"Cannot import name core" after fresh install (1.5.0.2) #702

tscohen · 2015-11-28T12:39:56Z

Just installed the latest chainer using pip on Mac OSX, and now I get this error on importing cupy:

In [1]: import cupy
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-9136569de189> in <module>()
----> 1 import cupy

/Users/tsc/anaconda/lib/python2.7/site-packages/cupy/__init__.py in <module>()
      6 
      7 
----> 8 from cupy import binary
      9 from cupy import core
     10 from cupy import creation

/Users/tsc/anaconda/lib/python2.7/site-packages/cupy/binary/__init__.py in <module>()
      3 
      4 # "NOQA" to suppress flake8 warning
----> 5 from cupy.binary import elementwise  # NOQA
      6 from cupy.binary import packing  # NOQA

/Users/tsc/anaconda/lib/python2.7/site-packages/cupy/binary/elementwise.py in <module>()
----> 1 from cupy import core
      2 
      3 
      4 bitwise_and = core.bitwise_and
      5 

/Users/tsc/anaconda/lib/python2.7/site-packages/cupy/core/__init__.py in <module>()
----> 1 from cupy.core import core
      2 
      3 ndarray = core.ndarray
      4 
      5 get_size = core.get_size

ImportError: cannot import name core

It seems like core is now a Cython module, so perhaps the installer is not properly compiling it?

The text was updated successfully, but these errors were encountered:

tscohen · 2015-11-30T09:10:51Z

I just upgraded to the latest version (1.5.0.3), and things seem to be working now.

yegortk · 2015-11-30T23:57:38Z

Just updated chainer to 1.5.0.3 on Mac OSX with pip, tried to import cupy, it failed.

>>> import cupy
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.7/site-packages/cupy/__init__.py", line 8, in <module>
    from cupy import binary
  File "/usr/local/lib/python2.7/site-packages/cupy/binary/__init__.py", line 5, in <module>
    from cupy.binary import elementwise  # NOQA
  File "/usr/local/lib/python2.7/site-packages/cupy/binary/elementwise.py", line 1, in <module>
    from cupy import core
  File "/usr/local/lib/python2.7/site-packages/cupy/core/__init__.py", line 1, in <module>
    from cupy.core import core
ImportError: cannot import name core

unnonouno · 2015-12-01T06:18:49Z

That means you failed to install CuPy.
Please try pip with -v option, that shows a lot of logs.

$ pip uninstall chainer
$ pip install chainer -v

yegortk · 2015-12-02T00:33:12Z

I uninstalled chainer and then installed it with -v flag per recommendation. The log is below.
import cupy still fails despite no apparent warnings during installation.

