Installing Quartus Lite 20.1 on Ubuntu 20.04

@RichardTanSY_Altera

I have attached attached the vsim file below which is quite different from the previous versions of Modelsim. For example this `vco="linux_rh60" ` no longer exist in the current ModelSim version.

@RichardTanSY_Altera

mode=${MTI_VCO_MODE:-"32"}

arg0="$0"
cmd=`basename "$arg0"`

uname=`uname`
utype=`uname -r`
umach=`uname -m`

case $uname in
AIX)
islink=-L
;;
CYGWIN_NT* | MSYS_NT*)
islink=-h
;;
Win*)
uname=CYGWIN_NT
islink=-h
;;
*)
islink=-h
;;
esac

while [ $islink "$arg0" ] ; do
x=`/bin/ls -ld "$arg0"`
x=`expr "$x" : '.* \(.*\)'`
case "$x" in
/*) arg0="$x" ;;
*) arg0="`dirname ""$arg0""`/$x" ;;
esac
done

dir=`dirname "$arg0"`
#added
export LD_LIBRARY_PATH=${dir}/lib32

vco=${uname}${utype}
case $vco in
Linux*)
# On Linux, default to 32 bit unless MTI_VCO_MODE is set
# except for Visualizer where we invoke 64-bit version by default
if [ "$mode" = "" ] ; then
if ( [ "$cmd" = "visualizer" -o "$cmd" = "vis" ]) \
&& ( [ -x "$dir/linux_x86_64/visualizer" ] ) ; then
mode="64";
elif ( [ -x "$dir/linux/vsim" -o -x "$dir/linuxpe/vsim" ] ) \
&& ( [ "$umach" != "aarch64" ] ); then
mode="32";
fi
fi

# If IA-64 or X86-64 architecture and machine-specific vsim is not
# installed but linux vsim is available, use linux platform.
# Otherwise use machine-specific platform.
#
if [ "$mode" != "32" ] \
&& ( [ "$umach" = "ia64" ] \
|| [ "$umach" = "x86_64" ] \
|| [ "$umach" = "aarch64" ] ) \
&& ( [ "$mode" = "64" ] \
|| [ -x "$dir/linux_$umach/vsim" ] \
|| [ ! -x "$dir/linux/vsim" ] ) ; then
vco="linux_$umach"
else
vco="linux"
if [ ! -x "$dir/$vco/vsim" -a -x "$dir/linuxpe/vsim" ]; then
vco="linuxpe"
fi
fi
;;
CYGWIN_NT* | MSYS_NT*)
if [ -x "$dir/win32/vsim" ]; then
vco="win32"
elif [ -x "$dir/win32pe/vsim" ]; then
vco="win32pe"
fi
if [ "$mode" = "" ] ||
[ "$mode" = "64" ] ; then
sysostype="`systeminfo 2>&1 | grep -i 'System Type' | cut -f1 -d- | sed s@x@X@ | cut -f2 -dX`"
if [ "$sysostype" == "64" ] ; then
vco="win64"
fi
fi
;;
*)
vco="unknown"
;;
esac

doatenv=0

case $cmd in
qhdir)
cmd=vdir
;;
qhmap)
cmd=vmap
;;
qvlcom)
cmd=vlog
;;
qhlib)
cmd=vlib
;;
qhsim)
cmd=vsim
;;
qhdel)
cmd=vdel
;;
qhmake)
cmd=vmake
;;
qvhcom)
cmd=vcom
;;
qhgencomp)
cmd=vgencomp
;;
vco)
echo $vco
exit
;;
hdloffice)
doatenv=1
;;
hdlstudio)
doatenv=1
;;
esac

# verify that we can find the command to execute.
if [ -x "$dir/$vco/$cmd" ] ; then
arg0="$dir/$vco/$cmd"
else
# if bin nolonger has symbolic links in it then
# we need to look up and over
f2="$dir/$vco/$cmd"
if [ -x "$f2" ] ; then
arg0="$f2"
elif [ -x "$dir/${vco}pe/$cmd" ] ; then
arg0="$dir/${vco}pe/$cmd"
elif [ -x "$dir/${vco}le/$cmd" ] ; then
arg0="$dir/${vco}le/$cmd"
else
# Last ditch effort. Use original arg0 and try it!
d2=`dirname "$0"`
f2="$d2/$vco/$cmd"
if [ -x $f2 ] ; then
arg0=$f2
else
echo "Error: cannot find \"$dir/$vco/$cmd\""
exit 1
fi
fi
fi

if [ $doatenv ]; then
if [ -x "$dir/$vco/athdlenv" ] ; then
#. $dir/$vco/athdlenv
if [ -z "$LD_LIBRARY_PATH" ]; then
export LD_LIBRARY_PATH="$dir/$vco"
else
export LD_LIBRARY_PATH="$dir/$vco:$LD_LIBRARY_PATH"
fi
#echo LD_LIBRARY_PATH=$LD_LIBRARY_PATH
fi
fi
if [ -z "$*" ] ; then
exec "$arg0"
else
exec "$arg0" "$@"