinux-uclibc* \
 			| uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* \
 			| netbsd*-eabi* | kopensolaris*-gnu* | cloudabi*-eabi* \
-			| storm-chaos* | os2-emx* | rtmk-nova*)
+			| storm-chaos* | os2-emx* | rtmk-nova* | managarm-*)
 				basic_machine=$field1
 				basic_os=$maybe_os
 				;;
@@ -1341,6 +1341,10 @@ EOF
 		kernel=linux
 		os=`echo "$basic_os" | sed -e 's|linux|gnu|'`
 		;;
+	managarm*)
+		kernel=managarm
+		os=`echo "$basic_os" | sed -e 's|managarm|mlibc|'`
+		;;
 	*)
 		kernel=
 		os=$basic_os
@@ -1754,7 +1758,7 @@ case $os in
 	     | onefs* | tirtos* | phoenix* | fuchsia* | redox* | bme* \
 	     | midnightbsd* | amdhsa* | unleashed* | emscripten* | wasi* \
 	     | nsk* | powerunix* | genode* | zvmoe* | qnx* | emx* | zephyr* \
-	     | fiwix* )
+	     | fiwix* | mlibc* )
 		;;
 	# This one is extra strict with allowed versions
 	sco3.2v2 | sco3.2v[4-9]* | sco5v6*)
@@ -1762,6 +1766,9 @@ case $os in
 		;;
 	none)
 		;;
+	kernel* )
+		# Restricted further below
+		;;
 	*)
 		echo Invalid configuration \`"$1"\': OS \`"$os"\' not recognized 1>&2
 		exit 1
@@ -1776,12 +1783,22 @@ case $kernel-$os in
 		;;
 	uclinux-uclibc* )
 		;;
-	-dietlibc* | -newlib* | -musl* | -relibc* | -uclibc* )
+	managarm-mlibc* | managarm-kernel* )
+		;;
+	-dietlibc* | -newlib* | -musl* | -relibc* | -uclibc* | -mlibc* )
 		# These are just libc implementations, not actual OSes, and thus
 		# require a kernel.
 		echo "Invalid configuration \`$1': libc \`$os' needs explicit kernel." 1>&2
 		exit 1
 		;;
+	-kernel* )
+		echo "Invalid configuration \`$1': \`$os' needs explicit kernel." 1>&2
+		exit 1
+		;;
+	*-kernel* )
+		echo "Invalid configuration \`$1': \`$kernel' does not support \`$os'." 1>&2
+		exit 1
+		;;
 	kfreebsd*-gnu* | kopensolaris*-gnu*)
 		;;
 	vxworks-simlinux | vxworks-simwindows | vxworks-spe)

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" "August 2022" "GNU config.sub (2022-08-01)" "User Commands"
+.TH CONFIG.SUB "1" "September 2022" "GNU config.sub (2022-09-17)" "User Commands"
 .SH NAME
 config.sub \- validate and canonicalize a configuration triplet
 .SH SYNOPSIS

testsuite/config-sub.data

@@ -16,6 +16,9 @@ aarch64-bme					aarch64-unknown-bme
 aarch64-elf					aarch64-unknown-elf
 aarch64-genode					aarch64-unknown-genode
 aarch64-linux					aarch64-unknown-linux-gnu
+aarch64-managarm				aarch64-unknown-managarm-mlibc
+aarch64-managarm-kernel				aarch64-unknown-managarm-kernel
+aarch64-managarm-mlibc				aarch64-unknown-managarm-mlibc
 aarch64-unknown-elf				aarch64-unknown-elf
 aarch64-unknown-linux				aarch64-unknown-linux-gnu
 aarch64-wrs-vxworks				aarch64-wrs-vxworks
@@ -615,6 +618,9 @@ riscv-company-elf				riscv-company-elf
 riscv-company-hcos				riscv-company-hcos
 riscv-elf					riscv-unknown-elf
 riscv-linux					riscv-unknown-linux-gnu
+riscv-managarm					riscv-unknown-managarm-mlibc
+riscv-managarm-kernel				riscv-unknown-managarm-kernel
+riscv-managarm-mlibc				riscv-unknown-managarm-mlibc
 riscv-twizzler					riscv-unknown-twizzler
 riscv-zephyr					riscv-unknown-zephyr
 riscv32						riscv32-unknown-none
@@ -842,6 +848,9 @@ x86_64-fuchsia					x86_64-pc-fuchsia
 x86_64-genode					x86_64-pc-genode
 x86_64-glidix					x86_64-pc-glidix
 x86_64-linux-relibc				x86_64-pc-linux-relibc
+x86_64-managarm					x86_64-pc-managarm-mlibc
+x86_64-managarm-kernel				x86_64-pc-managarm-kernel
+x86_64-managarm-mlibc				x86_64-pc-managarm-mlibc
 x86_64-nto					x86_64-pc-nto-qnx
 x86_64-os108					x86_64-pc-os108
 x86_64-pc-ptx					x86_64-pc-ptx