Repository: pytorch
Issue: FATAL_ERROR "Failed to determine the source files for the regular expression backend"
Labels: module: build,triaged,module: third_party

Using
```
$ git describe --tags
v1.4.0a0-734-gf2a35db
```
I have set the following variables
```
$ export CUDA_HOME=/storage/users/mnaderan/cuda-10.1.168/
$ export NCCL_ROOT=/storage/users/mnaderan/nccl_2.4.8-1/
$ export CUDNN_INCLUDE_DIR=/storage/users/mnaderan/cudnn/include/
$ export CUDNN_LIB_DIR=/storage/users/mnaderan/cudnn/lib/
$ export CC=/storage/users/mnaderan/tools/gcc-6.1.0/bin/gcc
$ export CXX=/storage/users/mnaderan/tools/gcc-6.1.0/bin/g++
$ export Numa_INCLUDE_DIR=/storage/users/mnaderan/tools/numa-dev/include/
$ export Numa_LIBRARIES=/storage/users/mnaderan/tools/numa-dev/lib64/ 
```

However, the setup.py command fails with this error:

```
CMake Error at third_party/benchmark/CMakeLists.txt:231 (message):
  Failed to determine the source files for the regular expression backend
```
This is a problem with cxx feature check according to that line
```
# C++ feature checks
# Determine the correct regular expression engine to use
cxx_feature_check(STD_REGEX)
cxx_feature_check(GNU_POSIX_REGEX)
cxx_feature_check(POSIX_REGEX)
if(NOT HAVE_STD_REGEX AND NOT HAVE_GNU_POSIX_REGEX AND NOT HAVE_POSIX_REGEX)
  message(FATAL_ERROR "Failed to determine the source files for the regular expression backend")
endif()
```
I can not further narrow the issue since there is no verbosity for that error. How can I generate more info?


The complete build output is shown below

```
$ python setup.py install --user
Building wheel torch-1.4.0a0+f2a35db
-- Building version 1.4.0a0+f2a35db
cmake -DBUILD_PYTHON=True -DBUILD_TEST=True -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/storage/users/mnaderan/pt/pytorch/torch -DCMAKE_PREFIX_PATH=/usr/lib/python2.7/site-packages -DCUDNN_INCLUDE_DIR=/storage/users/mnaderan/cudnn/include/ -DCUDNN_LIBRARY=/storage/users/mnaderan/cudnn/lib/ -DNUMPY_INCLUDE_DIR=/storage/users/mnaderan/.local/lib/python2.7/site-packages/numpy/core/include -DPYTHON_EXECUTABLE=/bin/python -DPYTHON_INCLUDE_DIR=/usr/include/python2.7 -DPYTHON_LIBRARY=/usr/lib64/libpython2.7.so.1.0 -DTORCH_BUILD_VERSION=1.4.0a0+f2a35db -DUSE_CUDA=True -DUSE_NUMPY=True /storage/users/mnaderan/pt/pytorch
-- The CXX compiler identification is GNU 6.1.0
-- The C compiler identification is GNU 6.1.0
-- Check for working CXX compiler: /storage/users/mnaderan/tools/gcc-6.1.0/bin/g++
-- Check for working CXX compiler: /storage/users/mnaderan/tools/gcc-6.1.0/bin/g++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Check for working C compiler: /storage/users/mnaderan/tools/gcc-6.1.0/bin/gcc
-- Check for working C compiler: /storage/users/mnaderan/tools/gcc-6.1.0/bin/gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Not forcing any particular BLAS to be found
-- Performing Test COMPILER_WORKS
-- Performing Test COMPILER_WORKS - Success
-- Performing Test SUPPORT_GLIBCXX_USE_C99
-- Performing Test SUPPORT_GLIBCXX_USE_C99 - Success
-- Performing Test CAFFE2_EXCEPTION_PTR_SUPPORTED
-- Performing Test CAFFE2_EXCEPTION_PTR_SUPPORTED - Success
-- std::exception_ptr is supported.
-- Performing Test CAFFE2_IS_NUMA_AVAILABLE
-- Performing Test CAFFE2_IS_NUMA_AVAILABLE - Failed
-- NUMA is not available
-- Performing Test CAFFE2_NEED_TO_TURN_OFF_DEPRECATION_WARNING
-- Performing Test CAFFE2_NEED_TO_TURN_OFF_DEPRECATION_WARNING - Failed
-- Turning off deprecation warning due to glog.
