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Prints the various glibc versions required by an executable
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#!/bin/bash | |
# This scripts lets you check which minimum GLIBC version an executable requires. | |
# Simply run './glibc-check.sh path/to/your/binary' | |
# | |
# You can set `MAX_VER` however low you want, although I (fasterthanlime) | |
# feel like `2.13` is a good target (For reference, Ubuntu 12.04 has GLIBC 2.15) | |
MAX_VER=2.13 | |
SCRIPTPATH=$( cd $(dirname $0) ; pwd -P ) | |
BINARY=$1 | |
# Version comparison function in bash | |
vercomp () { | |
if [[ $1 == $2 ]] | |
then | |
return 0 | |
fi | |
local IFS=. | |
local i ver1=($1) ver2=($2) | |
# fill empty fields in ver1 with zeros | |
for ((i=${#ver1[@]}; i<${#ver2[@]}; i++)) | |
do | |
ver1[i]=0 | |
done | |
for ((i=0; i<${#ver1[@]}; i++)) | |
do | |
if [[ -z ${ver2[i]} ]] | |
then | |
# fill empty fields in ver2 with zeros | |
ver2[i]=0 | |
fi | |
if ((10#${ver1[i]} > 10#${ver2[i]})) | |
then | |
return 1 | |
fi | |
if ((10#${ver1[i]} < 10#${ver2[i]})) | |
then | |
return 2 | |
fi | |
done | |
return 0 | |
} | |
IFS=" | |
" | |
VERS=$(objdump -T $BINARY | grep GLIBC_ | sed 's/.*GLIBC_\([.0-9]*\).*/\1/g' | sort -u) | |
for VER in $VERS; do | |
vercomp $VER $MAX_VER | |
COMP=$? | |
if [[ $COMP -eq 1 ]]; then | |
echo "Error! ${BINARY} requests GLIBC ${VER}, which is higher than target ${MAX_VER}" | |
echo "Affected symbols:" | |
objdump -T $BINARY | grep GLIBC_${VER} | |
echo "Looking for symbols in libraries..." | |
for LIBRARY in $(ldd $BINARY | cut -d ' ' -f 3); do | |
echo $LIBRARY | |
objdump -T $LIBRARY | fgrep GLIBC_${VER} | |
done | |
exit 27 | |
else | |
echo "Found version ${VER}" | |
fi | |
done |
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Modified so we don't catch GLIBCXX when we just want GLIBC.