/
find_library.py
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/
find_library.py
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#
# This is a cross-platform shared library search mechanism. Tested on:
# OSX, Ubuntu, Fedora, and Windows XP+
#
import os
import glob
import platform
import re
import sys
import shutil
from subprocess import check_call
from tar_download import download_and_extract
try:
from subprocess import getstatusoutput
except ImportError:
from commands import getstatusoutput
BASE_DIR = os.path.abspath(os.path.dirname(__file__))
if __name__ == '__main__':
download_and_extract('http://downloads.sourceforge.net/hunspell/hunspell-1.3.3.tar.gz', 'external')
def get_architecture():
return 'x64' if sys.maxsize > 2**32 else 'x86'
def get_prefered_msvc():
if sys.version_info[0] > 3 or sys.version_info[0] < 2:
raise RuntimeError('Unknown python version')
# Python 2.6-3.2
if sys.version_info[0] < 3 or sys.version_info[1] < 3:
# We should return this, but the 11 build works and we provide it
#return 'msvc9'
return 'msvc11'
# Python 3.3-3.4
elif sys.version_info[1] < 5:
# We should return this, but the 11 build works and we provide it
#return 'msvc10'
return 'msvc11'
# Python 3.5+
else:
# These versions need msvc14+ compilations
return 'msvc14'
def form_possible_names(lib, exts, extact=False):
ret = []
for ext in exts:
if not extact:
ret.append('{}*{}'.format(lib, ext))
else:
ret.append('{}{}'.format(lib, ext))
for ext in exts:
if not extact:
ret.append('lib{}*{}'.format(lib, ext))
else:
ret.append('lib{}{}'.format(lib, ext))
return ret
def do_search(paths, names=[], test_fn=None):
for pn in paths:
globbed = []
for name in names:
if '*' in name:
globbed.extend(glob.glob(os.path.join(pn, name)))
else:
globbed.append(os.path.join(pn, name))
for filepath in globbed:
if test_fn:
if test_fn(filepath):
return filepath, pn
elif os.path.exists(filepath):
return filepath, pn
return None, None
def is_library(filepath, acceptable_exts):
# TODO - This is broken for ".dll.a"
return os.path.isfile(filepath) and (os.path.splitext(filepath)[-1] in acceptable_exts)
def is_header(filepath):
return os.path.isfile(filepath)
def include_dirs(*packages):
dirs = []
if 'hunspell' in packages:
dirs = [
os.path.abspath(os.path.join(BASE_DIR, 'hunspell')),
# Download path for windows if missing
os.path.abspath(os.path.join(BASE_DIR, 'external', 'hunspell-1.3.3', 'src')),
]
if platform.system() != 'Windows':
dirs.extend([
'/usr/local/include',
'/opt/include',
'/usr/include'
])
return [path for path in dirs if os.path.isdir(path)]
def library_dirs(check_local=False):
dirs = [os.path.abspath(BASE_DIR)]
if platform.system() == 'Windows':
dirs.extend([
os.path.dirname(__file__),
os.path.abspath(BASE_DIR),
os.path.join(os.environ.get('SystemRoot'), 'system'),
os.path.join(os.environ.get('SystemRoot'), 'system32'),
os.environ.get('SystemRoot')
])
if check_local:
dirs.append(os.path.join(os.path.dirname(__file__), 'libs', 'msvc'))
dirs.extend(list(set(os.environ.get('PATH').split(os.path.pathsep))))
dirs = [os.path.abspath(path) for path in dirs]
else:
dirs.extend([
os.path.join(os.path.dirname(__file__), 'libs', 'unix'),
'/usr/local/lib64',
'/usr/local/lib',
'/usr/local/libdata',
'/opt/local/lib',
'/usr/lib/x86_64-linux-gnu',
'/usr/lib64',
'/usr/lib',
'/usr/X11/lib',
'/usr/share',
])
dirs = list(set(dirs))
try:
while True:
dirs.remove(None)
except ValueError:
pass
return [path for path in dirs if os.path.isdir(path)]
def get_library_path(lib, check_local=False):