-- Performing Test CAFFE2_COMPILER_SUPPORTS_AVX2_EXTENSIONS
-- Performing Test CAFFE2_COMPILER_SUPPORTS_AVX2_EXTENSIONS - Success
-- Current compiler supports avx2 extension. Will build perfkernels.
-- Performing Test CAFFE2_COMPILER_SUPPORTS_AVX512_EXTENSIONS
-- Performing Test CAFFE2_COMPILER_SUPPORTS_AVX512_EXTENSIONS - Success
-- Current compiler supports avx512f extension. Will build fbgemm.
-- Performing Test COMPILER_SUPPORTS_HIDDEN_VISIBILITY
-- Performing Test COMPILER_SUPPORTS_HIDDEN_VISIBILITY - Success
-- Performing Test COMPILER_SUPPORTS_HIDDEN_INLINE_VISIBILITY
-- Performing Test COMPILER_SUPPORTS_HIDDEN_INLINE_VISIBILITY - Success
-- Performing Test COMPILER_SUPPORTS_RDYNAMIC
-- Performing Test COMPILER_SUPPORTS_RDYNAMIC - Success
-- Building using own protobuf under third_party per request.
-- Use custom protobuf build.
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE
-- Caffe2 protobuf include directory: $<BUILD_INTERFACE:/storage/users/mnaderan/pt/pytorch/third_party/protobuf/src>$<INSTALL_INTERFACE:include>
-- Trying to find preferred BLAS backend of choice: MKL
-- MKL_THREADING = OMP
-- Looking for sys/types.h
-- Looking for sys/types.h - found
-- Looking for stdint.h
-- Looking for stdint.h - found
-- Looking for stddef.h
-- Looking for stddef.h - found
-- Check size of void*
-- Check size of void* - done
-- MKL_THREADING = OMP
CMake Warning at cmake/Dependencies.cmake:141 (message):
  MKL could not be found.  Defaulting to Eigen
Call Stack (most recent call first):
  CMakeLists.txt:378 (include)


CMake Warning at cmake/Dependencies.cmake:160 (message):
  Preferred BLAS (MKL) cannot be found, now searching for a general BLAS
  library
Call Stack (most recent call first):
  CMakeLists.txt:378 (include)


-- MKL_THREADING = OMP
-- Checking for [mkl_intel_lp64 - mkl_gnu_thread - mkl_core - gomp - pthread - m - dl]
--   Library mkl_intel_lp64: not found
-- Checking for [mkl_intel_lp64 - mkl_intel_thread - mkl_core - gomp - pthread - m - dl]
--   Library mkl_intel_lp64: not found
-- Checking for [mkl_intel - mkl_gnu_thread - mkl_core - gomp - pthread - m - dl]
--   Library mkl_intel: not found
-- Checking for [mkl_intel - mkl_intel_thread - mkl_core - gomp - pthread - m - dl]
--   Library mkl_intel: not found
-- Checking for [mkl_gf_lp64 - mkl_gnu_thread - mkl_core - gomp - pthread - m - dl]
--   Library mkl_gf_lp64: not found
-- Checking for [mkl_gf_lp64 - mkl_intel_thread - mkl_core - gomp - pthread - m - dl]
--   Library mkl_gf_lp64: not found
-- Checking for [mkl_gf - mkl_gnu_thread - mkl_core - gomp - pthread - m - dl]
--   Library mkl_gf: not found
-- Checking for [mkl_gf - mkl_intel_thread - mkl_core - gomp - pthread - m - dl]
--   Library mkl_gf: not found
-- Checking for [mkl_intel_lp64 - mkl_gnu_thread - mkl_core - iomp5 - pthread - m - dl]
--   Library mkl_intel_lp64: not found
-- Checking for [mkl_intel_lp64 - mkl_intel_thread - mkl_core - iomp5 - pthread - m - dl]
--   Library mkl_intel_lp64: not found
-- Checking for [mkl_intel - mkl_gnu_thread - mkl_core - iomp5 - pthread - m - dl]
--   Library mkl_intel: not found
-- Checking for [mkl_intel - mkl_intel_thread - mkl_core - iomp5 - pthread - m - dl]
--   Library mkl_intel: not found
-- Checking for [mkl_gf_lp64 - mkl_gnu_thread - mkl_core - iomp5 - pthread - m - dl]
--   Library mkl_gf_lp64: not found
-- Checking for [mkl_gf_lp64 - mkl_intel_thread - mkl_core - iomp5 - pthread - m - dl]
