modelsim_fix_ubuntu-22.04.sh

#!/usr/bin/env bash

# Installation and fix script for ModelSim 16.1 on Ubuntu 22.04
# Author: Patrick Pedersen <ctx.xda@gmail.com>
# Date: 2023-01-17

# NOTE: This script has been developed for- and tested on Ubuntu 22.04
#       It may or may not work on other distributions

# Usage:
# $ sudo ./modelsim_fix_ubuntu-22.04.sh [install|fix]
# install - Downloads ModelSim 16.1 and launches the installer
# fix - Fixes a ModelSim 16.1 installation (assuming it is in $HOME/intelFPGA*)
#
# Ensure ModelSim is installed (using the install option) before fixing it!

shopt -s extglob

USR=$(who am i | awk '{print $1}')
HOME_DIR=$(getent passwd $USR | cut -d: -f6)
INTEL_FPGA_DIR=$(echo $HOME_DIR/intelFPGA*/*.*) # intelFPGA* because it may also be ending with _pro
MODELSIM_DIR=$INTEL_FPGA_DIR/modelsim_ase

DEPS_64=build-essential

DEPS_32=" \
    gcc-multilib \
    g++-multilib \
    libc6:i386 \
    libncurses5:i386 \
    libstdc++6:i386 \
    libxft2:i386 \
    libxtst6:i386 \
    lib32stdc++6 \
    lib32gcc-s1 \
    expat:i386 \
    fontconfig:i386 \
    libfreetype6:i386 \
    libexpat1:i386 \
    libgtk-3-0:i386 \
    libcanberra0:i386 \
    libpng-dev:i386 \
    libice6:i386 \
    libsm6:i386 \
    zlib1g:i386 \
    libx11-6:i386 \
    libxau6:i386 \
    libxdmcp6:i386 \
    libxext6:i386 \
    libxrender1:i386 \
    libxt6:i386 \
"

# Check if user is root
if [ "$EUID" -ne 0 ]; then
    echo "Please run as root"
    exit 1
fi

# Check if installer option is passed

function install_modelsim() {
    echo "Downloading ModelSim installer"
    cd /tmp

    if [ ! -f ModelSimSetup-16.1.0.196-linux.run ]; then
        wget https://profile.iiita.ac.in/bibhas.ghoshal/COA_2020/Lab/ModelSimSetup-16.1.0.196-linux.run
    fi

    chmod +x ModelSimSetup-16.1.0.196-linux.run
    echo "Launching ModelSim installer"
    echo "Please complete the installation wizard"
    
    #run in background
    runuser -u $USR ./ModelSimSetup-16.1.0.196-linux.run &
    cd -
}

function fix_modelsim() {
    chmod u+w $MODELSIM_DIR/vco
    if [ $? -ne 0 ]; then
        echo "Failed to make vco script writable"
        exit 1
    fi

    echo "Backing up vco script to $MODELSIM_DIR/vco.bak"
    cp $MODELSIM_DIR/vco $MODELSIM_DIR/vco.bak

    if [ $? -ne 0 ]; then
        echo "Failed to backup vco script"
        exit 1
    fi

    echo "Patching up vco script"

    # Fix vco script
    sed -i 's/linux\_rh[[:digit:]]\+/linux/g' $MODELSIM_DIR/vco
    sed -i 's/MTI_VCO_MODE:-""/MTI_VCO_MODE:-"32"/g' $MODELSIM_DIR/vco
    sed -i '/dir=`dirname "$arg0"`/a export LD_LIBRARY_PATH=${dir}/lib32' $MODELSIM_DIR/vco

    if [ $? -ne 0 ]; then
        echo "Failed to patch vco script"
        exit 1
    fi

    # Diff vco script
    echo "The following changes have been made to vco script:"
    diff $MODELSIM_DIR/vco.bak $MODELSIM_DIR/vco

    # Download the old 32-bit version of libfreetype
    echo "Downloading 32-bit version of libfreetype..."
    cd /tmp

    if [ ! -f freetype-2.4.12.tar.bz2 ]; then
        wget https://ftp.osuosl.org/pub/blfs/conglomeration/freetype/freetype-2.4.12.tar.bz2
    fi

    tar xjf freetype-2.4.12.tar.bz2

    echo "Compiling libfreetype..."
    # Compile libfreetype
    cd freetype-2.4.12/
    ./configure --build=i686-pc-linux-gnu "CFLAGS=-m32" "CXXFLAGS=-m32" "LDFLAGS=-m32"
    make clean
    make

    if [ $? -ne 0 ]; then
        echo "Failed to compile libfreetype"
        exit 1
    fi

    echo "Copying libfreetype to $MODELSIM_DIR/lib32"

    cd $MODELSIM_DIR
    mkdir -p lib32
    cp /tmp/freetype-2.4.12/objs/.libs/libfreetype.so* lib32/
    echo
    echo "ModelSim should now be fixed!"
    echo
    echo "To add ModelSim to path, add the following line to your .bashrc file:"
    echo "  export PATH=$MODELSIM_DIR/bin:\$PATH"
    echo
}

if [ $# -eq 0 ]; then
    echo "Usage: $0 [install|fix]"
    exit 1
fi

# Download necessary 32bit libs
echo "Downloading build essentials..."
apt install -y $DEPS_64

echo "Downloading necessary 32bit packages..."

dpkg --add-architecture i386
apt update
apt install -y ${DEPS_32}

if [ $? -ne 0 ]; then
    echo "Failed to install necessary 32bit libs"
    exit 1
fi

if [ "$1" == "install" ]; then
    # Check if user is root
    install_modelsim
elif [ "$1" == "fix" ]; then
    echo "Fixing ModelSim"
    fix_modelsim
fi