pip install chainer -v

Collecting chainer
  Getting page https://pypi.python.org/simple/chainer/
  Starting new HTTPS connection (1): pypi.python.org
  "GET /simple/chainer/ HTTP/1.1" 200 612
  1 location(s) to search for versions of chainer:
  * https://pypi.python.org/simple/chainer/
  Getting page https://pypi.python.org/simple/chainer/
  Analyzing links from page https://pypi.python.org/simple/chainer/
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.0.0.zip#md5=072608f74c35f21f36478c56f33726e7 (from https://pypi.python.org/simple/chainer/), version: 1.0.0
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.0.1.tar.gz#md5=665ecc3e0f7e86cc0703c4f30968267c (from https://pypi.python.org/simple/chainer/), version: 1.0.1
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.1.0.tar.gz#md5=3f42a6312a45dcb1dddfbf3caaab5375 (from https://pypi.python.org/simple/chainer/), version: 1.1.0
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.1.1.tar.gz#md5=f785c33ac0c2cdb950183ca8a2299513 (from https://pypi.python.org/simple/chainer/), version: 1.1.1
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.1.2.tar.gz#md5=29c3b6167e4e260a68855a720d4dde31 (from https://pypi.python.org/simple/chainer/), version: 1.1.2
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.2.0.tar.gz#md5=9037b028a32114909125ccd34c2123fd (from https://pypi.python.org/simple/chainer/), version: 1.2.0
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.3.0.tar.gz#md5=14936fa6601b23b96b31e861d685858f (from https://pypi.python.org/simple/chainer/), version: 1.3.0
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.3.1.tar.gz#md5=c820c6ac929ce31623bac43c03698650 (from https://pypi.python.org/simple/chainer/), version: 1.3.1
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.3.2.tar.gz#md5=e56367ba80b88d6efe1ced5b87c9893d (from https://pypi.python.org/simple/chainer/), version: 1.3.2
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.4.0.tar.gz#md5=83f714f75d3707dfcfb99cd6350b7960 (from https://pypi.python.org/simple/chainer/), version: 1.4.0
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.4.1.tar.gz#md5=7d5d18febf657f9f0613079c7b4c59ff (from https://pypi.python.org/simple/chainer/), version: 1.4.1
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.5.0.1.tar.gz#md5=e0f18e6371a3b74dc32596e57780cb0e (from https://pypi.python.org/simple/chainer/), version: 1.5.0.1
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.5.0.2.tar.gz#md5=68f9bcdb90df95d5c2c61d41f25dfe1d (from https://pypi.python.org/simple/chainer/), version: 1.5.0.2
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.5.0.3.tar.gz#md5=074d605517c0f09a4de5b8160d8d7fcb (from https://pypi.python.org/simple/chainer/), version: 1.5.0.3
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.5.0.tar.gz#md5=3cb13647721dcc2b1de1de0032dd31f5 (from https://pypi.python.org/simple/chainer/), version: 1.5.0
  Using version 1.5.0.3 (newest of versions: 1.5.0.3, 1.5.0.2, 1.5.0.1, 1.5.0, 1.4.1, 1.4.0, 1.3.2, 1.3.1, 1.3.0, 1.2.0, 1.1.2, 1.1.1, 1.1.0, 1.0.1, 1.0.0)
  Using cached wheel link: file:///Users/bergschild/Library/Caches/pip/wheels/b1/d2/f8/a3b1edcb75d25c85ce8d2f71b4ea9c588f0f29ef8b0bb08150/chainer-1.5.0.3-cp27-none-macosx_10_11_x86_64.whl
Requirement already satisfied (use --upgrade to upgrade): h5py>=2.5.0 in /usr/local/lib/python2.7/site-packages (from chainer)
Requirement already satisfied (use --upgrade to upgrade): numpy>=1.9.0 in /usr/local/lib/python2.7/site-packages (from chainer)
Requirement already satisfied (use --upgrade to upgrade): nose in /usr/local/lib/python2.7/site-packages (from chainer)
Requirement already satisfied (use --upgrade to upgrade): filelock in /usr/local/lib/python2.7/site-packages (from chainer)
Requirement already satisfied (use --upgrade to upgrade): six>=1.9.0 in /usr/local/lib/python2.7/site-packages (from chainer)
Requirement already satisfied (use --upgrade to upgrade): Cython>=0.23 in /usr/local/lib/python2.7/site-packages (from chainer)
Requirement already satisfied (use --upgrade to upgrade): protobuf in /usr/local/lib/python2.7/site-packages (from chainer)
Requirement already satisfied (use --upgrade to upgrade): setuptools in /usr/local/lib/python2.7/site-packages (from protobuf->chainer)
Installing collected packages: chainer

Successfully installed chainer-1.5.0.3
Cleaning up...

Then in Pyhton:

>>> import cupy
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.7/site-packages/cupy/__init__.py", line 8, in <module>
    from cupy import binary
  File "/usr/local/lib/python2.7/site-packages/cupy/binary/__init__.py", line 5, in <module>
    from cupy.binary import elementwise  # NOQA
  File "/usr/local/lib/python2.7/site-packages/cupy/binary/elementwise.py", line 1, in <module>
    from cupy import core
  File "/usr/local/lib/python2.7/site-packages/cupy/core/__init__.py", line 1, in <module>
    from cupy.core import core
ImportError: cannot import name core

delta2323 · 2015-12-02T09:15:45Z

I guess compile does not occur because there is no record in the log that cython executes it.

You can check if it is the case as follows:

Find the path where CuPy is installed. You can see the location of chainer by chainer.__file__ . CuPy is expected to be installed in the same directory.
Check if shared objects (e.g. cupy/util.so, cupy/core/core.so) are created in cupy directory.

