Hello @Maxim,
I’m afraid that you are affected by the same issue that is reported in this ticket. As far as I understand, the way the Go tool launches the C compiler cannot be seen by the build wrapper.
One workaround for you might be to generate a compilation database, but I don’t think there is anything in the Go ecosystem to do that, so you would be on your own.
Another option might be to also compile those files independently from the Go files (for instance with cmake), and run the build wrapper on this extra build.