Help, An error happens when i'm trying to compile

[Pedro_Fernando_Flore]

Hi, everybody

I’m new in this kind of things

I copied and modified the module mc_att_control, but now i cannot compile while in the posix_sitl_default.make both are “active”, the error is the next

do you know how can i fix this problem. Thanks for your help

[acfloria]

Since you copied the whole module you have the MC_ACRO_EXPO parameter defined twice, which is not allowed. If you copy a module you have to make sure that you use unique names.