./checkduplicatesymbols.sh libFoo.a libBar.a

checkduplicatesymbols.sh

#!/bin/sh

# exit the script if any statement returns a non-true return value
set -e
# exit the script on dereferencing uninitialised variables
set -o nounset

self=$(basename $0)
origin=$(cd "$(dirname "$0")"; pwd)

temp=$(mktemp -d -t ${self}) && trap 'rm -rf ${temp}' EXIT HUP INT QUIT TERM

# extract symbols
extract_symbols() {
  $(nm -arch armv7 -o -U -j $1 2> /dev/null | cut -d \  -f 2 | sort -u > $2)
}

for lib1; do
  basename1=$(basename ${lib1})
  symbols1=${temp}/${basename1}.symbols
  [ ! -e "${symbols1}" ] && extract_symbols ${lib1} ${symbols1}
  shift
  for lib2; do
    basename2=$(basename ${lib2})
    symbols2=${temp}/${basename2}.symbols
    [ ! -e "${symbols2}" ] && extract_symbols ${lib2} ${symbols2}
    echo "checking '${basename2}' against '${basename1}':"
    comm -1 -2 ${symbols1} ${symbols2}
    echo "--------------------------------------------------------------------------------"
  done
done