Hello,
This patch add a new autoconf argument that allows installation
into the vendor configuration directory (/usr/etc/). Some linux
distribution now move system configuration files from /etc to /usr/etc.
See this ref: [0].
So, it could be a good idea to give the opportunity for a project
to install in both location /etc and /usr/etc in same time. Not just by
overriding the sysconfdir arguments. For example we have two projects
PAM and D-Bus that look both in /etc and /usr/etc.
As a packager for a Linux distribution, it will save times if we
get this multi choice of configuration directory installation.
This patch was created with a Colleague Jason Sikes. Thanks to him!
[0] https://0pointer.net/blog/projects/stateless.html
--
Best regards,
Valentin Lefebvre
Linux Distribution Engineer - packager
Member of System Boot and Init team
SUSE Software Solutions Germany GmbH
56100 Lorient, France
From 0881470cca7a85c8e864a9eaf5cfad50e471002a Mon Sep 17 00:00:00 2001
From: Valentin Lefebvre
Date: Mon, 6 Feb 2023 16:28:00 +0100
Subject: [PATCH] stateless systems: add vendor conf dir install
This patch add a new autoconf argument that allows installation
into the vendor configuration directory (/usr/etc/). It gives the
opportunity for a project to install in both location /etc and /usr/etc.
Signed-off-by: Valentin Lefebvre
---
doc/autoconf.texi | 7 ++-
doc/make-stds.texi | 14 +-
doc/standards.texi | 2 +-
lib/autoconf/general.m4 | 11 ++-
4 files changed, 30 insertions(+), 4 deletions(-)
diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 9a396fc8..79208550 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -2992,6 +2992,11 @@ The directory for installing modifiable architecture-independent data.
The directory for installing read-only single-machine data.
@end defvar
+@defvar distconfdir
+@ovindex distconfdir
+The directory for installing distribution-provided read-only single-machine data.
+@end defvar
+
Most of these variables have values that rely on @code{prefix} or
@code{exec_prefix}. It is deliberate that the directory output
@@ -27328,7 +27333,7 @@ introduced in this document.
@c LocalWords: Systemology Checkpointing Changequote INTERCAL changequote dfn
@c LocalWords: Quadrigraphs builtins Shellology acconfig Bugward LIBOBJ Imake
@c LocalWords: LIBOBJS IFELSE cindex flushright Pinard Metaconfig uref Simons
-@c LocalWords: distclean uninstall noindent versioning Tromey dir vr
+@c LocalWords: distclean uninstall noindent versioning Tromey dir vr distconfdir
@c LocalWords: SAMS samp aclocal acsite underquoted emph itemx prepend SUBST
@c LocalWords: evindex automake Gettext autopoint gettext symlink libtoolize
@c LocalWords: defmac INIT tarname ovindex cvindex BUGREPORT PREREQ asis PROG
diff --git a/doc/make-stds.texi b/doc/make-stds.texi
index 132476c7..0da9f28d 100644
--- a/doc/make-stds.texi
+++ b/doc/make-stds.texi
@@ -504,7 +504,19 @@ files that are modified in the normal course of their use (programs
whose purpose is to change the configuration of the system excluded).
Those probably belong in @file{$(localstatedir)}.
-@item sharedstatedir
+@item distconfdir
+ The directory for installing read-only configuration data files that
+ are provided are part of a distribution (Suse, Red Hat, Debian, etc.).
+ This directory is similar to @samp{sysconfdir}, except that files placed
+ here are intended to be vendor-supplied system defaults and placed
+ in a read-only filesystem. A system administrator should override or
+ suppliment these defaults by placing them in @samp{sysconfdir}.
+
+ This directory should normally be @file{/usr/etc}, but write it as
+ @file{$(prefix)/usr/etc}. (If you are using Autoconf, write it as
+ @samp{@@distconfdir@@}.)
+
+'@item sharedstatedir
The directory for installing architecture-independent data files which
the programs modify while they run. This should normally be
@file{/usr/local/com}, but write it as @file{$(prefix)/com}.
diff --git a/doc/standards.texi b/doc/standards.texi
index 30592c65..8713c4b4 100644
--- a/doc/standards.texi
+++ b/doc/standards.texi
@@ -4254,7 +4254,7 @@ corresponding to most of the standard directory variables
@example
--prefix --exec-prefix --bindir --sbindir --libexecdir --sysconfdir
---sharedstatedir --localstatedir --runstatedir
+--distconfdir --sharedstatedir --localstatedir --runstatedir
--libdir --includedir --oldincludedir
--datarootdir --datadir --infodir --localedir --mandir --docdir
--htmldir --dvidir --pdfdir --psdir
diff --git a/lib/autoconf/general.m4 b/lib/autoconf/general.m4
index ecda0a51..820a0507 100644
--- a/lib/autoconf/general.m4
+++ b/lib/autoconf/general.m4
@@ -600,6 +600,7 @@ AC_SUBST([libexecdir], ['${exec_prefix}/libexec'])dnl
AC_SUBST([datarootdir],['${prefix}/share'])dnl
AC_SUBST([datadir],['${datarootdir}'])dnl
AC_SUBST([sysconfdir], ['${p
