[Development] How to build and install only host_tools ?

[Bogdan Vatra]

Hi,

  I'm trying to build and install *only* host_tools and reuse them for all my 
cross platform compilation builds. I can build it with `ninja host_tools` but 
I could not found any `host_tools_install` or `install_host_tools` targets, 
and if I'm trying to install it with `ninja install` it will build and install 
everything not only host_tools. 

Am I missing something? Or there is no way to build and install only 
host_tools?

Cheers,
BogDan.