From d905ac0da109fa891feedb533a37af3dab980afd Mon Sep 17 00:00:00 2001 From: =?utf8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= Date: Mon, 2 Feb 2026 12:05:13 +0100 Subject: [PATCH] docs/INCOMPATIBILITIES: describe the new meson option --- docs/INCOMPATIBILITIES.md | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/docs/INCOMPATIBILITIES.md b/docs/INCOMPATIBILITIES.md index b0f65748622..c02394d4120 100644 --- a/docs/INCOMPATIBILITIES.md +++ b/docs/INCOMPATIBILITIES.md @@ -7,7 +7,16 @@ SPDX-License-Identifier: LGPL-2.1-or-later # Compatibility with SysV -Since systemd v260, support for SysV functionalities has been removed. The documentation below is preserved for historical references only. +Since systemd v260, support for SysV functionality has been removed. +The documentation below is preserved for historical reference only. + +A few interfaces are optionally kept for backward compatibility. +When systemd is compiled with the `-Dcompat-sysv-interfaces=true` setting, +legacy interfaces are provided, +e.g. the `runlevelX.target` aliases, +and lock directories in under `/var` and `/run`. +This option may be extended to cover other deprecated interfaces in the future. + ## Pre v260 state -- 2.47.3