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# Copyright (c) 2017 The CEF Python authors. All rights reserved.
# Licensed under the BSD 3-clause license.
"""
build_module.py is for internal use only - called by build.py.
This is Cython's setup for building the cefpython module
"""
# Use setuptools so that "Visual C++ compiler for Python 2.7" tools
# can be used. Otherwise "Unable to find vcvarsall.bat" error occurs.
try:
from setuptools import setup
from setuptools import Extension
except ImportError:
from distutils.core import setup
from distutils.extension import Extension
# Use "Extension" from Cython.Distutils so that "cython_directives" works
from Cython.Distutils import build_ext, Extension
from Cython.Compiler import Options
# noinspection PyUnresolvedReferences
from Cython.Compiler.ModuleNode import ModuleNode
from common import *
import sys
import platform
import Cython
import os
# Must monkey patch Cython's ModuleNode to inject custom C++ code
# in the generated cefpython.cpp. This is a fix for an error on Mac:
# > ImportError: dynamic module does not define init function
# To get rid of CEF's undefined symbol error when importing module
# it was required to pass "-fvisibility=hidden" and "-Wl,-dead_strip"
# flags. However these flags cause the "initcefpython_py27" Python
# Module Initialization function to be hidden as well. To workaround
# this it is required to add default visibility attribute to the
# signature of that init function.
#
# Original definition in Python 2.7:
# | https://github.com/python/cpython/blob/2.7/Include/pyport.h
# > define PyMODINIT_FUNC extern "C" __declspec(dllexport) void
#
# Original definition in Python 3.4 / 3.5 / 3.6:
# > define PyMODINIT_FUNC extern "C" __declspec(dllexport) PyObject*
if MAC:
g_generate_extern_c_macro_definition_old = (
ModuleNode.generate_extern_c_macro_definition)
def generate_extern_c_macro_definition(self, code):
# This code is written to both cefpython.h and cefpython.cpp
g_generate_extern_c_macro_definition_old(self, code)
code.putln("// Added by: cefpython/tools/build_module.py")
code.putln("#undef PyMODINIT_FUNC")
if sys.version_info[:2] == (2, 7):
code.putln("#define PyMODINIT_FUNC extern \"C\""
" __attribute__((visibility(\"default\"))) void")
else:
code.putln("#define PyMODINIT_FUNC extern \"C\""
" __attribute__((visibility(\"default\"))) PyObject*")
# Overwrite Cython function
ModuleNode.generate_extern_c_macro_definition = (
generate_extern_c_macro_definition)
# Constants
FAST_FLAG = False
# Cython options. Stop on first error, otherwise hundreds
# of errors appear in the console.
Options.fast_fail = True
def main():
global FAST_FLAG
if len(sys.argv) > 1 and "--fast" in sys.argv:
# Fast mode disables optimization flags
print("[build_module.py] FAST mode On")
FAST_FLAG = True
sys.argv.remove("--fast")
if len(sys.argv) <= 1:
print(__doc__)
sys.exit(1)
print("[build_module.py] Cython version: %s" % Cython.__version__)
compile_time_constants()
options = dict()
set_compiler_options(options)
options["include_dirs"] = get_include_dirs()
options["library_dirs"] = get_library_dirs()
options["libraries"] = get_libraries()
print("[build_module.py] Execute setup()")
setup(
name='cefpython_py%s' % PYVERSION,
cmdclass={'build_ext': build_ext},
ext_modules=get_ext_modules(options)
)
def get_winsdk_lib():
print("[build_module.py] Detect Windows SDK library directory")
ret = ""
if WINDOWS:
if ARCH32:
winsdk_libs = [
r"C:\\Program Files\\Microsoft SDKs\\Windows\\v7.1\\Lib",
r"C:\\Program Files\\Microsoft SDKs\\Windows\\v7.0\\Lib",
]
elif ARCH64:
winsdk_libs = [
r"C:\\Program Files\\Microsoft SDKs\\Windows\\v7.1\\Lib\\x64",
r"C:\\Program Files\\Microsoft SDKs\\Windows\\v7.0\\Lib\\x64",
]
else:
raise Exception("Unknown architecture")
for lib in winsdk_libs:
if os.path.exists(lib):
ret = lib
break
if not ret:
ret = winsdk_libs[0]
if not os.path.exists(ret):
raise Exception("Windows SDK Lib directory not found: %s"
% ret)
return ret
def set_compiler_options(options):
"""Extends options and also sets environment variables."""
