where is doc for --host option ?

[<pl...@pi...>]

HI,

I'm trying to cross-compile gnuplot for arm.

I set CC= and CXX= but it got thrown out with a message saying I should 
use --host to cross-compile.

The supposed "complete" list of options in ./configure --help and in 
INSTALL does not mention it or cross-compiling at all

where's the doc ?


TIA.