^4 6 8 10 CMake Error at .*/variable_watch\.cmake:[0-9]+ \(update_x\): Maximum recursion depth of 10 exceeded Call Stack \(most recent call first\): .*/variable_watch\.cmake:5 \(set\) .*/variable_watch\.cmake:[0-9]+ \(update_x\) .*/variable_watch\.cmake:5 \(set\) .*/variable_watch\.cmake:[0-9]+ \(update_x\) .*/variable_watch\.cmake:5 \(set\) .*/variable_watch\.cmake:[0-9]+ \(update_x\) .*/variable_watch\.cmake:5 \(set\) .*/variable_watch\.cmake:[0-9]+ \(update_x\) .*/variable_watch\.cmake:9 \(set\) .*/CMakeLists\.txt:5 \(include\) CMake Error: Error in cmake code at Unknown:0: A command failed during the invocation of callback "update_x"\.$