[CS-FSLUG] off topic? gcc help

[Tim Young]

  Hi there,
Your error message means that, when you ran the configure, you did 
not tell it what the target was (or did not have a target that it 
understood).

On the first link you sent, it had this example:

/	configure --target=$TARGET  --prefix=$PREFIX  --disable-nls/

Where, in a section above, the variables TARGET and PREFIX are 
configured:
/
/

/	export  PREFIX=/usr/local/cross
	export  TARGET=i586-elf/


The "TARGET" variable is what is important.
Basically, the cross-compiler knows how to build gcc for a ton of 
different architectures, but only those architectures.  If nobody has 
ever built gcc for that chip, you are in for a rough ride.  :(  But, 
if they already have the info for that architecture, then giving it 
the complete information in the "TARGET" variable should get you started.

The file, bfd/config.bfd should contain a list of known 
architectures.  Hopefully one of those will be close enough to the 
chip you are trying to build gcc for.

My time availability is rather sporadic at the moment, which is why I 
am keeping this discussion on the list instead of taking it 
off-list.  I know a few folks on the list have compiled things 
before, so someone may be able to jump in if I cannot.  :)

While a lot of Linux is set up through package managers these days, 
there are still a number of cases where you need to use make, 
configure, etc.  So these skills are fairly "on topic" for this 
email-list in my book.

     - Tim

> I was given a simulator that only runs under cygwin (linus/bash on 
> winXP).
> I am unable to build the cross-compiler on cygwin.  I JUST now 
> tried to build it on Ubuntu 10.04.
> It bombed at exactly the same place as cygwin while doing a make:
> ----------
> *** BFD does not support target xxx-unknown-none.
> *** Look in bfd/config.bfd for supported targets.
> ----------
> http://cs.uninetsolutions.com