If compile does not occur, I recommend you to check if the path to CUDA executables and libraries are appropriate (See here).

unnonouno · 2015-12-03T04:11:21Z

Sorry, -v is not enough. Please use pip install chainer -vvvv. pip command hides all installation logs without -vvvv.

yegortk · 2015-12-03T04:29:29Z

Thanks, I tried pip install chainer -vvvv, but the log is exactly the same as above for pip install chainer -v. The shared objects cupy/util.so, cupy/core/core.so are missing from the cupy directory. However, all gpu code works with chainer v. 1.4.1, so the cuda paths seem to be set up correctly.

unnonouno · 2015-12-05T13:52:22Z

Oh, really? I suspect that pip uses cache. Please try pip install --no-cache-dir chainer.

yegortk · 2015-12-05T23:00:54Z

Ok, I managed to successfully install chainer and have cupy compile correctly by running
LDFLAGS="-F/Library/Frameworks -framework CUDA" pip install --no-cache-dir chainer

Before that, I ran pip install --no-cache-dir chainer -vvvv. I narrowed the problem down to the following error:

    ld: file not found: @rpath/CUDA.framework/Versions/A/CUDA for architecture x86_64
    clang: error: linker command failed with exit code 1 (use -v to see invocation)
    **************************************************
    *** Cannot link libraries: ['cublas', 'cuda', 'cudart', 'curand']
    *** Skip installing cuda support
    *** Check your LIBRARY_PATH environment variable
    **************************************************

The old partial error log:

Collecting chainer
  Getting page https://pypi.python.org/simple/chainer/
  Starting new HTTPS connection (1): pypi.python.org
  "GET /simple/chainer/ HTTP/1.1" 200 612
  1 location(s) to search for versions of chainer:
  * https://pypi.python.org/simple/chainer/
  Getting page https://pypi.python.org/simple/chainer/
  "GET /simple/chainer/ HTTP/1.1" 200 612
  Analyzing links from page https://pypi.python.org/simple/chainer/
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.0.0.zip#md5=072608f74c35f21f36478c56f33726e7 (from https://pypi.python.org/simple/chainer/), version: 1.0.0
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.0.1.tar.gz#md5=665ecc3e0f7e86cc0703c4f30968267c (from https://pypi.python.org/simple/chainer/), version: 1.0.1
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.1.0.tar.gz#md5=3f42a6312a45dcb1dddfbf3caaab5375 (from https://pypi.python.org/simple/chainer/), version: 1.1.0
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.1.1.tar.gz#md5=f785c33ac0c2cdb950183ca8a2299513 (from https://pypi.python.org/simple/chainer/), version: 1.1.1
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.1.2.tar.gz#md5=29c3b6167e4e260a68855a720d4dde31 (from https://pypi.python.org/simple/chainer/), version: 1.1.2
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.2.0.tar.gz#md5=9037b028a32114909125ccd34c2123fd (from https://pypi.python.org/simple/chainer/), version: 1.2.0
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.3.0.tar.gz#md5=14936fa6601b23b96b31e861d685858f (from https://pypi.python.org/simple/chainer/), version: 1.3.0
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.3.1.tar.gz#md5=c820c6ac929ce31623bac43c03698650 (from https://pypi.python.org/simple/chainer/), version: 1.3.1
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.3.2.tar.gz#md5=e56367ba80b88d6efe1ced5b87c9893d (from https://pypi.python.org/simple/chainer/), version: 1.3.2
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.4.0.tar.gz#md5=83f714f75d3707dfcfb99cd6350b7960 (from https://pypi.python.org/simple/chainer/), version: 1.4.0
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.4.1.tar.gz#md5=7d5d18febf657f9f0613079c7b4c59ff (from https://pypi.python.org/simple/chainer/), version: 1.4.1
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.5.0.1.tar.gz#md5=e0f18e6371a3b74dc32596e57780cb0e (from https://pypi.python.org/simple/chainer/), version: 1.5.0.1
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.5.0.2.tar.gz#md5=68f9bcdb90df95d5c2c61d41f25dfe1d (from https://pypi.python.org/simple/chainer/), version: 1.5.0.2
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.5.0.3.tar.gz#md5=074d605517c0f09a4de5b8160d8d7fcb (from https://pypi.python.org/simple/chainer/), version: 1.5.0.3
    Found link https://pypi.python.org/packages/source/c/chainer/chainer-1.5.0.tar.gz#md5=3cb13647721dcc2b1de1de0032dd31f5 (from https://pypi.python.org/simple/chainer/), version: 1.5.0
  Using version 1.5.0.3 (newest of versions: 1.5.0.3, 1.5.0.2, 1.5.0.1, 1.5.0, 1.4.1, 1.4.0, 1.3.2, 1.3.1, 1.3.0, 1.2.0, 1.1.2, 1.1.1, 1.1.0, 1.0.1, 1.0.0)
  "GET /packages/source/c/chainer/chainer-1.5.0.3.tar.gz HTTP/1.1" 200 864778
  Downloading chainer-1.5.0.3.tar.gz (864kB)
  Downloading from URL https://pypi.python.org/packages/source/c/chainer/chainer-1.5.0.3.tar.gz#md5=074d605517c0f09a4de5b8160d8d7fcb (from https://pypi.python.org/simple/chainer/)
    100% |████████████████████████████████| 868kB 1.9MB/s 
  Running setup.py (path:/private/var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/pip-build-q82DlB/chainer/setup.py) egg_info for package chainer
    Running command python setup.py egg_info
    running egg_info
    creating pip-egg-info/chainer.egg-info
    writing requirements to pip-egg-info/chainer.egg-info/requires.txt
    writing pip-egg-info/chainer.egg-info/PKG-INFO
    writing top-level names to pip-egg-info/chainer.egg-info/top_level.txt
    writing dependency_links to pip-egg-info/chainer.egg-info/dependency_links.txt
    writing manifest file 'pip-egg-info/chainer.egg-info/SOURCES.txt'
    warning: manifest_maker: standard file '-c' not found

