autogen fail on FreeBSD
After recently failing to build libgtop on OpenBSD i tried building it on FreeBSD instead.
Unfortunately this failed ever sooner, and i have no time to fix this.
The log seems to indicate that the issue is a syntax error in the configure file.
This is the full log: https://pastebin.com/prvVpTHz
While this references gobject-introspection
it happens both with that installed and without it, as well as with it enabled and disabled.