#!/bin/bash -e

# last updated 2023-03-24 by mza

# when trying it on ubuntu 20.04:
# E: Unable to locate package libusb-1.0
# E: Unable to locate package libtcl8.5
# E: Package 'tcl8.5' has no installation candidate

# might need a newer automake than your package system can install:
#wget https://ftp.gnu.org/gnu/automake/automake-1.14.tar.gz --no-check-certificate

declare build="${HOME}/build"
declare openocd="${HOME}/build/openocd"
patchfile="$build/openocd-patch2.tar.bz2"

tag="v0.11.0"

# recommendations on the following 4 functions are from https://github.com/riscv-software-src/riscv-tools/issues/173#issuecomment-864471035

function libtool {
	cd $build
	echo; echo "libtool"
	git clone git://git.savannah.gnu.org/libtool.git
	cd libtool
	./bootstrap
	#./configure --prefix ~/.local/
	./configure
	make -j4
	sudo make install
}

function automake {
	cd $build
	echo; echo "automake"
	git clone git://git.savannah.gnu.org/automake.git
	cd automake
	git checkout v1.16.3
	./bootstrap
	#./configure --prefix ~/.local/
	./configure
	make -j4
	sudo make install
}

function autoconf {
	cd $build
	echo; echo "autoconf"
	git clone https://git.savannah.gnu.org/git/autoconf.git
	cd autoconf
	git checkout v2.72b
	autoreconf -vi
	./configure
	make -j4
	sudo make install
}

function pkgconfig {
	cd $build
	echo; echo "pkg-config"
	git clone https://gitlab.freedesktop.org/pkg-config/pkg-config.git
	cd pkg-config
	git checkout pkg-config-0.29.2
	NOCONFIGURE=1 ./autogen.sh
	#./configure --prefix ~/.local/
	./configure
	make -j4
	sudo make install
}

function install_prerequisites_apt {
	sudo nice apt -y install build-essential libusb-1.0-0 libusb-1.0-0-dev libtcl8.6 tcl8.6 make gcc clang texinfo libftdi1 git pkg-config
	# must choose here to build from source or not...
	if [ $build_libtool_autoconf_automake_from_source -gt 0 ]; then
		sudo nice apt -y erase libtool autoconf automake
		libtool
		automake
		autoconf
		#pkgconfig
	else
		sudo nice apt -y install libtool autoconf automake
	fi
}

function install_prerequisites_yum {
	sudo nice yum -y update
	sudo nice yum -y upgrade
	sudo nice yum -y install make gcc clang texinfo libusb libusb-devel libusb1 libusb1-devel libusbx libusbx-devel tcl-devel tcl libftdi wget pkgconfig
	# must choose here to build from source or not...
	sudo nice yum -y remove libtool autoconf automake
	libtool
	automake
	autoconf
	#pkgconfig
	#sudo nice yum -y install openocd # version is Open On-Chip Debugger 0.5.0 (2011-12-19-21:28) in SL6.10
	#sudo nice yum -y install openocd # version is Open On-Chip Debugger 0.8.0 (2014-04-29-12:22) in SL7.3 and SL7.5
	# for openocd-0.10.0 release tarball under redhat distros:
	# libusb-devel 0.1 needed to build ARM-OLIMEX-JTAG driver
	# libusb1-devel needed for SL6.10
	# libusbx-devel needed for SL7.5
	# ~2018 git version needs automake>=1.14 and SL7.3 only has 1.13 (SL7.6 has 1.13 also, grumble)
}

function install_prerequisites_pac {
	sudo pacman --needed --noconfirm -Syu
	sudo pacman --needed --noconfirm -S libtool autoconf automake make gcc clang texinfo libusb tcl pkgconfig libftdi wget
}

