make cross -> as: unrecognized option `-mc68020'

Chris Stich cstich at
Wed Mar 21 13:55:58 UTC 2001

thank you for your response. 
Some more questions ;-) :
Must the "normal" as in /bin support mc68xxx?
Because I built the m68k-rtems-as.exe in the
D:\cygwin\gcc-m68k-rtems\bin path.
And I understand, that the "make cross" takes than the as with the
"m68k-rtems-" prefix in this directory.
Maybe in one of the makefiles there is the prefix for the cross missing?
Am I wrong?

Kind regards, Chris

Matthew J Fletcher wrote:
> > I'm a newbie to cygwin and rtems too, so I am building the cross
> > development envirinment and I have a problem:
> > by building the crosscompiler with cygwin "make cross" as desribed in
> > the Getting Started doc chapter A.2.4. I got this error:
> > as: unrecognized option `-mc68020'
> It looks like your 'as' does not support m68k cpu targets, i would suggest
> that
> you rebuild it from the sources. Makeing sure you dont exclude any cpu
> targets.
> When you have done this you should get the following options.
> -m68000 | -m68008 | -m68010 | -m68020 | -m68030 | -m68040 | -m68060
> | -m68302 | -m68331 | -m68332 | -m68333 | -m68340 | -mcpu32 | -m5200
> by default 'as' will asume an m68020 cpu without a fpu.

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