#!/bin/sh
set -e
. ./conf.sh
umask 022

mkdir -p $target_sysroot/bin
mkdir -p $target_sysroot/lib64

echo '**************************************************************************'
echo 'You have to cross/compile a linux kernel (optionally prepare an'
echo "initramfs) which will boot $target_sysroot partition as the root"
echo 'partition.'
echo 'To do that you will need to configure/setup the/a bootloader for'
echo 'this linux kernel to boot on this partition.'
echo 'nyanlinux does include the tools required to setup a boot entry in UEFI'
echo 'bios to do that. Those tools should be available on most of the'
echo 'gnu/linux distros out there, then the one of your chosing.'  
echo 'You have many sources of information on the web to help you do that from'
echo 'the boostrap gnu/linux distro of your choosing.'
printf '**************************************************************************\n\n'

#-------------------------------------------------------------------------------
# The x86_86 ABI dynamic loader has the libc and related basic libs location
# hardcoded, then it will find them.
# We did enable dash shell earlier.
# Use an hardcoded path for the linux loader
ln -sTf /lib64 $target_sysroot/nyan/glibc/current/lib/x86_64
# glibc pthread_cancel wants gcc libgcc_s
ln -sTf 0 $target_sysroot/nyan/toolchains/current
ln -sTf /nyan/toolchains/current/lib64/libgcc_s.so.1 $target_sysroot/nyan/glibc/current/lib/libgcc_s.so.1
#-------------------------------------------------------------------------------

#-------------------------------------------------------------------------------
# Enable the init process which linux will start as the first process
# usually it's /bin/init.
echo '**************************************************************************'
echo 'the init process will run /bin/sysstart binary/script to initialize the'
echo 'basics of a gnu/linux distro. A basic script is setup in nyanlinux'
echo 'distribution (in files/sysstart.boostrap")'
printf '**************************************************************************\n\n'
ln -sTf 0 $target_sysroot/nyan/muinit/current
ln -sTf /nyan/muinit/current/bin/init $target_sysroot/bin/init
cp -n ./files/sysstart.bootstrap $target_sysroot/bin/sysstart
#-------------------------------------------------------------------------------

echo '**************************************************************************'
echo '/bin/sysstart script/binary may require much more to be enabled. You '
echo 'would need to add them yourself, because your minimum required would not'
echo 'be _my_ minimum required' 
printf '**************************************************************************\n\n'

#-------------------------------------------------------------------------------
ln -sTf 0 $target_sysroot/nyan/util-linux/current
ln -sTf 0 $target_sysroot/nyan/coreutils/current
ln -sTf 0 $target_sysroot/nyan/nyankmod/current
ln -sTf 0 $target_sysroot/nyan/mudev/current
ln -sTf 0 $target_sysroot/nyan/iproute2/current
ln -sTf 0 $target_sysroot/nyan/strace/current
ln -sTf 0 $target_sysroot/nyan/xserver/current
ln -sTf 0 $target_sysroot/nyan/xkbcomp/current
ln -sTf 0 $target_sysroot/nyan/xkeyboard-config/current
ln -sTf 0 $target_sysroot/nyan/xf86-video-amdgpu/current
ln -sTf 0 $target_sysroot/nyan/xf86-input-evdev/current
ln -sTf 0 $target_sysroot/nyan/drm/current
ln -sTf 0 $target_sysroot/nyan/freetype/current
ln -sTf 0 $target_sysroot/nyan/libepoxy/current
ln -sTf 0 $target_sysroot/nyan/libfontenc/current
ln -sTf 0 $target_sysroot/nyan/libICE/current
ln -sTf 0 $target_sysroot/nyan/libpng/current
ln -sTf 0 $target_sysroot/nyan/libSM/current
ln -sTf 0 $target_sysroot/nyan/libtxc_dxtn/current
ln -sTf 0 $target_sysroot/nyan/libX11/current
ln -sTf 0 $target_sysroot/nyan/libXau/current
ln -sTf 0 $target_sysroot/nyan/libxcb/current
ln -sTf 0 $target_sysroot/nyan/libXcomposite/current
ln -sTf 0 $target_sysroot/nyan/libXcursor/current
ln -sTf 0 $target_sysroot/nyan/libXdamage/current
ln -sTf 0 $target_sysroot/nyan/libXdmcp/current
ln -sTf 0 $target_sysroot/nyan/libXext/current
ln -sTf 0 $target_sysroot/nyan/libXfixes/current
ln -sTf 0 $target_sysroot/nyan/libXfont2/current
ln -sTf 0 $target_sysroot/nyan/libXft/current
ln -sTf 0 $target_sysroot/nyan/libXi/current
ln -sTf 0 $target_sysroot/nyan/libXinerama/current
ln -sTf 0 $target_sysroot/nyan/libxkbfile/current
ln -sTf 0 $target_sysroot/nyan/libXrandr/current
ln -sTf 0 $target_sysroot/nyan/libXrender/current
ln -sTf 0 $target_sysroot/nyan/libXScrnSaver/current
ln -sTf 0 $target_sysroot/nyan/libxshmfence/current
ln -sTf 0 $target_sysroot/nyan/libXt/current
ln -sTf 0 $target_sysroot/nyan/libXv/current
ln -sTf 0 $target_sysroot/nyan/libXxf86vm/current
ln -sTf 0 $target_sysroot/nyan/mesa-gl/current
ln -sTf 0 $target_sysroot/nyan/pixman/current
ln -sTf 0 $target_sysroot/nyan/Vulkan-LoaderAndValidationLayers/current
ln -sTf 0 $target_sysroot/nyan/font-util/current
ln -sTf 0 $target_sysroot/nyan/fontconfig/current
ln -sTf 0 $target_sysroot/nyan/dejavu-fonts-ttf/current
ln -sTf 0 $target_sysroot/nyan/st/current
ln -sTf 0 $target_sysroot/nyan/ncurses/current
ln -sTf 0 $target_sysroot/nyan/dhcp/current
ln -sTf 0 $target_sysroot/nyan/ndisc6/current
#-------------------------------------------------------------------------------

