Libetonyek build failure with Boost >=1.81

[Julien Nabet]

Hello,

Could you provide the autogen.input you use?

I'm on Debian testing which uses Boost 1.83 but when checking 
config.log, I see:

configure:33360: checking which boost to use
configure:34711: result: internal

and internal Boost used is 1.85 version.

Julien