Re: cross-compiling alternatives (was Re: [PATCH 0/1] Embedded Maintainer(s)...)

[Enrico Weigelt <weigelt@metux.de>]

* Alexander Neundorf <neundorf@eit.uni-kl.de> schrieb:
> On Monday 16 June 2008 17:15:37 Enrico Weigelt wrote:
> > * Alexander Neundorf <neundorf@eit.uni-kl.de> schrieb:
> > > CMake has a cache, where the values of variables are stored, e.g. if an
> > > option is enabled or not, or where a library has been found (e.g.
> > > JPEG_LIBRARY=/usr/local/lib/libjpeg.so).
> > > The way to influence the behaviour of cmake is to change the value of
> > > these variables, this can be done either via a GUI (curses based or with
> > > cmake 2.6 also a graphical one), or via the command line:
> > > $ cmake -D<name_of_variable>=<new_value> ...more options
> >
> > Are these variables strictly specified or is all left to individual
> > author's decision ?
> 
> Authors decision.

Then you've got the same problem as w/ autoconf's config.status:
You have to tweak it for each individual package separately :(

My destiny is to have strictly standardized variables for all the
common things, so you can use an global per-target configuration 
for *all* packages ever coming.
That's what Unitool's system properties db is for.

> > hmm, why not just expecting an sane shell on the building system ?
> > (as you already have to expect a sane compiler)
> 
> Well, we could go so far to expect a "sane" operating system, but you can't 
> change it, there are "insane" people in the world ;-)

Many, many things can be done within in the toolchain, eg. fixes 
for broken libc's. For example, I've seen packages adding several 
missing functions for certain platforms - this should be the job
of the toolchain.


cu
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