/tmp//ccWSbEX3.s: Assembler messages: /tmp//ccWSbEX3.s:845: Error: Unrecognized opcode: `mfcr'
You are probably using the wrong assembler, or an out of date assembler. Try reading the install instructions for this target at
http://gcc.gnu.org/install/specific.html#x-ibm-aix
It has a number of comments about assembler issues.
--
Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com
