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# -*- 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 os
import sys
import platform
import re
import subprocess
from .utils import get_libtool_command, extract_libtool_shlib, host_os
from .ccompiler import CCompiler
# For .la files, the situation is easy.
def _resolve_libtool(options, binary, libraries):
shlibs = []
for library in libraries:
shlib = extract_libtool_shlib(library)
if shlib:
shlibs.append(shlib)
return shlibs
# 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.
def _ldd_library_pattern(library_name):
return re.compile(r"""^
# Require trailing slash to avoid matching liblibfoo when looking for libfoo.
(.*[/])?
lib%s
# Prohibit library name characters to avoid matching libpangoft2 when looking for libpango.
[^/A-Za-z0-9_-]
# Anything but the path separator to avoid matching directories.
[^/]*
$""" % re.escape(library_name), re.VERBOSE)
# This is a what we do for non-la files. We assume 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().
#
# On OS X this will need a straightforward alternate implementation
# in terms of otool.
#
# Windows is more difficult, since there isn't always a straightforward
# translation between library name (.lib) and the name of the .dll, so
# extracting the dll names from the compiled app may not be sufficient.
# We might need to hunt down the .lib in the compile-time path and
# use that to figure out the name of the DLL.
#
def _resolve_non_libtool(options, binary, libraries):
if not libraries:
return []
if platform.platform().startswith('OpenBSD'):
# Hack for OpenBSD when using the ports' libtool which uses slightly
# different directories to store the libraries in. So rewite binary.args[0]
# by inserting '.libs/'.
old_argdir = binary.args[0]
new_libsdir = os.path.join(os.path.dirname(binary.args[0]), '.libs/')
new_lib = new_libsdir + os.path.basename(binary.args[0])
if os.path.exists(new_lib):
binary.args[0] = new_lib
os.putenv('LD_LIBRARY_PATH', new_libsdir)
else:
binary.args[0] = old_argdir
if host_os() == 'nt':
cc = CCompiler()
return cc.resolve_windows_libs(libraries, options)
else:
args = []
libtool = get_libtool_command(options)
if libtool:
args.extend(libtool)
args.append('--mode=execute')
platform_system = platform.system()
if options.ldd_wrapper:
args.extend([options.ldd_wrapper, binary.args[0]])
elif platform_system == 'Darwin':
args.extend(['otool', '-L', binary.args[0]])
else:
args.extend(['ldd', binary.args[0]])
output = subprocess.check_output(args)
if isinstance(output, bytes):
output = output.decode("utf-8", "replace")
shlibs = resolve_from_ldd_output(libraries, output)
return list(map(sanitize_shlib_path, shlibs))
def sanitize_shlib_path(lib):
# Use absolute paths on OS X to conform to how libraries are usually
# referenced on OS X systems, and file names everywhere else.
# In case we get relative paths on macOS (like @rpath) then we fall
# back to the basename as well:
# https://gitlab.gnome.org/GNOME/gobject-introspection/issues/222
if sys.platform == "darwin":
if not os.path.isabs(lib):
return os.path.basename(lib)
return lib
else:
return os.path.basename(lib)
def resolve_from_ldd_output(libraries, output):
patterns = {}
for library in libraries:
if not os.path.isfile(library):
patterns[library] = _ldd_library_pattern(library)
if len(patterns) == 0:
return []
shlibs = []
for line in output.splitlines():
# ldd on *BSD show the argument passed on the first line even if
# there is only one argument. We have to ignore it because it is
# possible for the name of the binary to match _ldd_library_pattern.
if line.endswith(':'):
continue
for word in line.split():
for library, pattern in patterns.items():
m = pattern.match(word)
if m:
del patterns[library]
shlibs.append(m.group())
break
if len(patterns) > 0:
raise SystemExit(
"ERROR: can't resolve libraries to shared libraries: " +
", ".join(patterns.keys()))
return shlibs
# 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.
#
def resolve_shlibs(options, binary, libraries):
libtool = list(filter(lambda x: x.endswith(".la"), libraries))
non_libtool = list(filter(lambda x: not x.endswith(".la"), libraries))
return (_resolve_libtool(options, binary, libtool) +
_resolve_non_libtool(options, binary, non_libtool))
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