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Prints the various glibc versions required by an executable
#!/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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