set -e

progname="$(basename \"$0\")"

 

trap 'rm -f search_patterns.txt;' ALRM HUP INT PIPE TERM ABRT FPE BUS QUIT SEGV ILL EXIT

 

readelf -s -D -W $(find . -type f -print0 | xargs -0r  file | grep " ELF" | \

 awk '{print $1}' | sed -e 's/:$//') | grep UND | grep -v LOCAL |

  perl -ple 's/.*\s(\S+)\s*$/\^$1\$/g' | sort -u > search_patterns.txt;

 

objdump -T --private-headers $(find . -type f -print0  | xargs -0r file | grep " ELF" | \

  awk '{print $1}' | sed -e 's/:$//') | grep NEEDED | sort -u | awk '{print $2}' |

    while read lib; do

        # For each library, see where it lives o the file system

        LIB=

        for library_dir in "/lib" "/usr/lib" $EXTRA_LIBRARY_PATHS; do

            if [ -e "$library_dir/$lib" ]; then

                 LIB="$library_dir/$lib";

                 break

            fi

        done

        if [ -z "$LIB" ]; then

            echo >&2 "Can't find $lib"

            continue

        fi

        # If we fond the library, find what symbols it defines, and if these symbols

        # are some that we need

        if readelf -s -D -W $LIB | grep -v UND | perl -ple 's/.*\s(\S+)\s*$/$1/g' | \

            sort -u | grep -q -f search_patterns.txt ; then

            # Library provides at least some symbols we need

            if [ -n "$DEBUG" ]; then echo "Found $LIB"; fi

        else

            # Library does not provide any symbols we need

            echo "$LIB" ;

        fi

 

rm -f search_patterns.txt;

exit 0