kbuild: pacman-pkg: make "rc" releases adhere to pacman versioning scheme

[ Upstream commit 202550713128da20d9381d6d2dc0f6b73839f434 ]

The package versioning scheme does not enable smooth upgrades from "rc"
releases to the corresponding stable releases (e.g. 7.0.0-rc7 -> 7.0.0)
because pacman considers that a downgrade due to the underscore in
pkgver (e.g. 7.0.0_rc7), see e.g. vercmp(8) for an explanation of the
package version comparison used by pacman. Package versions which are
derived from said releases (e.g. built from git revisions) are
similarly affected. Fix this by modifying pkgver in order to remove the
hyphen from kernel versions containing "-rcN", where N is a
non-negative integer.

Acked-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Viktor Jägersküpper <viktor_jaegerskuepper@freenet.de>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Link: https://patch.msgid.link/20260515215913.92481-1-viktor_jaegerskuepper@freenet.de
Fixes: c8578539deba ("kbuild: add script and target to generate pacman package")
Signed-off-by: Nicolas Schier <nsc@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/scripts/package/PKGBUILD b/scripts/package/PKGBUILD
index 452374d63c244498d3c3281f7a52b613eed6c391..1213c8e04671ef393292bc8b72d04910aa7ffee5 100644 (file)
--- a/scripts/package/PKGBUILD
+++ b/scripts/package/PKGBUILD
@@ -10,7 +10,7 @@ for pkg in $_extrapackages; do
        pkgname+=("${pkgbase}-${pkg}")
 done
 
-pkgver="${KERNELRELEASE//-/_}"
+pkgver="$(echo "${KERNELRELEASE}" | sed 's/-\(rc[0-9]\+\)/\1/;s/-/_/g')"
 # The PKGBUILD is evaluated multiple times.
 # Running scripts/build-version from here would introduce inconsistencies.
 pkgrel="${KBUILD_REVISION}"