1#!/bin/sh
2
3#
4# abi_checks.sh - check for possible abi changes
5#
6# Copyright (C) 2009 Micheal Adam <obnox@samba.org>
7#
8# This program is free software; you can redistribute it and/or modify it
9# under the terms of the GNU General Public License as published by the Free
10# Software Foundation; either version 3 of the License, or (at your option)
11# any later version.
12#
13# This program is distributed in the hope that it will be useful, but WITHOUT
14# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
16# more details.
17#
18# You should have received a copy of the GNU General Public License along with
19# this program; if not, see <http://www.gnu.org/licenses/>.
20#
21
22#
23# USAGE: abi_checks.sh LIBNAME header1 [header2 ...]
24#
25# This script creates symbol and signature lists from the provided header
26# files with the aid of the mksyms.sh and mksigs.pl scripts (saved as
27# $LIBNAME.exports.check and $LIBNAME.sigatures.check). It then compares
28# the resulting files with the files $LIBNAME.exports and $LIBNME.signatures
29# which it expects to find in the current directory.
30#
31
32LANG=C; export LANG
33LC_ALL=C; export LC_ALL
34LC_COLLATE=C; export LC_COLLATE
35
36script=$0
37dir_name=$(dirname ${script})
38
39if test x"$1" = "x" ; then
40	echo "USAGE: ${script} libname header [header ...]"
41	exit 1
42fi
43
44libname="$1"
45shift
46
47if test x"$1" = "x" ; then
48	echo "USAGE: ${script} libname header [header ...]"
49	exit 1
50fi
51
52headers="$*"
53
54exports_file=${libname}.exports
55exports_file_check=${exports_file}.check
56signatures_file=${libname}.signatures
57signatures_file_check=${signatures_file}.check
58
59
60${dir_name}/mksyms.sh awk ${exports_file_check} ${headers} 2>&1 > /dev/null
61
62cat ${headers} | ${dir_name}/mksigs.pl > ${signatures_file_check} 2> /dev/null
63
64normalize_exports_file() {
65	filename=$1
66	cat ${filename} \
67	| sed -e 's/^[ \t]*//g' \
68	| sed -e 's/^$//g' \
69	| sed -e 's/^#.*$//g' \
70	| sort | uniq > ${filename}.sort
71}
72
73normalize_exports_file ${exports_file}
74normalize_exports_file ${exports_file_check}
75
76normalize_exports_file ${signatures_file}
77normalize_exports_file ${signatures_file_check}
78
79diff -u ${exports_file}.sort ${exports_file_check}.sort
80if test "x$?" != "x0" ; then
81	echo "WARNING: possible ABI change detected in exports!"
82else
83	echo "exports check: OK"
84fi
85
86diff -u ${signatures_file}.sort ${signatures_file_check}.sort
87if test "x$?" != "x0" ; then
88	echo "WARNING: possible ABI change detected in signatures!"
89else
90	echo "signatures check: OK"
91fi
92