# Maintainer: Neophytos Kolokotronis <tetris4@gmail,com>
# Contributors from AUR: M0Rf30
#                        Samsagax <samsagax@gmail.com>

_PACKAGES=`pacman -Qsq linux`
_KERNELS=`pacman -Ql $_PACKAGES | grep /modules.alias.bin | sed 's/.*\/lib\/modules\/\(.*\)\/modules.alias.bin/\1/g'`

pkgname=bbswitch
pkgver=0.5
pkgrel=2
pkgdesc="kernel module allowing to switch dedicated graphics card on Optimus laptops"
arch=('i686' 'x86_64')
url=("http://github.com/Bumblebee-Project/bbswitch")
license=('GPL')
provides=('bbswitch')
makedepends=('linux-headers')
install=bbswitch.install
source=("https://github.com/downloads/Bumblebee-Project/bbswitch/${pkgname}-${pkgver}.tar.gz")
md5sums=('5e0e6eb9c5e8c10db56e5b349b43bba7')

build() {
  cd ${srcdir}/${pkgname}-${pkgver}
  sed -i "s|/lib/modules|/usr/lib/modules|g" Makefile

  for _kernver in $_KERNELS; do
    msg2 "Building module for $_kernver..."

    # KDIR is necessary even when cleaning
    make KDIR=/usr/src/linux-${_kernver} clean
    make KDIR=/usr/src/linux-${_kernver}
  done
}

package() {
  cd ${srcdir}/${pkgname}-${pkgver}

   # Find all extramodules directories
  _EXTRAMODULES=`find /lib/modules -name version | sed 's|\/lib\/modules\/||; s|\/version||'`

  # Loop through all detected kernels
  for _kernver in $_KERNELS; do

    # Loop through all detected extramodules directories
    for _moduledirs in $_EXTRAMODULES; do
      # Check which extramodules directory corresponds with the built module
      if [ `cat "/lib/modules/${_moduledirs}/version"` = $_kernver ]; then
        mkdir -p "${pkgdir}/lib/modules/${_moduledirs}/"
        install -m644 bbswitch.ko "${pkgdir}/lib/modules/${_moduledirs}/"
        gzip "${pkgdir}/lib/modules/${_moduledirs}/bbswitch.ko"
      fi
    done
  done
}