[PATCH v2 2/8] MAINTAINERS: scripts to generate the file from yaml data

[Richard Earnshaw via Sourceware Forge]

From: Richard Earnshaw <rearn...@arm.com>

Convert the existing MAINTAINERS data to YAML and add a script to
rebuild the MAINTAINERS file from it.  We'll add the regenerated file
shortly.

ChangeLog:

        * MAINTAINERS.yml: New file.

contrib/ChangeLog:

        * gen-MAINTAINERS.py: New file.
        * maintainer_utils.py: New file.
---
 MAINTAINERS.yml             | 6131 +++++++++++++++++++++++++++++++++++
 contrib/gen-MAINTAINERS.py  |  268 ++
 contrib/maintainer_utils.py |  276 ++
 3 files changed, 6675 insertions(+)
 create mode 100644 MAINTAINERS.yml
 create mode 100755 contrib/gen-MAINTAINERS.py
 create mode 100755 contrib/maintainer_utils.py

diff --git a/MAINTAINERS.yml b/MAINTAINERS.yml
new file mode 100644
index 000000000000..95dedfd3c7ae
--- /dev/null
+++ b/MAINTAINERS.yml
@@ -0,0 +1,6131 @@
+users:
+- sn: Abson
+  cn: Spencer Abson
+  email:
+  - spencer.ab...@student.manchester.ac.uk
+  - sab...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: sabson
+- sn: Adams
+  cn: Mark G. Adams
+  email:
+  - mark.g.ad...@sympatico.ca
+  - mgad...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: mgadams
+  inactive: true
+- sn: Agarwal
+  cn: Ajit Kumar Agarwal
+  email:
+  - aagar...@linux.ibm.com
+  - aaga...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: aagarwa
+- sn: Alves
+  cn: Pedro Alves
+  email:
+  - pal...@redhat.com
+  - pal...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: palves
+  inactive: true
+- sn: Anglin
+  cn: John David Anglin
+  email:
+  - dave.ang...@bell.net
+  - dang...@gcc.gnu.org
+  roles:
+  - Maintainer: hppa port
+  - Maintainer: hpux
+  - WriteAfter
+  account: danglin
+- sn: Anlauf
+  cn: Harald Anlauf
+  email:
+  - anl...@gmx.de
+  - anl...@gcc.gnu.org
+  roles:
+  - Reviewer: Fortran
+  - WriteAfter
+  account: anlauf
+- sn: AR
+  cn: Soumya AR
+  email:
+  - soum...@nvidia.com
+  - soum...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  - DCO: soum...@nvidia.com
+  account: soumyaa
+- sn: Arras
+  cn: Paul-Antoine Arras
+  email:
+  - par...@baylibre.com
+  - par...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: parras
+- sn: Arsenović
+  cn: Arsen Arsenović
+  email:
+  - aarseno...@baylibre.com
+  - ar...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: arsen
+- sn: Ashok
+  cn: Raksit Ashok
+  email:
+  - rak...@google.com
+  - rak...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: raksit
+  inactive: true
+- sn: Augustine
+  cn: Sterling Augustine
+  email:
+  - augustine.sterl...@gmail.com
+  - sterl...@gcc.gnu.org
+  roles:
+  - Maintainer: xtensa port
+  - WriteAfter
+  account: sterling
+- sn: Austern
+  cn: Matt Austern
+  email:
+  - aust...@google.com
+  - aust...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: austern
+  inactive: true
+- sn: Ayers
+  cn: David Ayers
+  email:
+  - ay...@fsfe.org
+  - ay...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: ayers
+  inactive: true
+- sn: Bahuguna
+  cn: Prakhar Bahuguna
+  email:
+  - prakhar.bahug...@arm.com
+  - prak...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: prakhar
+  inactive: true
+- sn: Bajo
+  cn: Giovanni Bajo
+  email:
+  - giovannib...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: giovannibajo
+  inactive: true
+- sn: Baldwin
+  cn: Simon Baldwin
+  email:
+  - sim...@google.com
+  - sim...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: simonb
+  inactive: true
+- sn: Ball
+  cn: Richard Ball
+  email:
+  - richard.b...@arm.com
+  - ricba...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: ricbal02
+- sn: Bambrough
+  cn: Scott Bambrough
+  email:
+  - sco...@netwinder.org
+  - sco...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: scottb
+  inactive: true
+- sn: Bangerth
+  cn: Wolfgang Bangerth
+  email:
+  - bange...@dealii.org
+  - bange...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: bangerth
