246 lines
8.5 KiB
Python
Executable File
246 lines
8.5 KiB
Python
Executable File
#!/usr/bin/env python
|
|
# -*- coding: utf-8 -*-
|
|
# Copyright (c) 2013 The Chromium Authors. All rights reserved.
|
|
# Use of this source code is governed by a BSD-style license that can be
|
|
# found in the LICENSE file.
|
|
|
|
import json
|
|
import os
|
|
import subprocess
|
|
import sys
|
|
import re
|
|
from optparse import OptionParser
|
|
|
|
# This script runs pkg-config, optionally filtering out some results, and
|
|
# returns the result.
|
|
#
|
|
# The result will be [ <includes>, <cflags>, <libs>, <lib_dirs>, <ldflags> ]
|
|
# where each member is itself a list of strings.
|
|
#
|
|
# You can filter out matches using "-v <regexp>" where all results from
|
|
# pkgconfig matching the given regular expression will be ignored. You can
|
|
# specify more than one regular expression my specifying "-v" more than once.
|
|
#
|
|
# You can specify a sysroot using "-s <sysroot>" where sysroot is the absolute
|
|
# system path to the sysroot used for compiling. This script will attempt to
|
|
# generate correct paths for the sysroot.
|
|
#
|
|
# When using a sysroot, you must also specify the architecture via
|
|
# "-a <arch>" where arch is either "x86" or "x64".
|
|
# cross systemroots place pkgconfig files at <systemroot>/usr/share/pkgconfig
|
|
# and one of <systemroot>/usr/lib/pkgconfig or <systemroot>/usr/lib64/pkgconfig
|
|
# depending on whether the systemroot is for a 32 or 64 bit architecture. They
|
|
# specify the 'lib' or 'lib64' of the pkgconfig path by defining the
|
|
# 'system_libdir' variable in the args.gn file. pkg_config.gni communicates
|
|
# this variable to this script with the "--system_libdir <system_libdir>" flag.
|
|
# If no flag is provided, then pkgconfig files are assumed to come from
|
|
# <systemroot>/usr/lib/pkgconfig.
|
|
#
|
|
# Additionally, you can specify the option --atleast-version. This will skip
|
|
# the normal outputting of a dictionary and instead print true or false,
|
|
# depending on the return value of pkg-config for the given package.
|
|
|
|
|
|
def SetConfigPath(options):
|
|
"""Set the PKG_CONFIG_LIBDIR environment variable.
|
|
|
|
This takes into account any sysroot and architecture specification from the
|
|
options on the given command line.
|
|
"""
|
|
|
|
sysroot = options.sysroot
|
|
assert sysroot
|
|
|
|
# Compute the library path name based on the architecture.
|
|
arch = options.arch
|
|
if sysroot and not arch:
|
|
print("You must specify an architecture via -a if using a sysroot.")
|
|
sys.exit(1)
|
|
|
|
libdir = sysroot + '/usr/' + options.system_libdir + '/pkgconfig'
|
|
libdir += ':' + sysroot + '/usr/share/pkgconfig'
|
|
os.environ['PKG_CONFIG_LIBDIR'] = libdir
|
|
return libdir
|
|
|
|
|
|
def GetPkgConfigPrefixToStrip(options, args):
|
|
"""Returns the prefix from pkg-config where packages are installed.
|
|
|
|
This returned prefix is the one that should be stripped from the beginning of
|
|
directory names to take into account sysroots.
|
|
"""
|
|
# Some sysroots, like the Chromium OS ones, may generate paths that are not
|
|
# relative to the sysroot. For example,
|
|
# /path/to/chroot/build/x86-generic/usr/lib/pkgconfig/pkg.pc may have all
|
|
# paths relative to /path/to/chroot (i.e. prefix=/build/x86-generic/usr)
|
|
# instead of relative to /path/to/chroot/build/x86-generic (i.e prefix=/usr).
|
|
# To support this correctly, it's necessary to extract the prefix to strip
|
|
# from pkg-config's |prefix| variable.
|
|
prefix = subprocess.check_output([options.pkg_config,
|
|
"--variable=prefix"] + args,
|
|
env=os.environ)
|
|
if prefix[-4] == '/usr':
|
|
return prefix[4:]
|
|
return prefix
|
|
|
|
|
|
def MatchesAnyRegexp(flag, list_of_regexps):
|
|
"""Returns true if the first argument matches any regular expression in the
|
|
given list."""
|
|
for regexp in list_of_regexps:
|
|
if regexp.search(flag) is not None:
|
|
return True
|
|
return False
|
|
|
|
|
|
def RewritePath(path, strip_prefix, sysroot):
|
|
"""Rewrites a path by stripping the prefix and prepending the sysroot."""
