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#!/usr/bin/env python
# -*- Mode: Python -*-
# GObject-Introspection - a framework for introspecting GObject libraries
# Copyright (C) 2009 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
#
import re
import subprocess
from .utils import get_libtool_command
# Assume ldd output is something vaguely like
#
# libpangoft2-1.0.so.0 => /usr/lib/libpangoft2-1.0.so.0 (0x006c1000)
#
# We say that if something in the output looks like libpangoft2<blah>
# then the *first* such in the output is the soname. We require <blah>
# to start with [^A-Za-z0-9_-] to avoid problems with libpango vs libpangoft2
#
# The negative lookbehind at the start is to avoid problems if someone
# is crazy enough to name a library liblib<foo> when lib<foo> exists.
#
def _library_pattern(library_name):
return re.compile("(?<![A-Za-z0-9_-])(lib*%s[^A-Za-z0-9_-][^\s\(\)]*)"
% re.escape(library_name))
# We want to resolve a set of library names (the <foo> of -l<foo>)
# against a library to find the shared library name. The shared
# library name is suppose to be what you pass to dlopen() (or
# equivalent). And we want to do this using the libraries that 'binary'
# is linking against. The implementation below assumes that we are on an
# ELF-like system where ldd exists and the soname extracted with ldd is
# a filename that can be opened with dlopen(). Alternate implementations
# could be added here.
#
def resolve_shlibs(options, binary, libraries):
args = []
libtool = get_libtool_command(options)
if libtool:
args.extend(libtool)
args.append('--mode=execute')
args.extend(['ldd', binary.args[0]])
proc = subprocess.Popen(args, stdout=subprocess.PIPE)
patterns = {}
for library in libraries:
patterns[library] = _library_pattern(library)
shlibs = []
for line in proc.stdout:
for library, pattern in patterns.iteritems():
m = pattern.search(line)
if m:
del patterns[library]
shlibs.append(m.group(1))
break
if len(patterns) > 0:
raise SystemExit(
"ERROR: can't resolve libraries to shared libraries: " +
", ".join(patterns.keys()))
return shlibs
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