install

function exists() {
    if ! command -v $1 &> /dev/null
    then
        # failure
        return 1
    else
        # success
        return 0
    fi
}

function cecho() {
    printf "\n\033[91m$1\033[0m\n"
    printf "\033[92m--------------------------------------------\033[0m\n"
}

if  exists g++;
then
    CPP=g++;
    cecho "Using compiler g++"
else
    if exists clang++;
    then
        cecho "Using compiler clang++"
        CPP=clang++
    else
        cecho "No Compiler found, installing g++"
        sudo apt-get update -y
        sudo apt-get install -y g++
        CPP=g++
    fi
fi    

cecho "Running apt-get update"
sudo apt-get update  -y
cecho "Installing SFML libraries"
sudo apt-get install -y libsfml-dev        # SFML
cecho "Installing Glew libraries"
sudo apt-get install -y libglew-dev        # glew.h
cecho "Installing OpenCL libraries"
sudo apt-get install -y ocl-icd-opencl-dev # OpenCL

cecho "Making build directory"
mkdir build

# Compile Mandelbrot (OpenGL)
cecho "Compiling gl_mandel.out (that uses OpenGL)"
$CPP -std=c++17 -c -O3 gl_mandel.cpp  && 
    $CPP gl_mandel.o -o gl_mandel.out -lsfml-graphics -lsfml-window -lsfml-system -lGL -lGLEW && 
        rm gl_mandel.o && 
                mv gl_mandel.out build

# Compile Mandelbrot (OpenCL)
cecho "Compiling cl_mandel.out (that uses OpenCL and OpenGL)"
$CPP -std=c++17 -c -O3 cl_mandel.cpp &&
    $CPP cl_mandel.o -o cl_mandel.out -lsfml-graphics -lsfml-window -lsfml-system -lsfml-audio -lsfml-network -lOpenCL -lGL  &&
        rm cl_mandel.o && 
                mv cl_mandel.out build/

# Compile Newton (Software rendering)
cecho "Compiling newton_software.out (that uses software rendering with SFML's OpenGL context)"
$CPP -std=c++17 -c -O3 newton_software.cpp &&
    $CPP newton_software.o -o software_newton.out -lsfml-graphics -lsfml-window -lsfml-system -lsfml-audio -lsfml-network &&
        rm newton_software.o &&
                mv software_newton.out build/