paths = library_dirs(check_local)
acceptable_exts = [
'',
'.so'
]
if platform.system() == 'Windows':
acceptable_exts = [
'.lib'
]
elif platform.system() == 'Darwin':
acceptable_exts.append('.dylib')
names = form_possible_names(lib, acceptable_exts, check_local)
found_lib, found_path = do_search(paths, names, lambda filepath: is_library(filepath, acceptable_exts))
if found_lib and platform.system() == 'Windows':
found_lib = os.path.splitext(found_lib)[0]
return found_lib, found_path
def get_library_linker_name(lib):
found_lib, found_path = get_library_path(lib)
if not found_lib:
# Try x86 or x64
found_lib, found_path = get_library_path(lib + get_architecture(), True)
if not found_lib:
found_lib, found_path = get_library_path('-'.join(
[lib, get_prefered_msvc(), get_architecture()]), True)
if found_lib:
found_lib = re.sub(r'.dylib$|.so$|.dll$|.dll.a$|.a$', '', found_lib.split(os.path.sep)[-1])
if platform.system() != 'Windows':
found_lib = re.sub(r'^lib|', '', found_lib)
return found_lib, found_path
def package_found(package, include_dirs):
for idir in include_dirs:
package_path = os.path.join(idir, package)
if os.path.exists(package_path) and os.access(package_path, os.R_OK):
return True
return False
def build_package(package, directory):
tmp_lib_path = os.path.abspath(os.path.join(os.path.dirname(__file__), 'libs', 'tmp'))
if not os.path.exists(tmp_lib_path):
os.makedirs(tmp_lib_path)
olddir = os.getcwd()
try:
os.chdir(directory)
check_call(['./configure', '--prefix='+tmp_lib_path])
check_call('make')
check_call(['make', 'install'])
finally:
os.chdir(olddir)
lib_path = os.path.abspath(os.path.join(os.path.dirname(__file__), 'libs', 'unix'))
if not os.path.exists(lib_path):
os.makedirs(lib_path)
if package == 'hunspell':
shutil.copyfile(
os.path.join(tmp_lib_path, 'lib', 'libhunspell-1.3.so.0.0.0'),
os.path.join(lib_path, 'libhunspell-1.3.so.0'))
os.symlink(
os.path.join(lib_path, 'libhunspell-1.3.so.0'),
os.path.join(lib_path, 'libhunspell.so'))
shutil.rmtree(tmp_lib_path)
def append_links(pkg, kw):
linker_name, linker_path = get_library_linker_name(pkg)
if linker_name:
kw['libraries'].append(linker_name)
if linker_path:
kw['library_dirs'].append(linker_path)
return linker_name
def pkgconfig(*packages, **kw):
try:
flag_map = {'-I': 'include_dirs', '-L': 'library_dirs', '-l': 'libraries'}
status, response = getstatusoutput("pkg-config --libs --cflags {}".format(' '.join(packages)))
if status != 0:
raise Exception(response)
for token in response.split():
kw.setdefault(flag_map.get(token[:2]), []).append(token[2:])
if token[:2] in flag_map:
arg = flag_map.get(token[:2])
kw.setdefault(arg, []).append(token[2:])
kw[arg] = list(set(kw[arg]))
else: # throw others to extra_link_args
kw.setdefault('extra_link_args', []).append(token)
kw['extra_link_args'] = list(set(kw['extra_link_args']))
except:
kw['include_dirs'] = include_dirs(*packages)
kw['library_dirs'] = []
kw['libraries'] = []
if 'hunspell' in packages and not package_found('hunspell', kw['include_dirs']):
# Prepare for hunspell if it's missing
download_and_extract('http://downloads.sourceforge.net/hunspell/hunspell-1.3.3.tar.gz', 'external')
kw['include_dirs'] = include_dirs(*packages)
for pkg in packages:
if not append_links(pkg, kw):
if pkg == 'hunspell' and platform.system() != 'Windows':
build_package(pkg, os.path.join('external', 'hunspell-1.3.3'))
if not append_links(pkg, kw):
print("Couldn't find lib dependency after building: {}".format(pkg))
else:
print("Couldn't find lib dependency: {}".format(pkg))
return kw