Re: cons and different environments

[rick . croote]

There are two ways to handle this, and
Daniel has pointed out one approach to one of the solutions.  First
decide whether or not the shared code is a variant, in that it is common
code that MUST have different compile options.  If this is not a variant
code situation, then Daniel has the right idea, although it would always
be better, for maintainability, to manage common code by building a static
library and then linking the library in all places required.  If however
this is variant code, then you must allow cons to put the output somewhere
else, so that means you have at least one more separate target directory
for ErrorHanlder.o to go to, and at that point cons will see that each
target has a unique and separate set of build rules.

---
Rick Croote
Software Engineer
Environment and Tools Team
Philips Medical Systems
Bothell, WA
address@hidden
Phone: 425-487-7834

<address@hidden> Sent by: address@hidden 02/22/2005 09:02 AM

To:        <address@hidden>         cc:        (bcc: Rick Croote/ATL-BTL/MS/PHILIPS)         Subject:        Re: cons and different environments         Classification:

Daniel Graupner <address@hidden> schrieb am 22.02.2005,
17:48:19:
> Program $CONS 'Scheduler', 'Scheduler.cpp','../classes/Scheduler.cpp','../classe
> s/SchedulerEvent.cpp','../classes/ErrorHandler.cpp';
> Program $CONS 'Configuration', 'Configuration.cpp', '../classes/Configuration.cp
> p', '../classes/ErrorHandler.cpp';
> 
> 
> Scheduler builds fine, to build Configuration I need the Compiler-Switch
'-lxerces-c'. I tried to 
> clone the $CONS Environment in $CONS2 with LIBS=>'-lxerces-c' .
> But no cons exits with the error that there are two ways to build
'../classes/ErrorHandler.cpp'. OK, 
> I know why this error appears, but I have no idea how to deal with
it!


Hmm, is it common to define a 2nd environment and write:
Program $CONS 'Configuration', 'Configuration.cpp',
'../classes/Configuration.cpp', '../classes/ErrorHandler.o';

This seem to work.

Regards, Daniel.


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