bbswitch-0.8-r1 for Linux 4.12 added.

sys-power/bbswitch/Manifest

@@ -0,0 +1 @@
+DIST bbswitch-0.8.tar.gz 15800 SHA256 76cabd3f734fb4fe6ebfe3ec9814138d0d6f47d47238521ecbd6a986b60d1477 SHA512 11ab163931feb6c0e202d04c4552b848e999fedea9990390c26b28abdb4a69081ccfb5a22d1e390cc274f1c0cfc9adedc719c5fece14738b17aaa93e28865b7c WHIRLPOOL 4215bb74779d5bfaacd1177f89636a9006fbce369c381e620868e7012092756417f7df732b373341254fad75e08f6de4536921f5478f0032d2961d22d56a3c15

sys-power/bbswitch/bbswitch-0.8-r1.ebuild

@@ -0,0 +1,46 @@
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=5
+inherit eutils linux-mod
+
+DESCRIPTION="Toggle discrete NVIDIA Optimus graphics card"
+HOMEPAGE="https://github.com/Bumblebee-Project/bbswitch"
+SRC_URI="https://github.com/Bumblebee-Project/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+
+SLOT="0"
+LICENSE="GPL-3+"
+KEYWORDS="amd64 x86"
+IUSE=""
+
+DEPEND="
+	virtual/linux-sources
+	sys-kernel/linux-headers
+"
+RDEPEND=""
+
+MODULE_NAMES="bbswitch(acpi)"
+
+pkg_setup() {
+	linux-mod_pkg_setup
+
+	BUILD_TARGETS="default"
+	BUILD_PARAMS="KVERSION=${KV_FULL}"
+}
+
+src_prepare() {
+	# Fix build failure, bug #513542
+	sed -i 's/^KDIR.*$/KDIR\ \:= \/usr\/src\/linux/g' Makefile || die
+
+	if kernel_is ge 4 12 0 ; then
+		epatch "${FILESDIR}"/linux-4.12.patch
+	fi
+}
+
+src_install() {
+	insinto /etc/modprobe.d
+	newins "${FILESDIR}"/bbswitch.modprobe bbswitch.conf
+	dodoc NEWS README.md
+
+	linux-mod_src_install
+}

sys-power/bbswitch/files/bbswitch.modprobe

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+options bbswitch load_state=-1 unload_state=-1

sys-power/bbswitch/files/linux-4.12.patch

@@ -0,0 +1,10 @@
+--- bbswitch.c	2017-07-07 18:14:51.818861595 +0300
++++ bbswitch.c	2017-07-07 18:14:42.728655302 +0300
+@@ -32,6 +32,7 @@
+ #include <linux/acpi.h>
+ #include <linux/module.h>
+ #include <asm/uaccess.h>
++#include <linux/uaccess.h>
+ #include <linux/suspend.h>
+ #include <linux/seq_file.h>
+ #include <linux/pm_runtime.h>