To capture the output of a kernel compile, why not just redirect the output? 
make zImage... > compile-output 2>&1

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Also, I usually put such commands in the background and tail the output file occasionally to see how things are going,

In reply to Re^3: Wanted: humanly readable `script` output by pc88mxer
in thread Wanted: humanly readable `script` output by mrslopenk

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