+  inactive: true
+- sn: Bantaloukas
+  cn: Claudio Bantaloukas
+  email:
+  - claudio.bantalou...@arm.com
+  - r...@gcc.gnu.org
+  roles:
+  - Maintainer: forge integration
+  - WriteAfter
+  account: rdfm
+- sn: Barany
+  cn: Gergö Barany
+  email:
+  - ge...@codesourcery.com
+  - ge...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: gergo
+  inactive: true
+- sn: Barboza
+  cn: Daniel Barboza
+  email:
+  - daniel.barb...@oss.qualcomm.com
+  - dbarb...@gcc.gnu.org
+  - dbarb...@qti.qualcomm.com
+  - dbarb...@ventanamicro.com
+  roles:
+  - WriteAfter
+  - DCO: dbarb...@qti.qualcomm.com
+  - DCO: dbarb...@ventanamicro.com
+  account: dbarboza
+  aliases:
+  - Daniel Henrique Barboza
+- sn: Bauermann
+  cn: Thiago Jung Bauermann
+  email:
+  - thiago.bauerm...@linaro.org
+  - bauerm...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: bauermann
+- sn: Baylis
+  cn: Charles Baylis
+  email:
+  - charles.bay...@linaro.org
+  - cbay...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: cbaylis
+  inactive: true
+- sn: Bazley
+  cn: Christopher Bazley
+  email:
+  - chris.baz...@arm.com
+  - chrba...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: chrbaz01
+  aliases:
+  - Chris Bazley
+- sn: Belagod
+  cn: Tejas Belagod
+  email:
+  - tejas.bela...@arm.com
+  - bela...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: belagod
+- sn: Belevantsev
+  cn: Andrey Belevantsev
+  email:
+  - a...@ispras.ru
+  - a...@gcc.gnu.org
+  roles:
+  - Reviewer: selective scheduling
+  - WriteAfter
+  account: abel
+  inactive: true
+- sn: Beliveau
+  cn: Matthew Beliveau
+  email:
+  - mbeli...@redhat.com
+  - mbeli...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: mbelivea
+  inactive: true
+- sn: Belyshev
+  cn: Serge Belyshev
+  email:
+  - belys...@depni.sinp.msu.ru
+  - s...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: ssb
+  inactive: true
+- sn: Beniston
+  cn: Jon Beniston
+  email:
+  - j...@beniston.com
+  - jbenis...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: jbeniston
+  inactive: true
+- sn: Bennett
+  cn: Andrew Bennett
+  email:
+  - andrew.benn...@imgtec.com
+  - abenn...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: abennett
+- sn: Benson
+  cn: Andrew Benson
+  email:
+  - abenso...@gmail.com
+  - abenso...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: abensonca
+  inactive: true
+- sn: Bergner
+  cn: Peter Bergner
+  email:
+  - berg...@tenstorrent.com
+  - berg...@gcc.gnu.org
+  roles:
+  - Reviewer: register allocation
+  - WriteAfter
+  - DCO: berg...@tenstorrent.com
+  account: bergner
+- sn: Berlin
+  cn: Daniel Berlin
+  email:
+  - dber...@dberlin.org
+  - dber...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: dberlin
+  inactive: true
+- sn: Bernardi
+  cn: Pat Bernardi
+  email:
+  - berna...@adacore.com
+  - pberna...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: pbernardi
+  inactive: true
+- sn: Beulich
+  cn: Jan Beulich
+  email:
+  - jbeul...@suse.com
+  - jbeul...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: jbeulich
+- sn: Bhagat
+  cn: Indu Bhagat
+  email:
+  - indu.bha...@oracle.com
+  - ibha...@gcc.gnu.org
+  roles:
+  - Reviewer: CTF, BTF
+  - WriteAfter
+  account: ibhagat
+- sn: Biener
+  cn: Richard Biener
+  email:
+  - rguent...@suse.de
+  - rgue...@gcc.gnu.org
+  roles:
+  - Global
+  - Maintainer: middle-end
+  - Maintainer: vectorizer (+ tree-if-conv)
+  - Reviewer: LTO
+  - WriteAfter
+  account: rguenth
+- sn: Billinghurst
+  cn: David Billinghurst
+  email:
+  - david.billinghu...@riotinto.com
+  - billi...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: billingd
+  inactive: true
+- sn: Bily
+  cn: Tomas Bily
+  email:
+  - tb...@suse.cz
+  - to...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: tomby
+  inactive: true
+- sn: Biveinis
+  cn: Laurynas Biveinis
+  email:
+  - laurynas.bivei...@gmail.com
+  - lau...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: lauras
