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mkinitfs: automatically resolv elf dependencies

This is so we don't need to manually manage the dependencies which gets
ugly when supporting multiple libc.

--- a/mkinitfs.in

+++ b/mkinitfs.in

@@ -31,7 +31,7 @@

 				fi

 			done

 		done

-	done | sort -u

+	done

 }

 initfs_base() {

@@ -44,12 +44,14 @@

 	local oldpwd="$PWD"

 	cd "${basedir}"

-	for file in $(feature_files "$basedir" files); do

-		echo "${file#$basedir}"

-	done | cpio -pdm "$tmpdir" || return 1

+	lddtree -R "$basedir" -l --no-auto-root \

+		$(feature_files "$basedir" files) \

+		\

+		| sed -e "s|^$basedir||" | sort -u \

+		| cpio -pdm "$tmpdir" || return 1

 	# copy init

-	cd $startdir

+	cd "$startdir"

 	install -m755 "$init" "$tmpdir"/init || return 1

 	for i in "$fstab" "$passwd" "$group"; do

 		install -Dm644 "$i" "$tmpdir"/etc/${i##*/} || return 1

@@ -112,7 +114,7 @@

 	cd "${basedir}"

 	for file in $(find_kmods); do

 		echo "${file#/}"

-	done | cpio -pdm "$tmpdir" || return 1

+	done | sort -u | cpio -pdm "$tmpdir" || return 1

 	depmod $kernel -b "$tmpdir"

 	cd "$oldpwd"

 }