Bash script to copy all DLLs needed by an application

list_dlls.sh

#!/bin/sh

SKIP_DLLS=
DLL_PATH=/mingw/bin
OUTDIR=.

scan_executable() {
	for i in `objdump -p $1 | grep 'DLL Name:' | cut -d ' ' -f 3`; do
		if [[ ! "$SKIP_DLLS" =~ "$i" ]]; then
			echo $1: $i
			SKIP_DLLS="$SKIP_DLLS $i" 
			if [ -e $DLL_PATH/$i ]; then
				cp $DLL_PATH/$i $OUTDIR/$i
				scan_executable $OUTDIR/$i
			fi
		fi
	done
}

for i in $@; do
	case "$i" in
		--output-dir=*)
			OUTDIR=`echo $i | cut -d '=' -f 2`
			;;
		--search-path=*)
			DLL_PATH=`echo $i | cut -d '=' -f 2`
			;;
		--help)
			echo "Usage: $0 [OPTION]... [FILE]..."
			echo "Copy all DLLs used by an application to the specified directory"
			exit 1
			;;
		--*)
			echo "Unrecognised option: $i"
			echo "Try '$0 --help' for more information" 
			exit 1
			;;
		*)
			scan_executable $i
			;;
	esac
done

if [[ "$@" == "" ]]; then
	echo "No arguments provided"
	exit 1
fi