#! /bin/bash
# Build radeon driver for glamor and mesa with gallium3d
# See http://www.x.org/wiki/radeonBuildHowTo#Stable_branch

export PREFIX="/opt/xorg"

BASEDIR=`pwd`/my_radeonsi
SAVEFILES_DIR=$HOME/Downloads/git
CPU_CORES=`grep -c '^processor' /proc/cpuinfo`
export CONCURRENCY_LEVEL=$(( $CPU_CORES + 1 ))
export MAKEFLAGS=-j$CONCURRENCY_LEVEL
# XSERVER=xorg-server-1.12.4 # Doesn't work
XSERVER=xorg-server-1.11.4
XSERVER_URI=http://ftp.x.org/pub/individual/xserver/$XSERVER.tar.bz2
SH="sh -vx"
SH=sh
DEBUGCMD="set -vx"
DEBUGCMD=
# KERNEL_GIT=git://people.freedesktop.org/~agd5f/linux; KERNEL_REV=f06e99f02d53402530ef90117fada184b61ee7e9
KERNEL_GIT=git://people.freedesktop.org/~airlied/linux; KERNEL_REV=origin/drm-next
BUILD_KERNEL=true
INSTALL_KERNEL=true

FRESH=true
[ -f $BASEDIR/src/util/macros/config.log ] && FRESH=false

download_and_build_kernel() {
    echo "*** Building kernel"
    NEW=true
    [ -d linux ] && NEW=false
    $NEW && ( echo "*** Downloading kernel"; git clone $KERNEL_GIT )
    pushd linux || return
    git pull
    $NEW && git checkout -b mybranch $KERNEL_REV
    mkdir -p mykernel
    mykernel=`pwd`/mykernel
    echo "*** make kernel"
    if $NEW; then
        make O=$mykernel mrproper
        cp /boot/config-`uname -r` $mykernel/.config
        yes "" | make O=$mykernel silentoldconfig
        yes "" | make O=$mykernel oldconfig
    fi
    make -j$CONCURRENCY_LEVEL O=$mykernel
    make -j$CONCURRENCY_LEVEL O=$mykernel modules
    popd
}

download_and_install_module() {
    NAME=$1
    GIT_URI=$2
    CONFIG_OPTS=$3
    BRANCH=$4
    echo "*** Building $NAME"
    $FRESH && ( echo "*** Downloading $NAME"; git clone $GIT_URI )
    pushd $NAME || return
    [ ! -z "$BRANCH" ] && git checkout -b mybranch $BRANCH
    git pull
    echo "*** Building $NAME"
    ./autogen.sh --prefix=$PREFIX $CONFIG_OPTS
    $FRESH && ( echo "*** make clean in $NAME"; make clean )
    make -j$CONCURRENCY_LEVEL
    echo "*** Installing $NAME"
    sudo make -j1 install
    popd
    echo "*** Done with $NAME"
}

download_and_install_llvm() {
    echo "*** Downloading llvm"
    $FRESH && git clone git://people.freedesktop.org/~tstellar/llvm
    pushd llvm || return
    git pull
    echo "*** Building llvm"
    ./configure --prefix=/usr/local  --enable-experimental-targets=R600 --enable-optimized --cache-file=/dev/null --srcdir=.
    $FRESH && make clean
    make -j$CONCURRENCY_LEVEL
    sudo make -j1 install
    popd
}

$DEBUGCMD


mkdir -p "$BASEDIR" || exit
pushd "$BASEDIR" || exit


# Only 3.7+ has working KMS for me (4 monitors)
echo "*** Installing required packages"
sudo apt-get install git pbzip2 axel x11-apps
sudo apt-get install -t experimental libdrm-dev libdrm2 libkms1 libdrm-intel1 libdrm-radeon1 linux-kbuild-3.7 linux-image-3.7-trunk-amd64 inux-support-3.7-trunk linux-source-3.7 linux-headers-3.7 linux-headers-3.7-trunk-common linux-headers-3.7-trunk-all x11proto-gl-dev x11proto-randr-dev libxcb-shm0-dev libxcb-util0-dev libxcb-util0 libfs-dev libxcb-randr0 libxcb-randr0-dev libxft-dev libxcursor-dev libxrandr-dev libxxf86dga-dev
sudo apt-get build-dep x11-apps xserver-xorg-video-ati xserver-xorg xserver-xorg-video-all xserver-xorg-core libdrm mesa libxcb1-dev


sudo rm -rf $PREFIX

if $BUILD_KERNEL; then
    download_and_build_kernel
    if $INSTALL_KERNEL; then
        pushd linux
        mykernel=`pwd`/mykernel
        sudo make O=$mykernel INSTALL_MOD_STRIP=1 modules_install
        sudo make O=$mykernel INSTALL_MOD_STRIP=1 install
        sudo update-grub
        popd
    fi
fi

download_and_install_llvm

mkdir -p src || exit 1
mkdir -p build || exit 1

pushd src

if $FRESH; then
    echo "*** Downloading build scripts"
    git clone git://anongit.freedesktop.org/git/xorg/util/modular util/modular
    ( cd util/modular; git pull)
    BUILD_OPT="-n --clone"
    echo "*** Downloading/building Xorg stack"
else
    BUILD_OPT="-p -a -n"
    echo "*** Building Xorg stack"
fi