print("[build_module.py] Set compiler options")
extra_compile_args = list()
extra_link_args = list()
if WINDOWS:
# /EHsc - using STL string, multimap and others that use
# C++ exceptions.
#
# /ignore:4217 - disable warnings such as this:
#
# client_handler_py27_32bit.lib(client_handler.obj): warning LNK4217:
# locally defined symbol _RemovePythonCallbacksForFrame imported in
# function "public: virtual bool __thiscall
# ClientHandler::OnProcessMessageReceived
#
# The above warning LNK4217 is caused by the warning below which occurs
# when building the client_handler.lib static library:
extra_compile_args.extend(["/EHsc"])
extra_link_args.extend(["/ignore:4217"])
if LINUX or MAC:
# Compiler flags
if FAST_FLAG:
extra_compile_args.append("-O0")
else:
extra_compile_args.append("-O3")
extra_compile_args.extend([
"-DNDEBUG",
"-std=gnu++11",
])
if LINUX:
os.environ["CC"] = "g++"
os.environ["CXX"] = "g++"
if FAST_FLAG:
extra_compile_args.extend(["-flto",
"-std=gnu++11"])
extra_link_args.extend(["-flto"])
else:
# Fix "ImportError ... undefined symbol ..." caused by CEF's
# include/base/ headers by adding the -flto flag (Issue #230).
# Unfortunately -flto prolongs compilation time significantly.
# More on the other flags: https://stackoverflow.com/questions/
# 6687630/ .
extra_compile_args.extend(["-flto",
"-fdata-sections",
"-ffunction-sections",
"-std=gnu++11"])
extra_link_args.extend(["-flto",
"-Wl,--gc-sections"])
if MAC:
# Compiler environment variables
os.environ["CC"] = "c++"
os.environ["CXX"] = "c++"
# COMPILER ARGS
# -Wno-return-type-c-linkage to ignore:
# > warning: 'somefunc' has C-linkage specified, but returns
# > user-defined type 'sometype' which is incompatible with C
#
# -Wno-constant-logical-operand to ignore:
# > warning: use of logical '||' with constant operand
extra_compile_args.extend([
# Compile against libc++ otherwise error "symbol not found"
# with cef::logging::LogMessage symbol. Also include -lc++
# and -lc++abi libraries.
"-stdlib=libc++",
"-Wno-return-type-c-linkage",
"-Wno-constant-logical-operand",
])
# From upstream CEF cefclient
extra_compile_args.extend([
"-fno-strict-aliasing",
"-fno-rtti",
"-fno-threadsafe-statics",
"-fobjc-call-cxx-cdtors",
# Visibility of symbols:
"-fvisibility=hidden",
"-fvisibility-inlines-hidden",
])
# Visibility of symbols
extra_compile_args.extend([
# "-flto",
# "-fdata-sections",
# "-ffunction-sections",
])
# Build libcef_dll_wrapper:
# cmake -G "Ninja" -DPROJECT_ARCH="x86_64"
# -DCMAKE_CXX_FLAGS="-stdlib=libc++"
# -DCMAKE_BUILD_TYPE=Release ..
# ninja libcef_dll_wrapper
# LINKER ARGS
extra_link_args.extend([
"-mmacosx-version-min=10.7",
"-Wl,-search_paths_first",
"-F"+os.path.join(CEF_BINARIES_LIBRARIES, "bin"),
"-framework", "Chromium Embedded Framework",
"-Wl,-rpath,@loader_path",
])
if not FAST_FLAG:
extra_link_args.extend([
# "-force_flat_namespace",
# "-flto",
"-Wl,-dead_strip",
])
options["extra_compile_args"] = extra_compile_args
options["extra_link_args"] = extra_link_args
def get_include_dirs():
print("[build_module.py] Prepare include directories")
include_dirs = list()
common_include_dirs = [
SRC_DIR,
os.path.join(SRC_DIR, "common"),
os.path.join(SRC_DIR, "extern"),
os.path.join(SRC_DIR, "extern", "cef")
]
if WINDOWS:
include_dirs.extend([WINDOWS_DIR])
include_dirs.extend(common_include_dirs)
elif MAC:
include_dirs.extend([MAC_DIR])
include_dirs.extend(common_include_dirs)
