Missing Declaration about libquotient HOT 6 CLOSED

I'm not sure how the build could succeed with such an error... What compiler are you using?

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In general, lookup of friend functions is a mess when it comes to namespaces, so I'm not surprised. Will look into how to better reorganise this.

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I am using gcc and used make to build it: link to complete logfile.

I want to add that I am new to packaging / building from source and while this has built successfully, I could not try it out yet since I am struggling a bit with building Quaternion using the package I built as a dependency (but that has to do with the build service at this point in time)

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Wow, GCC 7 - the toolchain is hot :)
So that is actually a warning. I think you can go with it just fine in the meantime; although, if GCC actually doesn't find this operator and uses a generic one instead, you might have slightly less friendly debug printing. In other words, you really shouldn't care. Meanwhile, I'll take a closer look at this code from C++ language perspective.
If I can help with building Quaternion, feel free to ask. I'm totally green in OBS though.

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Ok, that's definitely small and it seems to not even alter anything in the working code - the compiler just whines that it hasn't seen a declaration inside a namespace before the operator definition that implies that namespace. And it seems to be either a fresh addition to GCC, or a consequence of one of those hardening flags (although that would be rather obscure). Letting the issue stay open and wait for a newcomer to valiantly fix it :)

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Fixed by 503957c

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