|
|
if os.path.isabs(path) and not path.startswith(sysroot):
|
|
if path.startswith(strip_prefix):
|
|
path = path[len(strip_prefix):]
|
|
path = path.lstrip('/')
|
|
return os.path.join(sysroot, path)
|
|
else:
|
|
return path
|
|
|
|
|
|
def main():
|
|
# If this is run on non-Linux platforms, just return nothing and indicate
|
|
# success. This allows us to "kind of emulate" a Linux build from other
|
|
# platforms.
|
|
if "linux" not in sys.platform:
|
|
print("[[],[],[],[],[]]")
|
|
return 0
|
|
|
|
parser = OptionParser()
|
|
parser.add_option('-d', '--debug', action='store_true')
|
|
parser.add_option('-p', action='store', dest='pkg_config', type='string',
|
|
default='pkg-config')
|
|
parser.add_option('-v', action='append', dest='strip_out', type='string')
|
|
parser.add_option('-s', action='store', dest='sysroot', type='string')
|
|
parser.add_option('-a', action='store', dest='arch', type='string')
|
|
parser.add_option('--system_libdir', action='store', dest='system_libdir',
|
|
type='string', default='lib')
|
|
parser.add_option('--atleast-version', action='store',
|
|
dest='atleast_version', type='string')
|
|
parser.add_option('--libdir', action='store_true', dest='libdir')
|
|
parser.add_option('--dridriverdir', action='store_true', dest='dridriverdir')
|
|
parser.add_option('--version-as-components', action='store_true',
|
|
dest='version_as_components')
|
|
(options, args) = parser.parse_args()
|
|
|
|
# Make a list of regular expressions to strip out.
|
|
strip_out = []
|
|
if options.strip_out is not None:
|
|
for regexp in options.strip_out:
|
|
strip_out.append(re.compile(regexp))
|
|
|
|
if options.sysroot:
|
|
libdir = SetConfigPath(options)
|
|
if options.debug:
|
|
sys.stderr.write('PKG_CONFIG_LIBDIR=%s\n' % libdir)
|
|
prefix = GetPkgConfigPrefixToStrip(options, args)
|
|
else:
|
|
prefix = ''
|
|
|
|
if options.atleast_version:
|
|
# When asking for the return value, just run pkg-config and print the
|
|
# return value, no need to do other work.
|
|
if not subprocess.call([options.pkg_config,
|
|
"--atleast-version=" + options.atleast_version] +
|
|
args):
|
|
print("true")
|
|
else:
|
|
print("false")
|
|
return 0
|
|
|
|
if options.version_as_components:
|
|
cmd = [options.pkg_config, "--modversion"] + args
|
|
try:
|
|
version_string = subprocess.check_output(cmd)
|
|
except:
|
|
sys.stderr.write('Error from pkg-config.\n')
|
|
return 1
|
|
print(json.dumps(list(map(int, version_string.strip().split(".")))))
|
|
return 0
|
|
|
|
if options.libdir:
|
|
cmd = [options.pkg_config, "--variable=libdir"] + args
|
|
if options.debug:
|
|
sys.stderr.write('Running: %s\n' % cmd)
|
|
try:
|
|
libdir = subprocess.check_output(cmd)
|
|
except:
|
|
print("Error from pkg-config.")
|
|
return 1
|
|
sys.stdout.write(libdir.strip())
|
|
return 0
|
|
|
|
if options.dridriverdir:
|
|
cmd = [options.pkg_config, "--variable=dridriverdir"] + args
|
|
if options.debug:
|
|
sys.stderr.write('Running: %s\n' % cmd)
|
|
try:
|
|
dridriverdir = subprocess.check_output(cmd)
|
|
except:
|
|
print("Error from pkg-config.")
|
|
return 1
|
|
sys.stdout.write(dridriverdir.strip())
|
|
return
|
|
|
|
cmd = [options.pkg_config, "--cflags", "--libs"] + args
|
|
if options.debug:
|
|
sys.stderr.write('Running: %s\n' % ' '.join(cmd))
|
|
|
|
try:
|
|
flag_string = subprocess.check_output(cmd)
|
|
except:
|
|
sys.stderr.write('Could not run pkg-config.\n')
|
|
return 1
|
|
|
|
# For now just split on spaces to get the args out. This will break if
|
|
# pkgconfig returns quoted things with spaces in them, but that doesn't seem
|
|
# to happen in practice.
|
|
all_flags = flag_string.strip().split(' ')
|
|
|
|
sysroot = options.sysroot
|
|
if not sysroot:
|
|
sysroot = ''
|
|
|
|
includes = []
|
|
cflags = []
|
|
libs = []
|
|
lib_dirs = []
|
|
|
|
for flag in all_flags[:]:
|
|
if len(flag) == 0 or MatchesAnyRegexp(flag, strip_out):
|
|
continue
|
|
|
|
if flag[:2] == '-l':
|
|
libs.append(RewritePath(flag[2:], prefix, sysroot))
|
|
elif flag[:2] == '-L':
|
|
lib_dirs.append(RewritePath(flag[2:], prefix, sysroot))
|
|
elif flag[:2] == '-I':
|
|
includes.append(RewritePath(flag[2:], prefix, sysroot))
|
|
elif flag[:3] == '-Wl':
|
|
# Don't allow libraries to control ld flags. These should be specified
|
|
# only in build files.
|
|
pass
|
|
elif flag == '-pthread':
|
|
# Many libs specify "-pthread" which we don't need since we always
|
|
# include this anyway. Removing it here prevents a bunch of duplicate
|
|
# inclusions on the command line.
|
|
pass
|
|
else:
|
|
cflags.append(flag)
|
|
|
|
# Output a GN array, the first one is the cflags, the second are the libs.
|
|
# The JSON formatter prints GN compatible lists when everything is a list of
|
|
# strings.
|
|
print(json.dumps([includes, cflags, libs, lib_dirs]))
|
|
return 0
|
|
|
|
|
|
if __name__ == '__main__':
|
|
sys.exit(main())
|