"multiple definition of `main'" error

asked 2011-12-22 02:09:23 -0600

alfa_80
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updated 2011-12-22 02:25:27 -0600

I have 2 nodes/files(one node for each file) in my package. It's like in talker and listener tutorial. However, after adding a new one (second node/file), I received an error of "multiple definition of `main'". I've check all the braces, they are well-placed.

What could be the possible culprits?

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Could you be more clear? You added a second what?

DimitriProsser ( 2011-12-22 02:18:39 -0600 )edit

I've just updated the question.

alfa_80 ( 2011-12-22 02:28:17 -0600 )edit

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answered 2011-12-22 02:34:59 -0600

alfa_80
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I just forgot to change the node name in the "rosbuild_add_executable" parameter in the CMakeList.txt. I only added the different name for both of them, but not the node name.

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answered 2011-12-22 02:19:53 -0600

DimitriProsser

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My first guess would be that there are two main functions in your .cpp file. You're only allowed one main per C++ executable. So if you're trying to build one executable with two nodes in it, it won't work.

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@DimitriProsser: Thanks for trying. But, I have only one main per source file (In total I have 2 mains, but they are separated by those 2 files). That is not the case. Strange behavior though.

alfa_80 ( 2011-12-22 02:27:56 -0600 )edit

Are you trying to build two source files into a single executable?

DimitriProsser ( 2011-12-22 02:35:20 -0600 )edit

@DimitriProsser: It's just fixed, into 2 executables anyway. Thanks a lot.

alfa_80 ( 2011-12-22 03:55:24 -0600 )edit

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"multiple definition of `main'" error

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