view deploy/linux/debian-dependencies.sh @ 961:f3c1546c8a5c

Address #1214, layer import produces wrong layer type. We needed a more principled approach to making sure the format gets updated properly and the dialog elements are consistent (basically separating making the dialog elements consistent from subsequently updating the format). This change should provide that, though there may be gotchas still.

#!/bin/bash

target=$1

if [ ! -f "$target" ]; then 
    echo "Usage: $0 target-executable"
    exit 1
fi

pfile=/tmp/packages_$$
rfile=/tmp/redundant_$$

trap "rm -f $pfile $rfile" 0
echo 1>&2

ldd "$target" | awk '{ print $3; }' | grep '^/' | while read lib; do
    if test -n "$lib" ; then
	dpkg-query -S "$lib"
    fi
    done | grep ': ' | awk -F: '{ print $1 }' | sort | uniq > $pfile

echo "Packages providing required libraries:" 1>&2
cat $pfile 1>&2
echo 1>&2

for p in `cat $pfile`; do 
    echo Looking at $p 1>&2
    apt-cache showpkg "$p" | grep '^  ' | grep ',' | awk -F, '{ print $1; }' | \
	while read d; do 
	    if grep -q '^'$d'$' $pfile; then
		echo $p
	    fi
    done
done | sort | uniq > $rfile

echo "Packages that can be eliminated because other packages depend on them:" 1>&2
cat $rfile 1>&2
echo 1>&2

cat $pfile $rfile | sort | uniq -u | sed 's/$/,/' | fmt -1000 | sed 's/^/Depends: /' | sed 's/,$/, libc6/'