Script to list all dylibs in an .app bundle that depend on JavaNativeFoundation

check_jnf_linkage.sh

#!/bin/bash

# Usage message
usage() {
    echo "Usage: $0 [-v] <directory>"
    echo "  -v  Verbose mode. Display files and their JavaNativeFoundation dependencies."
}

# Check for verbose flag
VERBOSE=0
while getopts ":v" opt; do
  case ${opt} in
    v )
      VERBOSE=1
      ;;
    \? )
      usage
      exit 1
      ;;
  esac
done
shift $((OPTIND -1))

# Check if a directory was provided
if [ -z "$1" ]; then
    usage
    exit 1
fi

# Directory to search
SEARCH_DIR=$1

# Function to check and optionally display dependency
check_file() {
    local file="$1"
    local deps=$(otool -L "$file" 2>/dev/null | grep 'JavaNativeFoundation' || true)
    if [[ ! -z "$deps" ]]; then
        if [ "$VERBOSE" -eq 1 ]; then
            echo "$file depends on:"
            echo "$deps"
            echo # empty line for better readability
        else
            echo "$file"
        fi
    fi
}

export -f check_file
export VERBOSE

# Find all dylibs and executables, then check each one
find "$SEARCH_DIR" \( -name "*.dylib" -o -perm +111 \) -type f -exec bash -c 'check_file "$0"' {} \;

example.sh

# Example usage
bash check_jnf_linkage.sh /path/to/MyApp.app