--   Library mkl_gf_lp64: not found
-- Checking for [mkl_gf - mkl_gnu_thread - mkl_core - iomp5 - pthread - m - dl]
--   Library mkl_gf: not found
-- Checking for [mkl_gf - mkl_intel_thread - mkl_core - iomp5 - pthread - m - dl]
--   Library mkl_gf: not found
-- Checking for [mkl_intel_lp64 - mkl_gnu_thread - mkl_core - pthread - m - dl]
--   Library mkl_intel_lp64: not found
-- Checking for [mkl_intel_lp64 - mkl_intel_thread - mkl_core - pthread - m - dl]
--   Library mkl_intel_lp64: not found
-- Checking for [mkl_intel - mkl_gnu_thread - mkl_core - pthread - m - dl]
--   Library mkl_intel: not found
-- Checking for [mkl_intel - mkl_intel_thread - mkl_core - pthread - m - dl]
--   Library mkl_intel: not found
-- Checking for [mkl_gf_lp64 - mkl_gnu_thread - mkl_core - pthread - m - dl]
--   Library mkl_gf_lp64: not found
-- Checking for [mkl_gf_lp64 - mkl_intel_thread - mkl_core - pthread - m - dl]
--   Library mkl_gf_lp64: not found
-- Checking for [mkl_gf - mkl_gnu_thread - mkl_core - pthread - m - dl]
--   Library mkl_gf: not found
-- Checking for [mkl_gf - mkl_intel_thread - mkl_core - pthread - m - dl]
--   Library mkl_gf: not found
-- Checking for [mkl_intel_lp64 - mkl_sequential - mkl_core - m - dl]
--   Library mkl_intel_lp64: not found
-- Checking for [mkl_intel - mkl_sequential - mkl_core - m - dl]
--   Library mkl_intel: not found
-- Checking for [mkl_gf_lp64 - mkl_sequential - mkl_core - m - dl]
--   Library mkl_gf_lp64: not found
-- Checking for [mkl_gf - mkl_sequential - mkl_core - m - dl]
--   Library mkl_gf: not found
-- Checking for [mkl_intel_lp64 - mkl_core - gomp - pthread - m - dl]
--   Library mkl_intel_lp64: not found
-- Checking for [mkl_intel - mkl_core - gomp - pthread - m - dl]
--   Library mkl_intel: not found
-- Checking for [mkl_gf_lp64 - mkl_core - gomp - pthread - m - dl]
--   Library mkl_gf_lp64: not found
-- Checking for [mkl_gf - mkl_core - gomp - pthread - m - dl]
--   Library mkl_gf: not found
-- Checking for [mkl_intel_lp64 - mkl_core - iomp5 - pthread - m - dl]
--   Library mkl_intel_lp64: not found
-- Checking for [mkl_intel - mkl_core - iomp5 - pthread - m - dl]
--   Library mkl_intel: not found
-- Checking for [mkl_gf_lp64 - mkl_core - iomp5 - pthread - m - dl]
--   Library mkl_gf_lp64: not found
-- Checking for [mkl_gf - mkl_core - iomp5 - pthread - m - dl]
--   Library mkl_gf: not found
-- Checking for [mkl_intel_lp64 - mkl_core - pthread - m - dl]
--   Library mkl_intel_lp64: not found
-- Checking for [mkl_intel - mkl_core - pthread - m - dl]
--   Library mkl_intel: not found
-- Checking for [mkl_gf_lp64 - mkl_core - pthread - m - dl]
--   Library mkl_gf_lp64: not found
-- Checking for [mkl_gf - mkl_core - pthread - m - dl]
--   Library mkl_gf: not found
-- Checking for [mkl - guide - pthread - m]
--   Library mkl: not found
-- MKL library not found
-- Checking for [Accelerate]
--   Library Accelerate: BLAS_Accelerate_LIBRARY-NOTFOUND
-- Checking for [vecLib]
--   Library vecLib: BLAS_vecLib_LIBRARY-NOTFOUND
-- Checking for [openblas]
--   Library openblas: /usr/lib64/libopenblas.so
-- Looking for sgemm_
-- Looking for sgemm_ - found
-- Performing Test BLAS_F2C_DOUBLE_WORKS
-- Performing Test BLAS_F2C_DOUBLE_WORKS - Failed
-- Performing Test BLAS_F2C_FLOAT_WORKS
-- Performing Test BLAS_F2C_FLOAT_WORKS - Success
-- Performing Test BLAS_USE_CBLAS_DOT
-- Performing Test BLAS_USE_CBLAS_DOT - Success
-- Found a library with BLAS API (open).
