scripts/update-abilist.sh

   1 #!/bin/sh
   2 # Update abilist files based on differences on one architecture.
   3 # Copyright (C) 2015-2018 Free Software Foundation, Inc.
   4 # This file is part of the GNU C Library.
   5 #
   6 # The GNU C Library is free software; you can redistribute it and/or
   7 # modify it under the terms of the GNU Lesser General Public
   8 # License as published by the Free Software Foundation; either
   9 # version 2.1 of the License, or (at your option) any later version.
  10 #
  11 # The GNU C Library is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 # Lesser General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU Lesser General Public
  17 # License along with the GNU C Library; if not, see
  18 # <http://www.gnu.org/licenses/>.
  19
  20 set -e
  21 export LC_ALL=C
  22
  23 if [ $# -lt 3 ]; then
  24   echo "usage: $0 OLD-FILE NEW-FILE FILES-TO-BE-PATCHED..." 1>&2
  25   exit 2
  26 fi
  27
  28 old_file="$1"
  29 shift
  30 new_file="$1"
  31 shift
  32
  33 tmp_old_sorted="$(mktemp)"
  34 tmp_new_sorted="$(mktemp)"
  35 tmp_new_symbols="$(mktemp)"
  36 tmp_patched="$(mktemp)"
  37
  38 cleanup () {
  39   rm -f -- "$tmp_old_sorted" "$tmp_new_sorted" \
  40     "$tmp_new_symbols" "$tmp_patched"
  41 }
  42
  43 trap cleanup 0
  44
  45 sort -u -o "$tmp_old_sorted" -- "$old_file"
  46 sort -u -o "$tmp_new_sorted" -- "$new_file"
  47
  48 # -1 skips symbols only in $old_file (deleted symbols).
  49 # -3 skips symbols in both files (unchanged symbols).
  50 comm -1 -3 "$tmp_old_sorted" "$tmp_new_sorted" > "$tmp_new_symbols"
  51
  52 new_symbol_count="$(wc -l < "$tmp_new_symbols")"
  53 if [ "$new_symbol_count" -eq 0 ]; then
  54   echo "info: no symbols added" 1>&2
  55   exit 0
  56 fi
  57
  58 echo "info: $new_symbol_count symbol(s) added" 1>&2
  59
  60 for to_be_patched in "$@" ; do
  61   sort -u -o "$tmp_patched" -- "$to_be_patched" "$tmp_new_symbols"
  62   if ! cmp -s -- "$to_be_patched" "$tmp_patched"; then
  63     echo "info: updating $to_be_patched" 1>&2
  64     cp -- "$tmp_patched" "$to_be_patched"
  65   fi
  66 done