GraphViz: which graphics library to use?

Question

I have just started to develop a small program in C ++ using the graphics library GraphViz and noticed that there are actually three different the API: libgraph, libcgraphand libagraph. WTF?

I would like to know what is the difference between the two, which one to use and where to look for API documentation. I looked through the GraphViz documentation and mailing list archives, but I found a lot of broken links, a lot of incorrect or misleading information, and now I'm confused.

Answer 1

It looks like it should be used libcgraphwhen compiling flags set pkg-config libcgraph --cflags --libsand including #include <cgraph.h>.