+  inactive: true
+- sn: Bizjak
+  cn: Uros Bizjak
+  email:
+  - ubiz...@gmail.com
+  - u...@gcc.gnu.org
+  roles:
+  - Maintainer: i386 port
+  - WriteAfter
+  account: uros
+- sn: Blake
+  cn: Eric Blake
+  email:
+  - er...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: ericb
+  inactive: true
+- sn: Blomqvist
+  cn: Janne Blomqvist
+  email:
+  - j...@gcc.gnu.org
+  roles:
+  - Reviewer: Fortran
+  - WriteAfter
+  account: jb
+  inactive: true
+- sn: Blundell
+  cn: Phil Blundell
+  email:
+  - p...@futuretv.com
+  - p...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: pb
+  inactive: true
+- sn: Boehm
+  cn: Hans Boehm
+  email:
+  - hbo...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: hboehm
+  inactive: true
+- sn: Boessenkool
+  cn: Segher Boessenkool
+  email:
+  - seg...@kernel.crashing.org
+  - seg...@gcc.gnu.org
+  roles:
+  - Maintainer: rs6000/powerpc port
+  - Maintainer: instruction combiner
+  - WriteAfter
+  account: segher
+- sn: Boger
+  cn: Lynn Boger
+  email:
+  - labo...@linux.vnet.ibm.com
+  - bo...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: boger
+  inactive: true
+- sn: Bolton
+  cn: Ian Bolton
+  email:
+  - ian.bol...@arm.com
+  - ibol...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: ibolton
+  inactive: true
+- sn: Bona
+  cn: Andrea Bona
+  email:
+  - andrea.b...@st.com
+  - andre...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: andreabo
+  inactive: true
+- sn: Bonzini
+  cn: Paolo Bonzini
+  email:
+  - bonz...@gnu.org
+  - bonz...@gcc.gnu.org
+  roles:
+  - Maintainer: build machinery (*.in)
+  - Reviewer: dataflow
+  - WriteAfter
+  account: bonzini
+- sn: Booth
+  cn: Neil Booth
+  email:
+  - n...@daikokuya.co.uk
+  - n...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: neil
+  inactive: true
+- sn: Bosscher
+  cn: Steven Bosscher
+  email:
+  - ste...@gcc.gnu.org
+  roles:
+  - Reviewer: RTL optimizers
+  - WriteAfter
+  account: steven
+  inactive: true
+- sn: Botcazou
+  cn: Eric Botcazou
+  email:
+  - ebotca...@libertysurf.fr
+  - ebotca...@gcc.gnu.org
+  - ebotca...@adacore.com
+  roles:
+  - Maintainer: sparc port
+  - Maintainer: visium port
+  - Maintainer: Ada front end
+  - Maintainer: RTL optimizers
+  - WriteAfter
+  account: ebotcazou
+- sn: Bothner
+  cn: Per Bothner
+  email:
+  - p...@bothner.com
+  - both...@gcc.gnu.org
+  roles:
+  - Maintainer: libcpp
+  - WriteAfter
+  account: bothner
+  inactive: true
+- sn: Boucher
+  cn: Antoni Boucher
+  email:
+  - boua...@zoho.com
+  - ant...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: antoyo
+- sn: Bourdeauducq
+  cn: Sebastien Bourdeauducq
+  email:
+  - sebast...@milkymist.org
+  - leker...@gcc.gnu.org
+  roles:
+  - Maintainer: lm32 port
+  - WriteAfter
+  account: lekernel
+  inactive: true
+- sn: Bowdidge
+  cn: Robert Bowdidge
+  email:
+  - bowdi...@apple.com
+  - bowdi...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: bowdidge
+  inactive: true
+- sn: Bowman
+  cn: James Bowman
+  email:
+  - james.bow...@ftdichip.com
+  - jamesbow...@gcc.gnu.org
+  roles:
+  - Maintainer: ft32 port
+  - WriteAfter
+  account: jamesbowman
+  inactive: true
+- sn: Brobecker
+  cn: Joel Brobecker
+  email:
+  - brobec...@gnat.com
+  - brobe...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: brobecke
+  inactive: true
+- sn: Brolley
+  cn: Dave Brolley
+  email:
+  - brol...@redhat.com
+  - brol...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: brolley
+  inactive: true
+- sn: Brown
+  cn: Julian Brown
+  email:
+  - jul...@codesourcery.com
+  - ju...@gcc.gnu.org
+  roles:
+  - Maintainer: amdgcn port
+  - WriteAfter
+  account: jules
+- sn: Bruel
+  cn: Christian Bruel
+  email:
+  - christian.br...@st.com
+  - ch...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: chrbr
+  inactive: true
+- sn: Buclaw
+  cn: Iain Buclaw
+  email:
+  - ibuc...@gdcproject.org
+  - ibuc...@gcc.gnu.org
+  roles:
+  - Maintainer: D front end
