May i ask you how to solve the "undefined" mistake？

[panghao1995]

Thank you for your code!

But when i make the project, i meet the error:

could you tell me how to solve it？

[littletomatodonkey]

I met the same questions as you, but I did not find any solutions either.
I just found the answer here.

[caoshengtong]

Can you tell me what to run this code? Thank you~~~~~

[littletomatodonkey]

downlaod the trax on github, build it and then modify the CMakeLists.txt in this project. @caoshengtong

[loujt1984]

you should install trax