How to parse the variable in .mk file? Post: 303002996

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makefile::ast

Makefile::AST(3pm)					User Contributed Perl Documentation					Makefile::AST(3pm)

NAME

       Makefile::AST - AST for (GNU) makefiles

DESCRIPTION

       The structure of this (GNU) makefile AST is designed based on GNU make's data base listing output produced by "--print-data-base".

       This AST library provides the following classes:

       Makefile::AST
	   The primary class for ASTs. Provides interface for node adding and querying, such as "add_implicit_rule", "apply_implicit_rules",
	   "add_explicit_rule", "apply_explicit_rules", "add_var", "add_auto_var", "get_var", as well as lots of other utility functions, like
	   method "eval_var_value" for computing the ultimate values of makefile variables, method "enter_pad" and "leave_pad" for local
	   variable's scoping pad.

       Makefile::AST::Rule::Base
	   This is the base class for the rule nodes in the AST. It has properties like "normal_prereqs", "order_prereqs", "commands", and
	   "colon".

       Makefile::AST::Rule
	   This class represents the de-sugared form of simple rules and implicite rules after application. It inherits from
	   Makefile::AST::Rule::Base, and adds new properties "target" and "other_targets".

       Makefile::AST::Rule::Implicit
	   This class represents the implicit rule nodes in the AST. It inherits from Makefile::AST::Rule::Base, and adds new properties
	   "targets", "match_anything", and "is_terminal".

       Makefile::AST::StemMatch
	   This class encapsulates the file pattern matching (file names containing "%") and stem substitution algorithms.

       Makefile::AST::Variable
	   It represents the makefile variable nodes in the AST, including "name", "value", "flavor", and "origin".

       Makefile::AST::Command
	   Used to encapsulate information regarding makefile rule commands (e.g. command body, command modifiers "@", "-", "+", and etc.) as a
	   whole.

LIMITATIONS AND TODO

       Adding support for other flavors' makes into this AST library should make a huge amount of sense. The most interesting candiate is
       Microsoft's NMAKE.

CODE REPOSITORY

       For the very latest version of this script, check out the source from

       http://github.com/agentzh/makefile-parser-pm <http://github.com/agentzh/makefile-parser-pm>.

       There is anonymous access to all.

AUTHOR

       Zhang "agentzh" Yichun "<agentzh@gmail.com>"

COPYRIGHT AND LICENSE

       Copyright (c) 2007-2008 by Zhang "agentzh" Yichun (agentzh).

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

       Makefile::AST::Evaluator, Makefile::Parser::GmakeDB, makesimple, pgmake-db, Makefile::DOM.

perl v5.12.4							    2011-08-17							Makefile::AST(3pm)