+  - Maintainer: libphobos
+  - WriteAfter
+  account: ibuclaw
+- sn: Buettner
+  cn: Kevin Buettner
+  email:
+  - kev...@redhat.com
+  - kev...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: kevinb
+- sn: Burgess
+  cn: Andrew Burgess
+  email:
+  - aburg...@redhat.com
+  - aburg...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: aburgess
+- sn: Burnus
+  cn: Tobias Burnus
+  email:
+  - tbur...@baylibre.com
+  - bur...@gcc.gnu.org
+  roles:
+  - Maintainer: libgomp
+  - Maintainer: libquadmath
+  - Maintainer: OpenACC
+  - Maintainer: OpenMP
+  - Reviewer: Fortran
+  - WriteAfter
+  account: burnus
+- sn: Butcher
+  cn: Adam Butcher
+  email:
+  - a...@jessamine.co.uk
+  - abutc...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: abutcher
+  inactive: true
+- sn: Cagney
+  cn: Andrew Cagney
+  email:
+  - cag...@gnu.org
+  - cag...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: cagney
+  inactive: true
+- sn: Carlini
+  cn: Paolo Carlini
+  email:
+  - pcarl...@gmail.com
+  - pa...@gcc.gnu.org
+  roles:
+  - Maintainer: c++ runtime libs
+  - WriteAfter
+  account: paolo
+  inactive: true
+- sn: Carlotti
+  cn: Alice Carlotti
+  email:
+  - alice.carlo...@arm.com
+  - acarlo...@gcc.gnu.org
+  roles:
+  - Reviewer: aarch64 port
+  - WriteAfter
+  account: acarlotti
+- sn: Carrera
+  cn: Daniel Carrera
+  email:
+  - dcarr...@gmail.com
+  - dcarr...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: dcarrera
+  inactive: true
+- sn: Carrez
+  cn: Stephane Carrez
+  email:
+  - stcar...@nerim.fr
+  - cice...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: ciceron
+  inactive: true
+- sn: Charette
+  cn: Gabriel Charette
+  email:
+  - gch...@google.com
+  - gch...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: gchare
+  inactive: true
+- sn: Charlet
+  cn: Arnaud Charlet
+  email:
+  - char...@adacore.com
+  - char...@gcc.gnu.org
+  roles:
+  - Maintainer: Ada front end
+  - WriteAfter
+  account: charlet
+- sn: Chavva
+  cn: Chandra Chavva
+  email:
+  - ccha...@redhat.com
+  - ccha...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: cchavva
+  inactive: true
+- sn: Chawla
+  cn: Dhruv Chawla
+  email:
+  - dhr...@nvidia.com
+  - dhr...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  - DCO: dhr...@nvidia.com
+  account: dhruvc
+- sn: Chen
+  cn: Dehao Chen
+  email:
+  - de...@google.com
+  - de...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: dehao
+  inactive: true
+- sn: Chen
+  cn: Zhongyao Chen
+  email:
+  - chenzhongyao....@gmail.com
+  - zhong...@gcc.gnu.org
+  - chen.zhong...@zte.com.cn
+  roles:
+  - WriteAfter
+  - DCO: chen.zhong...@zte.com.cn
+  - DCO: chenzhongyao....@gmail.com
+  account: zhongyao
+  aliases:
+  - zhongyao
+- sn: Chêne
+  cn: Fabien Chêne
+  email:
+  - fab...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: fabien
+  inactive: true
+- sn: Cheng
+  cn: Bin Cheng
+  email:
+  - bin.ch...@linux.alibaba.com
+  - am...@gcc.gnu.org
+  roles:
+  - Maintainer: loop ivopts
+  - Maintainer: loop optimizer
+  - WriteAfter
+  account: amker
+  inactive: true
+- sn: Cheng
+  cn: Kito Cheng
+  email:
+  - kito.ch...@gmail.com
+  - k...@gcc.gnu.org
+  - kito.ch...@sifive.com
+  roles:
+  - Maintainer: riscv port
+  - WriteAfter
+  account: kito
+- sn: Cheng
+  cn: Lulu Cheng
+  email:
+  - chengl...@loongson.cn
+  - chengl...@gcc.gnu.org
+  roles:
+  - Maintainer: LoongArch port
+  - WriteAfter
+  account: chenglulu
+  aliases:
+  - ChengLulu
+- sn: Chertykov
+  cn: Denis Chertykov
+  email:
+  - cherty...@gmail.com
+  - den...@gcc.gnu.org
+  roles:
+  - Maintainer: avr port
+  - WriteAfter
+  account: denisc
+- sn: Chiang
+  cn: Monk Chiang
+  email:
+  - monkchi...@gmail.com
+  - mo...@gcc.gnu.org
+  - monk.chi...@sifive.com
+  roles:
+  - WriteAfter
+  account: monkc
+- sn: Chigot
+  cn: Clément Chigot
+  email:
+  - chi...@adacore.com
+  - helf...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: helflym
+- sn: Chopra
+  cn: Harshit Chopra
