linker error in c

Question

how can i resolve a linker error in c?

this is the error message:

undefined reference to HPDF_Page_SetRGBStroke

Answer 1

If you are using an external library, you have to tell the linker that it should be included. It has no means of automagically finding out what you're using there.

Using gcc you can do this by compiling the program with -l library .

Answer 2

Apparently, you're trying to use a routine from the libharu PDF library, and it seems you're not linking against this library.

How exactly you would resolve this depends on the toolchain you're using -- under gcc, you would have to add a -lharu option or similar to the linker options.