One of the easiest methods of attaching registration numbers to side of inflatable dinghy; is to affix registration sticker and numbers on rectangular plastic board, such as cut from FOR SALE sign for example. Drill or cut holes in corners of that board, and hang it over the side of the inflatable boat, as near to the bow as possible. Use plastic cable ties to attach board to safety grab rope. USCG regulations state that the vessels registration numbers must be visible at all time (not permanently attached). Another option is to use stencil, sold in Home Depot or Office Max, along with permanent black marker to print registration number through stencil. Most elegant option is to order registration numbers to be printed by
Note in this example, the linker would tell you it couldn't find draw() , when in reality you know it obviously is being exported by the library. You could spend hours scratching your head wondering what went wrong. The thing is, the linker sees a different signature because the parameter types are slightly different. In the example, vec3 is a different type in both projects as far as the compiler is concerned. This could happen because they come from two slightly different include files (maybe the include files come from two different versions of the library).