[uClinux-dev] BusyBox issues

[David McCullough]

Jivin John Williams lays it down ...
> Hi David,
> 
> David McCullough wrote:
> >Jivin John Williams lays it down ...
> >
> >>David McCullough wrote:
> >>
> >>>Jivin Steve Bennett lays it down ...
> >>>
> >>>
> >>>>This often (always?) happens if you reconfigure busybox and rebuild.
> >>>>The solution is simply to clean out busybox after reconfiguring to  
> >>>>ensure
> >>>>that everything is rebuilt.
> >>>>
> >>>>$ make user/busybox_clean
> >>>
> >>>The code in user/busbox/Makefile is supposed to do a clean whenever
> >>>the config is changed.
> >>>
> >>>I think we should change:
> >>>
> >>>	.config.mkconfig: $(ROOTDIR)/config/.config
> >>>		...
> >>>		$(MAKE) clean; \
> >>>		...
> >>>
> >>>to a "distclean" perhaps to ensure everything is truly cleaned out.
> >>>Someone want to try it :-) :-)
> >>
> >>I've found that if you change the busybox config, you have to rebuild it 
> >>(make user_only) *twice* before doing a make romfs, to ensure all new 
> >>applets are built and properly symlinked.  Never taken the time to 
> >>figure out why, just a gotcha.
> >>
> >>Anyone else seen this?
> >
> >
> >Most likely because there is no Makefile seperation,  as in the
> >Makefile that builds the config has probably got dependancies
> >on the config that do not get fixed.
> >
> >I am guessing a good solution will be:
> >
> >  create a "makefile" that generates the config,  checks the config
> >  cleans the old build and rebuilds using the "Makefile" as needed.
> 
> I'm a bit wary of mixing lowercase and uppercase [mM]akefiles in the 
> same dir, for the reason that one day I'll have to stop putting off 
> supporting cygwin for MicroBlaze builds!  I know this is already done 
> extensively, but no point in adding to it!
> 
> On that note, a while ago a Makefile.uc concept was proposed - 
> user/Makefile would look for a .uc" makefile first and make -f on that, 
> if possible.

There is always the GNUMakefile option as well.  Just seems uglier to
me.

The .uc would at least make it uc-specific I guess and able to be
included with source distros etc in a non-intrusive way.

> >that way it has no dependancies on anything busybox related.  Oh and
> >uses distclean  as well ;-)  Perhaps even have it build a symlink tree
> >so we can do all the BB stuff in a subdir so we can be really sure it
> >works as clean just removes the directory :-)
> >
> >I can send an example of a "makefile" that does the symlinks if anyone 
> >wants
> >to tackle it,
> 
> This isn't urgent from my perspective, busy rebuilding toolchains at the 
> moment :)

Joy :-)

Cheers,
Davidm

-- 
David McCullough,  david_mccullough at securecomputing.com,   Ph:+61 734352815
Secure Computing - SnapGear  http://www.uCdot.org http://www.cyberguard.com