about compile principle of gcc

[attonie]

hello:
     few days ago, i read a book talk about compile principle, it take mention of the gcc`s compile principle is different from UNIX style (source->asm code->binary), in its words just like the interpretation of lisp, first translate all the source to a model then compile it to binary, so i have a question about HOW the gcc compile a source code, its working principle is WHAT ? i very want to know what`s the model 
     i also spent much time to search it online, but fail, so i ask gcc`s author, what`s it? or tell me the any online documents about it, many thanks. 
                                                             
   attonie
   (attonie@etang.com)





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