/usr/src/gcc-4.4/debian/dh_rmemptydirs is in gcc-4.4-source 4.4.7-8ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 | #! /bin/sh -e
pkg=`echo $1 | sed 's/^-p//'`
: # remove empty directories, when all components are in place
for d in `find debian/$pkg -depth -type d -empty 2> /dev/null`; do \
while rmdir $d 2> /dev/null; do d=`dirname $d`; done; \
done
exit 0
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