printerpart=0;//default value for the constant printerpart, it can be changed through command line using -D
//https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Using_OpenSCAD_in_a_command_line_environment
//use compile.sh to generate the stl files in stl/ subdirectory
type=printerpart;  //assign the constant value to a variable to be able to test it, even if the constant hasn't been defined in command line
//pour visualisation de l'assemblage
translate([-22.5, -30, -2]){
  difference(){
    cube([16, 12, 2], center = true);
    echo("Je suis passé par ici");
    echo(type);
    if (type!=0){
      translate([7, -1, 0])   scale(0.5,0.5,0.5)  rotate(180,[0,1,0])
         linear_extrude(height = 3.5) {      #text( type, font = "Liberation Sans");
    }
  }
}