# TODO: Check these directories, are these really required on Mac?
include_dirs.extend([
'/usr/include/gtk-2.0',
'/usr/include/glib-2.0',
'/usr/include/gtk-unix-print-2.0',
'/usr/include/cairo',
'/usr/include/pango-1.0',
'/usr/include/gdk-pixbuf-2.0',
'/usr/include/atk-1.0',
# Fedora
'/usr/lib64/gtk-2.0/include',
'/usr/lib64/gtk-unix-print-2.0',
'/usr/lib64/glib-2.0/include',
'/usr/lib/gtk-2.0/include',
'/usr/lib/gtk-2.0/gtk-unix-print-2.0',
'/usr/lib/glib-2.0/include',
])
elif LINUX:
include_dirs.extend([LINUX_DIR])
include_dirs.extend(common_include_dirs)
include_dirs.extend([
'/usr/include/gtk-2.0',
'/usr/include/glib-2.0',
'/usr/include/gtk-unix-print-2.0',
'/usr/include/cairo',
'/usr/include/pango-1.0',
'/usr/include/gdk-pixbuf-2.0',
'/usr/include/atk-1.0',
# Ubuntu
'/usr/lib/x86_64-linux-gnu/gtk-2.0/include',
'/usr/lib/x86_64-linux-gnu/gtk-unix-print-2.0',
'/usr/lib/x86_64-linux-gnu/glib-2.0/include',
'/usr/lib/i386-linux-gnu/gtk-2.0/include',
'/usr/lib/i386-linux-gnu/gtk-unix-print-2.0',
'/usr/lib/i386-linux-gnu/glib-2.0/include',
# Fedora
'/usr/lib64/gtk-2.0/include',
'/usr/lib64/gtk-unix-print-2.0',
'/usr/lib64/glib-2.0/include',
'/usr/lib/gtk-2.0/include',
'/usr/lib/gtk-2.0/gtk-unix-print-2.0',
'/usr/lib/glib-2.0/include',
])
return include_dirs
def get_library_dirs():
print("[build_module.py] Prepare library directories")
library_dirs = [
os.path.join(CEF_BINARIES_LIBRARIES, "lib"),
]
if WINDOWS:
library_dirs.extend([
get_winsdk_lib(),
os.path.join(SRC_DIR, "client_handler",
"Release_py{pyver}_{os}"
.format(pyver=PYVERSION, os=OS_POSTFIX2)),
os.path.join(SRC_DIR, "subprocess",
"Release_{os}"
.format(os=OS_POSTFIX2)),
os.path.join(SRC_DIR, "subprocess",
"Release_py{pyver}_{os}"
.format(pyver=PYVERSION, os=OS_POSTFIX2)),
os.path.join(SRC_DIR, "cpp_utils",
"Release_{os}"
.format(os=OS_POSTFIX2))
])
if MAC:
library_dirs.append(os.path.join(CEF_BINARIES_LIBRARIES, "bin"))
if MAC or LINUX:
library_dirs.extend([
os.path.join(SRC_DIR, "client_handler"),
os.path.join(SRC_DIR, "subprocess"), # libcefpythonapp
os.path.join(SRC_DIR, "cpp_utils"),
])
return library_dirs
def get_libraries():
print("[build_module.py] Prepare libraries")
libraries = list()
if WINDOWS:
libraries.extend([
"libcef",
"libcef_dll_wrapper_md",
"User32",
"client_handler_py{pyver}_{os}".format(
pyver=PYVERSION, os=OS_POSTFIX2),
"libcefpythonapp_py{pyver}_{os}".format(
pyver=PYVERSION, os=OS_POSTFIX2),
"cpp_utils_{os}".format(
os=OS_POSTFIX2),
])
elif MAC:
libraries.extend([
"c++",
"c++abi",
"cef_dll_wrapper",
"cefpythonapp",
"client_handler",
"cpp_utils",
])
elif LINUX:
libraries.extend([
"X11",
"gobject-2.0",
"glib-2.0",
"gtk-x11-2.0",
# CEF and CEF Python libraries
"cef_dll_wrapper",
"cefpythonapp",
"client_handler",
"cpp_utils",
])
return libraries
def get_ext_modules(options):
ext_modules = [Extension(
name=MODULE_NAME_NOEXT,
sources=["cefpython.pyx"],
# Ignore the warning in the console:
# > C:\Python27\lib\distutils\extension.py:133: UserWarning:
# > Unknown Extension options: 'cython_directives' warnings.warn(msg)
cython_directives={
# Any conversion to unicode must be explicit using .decode().
"c_string_type": "bytes",
"c_string_encoding": "utf-8",
},
language="c++",
include_dirs=options["include_dirs"],
library_dirs=options["library_dirs"],
# Static libraries only. Order is important, if library A depends on B,
# then B must be included before A.
libraries=options["libraries"],
# When you put "./" in here, loading of libcef.so will only work when
# running scripts from the same directory that libcef.so resides in.
# runtime_library_dirs=[
# './'
# ],
extra_compile_args=options["extra_compile_args"],
extra_link_args=options["extra_link_args"],
# Defining macros:
# define_macros = [("UNICODE","1"), ("_UNICODE","1"), ]
)]
return ext_modules
def compile_time_constants():
print("[build_module.py] Generate compile_time_constants.pxi")
with open(os.path.join(SRC_DIR, "compile_time_constants.pxi"), "w") as fd:
fd.write('# This file was generated by setup.py\n')
# A way around Python 3.2 bug: UNAME_SYSNAME is not set
fd.write('DEF UNAME_SYSNAME = "%s"\n' % platform.uname()[0])
fd.write('DEF PY_MAJOR_VERSION = %s\n' % sys.version_info.major)
if __name__ == "__main__":
main()
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