simple script that fetches licenses from all of your carthage dependencies and convert it into a plist.

fetch_carthage_licenses.sh

#!/bin/sh

#  fetch_cart_licenses.sh
#  dsxs
#
#  Created by dsxs on 2018/1/18.
#  Copyright © 2018年 dsxsxsxs. All rights reserved.

#  It'll be a good idea to automate this task by adding a run script into your build phase just like below.
# ${PROJECT_DIR}/fetch_carthage_licenses.sh ${PROJECT_DIR}

CARTS_DIR="$1/Carthage/Checkouts"
TARGET="$1/Licenses.plist"
#/*/LICENSE

echo "$(cat <<EOF
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
EOF
)" > $TARGET

for cart in "$CARTS_DIR"/*
do
if [ -d "$cart" ] ;then
    cartname=$(basename "$cart")
    license=$(cat "$cart"/LICENSE* | sed 's/&/\&amp;/g; s/</\&lt;/g; s/>/\&gt;/g; s/"/\&quot;/g; s/'"'"'/\&#39;/g')
    echo "	<key>$cartname</key>" >> $TARGET
    echo "	<string>$license</string>" >> $TARGET
fi
done
echo "</dict>" >> $TARGET
echo "</plist>" >> $TARGET