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The component isn't vital. It shouldn't be relevant for 
building sunaudiodev whether an audio device is present in
the system, as this device isn't necessary for *building*
Python. Instead, presence of /usr/include/sys/audioio.h
is necessary. I'm puzzled that this file isn't there (it
is part of the core development environment, AFAIK); the
build process assumes that the header is present if the
system name is "sunos5".