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#!/usr/bin/python
"""Construct a GNU ld or Debian dpkg version-script from a set of
RFC822-style symbol lists.
Usage:
make-version-script.py [--symbols SYMBOLS] [--unreleased-version VER]
[--dpkg "LIBRARY.so.0 LIBRARY0 #MINVER#"]
[--dpkg-build-depends-package LIBRARY-dev]
[FILES...]
Each FILE starts with RFC822-style headers "Version:" (the name of the
symbol version, e.g. FOO_1.2.3) and "Extends:" (either the previous
version, or "-" if this is the first version). Next there is a blank
line, then a list of C symbols one per line.
Comments (lines starting with whitespace + "#") are allowed and ignored.
If --symbols is given, SYMBOLS lists the symbols actually exported by
the library (one per line). If --unreleased-version is given, any symbols
in SYMBOLS but not in FILES are assigned to that version; otherwise, any
such symbols cause an error.
If --dpkg is given, produce a Debian dpkg-gensymbols file instead of a
GNU ld version-script. The argument to --dpkg is the first line of the
resulting symbols file, and --dpkg-build-depends-package can optionally
be used to set the Build-Depends-Package field.
This script originates in telepathy-glib <http://telepathy.freedesktop.org/> -
please send us any changes that are needed.
"""
# Copyright (C) 2008-2010 Collabora Ltd. <http://www.collabora.co.uk/>
# Copyright (C) 2008 Nokia Corporation
#
# Copying and distribution of this file, with or without modification,
# are permitted in any medium without royalty provided the copyright
# notice and this notice are preserved.
import sys
from getopt import gnu_getopt
def e(format, *args):
sys.stderr.write((format + '\n') % args)
def main(abifiles, symbols=None, unreleased_version=None,
dpkg=False, dpkg_first_line=None, dpkg_build_depends_package=None):
gnuld = not dpkg
symbol_set = None
if symbols is not None:
symbol_set = open(symbols, 'r').readlines()
symbol_set = map(str.strip, symbol_set)
symbol_set = set(symbol_set)
versioned_symbols = set()
dpkg_symbols = []
dpkg_versions = []
if dpkg:
assert dpkg_first_line is not None
print dpkg_first_line
if dpkg_build_depends_package is not None:
print "* Build-Depends-Package: %s" % dpkg_build_depends_package
for filename in abifiles:
lines = open(filename, 'r').readlines()
version = None
extends = None
release = None
for i, line in enumerate(lines):
line = line.strip()
if line.startswith('#'):
continue
elif not line:
# the transition betwen headers and symbols
cut = i + 1
break
elif line.lower().startswith('version:'):
line = line[8:].strip()
version = line
continue
elif line.lower().startswith('extends:'):
line = line[8:].strip()
extends = line
continue
elif line.lower().startswith('release:'):
release = line[8:].strip()
continue
else:
e('Could not understand line in %s header: %s', filename, line)
raise SystemExit(1)
else:
e('No symbols in %s', filename)
raise SystemExit(1)
if version is None:
e('No Versions: header in %s', filename)
raise SystemExit(1)
if extends is None:
e('No Extends: header in %s', filename)
raise SystemExit(1)
if release is None and dpkg:
e('No Release: header in %s', filename)
raise SystemExit(1)
if dpkg:
dpkg_versions.append('%s@%s %s' % (version, version, release))
lines = lines[cut:]
if gnuld:
print "%s {" % version
print " global:"
for symbol in lines:
symbol = symbol.strip()
if symbol.startswith('#'):
continue
if gnuld:
print " %s;" % symbol
elif dpkg:
dpkg_symbols.append('%s@%s %s' % (symbol, version, release))
if symbol in versioned_symbols:
raise AssertionError('Symbol %s is in version %s and an '
'earlier version' % (symbol, version))
versioned_symbols.add(symbol)
if gnuld:
if extends == '-':
print " local:"
print " *;"
print "};"
else:
print "} %s;" % extends
print
if dpkg:
dpkg_symbols.sort()
dpkg_versions.sort()
for x in dpkg_versions:
print " %s" % x
for x in dpkg_symbols:
print " %s" % x
if symbol_set is not None:
missing = versioned_symbols - symbol_set
if missing:
e('These symbols have disappeared:')
for symbol in missing:
e(' %s', symbol)
raise SystemExit(1)
unreleased = symbol_set - versioned_symbols
if unreleased:
if unreleased_version is None:
e('Unversioned symbols are not allowed in releases:')
for symbol in unreleased:
e(' %s', symbol)
raise SystemExit(1)
if gnuld:
print "%s {" % unreleased_version
print " global:"
for symbol in unreleased:
print " %s;" % symbol
print "} %s;" % version
if __name__ == '__main__':
options, argv = gnu_getopt (sys.argv[1:], '',
['symbols=', 'unreleased-version=',
'dpkg=', 'dpkg-build-depends-package='])
opts = {'dpkg': False}
for option, value in options:
if option == '--dpkg':
opts['dpkg'] = True
opts['dpkg_first_line'] = value
else:
opts[option.lstrip('-').replace('-', '_')] = value
main(argv, **opts)
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