+  email:
+  - hars...@google.com
+  - hars...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: harshit
+  inactive: true
+- sn: Christ
+  cn: Juergen Christ
+  email:
+  - jchr...@linux.ibm.com
+  - jchr...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  - DCO: jchr...@linux.ibm.com
+  account: jchrist
+- sn: Christina
+  cn: Tamar Christina
+  email:
+  - tamar.christ...@arm.com
+  - tnfch...@gcc.gnu.org
+  roles:
+  - Maintainer: aarch64 port
+  - Maintainer: vectorizer (+ tree-if-conv)
+  - WriteAfter
+  account: tnfchris
+- sn: Christopher
+  cn: Eric Christopher
+  email:
+  - echri...@gmail.com
+  - echri...@gcc.gnu.org
+  roles:
+  - WriteAfter
+  account: echristo
+  inactive: true
+- sn: Clarke
+  cn: Paul Clarke
+  email:
+  - p...@us.ibm.com
+  - p...@gcc.gnu.org
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+- name: sparc port
+  class: CPU
+  labels: []
+- name: static analyzer
+  class: Subsystem
+  labels: []
+- name: testsuite
+  class: Subsystem
+  labels: []
+- name: tree browser/unparser
+  class: Subsystem
+  labels: []
+- name: tree-ssa
+  class: Subsystem
+  labels: []
+- name: v850 port
+  class: CPU
+  labels: []
+- name: vax port
+  class: CPU
+  labels: []
+- name: vectorizer (+ tree-if-conv)
+  class: Subsystem
+  labels: []
+- name: visium port
+  class: CPU
+  labels: []
+- name: web pages
+  class: Subsystem
+  labels: []
+- name: wide-int
+  labels: []
+- name: x86-64 port
+  class: CPU
+  labels: []
+- name: xstormy16 port
+  class: CPU
+  labels: []
+- name: xtensa port
+  class: CPU
+  labels: []
diff --git a/contrib/gen-MAINTAINERS.py b/contrib/gen-MAINTAINERS.py
new file mode 100755
index 000000000000..2ffe998594ae
--- /dev/null
+++ b/contrib/gen-MAINTAINERS.py
@@ -0,0 +1,268 @@
+#!/usr/bin/env python3
+
+# Regenerate the MAINTAINERS file from the YAML data.
+
+# Copyright (C) 2026 Free Software Foundation, Inc.
+#
+# This file is part of GCC.
+#
+# GCC is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# GCC is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING.  If not, write to
+# the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+# Boston, MA 02110-1301, USA.
+
+
+import locale
+import sys
+
+from operator import itemgetter
+from optparse import OptionParser
+
+import unidecode
+
+import maintainer_utils as maintutils
+
+opts = None
+verbose = False
+active_only = False
+
+boilerplate = {
+    'intro': {
+        'preamble': """Note
+====
+
+This file is autogenerated.  DO NOT EDIT or your changes will be lost.
+Instead, add your details to contrib/MAINTAINERS.yml and run
+
+        contrib/gen-MAINTAINERS.py -o MAINTAINERS MAINTAINERS.yml
+
+This file contains information about people who are permitted to make
+changes to various parts of the compiler and associated libraries.
+
+Please do not contact the people in this file directly to report
+problems in GCC.
+
+For general information about GCC, please visit:
+
+  http://gcc.gnu.org
+
+To report problems in GCC, please visit:
+
+  http://gcc.gnu.org/bugs/
+
+If you'd like to CC a maintainer in bugzilla, please add @gcc.gnu.org
+to the account name given in the Write After Approval section below.
+Please use the email address given in <...> for direct email communication.
+
+Note: when adding someone who has commit access to a more specific section,
+please also ensure that there is a corresponding entry in the Write After
+Approval list, since that list contains the gcc.gnu.org account name.
+
+Maintainers
+===========""",
+    },
+    'global': {
+        'preamble': """
+                        Global Reviewers
+""",
+        'template': "{u[cn]:{w[cn]}} <{u[email]}>",
+        'widths': [('cn', 47)],
+        'filter': {'role': "Global", 'order': ['sn', 'cn', 'email']},
+        'posttext': """
+Note that while global reviewers can approve changes to any part of
+the compiler or associated libraries, they still need approval for
+their own patches from other maintainers or reviewers.