#===============================================================================
# Xorg shared file system
#-------------------------------------------------------------------------------
# xorg modules 
mkdir -p $target_sysroot/lib64/xorg/modules
ln -sTf /nyan/xserver/current/lib64/xorg/modules/libexa.so		$target_sysroot/lib64/xorg/modules/libexa.so
ln -sTf /nyan/xserver/current/lib64/xorg/modules/libfbdevhw.so		$target_sysroot/lib64/xorg/modules/libfbdevhw.so
ln -sTf /nyan/xserver/current/lib64/xorg/modules/libfb.so		$target_sysroot/lib64/xorg/modules/libfb.so
ln -sTf /nyan/xserver/current/lib64/xorg/modules/libglamoregl.so	$target_sysroot/lib64/xorg/modules/libglamoregl.so
ln -sTf /nyan/xserver/current/lib64/xorg/modules/libint10.so 		$target_sysroot/lib64/xorg/modules/libint10.so
ln -sTf /nyan/xserver/current/lib64/xorg/modules/libshadowfb.so		$target_sysroot/lib64/xorg/modules/libshadowfb.so
ln -sTf /nyan/xserver/current/lib64/xorg/modules/libshadow.so		$target_sysroot/lib64/xorg/modules/libshadow.so
ln -sTf /nyan/xserver/current/lib64/xorg/modules/libvbe.so		$target_sysroot/lib64/xorg/modules/libvbe.so
ln -sTf /nyan/xserver/current/lib64/xorg/modules/libvgahw.so		$target_sysroot/lib64/xorg/modules/libvgahw.so
ln -sTf /nyan/xserver/current/lib64/xorg/modules/libwfb.so		$target_sysroot/lib64/xorg/modules/libwfb.so
#-------------------------------------------------------------------------------
# xorg extensions
mkdir -p $target_sysroot/lib64/xorg/modules/extensions
ln -sTf /nyan/xserver/current/lib64/xorg/modules/extensions/libglx.so $target_sysroot/lib64/xorg/modules/extensions/libglx.so
#-------------------------------------------------------------------------------
# xorg internal modesetting driver
mkdir -p $target_sysroot/lib64/xorg/modules/drivers
ln -sTf /nyan/xserver/current/lib64/xorg/modules/drivers/modesetting_drv.so $target_sysroot/lib64/xorg/modules/drivers/modesetting_drv.so
#-------------------------------------------------------------------------------
# configuration database
mkdir -p $target_sysroot/share/X11/xorg.conf.d
ln -sTf /nyan/xserver/current/share/X11/xorg.conf.d/10-quirks.conf $target_sysroot/share/X11/xorg.conf.d/10-quirks.conf
#-------------------------------------------------------------------------------
# xkb database
mkdir -p $target_sysroot/share/X11
ln -sTf /nyan/xkeyboard-config/current/share/X11/xkb $target_sysroot/share/X11/xkb
#===============================================================================