$SH util/modular/build.sh $BUILD_OPT -s sudo -n --confflags "--prefix=$PREFIX --enable-gallium-radeon --with-state-trackers=dri,glx --with-dri-driverdir=$PREFIX/lib/dri --with-egl-platforms=x11,drm --with-gallium-drivers=swrast,radeonsi --enable-gbm --enable-shared-glapi --enable-glx-tls --with-dri-drivers=radeon,swrast --enable-glamor" $BASEDIR/build

popd

# Download and build older xserver
if true; then
    echo "*** Downloading $XSERVER"
    [ ! -f $SAVEFILES_DIR/$XSERVER.tar.bz2 ] && ( cd $SAVEFILES_DIR; axel -a $XSERVER_URI || exit 1 )
    [ $FRESH ] && pbzip2 -dc <$SAVEFILES_DIR/$XSERVER.tar.bz2 | tar xf -
    pushd $XSERVER
    echo "*** Building $XSERVER"
    ./autogen.sh --prefix=$PREFIX --enable-glx-tls --enable-xorg --disable-dmx --disable-xvfb --disable-xnest --disable-xwin
    $FRESH && make clean
    make -j$CONCURRENCY_LEVEL
    sudo make -j1 install
    popd
else
    # This builds a server with video ABI 12 - doesn't work
    download_and_install_module xserver git://anongit.freedesktop.org/git/xorg/xserver "--prefix=$PREFIX --enable-glx-tls --enable-xorg --disable-dmx --disable-xvfb --disable-xnest --disable-xwin" a615b90cab7569fae9d123e4da1d3373c871d84b # See http://www.freedesktop.org/wiki/Software/Glamor
fi

download_and_install_module drm git://anongit.freedesktop.org/git/mesa/drm "--prefix=$PREFIX"
download_and_install_module mesa git://anongit.freedesktop.org/mesa/mesa "--prefix=$PREFIX --with-dri-driverdir=$PREFIX/lib/dri --with-egl-platforms=x11,drm --with-gallium-drivers=swrast,r300,r600,radeonsi --enable-gbm --enable-shared-glapi --enable-glx-tls --with-dri-drivers=radeon,swrast"
sudo ln -sfT $PREFIX/lib/dri/radeonsi_dri.so /usr/local/lib/dri/radeonsi_dri.so # Otherwise AIGLX won't find it - doesn't consider the module search path???
# sudo ln -sfT $PREFIX/lib/libGL.so /usr/lib/libGL.so # Otherwise glamor won't build
sudo ln -sfT $PREFIX/lib/libGL.so /usr/local/lib/libGL.so # Otherwise glamor won't build
download_and_install_module glamor git://anongit.freedesktop.org/git/xorg/driver/glamor "--prefix=$PREFIX --enable-glx-tls"
download_and_install_module driver/xf86-video-ati git://anongit.freedesktop.org/git/xorg/driver/xf86-video-ati "--prefix=$PREFIX --enable-gallium-radeon --with-egl-platforms=x11,drm --enable-glamor"

sudo sh -c "echo LIBGL_DRIVERS_PATH=$PREFIX/lib/dri/ >>/etc/environment"
sudo sh -c "echo $PREFIX/lib >/etc/ld.so.conf.d/a-local-xorg.conf"
sudo ldconfig


sudo cp /usr/lib/xorg/protocol.txt $PREFIX/lib/xorg/protocol.txt
sudo sh -c "cat >$PREFIX/share/X11/xorg.conf.d/10-Files" <<"_Files"
Section "Files"
        ModulePath "/opt/xorg/lib/xorg/modules"
        EndSection
_Files
sudo mkdir -p $PREFIX/share/X11/xorg.conf.d/
sudo cp /etc/X11/xorg.conf.d_/* $PREFIX/share/X11/xorg.conf.d/


popd

sudo chown root:root $PREFIX/bin/Xorg
sudo chmod +s $PREFIX/bin/Xorg
# sudo chmod 1777 /opt/xorg/var/log

echo "If eveything built, change your X server command (e.g. ServerCmd in /etc/kde4/kdm/kdmrc) to"
echo "$PREFIX/bin/X -verbose 9 -logverbose 9 -configdir $PREFIX/share/X11/xorg.conf.d"