scripts/update-abilist.sh

   1 #!/bin/sh
   2 # Update abilist files based on differences on one architecture.
   3 # Copyright (C) 2015-2022 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 # <https://www.gnu.org/licenses/>.
  19
  20 set -e
  21 export LC_ALL=C
  22
  23 if [ $# -lt 2 ]; then
  24   echo "usage: $0 OLD-FILE NEW-FILE FILES-TO-BE-PATCHED..." 1>&2
  25   exit 2
  26 elif [ $# -eq 2 ]; then
  27   echo "info: no files to patch" 1>&2
  28   exit 0
  29 fi
  30
  31 old_file="$1"
  32 shift
  33 new_file="$1"
  34 shift
  35
  36 tmp_old_sorted="$(mktemp)"
  37 tmp_new_sorted="$(mktemp)"
  38 tmp_new_symbols="$(mktemp)"
  39 tmp_patched="$(mktemp)"
  40
  41 cleanup () {
  42   rm -f -- "$tmp_old_sorted" "$tmp_new_sorted" \
  43     "$tmp_new_symbols" "$tmp_patched"
  44 }
  45
  46 trap cleanup 0
  47
  48 sort -u -o "$tmp_old_sorted" -- "$old_file"
  49 sort -u -o "$tmp_new_sorted" -- "$new_file"
  50
  51 # -1 skips symbols only in $old_file (deleted symbols).
  52 # -3 skips symbols in both files (unchanged symbols).
  53 comm -1 -3 "$tmp_old_sorted" "$tmp_new_sorted" > "$tmp_new_symbols"
  54
  55 new_symbol_count="$(wc -l < "$tmp_new_symbols")"
  56 if [ "$new_symbol_count" -eq 0 ]; then
  57   echo "info: no symbols added" 1>&2
  58   exit 0
  59 fi
  60
  61 echo "info: $new_symbol_count symbol(s) added" 1>&2
  62
  63 for to_be_patched in "$@" ; do
  64   sort -u -o "$tmp_patched" -- "$to_be_patched" "$tmp_new_symbols"
  65   if ! cmp -s -- "$to_be_patched" "$tmp_patched"; then
  66     echo "info: updating $to_be_patched" 1>&2
  67     cp -- "$tmp_patched" "$to_be_patched"
  68   fi
  69 done