03-21-2012, 10:54 AM

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)

03-21-2012, 03:12 PM

Linker errors are usually associated with not being able to connect to the correct library, so check you
have included or imported the necessary framework or library.

sorry I can't be more help.

Regards Mark

03-22-2012, 12:32 PM

Thanks for the reply. I think the error may be due to using code originally written for FLTK version 1.1, whereas I am trying to run that code with FLTK 1.3...