error: invalid argument '-std=c++11' not allowed with 'C/ObjC'

[neutronest]

the "invalid argument '-std=c++11' not allowed with 'C/ObjC'" occured when try to use python setup.py install in pytorch_binding.

Full Operation History:

cmake ../ -DWITH_OMP=OFF

the cmake info:

-- The C compiler identification is AppleClang 9.0.0.9000039
-- The CXX compiler identification is AppleClang 9.0.0.9000039
-- Check for working C compiler: /Library/Developer/CommandLineTools/usr/bin/cc
-- Check for working C compiler: /Library/Developer/CommandLineTools/usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /Library/Developer/CommandLineTools/usr/bin/c++
-- Check for working CXX compiler: /Library/Developer/CommandLineTools/usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CUDA_TOOLKIT_ROOT_DIR not found or specified
-- Could NOT find CUDA (missing: CUDA_TOOLKIT_ROOT_DIR CUDA_NVCC_EXECUTABLE CUDA_INCLUDE_DIRS CUDA_CUDART_LIBRARY) (Required is at least version "6.5")
-- cuda found FALSE
CMake Warning at CMakeLists.txt:59 (FIND_PACKAGE):
  By not providing "FindTorch.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "Torch", but
  CMake did not find one.

  Could not find a package configuration file provided by "Torch" with any of
  the following names:

    TorchConfig.cmake
    torch-config.cmake

  Add the installation prefix of "Torch" to CMAKE_PREFIX_PATH or set
  "Torch_DIR" to a directory containing one of the above files.  If "Torch"
  provides a separate development package or SDK, be sure it has been
  installed.


-- Torch found Torch_DIR-NOTFOUND
-- DARWIN_VERSION=17
-- Building shared library with no GPU support
-- Configuring done
-- Generating done
-- Build files have been written to: /Users/cdong/projects/python/warp-ctc/build

make

Scanning dependencies of target warpctc
[ 25%] Building CXX object CMakeFiles/warpctc.dir/src/ctc_entrypoint.cpp.o
[ 50%] Linking CXX shared library libwarpctc.dylib
[ 50%] Built target warpctc
Scanning dependencies of target test_cpu
[ 75%] Building CXX object CMakeFiles/test_cpu.dir/tests/test_cpu.cpp.o
[100%] Linking CXX executable test_cpu
[100%] Built target test_cpu

cd ../pytorch_binding/
python setup.py install

the error occured.

CUDA_HOME not found in the environment so building without GPU support. To build with GPU support please define the CUDA_HOME environment variable. This should be a path which contains include/cuda.h
generating build/_warp_ctc.c
regenerated: 'build/_warp_ctc.c'
running install
running build
running build_py
creating build/lib.macosx-10.6-x86_64-3.5
creating build/lib.macosx-10.6-x86_64-3.5/warpctc_pytorch
copying warpctc_pytorch/__init__.py -> build/lib.macosx-10.6-x86_64-3.5/warpctc_pytorch
running build_ext
building 'warpctc_pytorch._warp_ctc' extension
creating build/temp.macosx-10.6-x86_64-3.5
creating build/temp.macosx-10.6-x86_64-3.5/build
creating build/temp.macosx-10.6-x86_64-3.5/Users
creating build/temp.macosx-10.6-x86_64-3.5/Users/cdong
creating build/temp.macosx-10.6-x86_64-3.5/Users/cdong/projects
creating build/temp.macosx-10.6-x86_64-3.5/Users/cdong/projects/python
creating build/temp.macosx-10.6-x86_64-3.5/Users/cdong/projects/python/warp-ctc
creating build/temp.macosx-10.6-x86_64-3.5/Users/cdong/projects/python/warp-ctc/pytorch_binding
creating build/temp.macosx-10.6-x86_64-3.5/Users/cdong/projects/python/warp-ctc/pytorch_binding/src
/usr/bin/clang -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/Users/cdong/projects/python/dnn-model-ocr/envs/default/include -arch x86_64 -I/Users/cdong/projects/python/dnn-model-ocr/envs/default/include -arch x86_64 -I/Users/cdong/projects/python/dnn-model-ocr/envs/default/lib/python3.5/site-packages/torch/utils/ffi/../../lib/include -I/Users/cdong/projects/python/dnn-model-ocr/envs/default/lib/python3.5/site-packages/torch/utils/ffi/../../lib/include/TH -I/Users/cdong/projects/python/warp-ctc/include -I/Users/cdong/projects/python/dnn-model-ocr/envs/default/include/python3.5m -c build/_warp_ctc.c -o build/temp.macosx-10.6-x86_64-3.5/build/_warp_ctc.o -std=c++11 -fPIC
error: invalid argument '-std=c++11' not allowed with 'C/ObjC'
error: command '/usr/bin/clang' failed with exit status 1

[neutronest]

if use a workaround in pytorch_binding/setup.py

if platform.system() == 'Darwin':
    extra_compile_args = ['-fPIC']
else:
    extra_compile_args = ['-std=c++11', '-fPIC']

can solve this problem. However I don't think this is a good practice.