Cython and c++

[Daniel Burchardt]

Hi,

I try to run v8 in python and i can't run it... :(

setup.py

from distutils.core import setup
from distutils.extension import Extension
from Cython.Build import cythonize
from Cython.Distutils import build_ext

import os
from distutils.sysconfig import get_config_vars

(opt,) = get_config_vars('OPT')
os.environ['OPT'] = " ".join(
    flag for flag in opt.split() if flag != '-Wstrict-prototypes'
)

setup(
    name = 'helloworld',
    ext_modules = cythonize(
  Extension(
      "helloworld",
      ["helloworld.pyx"],
      language = "c++",
      libraries = ["v8", "stdc++"],
      library_dirs = ["v8"],
      include_dirs = ["v8/include"],
      runtime_library_dirs = ["v8"],
      extra_compile_args = ["-std=c++11"],
      extra_link_args = ["-std=c++11"],
      #cmdclass = {'build_ext': build_ext}
  )
    )
)

helloworld.pyx

from libcpp cimport bool

cdef extern from "v8.h" namespace "v8":
  cdef cppclass V8:
        @staticmethod
        bool InitializeICU(const char *icu_data_file)
        #@staticmethod
        #void InitializeExternalStartupData(const char* directory_path)

cdef class Script:
  def ini(self):
        cdef char* xyz = 'bla'

        return V8.InitializeICU(xyz)

  def test(self):
        self.init()

        return "wow"

Compilation process is OK but when i try import helloworld i see:

Traceback (most recent call last):
  File "test.py", line 1, in <module>
    import helloworld
ImportError: /opt/cython/helloworld.so: undefined symbol: _ZN2v82V813InitializeICUEPKc

[Björn Dahlgren]

On Tuesday, 2 February 2016 22:07:32 UTC+1, Daniel Burchardt wrote:

Hi,

I try to run v8 in python and i can't run it... :(

Shot in the dark, have you tried adding "icui18n" to libraries?

[Björn Dahlgren]

On Wednesday, 3 February 2016 18:55:33 UTC+1, Björn Dahlgren wrote:

Shot in the dark, have you tried adding "icui18n" to libraries?

 $ pkg-config --libs icu-i18n
-licui18n -licuuc -licudata  

i.e. if v8 uses icu-i18n...

[Daniel Burchardt]

Result

pkg-config --libs icu-i18n
Package icu-i18n was not found in the pkg-config search path.
Perhaps you should add the directory containing `icu-i18n.pc'
to the PKG_CONFIG_PATH environment variable
No package 'icu-i18n' found

:(