#!/bin/sh

# note this works for both a.out and ELF executables
# it also auto-generates requirment lines for shell scripts

ulimit -c 0

filelist=`sed "s/['\"]/\\\&/g"`
exelist=`echo $filelist | xargs -r file | grep ":.*executable" | cut -d: -f1 `
scriptlist=`echo $filelist | xargs -r file | egrep ":.* (commands|script) " | cut -d: -f1 `
liblist=`echo $filelist | xargs -r file | grep ":.*shared object" | cut -d : -f1 `

for f in $exelist; do
    lib64=`if file -L $f 2>/dev/null | grep "ELF 64-bit" >/dev/null; then echo "()(64bit)"; fi`
    if [ -x $f ]; then
	ldd $f | awk '/=>/ { if ($1 !~ /libNoVersion.so/ && $1 !~ /4[um]lib.so/) { gsub(/'\''"/,"\\&",$1); printf "%s'$lib64'\n", $1 } }'
    fi
done | xargs -r -n 1 basename | sort -u

for f in $liblist; do
    lib64=`if file -L $f 2>/dev/null | grep "ELF 64-bit" >/dev/null; then echo "()(64bit)"; fi`
    ldd $f | awk '/=>/ { if ($1 !~ /libNoVersion.so/ && $1 !~ /4[um]lib.so/) { gsub(/'\''"/,"\\&",$1); printf "%s'$lib64'\n", $1 } }'
done | xargs -r -n 1 basename | sort -u

for f in $scriptlist; do
    if [ -x $f ]; then
	head -1 $f | sed -e 's/^\#\![ 	]*//' | cut -d" " -f1
    fi
done | sort -u

for f in $liblist $exelist ; do
    lib64=`if file -L $f 2>/dev/null | grep "ELF 64-bit" >/dev/null; then echo "(64bit)"; fi`
    objdump -p $f | awk '
	BEGIN { START=0; LIBNAME=""; }
	/Version References:/ { START=1; }
	/required from/ && (START==1) {
	    sub(/:/, "", $3);
	    LIBNAME=$3;
	}
	(START==1) && (LIBNAME!="") && ($4!="") { print LIBNAME "(" $4 ")'$lib64'"; }
	/^$/ { START=0; }
    '
done | sort -u