From 89a9a25472de8699172e54b67d6c8dd3b8ddeca5 Mon Sep 17 00:00:00 2001
From: Michael Egger <egger.m@protonmail.com>
Date: Sat, 27 Nov 2021 12:20:18 +0100
Subject: app-emulation/virtualbox-modules: add basic clang+thinlto kernel
 support

To use this there's no need to do anything beside having a kernel
built with clang+(thin)lto (normally through LLVM=1 LLVM_IAS=1).

Closes: https://bugs.gentoo.org/820536
Package-Manager: Portage-3.0.28, Repoman-3.0.3
Signed-off-by: Michael Egger <egger.m@protonmail.com>
Closes: https://github.com/gentoo/gentoo/pull/23095
Signed-off-by: Lars Wendler <polynomial-c@gentoo.org>
---
 .../virtualbox-modules-6.1.30-r1.ebuild            | 67 ++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 app-emulation/virtualbox-modules/virtualbox-modules-6.1.30-r1.ebuild

(limited to 'app-emulation')

diff --git a/app-emulation/virtualbox-modules/virtualbox-modules-6.1.30-r1.ebuild b/app-emulation/virtualbox-modules/virtualbox-modules-6.1.30-r1.ebuild
new file mode 100644
index 000000000000..4d10ad7544b5
--- /dev/null
+++ b/app-emulation/virtualbox-modules/virtualbox-modules-6.1.30-r1.ebuild
@@ -0,0 +1,67 @@
+# Copyright 2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+# XXX: the tarball here is just the kernel modules split out of the binary
+#      package that comes from VirtualBox-*.run
+
+EAPI=7
+
+inherit linux-mod toolchain-funcs
+
+MY_P="vbox-kernel-module-src-${PV}"
+DESCRIPTION="Kernel Modules for Virtualbox"
+HOMEPAGE="https://www.virtualbox.org/"
+SRC_URI="https://dev.gentoo.org/~polynomial-c/virtualbox/${MY_P}.tar.xz"
+
+LICENSE="GPL-2"
+SLOT="0/$(ver_cut 1-2)"
+[[ "${PV}" == *_beta* ]] || [[ "${PV}" == *_rc* ]] || \
+KEYWORDS="~amd64"
+IUSE="pax-kernel"
+
+RDEPEND="!=app-emulation/virtualbox-9999"
+
+S="${WORKDIR}"
+
+BUILD_TARGETS="all"
+MODULE_NAMES="vboxdrv(misc:${S}) vboxnetflt(misc:${S}) vboxnetadp(misc:${S})"
+MODULESD_VBOXDRV_ENABLED="yes"
+MODULESD_VBOXNETADP_ENABLED="no"
+MODULESD_VBOXNETFLT_ENABLED="no"
+
+pkg_setup() {
+	linux-mod_pkg_setup
+	BUILD_PARAMS="CC=$(tc-getBUILD_CC) KERN_DIR=${KV_DIR} KERN_VER=${KV_FULL} O=${KV_OUT_DIR} V=1 KBUILD_VERBOSE=1"
+	if linux_chkconfig_present CC_IS_CLANG; then
+		ewarn "Warning: building ${PN} with a clang-built kernel is experimental."
+
+		BUILD_PARAMS+=' CC=${CHOST}-clang'
+		if linux_chkconfig_present LD_IS_LLD; then
+			BUILD_PARAMS+=' LD=ld.lld'
+			if linux_chkconfig_present LTO_CLANG_THIN; then
+				# kernel enables cache by default leading to sandbox violations
+				BUILD_PARAMS+=' ldflags-y=--thinlto-cache-dir= LDFLAGS_MODULE=--thinlto-cache-dir='
+			fi
+		fi
+	fi
+}
+
+src_prepare() {
+	if use pax-kernel && kernel_is -ge 3 0 0 ; then
+		eapply -p0 "${FILESDIR}"/${PN}-5.2.8-pax-const.patch
+	fi
+
+	default
+}
+
+src_install() {
+	linux-mod_src_install
+	insinto /usr/lib/modules-load.d/
+	newins "${FILESDIR}"/virtualbox.conf-r1 virtualbox.conf
+}
+
+pkg_postinst() {
+	# Remove vboxpci.ko from current running kernel
+	find /lib/modules/${KV_FULL}/misc -type f -name "vboxpci.ko" -delete
+	linux-mod_pkg_postinst
+}
-- 
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