nel@pmac:~$ cat /usr/ports/ppc/opt/libdrm/Pkgfile 
# Description: Userspace interface to kernel DRM services
# URL: http://dri.freedesktop.org/
# Maintainer: acrux, acrux at linuxmail dot org
# Depends on: libpthread-stubs
# PPC!=:

name=libdrm
version=2.4.29
release=1
source=(http://dri.freedesktop.org/$name/$name-$version.tar.bz2 
	pci0001.patch)

build() {
    cd $name-$version
	# if your videocard is on PCI:0001 bus (e.g. on Pegasos2)
#	patch -p0 -i $SRC/pci0001.patch

	./configure --prefix=/usr --with-gnu-ld 
	--disable-intel --enable-udev 
	--enable-nouveau-experimental-api

    make
    make DESTDIR=$PKG install
}