tools/check-exports.sh

   1 #!/bin/sh
   2
   3 LC_ALL=C
   4 export LC_ALL
   5
   6 stat=0
   7 so="$1"
   8 def="$2"
   9 PATTERN="_ANCHOR_"
  10
  11 TMPFILE="$(mktemp .nm-check-exports.XXXXXX)"
  12
  13
  14 get_syms() {
  15     ${NM:-nm} "$1" |
  16     sed -n 's/^[[:xdigit:]]\+ [DT] //p' |
  17     sort
  18 }
  19
  20 get_syms_from_def() {
  21     sed -n 's/^\t\(\([_a-zA-Z0-9]\+\)\|#\s*\([_a-zA-Z0-9]\+@@\?[_a-zA-Z0-9]\+\)\);$/\2\3/p' "$1" |
  22     sort
  23 }
  24
  25 anchor() {
  26     sed "s/.*/$PATTERN\0$PATTERN/"
  27 }
  28
  29 unanchor() {
  30     sed "s/^$PATTERN\(.*\)$PATTERN\$/\1/"
  31 }
  32
  33
  34 get_syms "$so" | anchor > "$TMPFILE"
  35 WRONG="$(get_syms_from_def "$def" | anchor | grep -F -f - "$TMPFILE" -v)"
  36 RESULT=$?
  37 if [ $RESULT -eq 0 ]; then
  38     stat=1
  39     echo ">>library \"$so\" exports symbols that are not in linker script \"$def\":"
  40     echo "$WRONG" | unanchor | nl
  41 fi
  42
  43 get_syms_from_def "$def" | anchor > "$TMPFILE"
  44 WRONG="$(get_syms "$so" | anchor | grep -F -f - "$TMPFILE" -v)"
  45 RESULT=$?
  46 if [ $RESULT -eq 0 ]; then
  47     stat=1
  48     echo ">>linker script \"$def\" contains symbols that are not exported by library \"$so\":"
  49     echo "$WRONG" | unanchor | nl
  50 fi
  51
  52 rm -rf "$TMPFILE"
  53 exit $stat
  54