Re: [Boost-build] [V2] How to get list of header file dependencies/help with make rule

From: aulwelling_at_[hidden]
Date: 2007-03-13 12:28:59

ping 

> -----Original Message-----
> From: aulwelling 
> Sent: Wednesday, January 24, 2007 3:08 PM
> To: 'boost-build_at_[hidden]'
> Subject: [V2] How to get list of header file 
> dependencies/help with make rule
> 
> Hi all,
> 
> I am generating a C++ file using a script (called 
> generateCode.pl) that parses through other C++ files looking 
> for certain keywords.  Right now I have created a rule and 
> actions to accomplish this:
> 
> rule generateCode ( target : sources * : properties * )
> {
> }
> actions generateCode
> {
> # syntax: generateCode.pl outputFile inputFiles
>   generateCode.pl $(<) $(>)
> }
> 
> I then include the generated file inside a custom rule that 
> builds a library from a list of sources
> rule mylib ( Libname : sources * )
> {
>   lib $(Libname)
>     : $(sources)
>       version.cc
>     :
>     ;
> 
>   make version.cc : $(sources) : generateCode ;
> }
> 
> I have 2 questions:
> 
> First, I'd really like to pass the header files that each 
> source file depends on to my script as well.  Is there some 
> way to get this list into a variable so I can tack that onto 
> my list of sources?
> 
> Second, I couldn't make this work without the corresponding 
> (and empty) rule.  Could someone explain why?  I didn't see 
> that as a requirement for using the make rule.
> 
> Thanks,
> Ashley
>