Thanks. make clean didn't change the results.
Outdated- most likely. The newest files on the git are 5 years old, and not knowing what I'm doing, I just followed the steps in the readme.md file.
Here is where sdcc got installed:
##### ON WINDOWS
* Install the wixel development bundle for windows from [here](http://www.pololu.com/file/0J526/wixel-dev-bundle-120127.exe) (you need this in addition to the drivers you downloaded in step 2!!)
* Open a command prompt (should be under start menu -> programs -> accessories -> Command Prompt)
* Cd into the folder you downloaded this repo to (ex. `cd C:\Users\<computer name>\Desktop\wixel-xDrip`)
* now run `make_all.bat` by typing `make_all.bat` into the command prompt
I bought the Wixel device from Pololu, so I should probably ask them...