error in build step

[Jan Iversen]

> On 29 Jan 2017, at 12:20, 김광연 <hemool123 at naver.com> wrote:
> 
> If you installed Graphviz/dot after a previous failing run, 
> try deleting the output directory and rerun doxygen.

These lines say it all. Seems you have a broken oxygen installation, you can either solve that or add
—disable-doxygen

to your autogen.input.

rgds
jan I.
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