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build/new/make.jam
Vladimir Prus caa491f503 Prevent the 'make' rule perform reduntant builds. Thanks to Kirill Lapshin
for the bug report.

* new/make.jam
    (make-target-class.construct): Pass the result through
    'virtual-target.register'.

* new/virtual-target.jam
    (register): Ignore incidental properties when deciding if targets are
    equivivalent.

* test/make_rule.py: Add new test.


[SVN r17701]
2003-03-03 07:47:14 +00:00

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# Copyright (C) Vladimir Prus 2002. Permission to copy, use, modify, sell and
# distribute this software is granted provided this copyright notice appears in
# all copies. This software is provided "as is" without express or implied
# warranty, and with no claim as to its suitability for any purpose.
# This module defines the 'make' rule and associated class, derived from
# 'basic-target'.
import targets ;
import class : class new ;
import property ;
import errors : error ;
import type : type ;
import regex ;
import property-set ;
rule make-target-class ( name : project : sources * : requirements *
: make-rule + : default-build * )
{
basic-target.__init__ $(name) : $(project) : $(sources) : $(requirements)
: $(default-build) ;
self.make-rule = $(make-rule) ;
rule construct ( source-targets * : property-set )
{
local t = [ new file-target $(self.name:S=) : [ type.type $(self.name:S) ]
: $(self.project) ] ;
$(t).suffix [ regex.match .(.*) : $(self.name:S) ] ;
local a = [ new action $(t) : $(source-targets) : $(self.make-rule)
: $(property-set) ] ;
$(t).action $(a) ;
return [ virtual-target.register $(t) ] ;
}
}
class make-target-class : basic-target ;
rule make ( target-name : sources * : generating-rule + : requirements * )
{
local caller = [ CALLER_MODULE ] ;
local rules = [ RULENAMES $(caller) ] ;
if $(generating-rule[1]) in $(rules)
{
# This is local rule, make it global
local n = $(caller).$(generating-rule[1]) ;
IMPORT $(caller) : $(generating-rule[1]) : : $(n) ;
generating-rule = $(n) $(generating-rule[2-]) ;
}
targets.main-target-alternative
[ new make-target-class $(target-name) : $(caller) : $(sources) :
[ targets.main-target-requirements $(requirements) : $(caller) ] :
$(generating-rule) :
:
[ targets.main-target-default-build : $(caller) ]
] ;
}
IMPORT $(__name__) : make : : make ;