Automake and make include

[Дилян Палаузов]

Hello,

Automake has "include" directive, that is executed when Automake is run. 
 Make has another "include" that is executed, when "make" is run.

A Makefile shall generate a file, include it/read the variables defined 
in it, and continue, considering the values in the generated Makefile, 
to calculate properly BUILD_SOURCES and prog1_SOURCES.

I want that "make" generates a file, that is then included within the 
Makefile, and Automake copies verbatim the "include FILE" from 
Makefile.am to Makefile.in , without interpreting "include".  How can I 
achieve this?

This file shall be read before BUILD_SOURCES is expanded, so the 
"include" shall happen at the beginning of Makefile.in . How can I do 
this with Automake, and not at the end.  Is this possible with Automake?

Thanks in advance for your advice
  Dilian