[Python][C++] CI Failing for Python 2.7 and 3.6 with valgrind

https://travis-ci.org/apache/arrow/jobs/488317992

The error appears to be some sort of linker or warning as error issue?:

{{cc1plus: warning: command line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++
cc1plus: warning: command line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++
In file included from /home/travis/build/apache/arrow/python/pyarrow/include/arrow/python/platform.h:26:0,
from pyarrow_cython_example.cpp:653:
/home/travis/build/apache/arrow/pyarrow-test-2.7/include/python2.7/datetime.h:188:25: warning: ‘PyDateTimeAPI’ defined but not used [-Wunused-variable]
static PyDateTime_CAPI *PyDateTimeAPI = NULL;
^
pyarrow_cython_example.cpp:2828:20: warning: ‘__pyx_f_7pyarrow_3lib_pyarrow_wrap_array’ defined but not used [-Wunused-variable]
static PyObject (__pyx_f_7pyarrow_3lib_pyarrow_wrap_array)(std::shared_ptr< arrow::Array> const &); /proto/
^
pyarrow_cython_example.cpp:2829:20: warning: ‘__pyx_f_7pyarrow_3lib_pyarrow_wrap_chunked_array’ defined but not used [-Wunused-variable]
static PyObject (__pyx_f_7pyarrow_3lib_pyarrow_wrap_chunked_array)(std::shared_ptr< arrow::ChunkedArray> const &); /proto/
^
pyarrow_cython_example.cpp:2830:20: warning: ‘__pyx_f_7pyarrow_3lib_pyarrow_wrap_batch’ defined but not used [-Wunused-variable]
static PyObject (__pyx_f_7pyarrow_3lib_pyarrow_wrap_batch)(std::shared_ptr< arrow::RecordBatch> const &); /proto/
^
pyarrow_cython_example.cpp:2831:20: warning: ‘__pyx_f_7pyarrow_3lib_pyarrow_wrap_buffer’ defined but not used [-Wunused-variable]
static PyObject (__pyx_f_7pyarrow_3lib_pyarrow_wrap_buffer)(std::shared_ptr< arrow::Buffer> const &); /proto/
^
pyarrow_cython_example.cpp:2832:20: warning: ‘__pyx_f_7pyarrow_3lib_pyarrow_wrap_column’ defined but not used [-Wunused-variable]
static PyObject (__pyx_f_7pyarrow_3lib_pyarrow_wrap_column)(std::shared_ptr< arrow::Column> const &); /proto/
^
pyarrow_cython_example.cpp:2833:20: warning: ‘__pyx_f_7pyarrow_3lib_pyarrow_wrap_data_type’ defined but not used [-Wunused-variable]
static PyObject (__pyx_f_7pyarrow_3lib_pyarrow_wrap_data_type)(std::shared_ptr< arrow::DataType> const &); /proto/
^
pyarrow_cython_example.cpp:2834:20: warning: ‘__pyx_f_7pyarrow_3lib_pyarrow_wrap_field’ defined but not used [-Wunused-variable]
static PyObject (__pyx_f_7pyarrow_3lib_pyarrow_wrap_field)(std::shared_ptr< arrow::Field> const &); /proto/
^
pyarrow_cython_example.cpp:2835:20: warning: ‘__pyx_f_7pyarrow_3lib_pyarrow_wrap_resizable_buffer’ defined but not used [-Wunused-variable]
static PyObject (__pyx_f_7pyarrow_3lib_pyarrow_wrap_resizable_buffer)(std::shared_ptr< arrow::ResizableBuffer> const &); /proto/
^
pyarrow_cython_example.cpp:2836:20: warning: ‘__pyx_f_7pyarrow_3lib_pyarrow_wrap_schema’ defined but not used [-Wunused-variable]
static PyObject (__pyx_f_7pyarrow_3lib_pyarrow_wrap_schema)(std::shared_ptr< arrow::Schema> const &); /proto/
^
pyarrow_cython_example.cpp:2837:20: warning: ‘__pyx_f_7pyarrow_3lib_pyarrow_wrap_table’ defined but not used [-Wunused-variable]
static PyObject (__pyx_f_7pyarrow_3lib_pyarrow_wrap_table)(std::shared_ptr< arrow::Table> const &); /proto/