mkdir -p $build

declare -i redhat=0 SL6=0 SL7=0 deb=0
if [ -e /etc/redhat-release ]; then
	redhat=1
	set +e
	SL6=$(grep -c "Scientific Linux release 6" /etc/redhat-release)
	SL7=$(grep -c "Scientific Linux release 7" /etc/redhat-release)
	set -e
elif [ -e /etc/debian_version ]; then
	deb=1
elif [ -e /etc/arch-release ]; then
	arch=1
else
	echo "what kind of linux is this?"
	exit 1
fi
if [ $deb -gt 0 ]; then
	install_prerequisites_apt
elif [ $redhat -gt 0 ]; then
	install_prerequisites_yum
elif [ $arch -gt 0 ]; then
	install_prerequisites_pac
fi

if [ -e $openocd ]; then
	cd $openocd
	echo "git pull..."
	git pull || /bin/true
	git checkout "$tag"
	if [ $redhat -gt 0 ]; then
		if [ -e "$patchfile" ]; then
			find -exec touch --date="2018-11-28" {} + # must be older than the datestamps in the patch file below
			tar xjf "$patchfile"
		fi
	fi
	if [ ! -e "configure" ]; then
		#export ACLOCAL="/usr/share/aclocal"
		nice ./bootstrap
	fi
else
	cd $build
	#if [ ! -e "openocd-0.10.0.tar.bz2" ]; then
	#	wget https://superb-sea2.dl.sourceforge.net/project/openocd/openocd/0.10.0/openocd-0.10.0.tar.bz2
	#fi
	#tar xjf openocd-0.10.0.tar.bz2
	#mv openocd-0.10.0 openocd
	echo "git clone..."
	#git clone git://git.code.sf.net/p/openocd/code openocd
	git clone https://github.com/mzandrew/openocd.git
	#tar xf openocd-from-git-repo.tar
	cd $openocd
	git checkout "$tag"
	if [ $redhat -gt 0 ]; then
		#find -type f -exec touch --reference=$build/openocd-patch2.tar.bz2 {} +
		if [ -e "$patchfile" ]; then
			find -exec touch --date="2018-11-28" {} + # must be older than the datestamps in the patch file below
			tar xjf "$patchfile"
		fi
		git submodule init
		git submodule update
	else
		#export ACLOCAL="/usr/share/aclocal"
		nice ./bootstrap
	fi
	if [ ! -e "configure" ]; then
		#export ACLOCAL="/usr/share/aclocal"
		nice ./bootstrap
	fi
fi

declare PREFIX="/usr"

cd $openocd
#export USB_LIBS="-L/usr/lib/x86_64-linux-gnu -lusb-1.0"
#nice make distclean
declare options="--enable-ftdi --enable-ft232r"
options="$options --enable-buspirate --enable-bcm2835gpio --enable-sysfsgpio"
options="$options --disable-armjtagew"
options="$options --disable-dummy --disable-stlink --disable-ti-icdi --disable-ulink --disable-usb-blaster-2 --disable-vsllink --disable-xds110 --disable-osbdm --disable-opendous --disable-aice --disable-usbprog --disable-rlink --disable-cmsis-dap --disable-kitprog --disable-usb-blaster --disable-presto --disable-openjtag --disable-jlink --disable-parport --disable-parport-ppdev --disable-parport-giveio --disable-jtag_vpi --disable-amtjtagaccel --disable-zy1000-master --disable-zy1000 --disable-ioutil --disable-imx_gpio --disable-ep93xx --disable-at91rm9200 --disable-gw16012 --disable-oocd_trace --disable-xlnx-pcie-xvc --disable-minidriver-dummy"
options="$options --disable-werror"
# --enable-armjtagew (needs libusb-0.1)
#if [ $arch -gt 0 ]; then
#else
#fi
nice ./configure --prefix=$PREFIX $options

nice make
sudo nice make install

declare file="644" dir="755"
sudo find $PREFIX/share/openocd -type f -exec chmod --changes $file {} + -o -type d -exec chmod --changes $dir {} +
sudo cp -a $PREFIX/share/openocd/contrib/60-openocd.rules /etc/udev/rules.d/
sudo sed -i "s/^\(ftdi_device_desc.*\)/#\1/" $PREFIX/share/openocd/scripts/interface/ftdi/digilent-hs2.cfg

ls -lart $PREFIX/bin/openocd $PREFIX/share/openocd /etc/udev/rules.d/60-openocd.rules