[PLUG] make question

[Galen Seitz]

Mike Cherba wrote:
> I've got a make question I'm hoping someone can help me with.
> 
> I have three Makefiles
> 
> Makefile.a
> Makefile.b
> and Makefile
> 
> Makefile contains all the real targets and the .a and .b files simply export
> a couple of variables and include Makefile.  I want to eliminate Makefile.a
> and Makefile.b by performing those exports dynamically based on the chosen
> target, so "make mytargeta" would replace "make -f Makefile.a mytarget" and
> "make mytargetb" would replace "make -f Makefile.b mytarget"
> correspondingly.  I can easily mimic this with a shell script sitting in
> front of the Makefile, but I'd like to do it using only make if possible.
> I'm coming to the conclusion that there's no provision in make for this.
> The targets are inherited and fairly complex with multiple levels of
> inclusion, so just rewriting all the makefiles is out of the question.  Any
> suggestions?  I may just have to create a "build.sh"  which matches the
> target given as an argument and invokes make with the correct -f option.

I'm not sure I have enough info to really help, but it sounds like 
target specific variables might be useful.
http://www.gnu.org/software/make/manual/make.html#Target_002dspecific

The make mailing list is both low traffic and helpful, so you might 
want to ask there.  I suspect you will need to provide more details 
though.

galen
-- 
Galen Seitz
galens at seitzassoc.com