    Executing cythonize()
    Options: {'profile': False, 'annotate': False, 'linetrace': False, 'no_cuda': False}
    Include directories: ['/Developer/NVIDIA/CUDA-7.5/include', '/usr/local/lib/python2.7/site-packages/numpy/core/include']
    Library directories: ['/Developer/NVIDIA/CUDA-7.5/lib', '/usr/local/cuda/lib']
    creating /var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpQ7Q646/var
    creating /var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpQ7Q646/var/folders
    creating /var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpQ7Q646/var/folders/7s
    creating /var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpQ7Q646/var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn
    creating /var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpQ7Q646/var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T
    creating /var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpQ7Q646/var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpQ7Q646
    clang -fno-strict-aliasing -fno-common -dynamic -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/Developer/NVIDIA/CUDA-7.5/include -I/usr/local/lib/python2.7/site-packages/numpy/core/include -c /var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpQ7Q646/a.cpp -o /var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpQ7Q646/var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpQ7Q646/a.o
    clang -bundle -undefined dynamic_lookup -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk /var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpQ7Q646/var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpQ7Q646/a.o -o /var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpQ7Q646/liba.so
    creating /var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpES2HT1/var
    creating /var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpES2HT1/var/folders
    creating /var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpES2HT1/var/folders/7s
    creating /var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpES2HT1/var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn
    creating /var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpES2HT1/var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T
    creating /var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpES2HT1/var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpES2HT1
    clang -fno-strict-aliasing -fno-common -dynamic -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -c /var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpES2HT1/a.cpp -o /var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpES2HT1/var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpES2HT1/a.o
    clang -bundle -undefined dynamic_lookup -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk /var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpES2HT1/var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpES2HT1/a.o -L/Developer/NVIDIA/CUDA-7.5/lib -L/usr/local/cuda/lib -lcublas -lcuda -lcudart -lcurand -o /var/folders/7s/bhgt7r315qb4n1_yy3y79m8w0000gn/T/tmpES2HT1/liba.so
    ld: file not found: @rpath/CUDA.framework/Versions/A/CUDA for architecture x86_64
    clang: error: linker command failed with exit code 1 (use -v to see invocation)
    **************************************************
    *** Cannot link libraries: ['cublas', 'cuda', 'cudart', 'curand']
    *** Skip installing cuda support
    *** Check your LIBRARY_PATH environment variable
    **************************************************
    ...

