Re: CVS commit: [agc-symver] src/lib/libc

[Alistair Crooks <agc%pkgsrc.org@localhost>]

On Sun, Mar 31, 2013 at 11:48:21AM +0900, Masao Uebayashi wrote:
> How do you generate Version.map?

With a script.
 
> Can you define symbols per-module (e.g., libc/gen, libc/stdio, ...)?

No, that makes no sense.  Symbols are per-library, and no-one wants to
manage multiple files for the symbols in one library.  What next? 
Multiple files for major, minor and teeny shlib_versions?

I'll commit some information regarding the symbol versioning methods RSN.

Regards,
Alistair

#! /bin/sh

# $NetBSD: genraidconf.sh,v 1.5 2011/05/19 00:24:22 agc Exp $

# Copyright (c) 2013 Alistair Crooks <agc%NetBSD.org@localhost>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

# Usage: mkvermap c
#       makes symbol versioning info for /usr/lib/libc.so

major=0
minor=0
minimus=0
if [ -f shlib_version ]; then
        . ./shlib_version
fi
os="$(uname -r)"
output=Version.map
while [ $# -gt 0 ]; do
        case "$1" in
        --major=*)              major=${1#--major=} ;;
        --minor=*)              minor=${1#--minor=} ;;
        --os=*)                 os=${1#--os=} ;;
        --output=*)             output=${1#--output=} ;;
        -o)                     output=$2; shift ;;
        -v)                     set -x ;;
        *)                      break ;;
        esac
        shift
done

LIB=$1

nm /usr/lib/lib${LIB}.so |
        awk '$2 ~ /^[BCDRTWV]$/ { print "\t" $3 ";" }' |
        sort -u |
        awk -v LIB=${LIB} -v osver="${os}" -v major=${major} -v minor=${minor} 
-v minimus=${minimus} '
        BEGIN {
                printf("LIB%s_%s.%s.%s.0 {\nglobal:\n", toupper(LIB), major, 
minor, minimus)
        }
        { print }
        END {
                printf("};\n\n");
                printf("NetBSD_%s.0 {\n} LIB%s_%s.%s.%s.0;\n\n", osver, 
toupper(LIB), major, minor, minimus);
                printf("LIB%s_private_%s.%s.%s.0 {\nlocal:\n\t*;\n};\n\n", 
toupper(LIB), major, minor, minimus);
        }' > ${output}

exit 0