#===============================================================================
# AMD GPU Xorg driver
#-------------------------------------------------------------------------------
# module
mkdir -p $target_sysroot/lib64/xorg/modules/drivers
ln -sTf /nyan/xf86-video-amdgpu/current/lib/xorg/modules/drivers/amdgpu_drv.so $target_sysroot/lib64/xorg/modules/drivers/amdgpu_drv.so
#-------------------------------------------------------------------------------
# configuration database
mkdir -p $target_sysroot/share/X11/xorg.conf.d
ln -sTf /nyan/xf86-video-amdgpu/current/share/X11/xorg.conf.d/10-amdgpu.conf $target_sysroot/share/X11/xorg.conf.d/10-amdgpu.conf
#===============================================================================

#===============================================================================
# linux evdev Xorg input driver
#-------------------------------------------------------------------------------
# module
mkdir -p $target_sysroot/lib64/xorg/modules/input
ln -sTf /nyan/xf86-input-evdev/current/lib/xorg/modules/input/evdev_drv.so $target_sysroot/lib64/xorg/modules/input/evdev_drv.so
#-------------------------------------------------------------------------------
# configuration database
mkdir -p $target_sysroot/share/X11/xorg.conf.d
ln -sTf /nyan/xf86-input-evdev/current/share/X11/xorg.conf.d/10-evdev.conf $target_sysroot/share/X11/xorg.conf.d/10-evdev.conf
#===============================================================================

#===============================================================================
# Xorg font-util data
mkdir -p $target_sysroot/share/fonts
ln -sTf /nyan/font-util/current/share/fonts/X11 $target_sysroot/share/fonts/X11
#===============================================================================

#===============================================================================
# fontconfig
# install the shared configuration (just copy the symlinks)
mkdir -p $target_sysroot/etc/fonts/conf.d
ln -sTf /nyan/fontconfig/current/etc/fonts/fonts.conf $target_sysroot/etc/fonts/fonts.conf
cp -Pf $target_sysroot/nyan/fontconfig/current/etc/fonts/conf.d/* $target_sysroot/etc/fonts/conf.d
#===============================================================================

#===============================================================================
# dejavu ttf fonts
#-------------------------------------------------------------------------------
# fontconfig shared configuration
ln -sTf /nyan/dejavu-fonts-ttf/current/share/fontconfig/conf.avail/20-unhint-small-dejavu-sans.conf		$target_sysroot/etc/fonts/conf.d/20-unhint-small-dejavu-sans.conf
ln -sTf /nyan/dejavu-fonts-ttf/current/share/fontconfig/conf.avail/20-unhint-small-dejavu-sans-mono.conf	$target_sysroot/etc/fonts/conf.d/20-unhint-small-dejavu-sans-mono.conf
ln -sTf /nyan/dejavu-fonts-ttf/current/share/fontconfig/conf.avail/20-unhint-small-dejavu-serif.conf		$target_sysroot/etc/fonts/conf.d/20-unhint-small-dejavu-serif.conf
ln -sTf /nyan/dejavu-fonts-ttf/current/share/fontconfig/conf.avail/57-dejavu-sans.conf				$target_sysroot/etc/fonts/conf.d/57-dejavu-sans.conf
ln -sTf /nyan/dejavu-fonts-ttf/current/share/fontconfig/conf.avail/57-dejavu-sans-mono.conf			$target_sysroot/etc/fonts/conf.d/57-dejavu-sans-mono.conf
ln -sTf /nyan/dejavu-fonts-ttf/current/share/fontconfig/conf.avail/57-dejavu-serif.conf				$target_sysroot/etc/fonts/conf.d/57-dejavu-serif.conf
#-------------------------------------------------------------------------------
# ttf files (fontconfig parses recursively /share/fonts)
mkdir -p $target_sysroot/share/fonts
ln -sTf /nyan/dejavu-fonts-ttf/current/share/fonts/dejavu $target_sysroot/share/fonts/dejavu
#===============================================================================

#-------------------------------------------------------------------------------
# the distribution identification
cp -f ./files/lsb-release $target_sysroot/etc
#-------------------------------------------------------------------------------

#-------------------------------------------------------------------------------
echo '**************************************************************************'
echo 'install basic dash shell configuration file for the root user, if none
echo 'exist, and make dash the main shell, /bin/sh, because it's a runtime'
echo 'dependencies of some software components'
printf '**************************************************************************\n\n'
cp -n ./files/dash.root.profile $target_sysroot/root/.profile
cp -n ./files/dash.root.interactive $target_sysroot/root/.dash.sh
ln -sTf /nyan/dash/current/bin/dash $target_sysroot/bin/sh
#-------------------------------------------------------------------------------