My PKGBUILD of nvidiabl that fixed backlight in my Asus G55VW notebook

nvidiabl-PKGBUILD

# Maintainer: Hasan Gormus aka hsngrms <hsngrms at yandex dot com>
# Contributor: uwinkelvos <uwinkelvos at gmx dot de>
# Contributor: Munzir Taha <munzirtaha at gmail dot com>
pkgname=nvidiabl
pkgver=0.81
pkgrel=1
pkgdesc="Linux driver for setting the backlight brightness on laptops using NVIDIA GPU"
arch=('x86_64' 'i686')
url="https://github.com/guillaumezin/nvidiabl"
license=('GPL')
depends=()
makedepends=('linux-headers')
optdepends=('nvidiablctl: adjust backlight easily')
conflicts=(nvidia-bl)
install=nvidiabl.install
source=(https://github.com/guillaumezin/nvidiabl/archive/v${pkgver}.tar.gz)
sha256sums=('2e8224f4720f312879a3cdaada66b762c574d88178ea24f1dda4016c54921b55')

_extramodules="extramodules-$(uname -r | cut -f-2 -d'.')-ARCH"

build() {
  cd "${srcdir}/nvidiabl-${pkgver}/"
  make
}

package() {
  cd "${srcdir}/nvidiabl-$pkgver/"
  install -Dm644 nvidiabl.ko "${pkgdir}/usr/lib/modules/${_extramodules}/nvidiabl.ko"
}