[Prof Yaffle]

Now I do feel like I'm following you :-)

Thoughts...

• Is gcc in your path (which gcc)?
  
  
• Can you - do you have to - specify the full path through an environment variable or parameter to configure?
  
  
• Do you have all compilation dependencies installed - build_essentials or whatever the Debian equivalent is?

I'll have a look and see if anyone's posted anything about doing this already. It's possible that there's a test addon somewhere... perhaps...

EDIT

An additional thought - there's a long thread on here about compilation on Synology - maybe there's some inspiration there, as that always has toolchain issues given that's it's not really intended as a development environment.