--- /dev/null
+#!/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 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
+from sets import Set as set
+
+
+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))
+
+ 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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