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Undefined reference to callback function in subscriber

asked 2016-10-21 09:36:20 -0500

ROSfc
54 ●8 ●10 ●15

updated 2016-10-21 09:36:37 -0500

I am trying to use callback inside a class, is this possible for indigo version ?

I have double and triple checked my syntax and I have run out of ideas why the compiler complains, undefined reference to foo::callback

any advice on where to look would be helpful.

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This is definitely possible, and Indigo has not changed anything wrt this.

crystal.ball.net is down at the moment, could you please include a C++ snippet that shows your callback method, and where you instantiate your subscriber? And your CMakeLists.txt, seeing as you post a linker error.

gvdhoorn ( 2016-10-21 09:45:10 -0500 )edit

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answered 2016-10-21 09:59:06 -0500

ROSfc
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@gvdhoom thank you for insisting it would be a syntax issue. After trying to find the bug and staring at the screen it just turns out that in my member function definition instead of void foo::callback(..) I just had void callback( .. ). I kept looking at the subscriber syntax. *facepalm

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Asked: 2016-10-21 09:36:20 -0500

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Last updated: Oct 21 '16

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Undefined reference to callback function in subscriber