bootstrap.jam

来自「Boost provides free peer-reviewed portab」· JAM 代码 · 共 62 行

# Copyright 2003 Dave Abrahams
# Copyright 2006 Rene Rivera
# Distributed under the Boost Software License, Version 1.0.
# (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)

# Demonstration that module variables have the right effect in actions.


# Top-level rule that causes a target to be built by invoking the specified
# action.
rule make ( target : sources * : act )
{
    DEPENDS all : $(target) ;
    DEPENDS $(target) : $(sources) ;
    $(act) $(target) : $(sources) ;
}


X1 = X1-global ;
X2 = X2-global ;
X3 = X3-global ;

module A
{
    X1 = X1-A ;

    rule act ( target )
    {
        NOTFILE $(target) ;
        ALWAYS $(target) ;
    }

    actions act { echo A.act $(<): $(X1) $(X2) $(X3) }

    make t1 : : A.act ;
    make t2 : : A.act ;
    make t3 : : A.act ;
}

module B
{
    X2 = X2-B ;

    actions act { echo B.act $(<): $(X1) $(X2) $(X3) }

    make t1 : : B.act ;
    make t2 : : B.act ;
    make t3 : : B.act ;
}

actions act { echo act $(<): $(X1) $(X2) $(X3) }

make t1 : : act ;
make t2 : : act ;
make t3 : : act ;

X1 on t1 = X1-t1 ;
X2 on t2 = X2-t2 ;
X3 on t3 = X3-t3 ;

DEPENDS all : t1 t2 t3 ;