Bug ID 21930
Summary SWIG generation dependencies are messed up in CMake
OS Windows NT
Component All Bugs
Frequently you can get into a situation where you have a 0 byte .pyd file for the extension module. I'm not sure what triggers this, perhaps a stale symlink or something, but when it happens, LLDB starts up with some python errors. The only way to fix it is to physically delete both liblldb and the entire lib\site-packages folder and then rebuild. If you delete only one of the two, it's not enough. This means incremental builds are broken until you do this manual step.