linux-kernel - [PATCH] kbuild: add debug package to pacman PKGBUILD

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Message-ID: <20240801132945.47963-1-jose.fernandez@linux.dev>
Date: Thu,  1 Aug 2024 07:29:40 -0600
From: Jose Fernandez <jose.fernandez@...ux.dev>
To: Thomas Weißschuh <linux@...ssschuh.net>,
	Christian Heusel <christian@...sel.eu>,
	Nathan Chancellor <nathan@...nel.org>,
	Masahiro Yamada <masahiroy@...nel.org>,
	Nicolas Schier <nicolas@...sle.eu>
Cc: Jose Fernandez <jose.fernandez@...ux.dev>,
	Peter Jung <ptr1337@...hyos.org>,
	linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] kbuild: add debug package to pacman PKGBUILD

Add a new -debug package to the pacman PKGBUILD that will contain the
vmlinux image for debugging purposes. This package depends on the
-headers package and will be installed in /usr/src/debug/${pkgbase}.

The vmlinux image is needed to debug core dumps with tools like crash.

Signed-off-by: Jose Fernandez <jose.fernandez@...ux.dev>
Reviewed-by: Peter Jung <ptr1337@...hyos.org>
---
 scripts/package/PKGBUILD | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/scripts/package/PKGBUILD b/scripts/package/PKGBUILD
index 663ce300dd06..beda3db21863 100644
--- a/scripts/package/PKGBUILD
+++ b/scripts/package/PKGBUILD
@@ -6,6 +6,7 @@ pkgbase=${PACMAN_PKGBASE:-linux-upstream}
 pkgname=("${pkgbase}" "${pkgbase}-api-headers")
 if grep -q CONFIG_MODULES=y include/config/auto.conf; then
 	pkgname+=("${pkgbase}-headers")
+	pkgname+=("${pkgbase}-debug")
 fi
 pkgver="${KERNELRELEASE//-/_}"
 # The PKGBUILD is evaluated multiple times.
@@ -89,6 +90,15 @@ _package-headers() {
 	ln -sr "${builddir}" "${pkgdir}/usr/src/${pkgbase}"
 }
 
+_package-debug(){
+    pkgdesc="Non-stripped vmlinux file for the ${pkgdesc} kernel"
+    depends=(${pkgbase}-headers)
+
+    cd "${objtree}"
+    mkdir -p "$pkgdir/usr/src/debug/${pkgbase}"
+    install -Dt "$pkgdir/usr/src/debug/${pkgbase}" -m644 vmlinux
+}
+
 _package-api-headers() {
 	pkgdesc="Kernel headers sanitized for use in userspace"
 	provides=(linux-api-headers)
-- 
2.46.0