Install fails with missing `gitversion.sh`

Bash version: `GNU bash, version 4.3.48(1)-release (x86_64-pc-linux-gnu)`

I cloned and ran `make install`, ran into the following error:
```
bash: gitversion.sh: command not found
bash: gitversion.sh: command not found
mkdir -p ''/usr/lib
install ./cmdarg.sh ''/usr/lib/cmdarg.sh
```
Seems to have failed because of the missing file, is it separate from the repo?