yegortk · 2015-12-05T23:01:09Z

Thanks for your help!

tscohen · 2015-12-12T17:03:15Z

I had to reinstall on a clean mac, and ran into the same issue again when compiling from source ("Cannot import name core"). I removed the installation and reinstalled with pip (using --no-cache-dir), which seemed to work yesterday. Today I tried importing cupy again and got this:

In [1]: import cupy
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-9136569de189> in <module>()
----> 1 import cupy

/Users/tsc/anaconda/lib/python2.7/site-packages/cupy/__init__.py in <module>()
      6 
      7 
----> 8 from cupy import binary
      9 from cupy import core
     10 from cupy import creation

/Users/tsc/anaconda/lib/python2.7/site-packages/cupy/binary/__init__.py in <module>()
      3 
      4 # "NOQA" to suppress flake8 warning
----> 5 from cupy.binary import elementwise  # NOQA
      6 from cupy.binary import packing  # NOQA

/Users/tsc/anaconda/lib/python2.7/site-packages/cupy/binary/elementwise.py in <module>()
----> 1 from cupy import core
      2 
      3 
      4 bitwise_and = core.bitwise_and
      5 

/Users/tsc/anaconda/lib/python2.7/site-packages/cupy/core/__init__.py in <module>()
----> 1 from cupy.core import core
      2 
      3 ndarray = core.ndarray
      4 
      5 get_size = core.get_size

ImportError: dlopen(/Users/tsc/anaconda/lib/python2.7/site-packages/cupy/core/core.so, 2): Library not loaded: @rpath/libcublas.7.5.dylib
  Referenced from: /Users/tsc/anaconda/lib/python2.7/site-packages/cupy/core/core.so
  Reason: image not found

Any ideas about what's be going on?

delta2323 · 2015-12-24T04:09:52Z

@tscohen We had released v1.5.1. Does this problem still remain?

tscohen · 2015-12-24T08:34:57Z

I've been running my experiments on a remote linux server and haven't touched my local installation, so yes it still persists. Just tried to uninstall / reinstall with pip but that didn't help.

bhy · 2015-12-24T08:39:18Z

For me, I also need to specify -rpath for it to work on OSX:

LDFLAGS="-rpath /usr/local/cuda/lib/ -F/Library/Frameworks -framework CUDA" pip install --no-cache-dir chainer

tscohen · 2015-12-27T14:06:23Z

Thanks bhy, that seems to work here.

tscohen · 2016-07-08T13:58:54Z

Update: After updating Chainer I got errors again. Specifically, when I do a clean install with "pip install chainer --no-cache-dir -vvvv", I get errors like:

ld: library not found for -lgcc_s.10.5
clang: error: linker command failed with exit code 1 (use -v to see invocation)
**************************************************
*** WARNING: Cannot check CUDA version
*** WARNING: Cannot build a stub file.
Original error: command 'g++' failed with exit status 1
**************************************************

In the end I found a solution in italoag's comment here: nodejs/node#2933

Before installing:

$ cd /usr/local/lib
$ sudo ln -s ../../lib/libSystem.B.dylib libgcc_s.10.5.dylib

Disclaimer: I have no idea what this is doing, or whether it is safe. Try at your own risk.

tscohen mentioned this issue Nov 28, 2015

Cannot install chainer 1.5.0.2 from source #703

Closed

delta2323 added the cat:install Build and installation. label Jan 5, 2016

samehkhamis mentioned this issue Mar 8, 2016

Needed to link with MSVC #1009

Merged

beam2d closed this as completed Mar 29, 2016

ZitengWang mentioned this issue Apr 19, 2016

Cupy compile error with the CUDA #1139

Closed

delta2323 added this to the Closed issues and PRs milestone Jul 26, 2016

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"Cannot import name core" after fresh install (1.5.0.2) #702

"Cannot import name core" after fresh install (1.5.0.2) #702

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"Cannot import name core" after fresh install (1.5.0.2) #702

"Cannot import name core" after fresh install (1.5.0.2) #702

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