2

Hi, I am using Xcode 4 and trying to set up FLTK 1.3.0 to run Bjarne Stroustrup's Chapter 12 FLTK Demo at the end of the chapter. I keep getting the following error when compiling, and have no idea where to go. I have an idea it might have to do with the linker flags, but I don't know what flag to add and where...

Here's the error:

Undefined symbols for architecture x86_64: "Fl_JPEG_Image::Fl_JPEG_Image(char const*)", referenced from: Graph_lib::Image::Image(Point, String, Graph_lib::Suffix::Encoding) in Graph.o "Fl_GIF_Image::Fl_GIF_Image(char const*)", referenced from: Graph_lib::Image::Image(Point, String, Graph_lib::Suffix::Encoding) in Graph.o ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation)

bubbagump00
  • 21
  • 2

2 Answers2

3

Are you passing the linker flags present with --use-images? try:

> fltk-config --use-images --ldflags

and check the results to make sure you're getting either the system image libs, or the ones optionally built with fltk.

Brett Hale
  • 21,653
  • 2
  • 61
  • 90
2

I also found this to be quite useful:

fltk-config --compile test.cpp

It worked perfectly for me. For more examples of using fltk-config check out http://www.fltk.org/doc-1.1/basics.html

SteVwonder
  • 175
  • 1
  • 1
  • 8