Arch Linux

I am trying to build em28xx drivers (http://mcentral.de/hg/~mrec/em28xx-new) but the build fails because of missing headers.
This problem and the fix were reported there :
http://www.quadrantegamma.it/component/content/article/12-intrepid/60-pinnacle-pctv-usb-stick-dvb-t.html
http://forum.ubuntuusers.de/topic/terratec-prodigy-hybrid-usb-stick-cinergy-hyb/2/#post-1749852

I just had a look at the PKGBUILD, this driver is really evil, headers were already added twice for it :
# add dvb headers for external modules
# in reference to:
# http://bugs.archlinux.org/task/9912
mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/drivers/media/dvb/dvb-core
cp drivers/media/dvb/dvb-core/*.h ${pkgdir}/usr/src/linux-${_kernver}/drivers/media/dvb/dvb-core/
# add dvb headers for external modules
# in reference to:
# http://bugs.archlinux.org/task/11194
mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/include/config/dvb/
cp include/config/dvb/*.h ${pkgdir}/usr/src/linux-${_kernver}/include/config/dvb/

Hopefully this is the last change we need :
# add dvb headers for http://mcentral.de/hg/~mrec/em28xx-new
mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/drivers/media/dvb/dvb-core
cp drivers/media/dvb/dvb-core/*.h ${pkgdir}/usr/src/linux-${_kernver}/drivers/media/dvb/dvb-core/
mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/include/config/dvb/
cp include/config/dvb/*.h ${pkgdir}/usr/src/linux-${_kernver}/include/config/dvb/
mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/drivers/media/dvb/frontends/
cp drivers/media/dvb/frontends/lgdt330x.h drivers/media/video/msp3400-driver.h ${pkgdir}/usr/src/linux-${_kernver}/drivers/media/dvb/frontends/