+
+Also note that maintainership of any area covers changes to web pages,
+docs, and the testsuite related to that.""",
+    },
+    'cpu': {
+        'preamble': """
+                        CPU Port Maintainers    (CPU alphabetical order)
+""",
+        'template': "{u[subsystem]:{w[subsystem]}} {u[cn]:{w[cn]}} 
<{u[email]}>",
+        'widths': [('subsystem', 23), ('cn', 23)],
+        'filter': {'role': "Maintainer", 'subclass': "CPU",
+                   'order': ['subsystem', 'sn', 'cn', 'email']},
+    },
+    'os': {
+        'preamble': """
+                        OS Port Maintainers     (OS alphabetical order)
+""",
+        'template': "{u[subsystem]:{w[subsystem]}} {u[cn]:{w[cn]}} 
<{u[email]}>",
+        'widths': [('subsystem', 23), ('cn', 23)],
+        'filter': {'role': "Maintainer", 'subclass': "OS",
+                   'order': ['subsystem', 'sn', 'cn', 'email']},
+    },
+    'lang': {
+        'preamble': """
+                        Language Front Ends Maintainers
+""",
+        'template': "{u[subsystem]:{w[subsystem]}} {u[cn]:{w[cn]}} 
<{u[email]}>",
+        'widths': [('subsystem', 23), ('cn', 23)],
+        'filter': {'role': "Maintainer", 'subclass': "Lang",
+                   'order': ['subsystem', 'sn', 'cn', 'email']},
+    },
+    'various': {
+        'preamble': """
+                        Various Maintainers   (Area alphabetical order)
+""",
+        'template': "{u[subsystem]:{w[subsystem]}}  {u[cn]:{w[cn]}} 
<{u[email]}>",
+        'widths': [('subsystem', 22), ('cn', 23)],
+        'filter': {'role': "Maintainer", 'subclass': "Subsystem",
+                   'order': ['subsystem', 'sn', 'cn', 'email']},
+        'posttext': """
+Note that individuals who maintain parts of the compiler need approval to
+check in changes outside of the parts of the compiler they maintain.""",
+    },
+    'reviewers': {
+        'preamble': """
+                        Reviewers
+""",
+        'template': "{u[subsystem]:{w[subsystem]}}  {u[cn]:{w[cn]}} 
<{u[email]}>",
+        'widths': [('subsystem', 22), ('cn', 23)],
+        'filter': {'role': "Reviewer",
+                   'order': ['subsystem', 'sn', 'cn', 'email']},
+        'posttext': """
+Note that while reviewers can approve changes to parts of the compiler
+that they maintain, they still need approval for their own patches
+from other maintainers or reviewers.""",
+    },
+    'writeafter': {
+        'preamble': """
+                        Write After Approval    (last name alphabetical order)
+
+Name                            BZ account      Email
+""",
+        'template': "{u[cn]:{w[cn]}} {u[account]:{w[account]}} <{u[email]}>",
+        'widths': [('cn', 31), ('account', 15)],
+        'filter': {'role': "WriteAfter",
+                   'order': ['sn', 'cn', 'account']},
+    },
+    'bz': {
+        'preamble': """
+                        Bug database only accounts
+""",
+        'template': "{u[cn]:{w[cn]}} <{u[email]}>",
+        'widths': [('cn', 47)],
+        'filter': {'role': "BZ",
+                   'order': ['sn', 'cn', 'email']},
+    },
+    'dco': {
+        'preamble': """
+                        Contributing under the DCO
+
+By adding your name and email to this section, you certify that all your
+subsequent contributions to GCC are made under the terms of the Developer's
+Certificate of Origin Version 1.1.  See https://gcc.gnu.org/dco.html for more
+information.
+
+""",
+        'template': "{u[cn]:{w[cn]}} <{u[email]}>",
+        'widths': [('cn', 47)],
+        'filter': {'role': "DCO",
+                   'order': ['sn', 'cn', 'email']},
+    },
+}
+
+def debug(msg):
+    global verbose
+    if verbose:
+        print(msg, file=sys.stderr)
+    return
+
+def mylower(txt):
+    return unidecode.unidecode(txt).lower()
+
+def format_output(outfile, data):
+    global active_only
+    all_users = data['users']
+    if active_only:
+        all_users = [u for u in filter(lambda x: not x.get('inactive', False),
+                                       data['users'])]
+    for section in boilerplate.values():
+        if 'preamble' in section:
+            print(section['preamble'], file=outfile)
+        if 'filter' in section:
+            l = []
+            role = section['filter']['role']
+            subclass = section['filter'].get('subclass')
+            for u in all_users:
+                for r in filter(lambda x: role in x, u['roles']):
+                    if subclass:
+                        sc = [s for s in filter(lambda x: x['name'] == r[role],
+                                                data['subsystems'])]
+                        if len(sc) > 1:
+                            verbose(f"multiple matches for {r[role]}")
+                        if not 'class' in sc[0] or sc[0]['class'] != subclass:
+                            continue
+                    d = {
+                        'email': u['email'][0],
+                        'account': u.get('account', '-'),
+                        'sn': u['sn'],
+                        'cn': u['cn'],
+                        'subsystem': r[role] if type(r) == dict else None,
+                    }
+                    if role == 'DCO':
+                        d['email'] = r['DCO']
+                    if role == 'WriteAfter' and type(r) == dict:
+                        d['email'] = r['WriteAfter']
+                    elif type(r) == dict and 'email' in r:
+                        d['email'] = r['email']
+                    w = dict()
+                    col = 0
+                    overrun = 0
+                    for field, width in section['widths']:
+                        width -= overrun
+                        w[field] = max(width, 1)
