Re: [Boost-build] How to remove code duplication from Jamfile

Subject: Re: [Boost-build] How to remove code duplication from Jamfile
From: Vladimir Prus (ghost_at_[hidden])
Date: 2010-03-19 12:06:19

On Friday 19 March 2010 17:56:40 Евгений Шубин wrote:

> I have have a project with Jamroot, which consists of some subprojects with Jamfiles.
> In each Jamfile I have this block of code:
> ...
> 
> DAEMON_NAME = daemon_name ; #specific for each subproject
> 

> 
> explicit install install-bin install-conf $(INSTALL_PATH)/scripts/$(DAEMON_NAME) ;
> 
> 
> 
> Could anyone explain me how to move this block of code to Jamroot of top project?

You can put this in Jamroot:

constant JAMROOT : $(__name__) ;
actions transform-script
{
    sed "s_at_PREFIX@$(INSTALL_PATH)@g" $(>) | sed "s_at_NAME@$(DAEMON_NAME)@g" > $(<)
}	

rule your-install ( DAEMON_NAME ) 
{
        alias install : install-bin install-conf $(INSTALL_PATH)/scripts/$(DAEMON_NAME) ;
        install install-bin : $(DAEMON_NAME) : <location>$(INSTALL_PATH)/bin ;
        install install-conf : ../../conf/$(DAEMON_NAME).conf : <location>$(INSTALL_PATH)/conf ;

        make $(INSTALL_PATH)/scripts/$(DAEMON_NAME) : ../../scripts/rc_script.freebsd : @$(JAMROOT).transform-script ;
}

and then have:

        your-install some-daemon ;

inside Jamfile for each component. Does this work?

Thanks,

--
Vladimir Prus
http://vladimir_prus.blogspot.com
Boost.Build: http://boost.org/boost-build2