#!/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"`
for i in /examples/ /doc/; do
filelist=`echo $filelist | sed "s!\<[^[:space:]]*$i[^[:space:]]*[[:space:]]*!!g"`
done
exelist=`echo $filelist | xargs -r file | grep ":.*executable" | cut -d: -f1 `
elfexelist=`echo $exelist | xargs -r file | egrep  ":.* ELF" | cut -d: -f1 `
aoutexelist=`echo $exelist | xargs -r file | egrep  -v ":.* ELF" | 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 `
elfliblist=`echo $liblist | xargs -r file | egrep  ":.* ELF" | cut -d: -f1 `
aoutliblist=`echo $liblist | xargs -r file | egrep  -v ":.* ELF" | cut -d: -f1 `

aoutexerequires=`for f in $aoutexelist; do
    if [ -x $f ]; then
	ldd $f | awk '/=>/ { print $1 }'
    fi
done | sort -u | sed "s/['\"]/\\\&/g" | xargs -r -n 1 basename | grep -v 'libNoVersion.so' | sort -u
`

elfexerequires=`for f in $elfexelist; do 
    if [ -x $f ]; then
	objdump -p $f|awk '/NEEDED/ {print $2}'
    fi
done | sed "s/['\"]/\\\&/g" | grep -v 'libNoVersion.so' | sort -u
`
		
aoutlibrequires=`for f in $aoutliblist; do
    ldd $f | awk '/=>/ { print $1 }'
done | sort -u | sed "s/['\"]/\\\&/g" | xargs -r -n 1 basename | grep -v 'libNoVersion.so' | sort -u
`

elflibrequires=`for f in $elfliblist; do
	objdump -p $f|awk '/NEEDED/ {print $2}'
done | sed "s/['\"]/\\\&/g" | grep -v 'libNoVersion.so' | sort -u
`
    
for f in $scriptlist; do
    if [ -x $f ]; then
	head -1 $f | sed -ne '/^\#\!/p' | sed -e 's/^\#\![	]*//' | cut -d" " -f1
    fi
done | sort -u

for f in $liblist $exelist ; do
    objdump -p $f | awk '
	BEGIN { START=0; LIBNAME=""; }
	/Version References:/ { START=1; }
	/required from/ && (START==1) {
	    sub(/:/, "", $3);
	    LIBNAME=$3;
	}
	(START==1) && (LIBNAME!="") && ($4~/^GLIBC_*/) { print LIBNAME "(" $4 ")"; }
	/^$/ { START=0; }
    '
done | sort -u
# Generate name of rpm package provides library


echo "$aoutexerequires
$elfexerequires
$aoutlibrequires
$elflibrequires" \
	| sort -u

echo "$aoutexerequires
$elfexerequires
$aoutlibrequires
$elflibrequires" \
	| xargs -r -- rpm -q --whatprovides --qf "%{NAME}\n"  2>/dev/null \
	| sort -u