+                        overrun = max(len(d[field]) - width, 0)
+                    d['w'] = w
+                    l.append(d)
+            kfn = itemgetter(*section['filter']['order'])
+            for u in sorted(l,
+                            key=lambda x: tuple(mylower(v) for v in kfn(x))):
+                debug(str(u))
+                print (section['template'].format(u=u, w=u['w']), file=outfile)
+        if 'posttext' in section:
+            print(section['posttext'], file=outfile)
+    return
+
+def main():
+    global opts, verbose, active_only
+    optp = OptionParser(usage="Usage: %prog [<options>] user-data")
+    optp.add_option("-v", "--verbose", action="store_true",
+                    default=False, dest="verbose",
+                    help="Print some diagnostic messages")
+    optp.add_option("-a", "--active", action="store_true",
+                    default=False, dest="active_only",
+                    help="Omit inactive users")
+    optp.add_option("-o", "--output", metavar="FILE",
+                    default=None, dest="outfilename",
+                    help="Write to FILE instead of stdout")
+    opts, args = optp.parse_args()
+    if len(args) != 1:
+        optp.print_help()
+        sys.exit(1)
+    verbose = opts.verbose
+    active_only = opts.active_only
+    data = maintutils.load(args[0])
+    maintutils.validate(data)
+    if opts.outfilename:
+        out_file = open(opts.outfilename, "w", encoding="utf-8")
+    else:
+        out_file = sys.stdout
+    format_output(out_file, data)
+    return 0
+
+if __name__ == "__main__":
+    sys.exit (main())
diff --git a/contrib/maintainer_utils.py b/contrib/maintainer_utils.py
new file mode 100755
index 000000000000..a40c411392e8
--- /dev/null
+++ b/contrib/maintainer_utils.py
@@ -0,0 +1,276 @@
+#!/usr/bin/env python3
+
+# Utilities for manipulating/testing the MAINTAINERS.yml data.
+
+# Copyright (C) 2026 Free Software Foundation, Inc.
+#
+# This file is part of GCC.
+#
+# GCC is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# GCC is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING.  If not, write to
+# the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+# Boston, MA 02110-1301, USA.
+
+import json
+import jsonschema
+import sys
+import unidecode
+import yaml
+# Prefer the libYAML implementations if available.  Fall back to the
+# pure python versions as a backup.
+try:
+    from yaml import CLoader as Loader, CDumper as Dumper
+except:
+    from yaml import Loader, Dumper
+
+maintainer_schema = {
+    '$schema': 'https://json-schema.org/draft/2020-12/schema',
+    'type': 'object',
+    'properties': {
+        'users': {
+            'type': 'array',
+            'items': {
+                'type': 'object',
+                'properties': {
+                    'sn': {
+                        'type': 'string',
+                        'minlength': 1,
+                    },
+                    'cn': {
+                        'type': 'string',
+                        'minlength': 1,
+                    },
+                    'email': {
+                        'type': 'array',
+                        'items': {
+                            'type': 'string',
+                            'format': 'email',
+                        },
+                    },
+                    'roles': {
+                        'type': 'array',
+                        'items': {
+                            'oneOf': [
+                                {
+                                    'type': 'string',
+                                    'enum': ['Global', 'WriteAfter', 'BZ'],
+                                },
+                                {
+                                    'type': 'object',
+                                    'properties': {
+                                        'WriteAfter': {
+                                            'type': 'string',
+                                            'format': 'email',
+                                        },
+                                        'DCO': {
+                                            'type': 'string',
+                                            'format': 'email',
+                                        },
+                                    },
+                                    'additionalProperties': False,
+                                },
+                                {
+                                    'type': 'object',
+                                    'properties': {
+                                        'Maintainer': {
+                                            'type': 'string',
+                                        },
+                                        'Reviewer': {
+                                            'type': 'string',
+                                        },
+                                        'email': {
+                                            'type': 'string',
+                                            'format': 'email',
+                                        },
+                                    },
+                                    'additionalProperties': False,
+                                    'oneOf': [
+                                        {'required': ["Maintainer"] },
+                                        {'required': ["Reviewer"] },
+                                    ],
+                                },
+                            ],
+                        },
+                        'minlength': 1,
+                    },
+                    'account': {
+                        'type': 'string',
+                        'minlength': 1,
+                        'pattern': '[a-zA-Z][a-zA-Z0-9]*',
