# --- T2-COPYRIGHT-NOTE-BEGIN ---
# T2 SDE: package/*/rtai/pkg_linux_post.conf
# Copyright (C) 2007 - 2023 The T2 SDE Project
# 
# This Copyright note is generated by scripts/Create-CopyPatch,
# more information can be found in the files COPYING and README.
# 
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2.
# --- T2-COPYRIGHT-NOTE-END ---

# TODO:
# patch procedure should be more flexible to support different architectures
# and kernel versions

# This function extracts RTAI and patches Linux kernel
# TODO: patch can be optimised to extract only the needed patch files
# 	 and not the whole RTAI package
patch_linux() {
    echo '------------------------------------'
    echo 'Applying RTAI patch'
    echo $(pwd)
    echo '------------------------------------'
    tar $taropt `match_source_file -p rtai rtai` -C ../

# TODO: Need to figure out the way to make RTAI patching automatically
    # Applying Linux patch
    patch -p1 < ../rtai-3.6/base/arch/i386/patches/hal-linux-2.6.23-i386-1.12-00.patch
}

cp_linux_sources() {
    if [ $SDECFG_PKG_LINUX_KEEP_BUILDSRC = 1 ]; then
    echo "Copying compiled kernel with source ..."
    rm -rf $root/usr/src/linux-${lx_kernelrelease}-build
    mkdir -p $root/usr/src/linux-${lx_kernelrelease}-build
    cp -ar . $root/usr/src/linux-${lx_kernelrelease}-build
}

make_rtai() {
    echo '--------------------------------------------'
    echo 'Entering make_rtai function from rtai package'
    echo '--------------------------------------------'

#TODO: remove hardlinks
    pushd ../rtai-3.6
    cp $base/package/*/rtai/.rtai_config ./.rtai_config

var_append instopt ' ' "DESTDIR=$root/"
prefix="/$prefix/realtime/"

# Do I really need to specify options myself?
# Maybe T2 could handle it automatically?!
#DK    confopt=""
#	var_append confopt ' ' "--datadir=$root"
#	var_append confopt ' ' "--prefix=$root/$prefix/realtime"
#	var_append confopt ' ' "--prefix=/$prefix/realtime"
#	var_append confopt ' ' "--with-rtai-dir=$root/usr/include"
var_append confopt ' ' "--with-linux-dir=$kerneldir"
#DK    var_append confopt ' ' "--build=$arch_build"
#DK    var_append confopt ' ' "--host=$arch_target"

    eval_config_command $confopt
    eval $MAKE
    eval $MAKE DESTDIR=$root install
#   eval $MAKE install
    popd
 
# Let's set RTAI path so that we can run comedi scripts out of the box
    echo '$PATH="/usr/realtime/bin:$PATH"' > $root/etc/profile.d/rtai
}

# TODO:
# The function below should only be enabled when comedi-driver package selected
# to be compiled with RTAI support
make_rtai_with_comedi() {
    echo '--------------------------------------------'
    echo 'Entering make_rtai_with_comedi function'
    echo '--------------------------------------------'

    #TODO: remove hardlink
    pushd ../rtai-3.6
# Now rtai_config will be copied to the RTAI source dir from T2 "rtai" target
    cp $base/package/*/rtai/.rtai_config_comedi ./.rtai_config

# Do I really need to specify options myself?
# Maybe T2 could handle it automatically?!
#DK    confopt=""
#   var_append confopt ' ' "--prefix=/$prefix/realtime"
    var_append confopt ' ' "--prefix=/$prefix/realtime"
    var_append confopt ' ' "--with-linux-dir=$kerneldir"
#   var_append confopt ' ' "--with-module-dir=$root/lib/modules/"
    var_append confopt ' ' "--build=$arch_build"
    var_append confopt ' ' "--host=$arch_target"
    var_append confopt ' ' "--enable-comedi-lxrt"
#DK	var_append confopt ' ' "--with-comedi=/$prefix"
#DK	var_append confopt ' ' "--with-comedi=$root/usr"
    eval_config_command $confopt
    eval $MAKE
#   eval $MAKE install DESTDIR=$root
    eval $MAKE install
popd
}

# patch Linux with RTAI patch.
hook_add postpatch 1 patch_linux

#hook_add inmake 2 cp_linux_sources

# This function is substituted by rtai.conf.
#hook_add postmake 2 make_rtai

# This function will be substituted with rtai_post.conf function
#hook_add postmake 4 make_rtai_with_comedi