^
pyarrow_cython_example.cpp:2838:20: warning: ‘__pyx_f_7pyarrow_3lib_pyarrow_wrap_tensor’ defined but not used [-Wunused-variable]
static PyObject (__pyx_f_7pyarrow_3lib_pyarrow_wrap_tensor)(std::shared_ptr< arrow::Tensor> const &); /proto/
^
pyarrow_cython_example.cpp:2840:47: warning: ‘__pyx_f_7pyarrow_3lib_pyarrow_unwrap_batch’ defined but not used [-Wunused-variable]
static std::shared_ptr< arrow::RecordBatch> (__pyx_f_7pyarrow_3lib_pyarrow_unwrap_batch)(PyObject *); /*proto/
^
pyarrow_cython_example.cpp:2841:42: warning: ‘__pyx_f_7pyarrow_3lib_pyarrow_unwrap_buffer’ defined but not used [-Wunused-variable]
static std::shared_ptr< arrow::Buffer> (__pyx_f_7pyarrow_3lib_pyarrow_unwrap_buffer)(PyObject *); /*proto/
^
pyarrow_cython_example.cpp:2842:42: warning: ‘__pyx_f_7pyarrow_3lib_pyarrow_unwrap_column’ defined but not used [-Wunused-variable]
static std::shared_ptr< arrow::Column> (__pyx_f_7pyarrow_3lib_pyarrow_unwrap_column)(PyObject *); /*proto/
^
pyarrow_cython_example.cpp:2843:44: warning: ‘__pyx_f_7pyarrow_3lib_pyarrow_unwrap_data_type’ defined but not used [-Wunused-variable]
static std::shared_ptr< arrow::DataType> (__pyx_f_7pyarrow_3lib_pyarrow_unwrap_data_type)(PyObject *); /*proto/
^
pyarrow_cython_example.cpp:2844:41: warning: ‘__pyx_f_7pyarrow_3lib_pyarrow_unwrap_field’ defined but not used [-Wunused-variable]
static std::shared_ptr< arrow::Field> (__pyx_f_7pyarrow_3lib_pyarrow_unwrap_field)(PyObject *); /*proto/
^
pyarrow_cython_example.cpp:2845:42: warning: ‘__pyx_f_7pyarrow_3lib_pyarrow_unwrap_schema’ defined but not used [-Wunused-variable]
static std::shared_ptr< arrow::Schema> (__pyx_f_7pyarrow_3lib_pyarrow_unwrap_schema)(PyObject *); /*proto/
^
pyarrow_cython_example.cpp:2846:41: warning: ‘__pyx_f_7pyarrow_3lib_pyarrow_unwrap_table’ defined but not used [-Wunused-variable]
static std::shared_ptr< arrow::Table> (__pyx_f_7pyarrow_3lib_pyarrow_unwrap_table)(PyObject *); /*proto/
^
pyarrow_cython_example.cpp:2847:42: warning: ‘__pyx_f_7pyarrow_3lib_pyarrow_unwrap_tensor’ defined but not used [-Wunused-variable]
static std::shared_ptr< arrow::Tensor> (__pyx_f_7pyarrow_3lib_pyarrow_unwrap_tensor)(PyObject *); /*proto/
^
/home/travis/build/apache/arrow/pyarrow-test-2.7/compiler_compat/ld: build/temp.linux-x86_64-2.7/pyarrow_cython_example.o: unable to initialize decompress status for section .debug_info
/home/travis/build/apache/arrow/pyarrow-test-2.7/compiler_compat/ld: build/temp.linux-x86_64-2.7/pyarrow_cython_example.o: unable to initialize decompress status for section .debug_info
/home/travis/build/apache/arrow/pyarrow-test-2.7/compiler_compat/ld: build/temp.linux-x86_64-2.7/pyarrow_cython_example.o: unable to initialize decompress status for section .debug_info
/home/travis/build/apache/arrow/pyarrow-test-2.7/compiler_compat/ld: build/temp.linux-x86_64-2.7/pyarrow_cython_example.o: unable to initialize decompress status for section .debug_info
build/temp.linux-x86_64-2.7/pyarrow_cython_example.o: file not recognized: file format not recognized
collect2: error: ld returned 1 exit status
error: command 'g++' failed with exit status 1

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