+                    },
+                    'aliases': {
+                        'type': 'array',
+                        'minlength': 1,
+                        'items': {
+                            'type': 'string',
+                            'minlength': 1,
+                        },
+                    },
+                    'inactive': {
+                        'type': 'boolean',
+                    }
+                },
+                'additionalProperties': False,
+                'required': ['sn', 'cn', 'email', 'roles'],
+            },
+        },
+        'subsystems': {
+            'type': 'array',
+            'items': {
+                'type': 'object',
+                'properties': {
+                    'name': {
+                        'type': 'string',
+                        'minlength': 1,
+                    },
+                    'class': {
+                        'type': 'string',
+                        'minlength': 1,
+                    },
+                    'labels': {
+                        'type': 'array',
+                        # Disabled until we populate the labels
+                        # 'minlength': 1,
+                        'items': {
+                            'type': 'string',
+                            'minlength': 3,
+                            'pattern': 
'[a-zA-Z][-+a-zA-Z0-9]*(/[a-zA-Z][-+a-zA-Z0-9]*)+',
+                        },
+                    },
+                },
+                'additionalProperties': False,
+                'required': ['name', 'labels'],
+            },
+        },
+    },
+}
+
+error_count = 0
+warning_count = 0
+
+def _fatal (msg):
+    print (f"fatal: {msg}", file=sys.stderr)
+    sys.exit (1)
+
+def _error (msg):
+    global error_count
+    print (f"error: {msg}", file=sys.stderr)
+    error_count += 1
+
+def _warning (msg):
+    global warning_count
+    print (f"warning: {msg}", file=sys.stderr)
+    warning_count += 1
+
+def _format_path (path, data):
+    """Try to turn a validation error path into something more readable"""
+    elts = [""]
+    cur = data
+    try:
+        for elt in path:
+            if isinstance (cur, list) and isinstance (elt, int):
+                item = cur[elt]
+                if isinstance (item, dict) and 'cn' in item:
+                    elts[-1] += f"[cn = {item['cn']}]"
+                elif isinstance (item, dict) and 'name' in item:
+                    elts[-1] += f"[name = {item['name']}]"
+                else:
+                    elts[-1] += f"[(anon index): {elt}]"
+                cur = item
+            else:
+                cur = cur[elt]
+                elts.append (str (elt))
+    except Exception as e:
+        print ('/'.join(elts))
+        raise e
+    if elts[0] == "":
+        elts = elts[1:]
+    return '/'.join(elts)
+
+def _check_schema(data):
+    try:
+        schema = jsonschema.validators.Draft202012Validator(maintainer_schema)
+        errors = sorted(schema.iter_errors(data), key=lambda e: e.path)
+        for err in errors:
+            _error (f"{_format_path (err.path, data)}: {err.message}")
+    except jsonschema.exceptions.SchemaError as e:
+        _fatal (str (e))
+    return
+
+def validate(data):
+    """Check the data against the schema and our own consistency checks"""
+    _check_schema(data)
+    # The data conforms to the expected schema, so now run some data
+    # validation checks.
+
+    # Maintainer and Reviewer roles need to match entries in the
+    # subsystems list; Maintainer entires must also have a class entry, though
+    # that is optional for Reviewers.
+    for u in data['users']:
+        # Users with the 'BZ' role should not have any other roles; we
+        # can quickly skip the additional checks if that is the case.
+        if (len(u['roles']) == 1
+            and u['roles'][0] == 'BZ'):
+            continue
+        seen_writeafter = False
+        only_dco = True
+        for r in u['roles']:
+            if isinstance (r, str):
+                if r == 'BZ':
+                    _error(
+                        f"User '{u['cn']}' has 'BZ' role as well as others.")
+                if r == 'WriteAfter':
+                    seen_writeafter = True
+                only_dco = False
+                continue
+            if 'WriteAfter' in r:
+                seen_writeafter = True
+            need_class = True
+            if 'DCO' in r:
+                continue
+            only_dco = False
+            n = r.get('Maintainer')
+            if not n:
+                need_class = False
+                n = r.get('Reviewer')
+            if n:
+                subsystems = list(filter (lambda s: s['name'] == n,
+                                          data['subsystems']))
+                if len(subsystems) == 1:
+                    if (need_class
+                        and not 'class' in subsystems[0]):
+                        _error (f"subsystem '{n}' missing a class.")
+                elif len(subsystems) == 0:
+                    _error (f"No subsystem entry for '{n}'.")
+                else:
+                    _error (f"Multiple subsystem entries for '{n}'.")
+        if not seen_writeafter and not only_dco:
+            _error(f"User '{u['cn']}' lacks WriteAfter role.")
+    if error_count:
+        sys.exit(1)
+    return
+
+def load(file):
+    with open(file, "r", encoding="utf-8") as f:
+        data = yaml.load (f, Loader=Loader)
+    return data
+
+def main():
+    if len(sys.argv) != 2:
+        print(f"Usage: {sys.argv[0]} path-to-MAINTAINERS.yml")
+        return 1
+    validate (load (sys.argv[1]))
+    return 0
+
+if __name__ == "__main__":
+    sys.exit(main())
-- 
2.54.0