1#!/bin/sh 2# ************************************************************* 3# 4# Licensed to the Apache Software Foundation (ASF) under one 5# or more contributor license agreements. See the NOTICE file 6# distributed with this work for additional information 7# regarding copyright ownership. The ASF licenses this file 8# to you under the Apache License, Version 2.0 (the 9# "License"); you may not use this file except in compliance 10# with the License. You may obtain a copy of the License at 11# 12# http://www.apache.org/licenses/LICENSE-2.0 13# 14# Unless required by applicable law or agreed to in writing, 15# software distributed under the License is distributed on an 16# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 17# KIND, either express or implied. See the License for the 18# specific language governing permissions and limitations 19# under the License. 20# 21# ************************************************************* 22 23# This script is needed in the process of generating exported 24# symbols list out of map files on Mac OS X (see also #i69351#) 25# The magic generating the regular expression from the temporary 26# mapfile containing only star and question mark symbols 27# 28# The script has to be called as follows: 29# nm -gx <file>.o | addsym-macosx.sh <file-with-wildcard-symbols> <temporary-file-where-to-write-the-search-expression-to> 30# See tg_shl.mk for an example of how to use the script 31# 32# Replace every * with .* and every ? with . to get awk expression 33# Put ^ at the beginning of every expression 34# Put $ at the beginning of every expression 35# Connect them all on one line, separated by | 36# Remove | at the end of this regular expression because the last end 37# of line was also replaced by | 38 39cat $1 | sed 's#*#.*#g 40s#?#.#g 41s#^#^# 42s#$#$#' | tr '\n' '|' | sed "s#|\$##" >$2 43 44# Please note that the awk expression expects to get the output of 'nm -gx'! 45# On Panther we have to filter out symbols with a value "1f" otherwise external 46# symbols will erroneously be added to the generated export symbols list file. 47# Typeinfo and typeinfo-name symbols (__ZTI*, __ZTS*) are exempt from that 48# filter: they have vague linkage and legitimately carry the same value, and 49# exporting them is correct for cross-library catch/dynamic_cast on every 50# platform that has a real version script. It does not, however, rescue the 51# macOS/arm64 C++-UNO bridge's dlsym()-based exception lookup: clang emits the 52# typeinfo of every keyless class (every UNO exception) as hidden on arm64 53# Darwin no matter what an export list says, so that bridge instead falls back 54# to synthesising RTTI when dlsym() misses. See solenv/src/component.map and 55# bridges/source/cpp_uno/s5abi_macosx_aarch64/except.cxx. 56awk -v SYMBOLSREGEXP="`cat $2`" ' 57match ($6,SYMBOLSREGEXP) > 0 && $6 !~ /_GLOBAL_/ { if (($2 != 1) && (($2 != "1f") || ($6 ~ /^__ZT[IS]/))) print $6 }' 58