mirror of
https://github.com/thegeeklab/ansible-later.git
synced 2024-11-26 23:00:36 +00:00
122 lines
4.3 KiB
Python
122 lines
4.3 KiB
Python
# pkg-config, https://www.freedesktop.org/wiki/Software/pkg-config/ integration for cffi
|
|
import sys, os, subprocess
|
|
|
|
from .error import PkgConfigError
|
|
|
|
|
|
def merge_flags(cfg1, cfg2):
|
|
"""Merge values from cffi config flags cfg2 to cf1
|
|
|
|
Example:
|
|
merge_flags({"libraries": ["one"]}, {"libraries": ["two"]})
|
|
{"libraries": ["one", "two"]}
|
|
"""
|
|
for key, value in cfg2.items():
|
|
if key not in cfg1:
|
|
cfg1[key] = value
|
|
else:
|
|
if not isinstance(cfg1[key], list):
|
|
raise TypeError("cfg1[%r] should be a list of strings" % (key,))
|
|
if not isinstance(value, list):
|
|
raise TypeError("cfg2[%r] should be a list of strings" % (key,))
|
|
cfg1[key].extend(value)
|
|
return cfg1
|
|
|
|
|
|
def call(libname, flag, encoding=sys.getfilesystemencoding()):
|
|
"""Calls pkg-config and returns the output if found
|
|
"""
|
|
a = ["pkg-config", "--print-errors"]
|
|
a.append(flag)
|
|
a.append(libname)
|
|
try:
|
|
pc = subprocess.Popen(a, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
|
|
except EnvironmentError as e:
|
|
raise PkgConfigError("cannot run pkg-config: %s" % (str(e).strip(),))
|
|
|
|
bout, berr = pc.communicate()
|
|
if pc.returncode != 0:
|
|
try:
|
|
berr = berr.decode(encoding)
|
|
except Exception:
|
|
pass
|
|
raise PkgConfigError(berr.strip())
|
|
|
|
if sys.version_info >= (3,) and not isinstance(bout, str): # Python 3.x
|
|
try:
|
|
bout = bout.decode(encoding)
|
|
except UnicodeDecodeError:
|
|
raise PkgConfigError("pkg-config %s %s returned bytes that cannot "
|
|
"be decoded with encoding %r:\n%r" %
|
|
(flag, libname, encoding, bout))
|
|
|
|
if os.altsep != '\\' and '\\' in bout:
|
|
raise PkgConfigError("pkg-config %s %s returned an unsupported "
|
|
"backslash-escaped output:\n%r" %
|
|
(flag, libname, bout))
|
|
return bout
|
|
|
|
|
|
def flags_from_pkgconfig(libs):
|
|
r"""Return compiler line flags for FFI.set_source based on pkg-config output
|
|
|
|
Usage
|
|
...
|
|
ffibuilder.set_source("_foo", pkgconfig = ["libfoo", "libbar >= 1.8.3"])
|
|
|
|
If pkg-config is installed on build machine, then arguments include_dirs,
|
|
library_dirs, libraries, define_macros, extra_compile_args and
|
|
extra_link_args are extended with an output of pkg-config for libfoo and
|
|
libbar.
|
|
|
|
Raises PkgConfigError in case the pkg-config call fails.
|
|
"""
|
|
|
|
def get_include_dirs(string):
|
|
return [x[2:] for x in string.split() if x.startswith("-I")]
|
|
|
|
def get_library_dirs(string):
|
|
return [x[2:] for x in string.split() if x.startswith("-L")]
|
|
|
|
def get_libraries(string):
|
|
return [x[2:] for x in string.split() if x.startswith("-l")]
|
|
|
|
# convert -Dfoo=bar to list of tuples [("foo", "bar")] expected by distutils
|
|
def get_macros(string):
|
|
def _macro(x):
|
|
x = x[2:] # drop "-D"
|
|
if '=' in x:
|
|
return tuple(x.split("=", 1)) # "-Dfoo=bar" => ("foo", "bar")
|
|
else:
|
|
return (x, None) # "-Dfoo" => ("foo", None)
|
|
return [_macro(x) for x in string.split() if x.startswith("-D")]
|
|
|
|
def get_other_cflags(string):
|
|
return [x for x in string.split() if not x.startswith("-I") and
|
|
not x.startswith("-D")]
|
|
|
|
def get_other_libs(string):
|
|
return [x for x in string.split() if not x.startswith("-L") and
|
|
not x.startswith("-l")]
|
|
|
|
# return kwargs for given libname
|
|
def kwargs(libname):
|
|
fse = sys.getfilesystemencoding()
|
|
all_cflags = call(libname, "--cflags")
|
|
all_libs = call(libname, "--libs")
|
|
return {
|
|
"include_dirs": get_include_dirs(all_cflags),
|
|
"library_dirs": get_library_dirs(all_libs),
|
|
"libraries": get_libraries(all_libs),
|
|
"define_macros": get_macros(all_cflags),
|
|
"extra_compile_args": get_other_cflags(all_cflags),
|
|
"extra_link_args": get_other_libs(all_libs),
|
|
}
|
|
|
|
# merge all arguments together
|
|
ret = {}
|
|
for libname in libs:
|
|
lib_flags = kwargs(libname)
|
|
merge_flags(ret, lib_flags)
|
|
return ret
|