-- The ASM compiler identification is GNU
-- Found assembler: /storage/users/mnaderan/tools/gcc-6.1.0/bin/gcc
-- Check if compiler accepts -pthread
-- Check if compiler accepts -pthread - yes
-- Brace yourself, we are building NNPACK
-- Performing Test NNPACK_ARCH_IS_X86_32
-- Performing Test NNPACK_ARCH_IS_X86_32 - Failed
-- Found PythonInterp: /bin/python (found version "2.7.5")
-- NNPACK backend is x86-64
-- Failed to find LLVM FileCheck
-- Found Git: /bin/git (found version "1.8.3.1")
-- git Version: v1.4.0-505be96a
-- Version: 1.4.0
-- Performing Test HAVE_CXX_FLAG_STD_CXX11
-- Performing Test HAVE_CXX_FLAG_STD_CXX11 - Success
-- Performing Test HAVE_CXX_FLAG_WALL
-- Performing Test HAVE_CXX_FLAG_WALL - Success
-- Performing Test HAVE_CXX_FLAG_WEXTRA
-- Performing Test HAVE_CXX_FLAG_WEXTRA - Success
-- Performing Test HAVE_CXX_FLAG_WSHADOW
-- Performing Test HAVE_CXX_FLAG_WSHADOW - Success
-- Performing Test HAVE_CXX_FLAG_WERROR
-- Performing Test HAVE_CXX_FLAG_WERROR - Success
-- Performing Test HAVE_CXX_FLAG_PEDANTIC
-- Performing Test HAVE_CXX_FLAG_PEDANTIC - Success
-- Performing Test HAVE_CXX_FLAG_PEDANTIC_ERRORS
-- Performing Test HAVE_CXX_FLAG_PEDANTIC_ERRORS - Success
-- Performing Test HAVE_CXX_FLAG_WSHORTEN_64_TO_32
-- Performing Test HAVE_CXX_FLAG_WSHORTEN_64_TO_32 - Failed
-- Performing Test HAVE_CXX_FLAG_WFLOAT_EQUAL
-- Performing Test HAVE_CXX_FLAG_WFLOAT_EQUAL - Success
-- Performing Test HAVE_CXX_FLAG_FSTRICT_ALIASING
-- Performing Test HAVE_CXX_FLAG_FSTRICT_ALIASING - Success
-- Performing Test HAVE_CXX_FLAG_WNO_DEPRECATED_DECLARATIONS
-- Performing Test HAVE_CXX_FLAG_WNO_DEPRECATED_DECLARATIONS - Success
-- Performing Test HAVE_CXX_FLAG_WSTRICT_ALIASING
-- Performing Test HAVE_CXX_FLAG_WSTRICT_ALIASING - Success
-- Performing Test HAVE_CXX_FLAG_WD654
-- Performing Test HAVE_CXX_FLAG_WD654 - Failed
-- Performing Test HAVE_CXX_FLAG_WTHREAD_SAFETY
-- Performing Test HAVE_CXX_FLAG_WTHREAD_SAFETY - Failed
-- Performing Test HAVE_CXX_FLAG_COVERAGE
-- Performing Test HAVE_CXX_FLAG_COVERAGE - Success
-- Performing Test HAVE_STD_REGEX
-- Performing Test HAVE_STD_REGEX
-- Performing Test HAVE_STD_REGEX -- compiled but failed to run
-- Performing Test HAVE_GNU_POSIX_REGEX
-- Performing Test HAVE_GNU_POSIX_REGEX
-- Performing Test HAVE_GNU_POSIX_REGEX -- failed to compile
-- Performing Test HAVE_POSIX_REGEX
-- Performing Test HAVE_POSIX_REGEX
-- Performing Test HAVE_POSIX_REGEX -- compiled but failed to run
CMake Error at third_party/benchmark/CMakeLists.txt:231 (message):
  Failed to determine the source files for the regular expression backend


-- Configuring incomplete, errors occurred!
See also "/storage/users/mnaderan/pt/pytorch/build/CMakeFiles/CMakeOutput.log".
See also "/storage/users/mnaderan/pt/pytorch/build/CMakeFiles/CMakeError.log".
Traceback (most recent call last):
  File "setup.py", line 751, in <module>
    build_deps()
  File "setup.py", line 310, in build_deps
    cmake=cmake)
  File "/storage/users/mnaderan/pt/pytorch/tools/build_pytorch_libs.py", line 56, in build_caffe2
    rerun_cmake)
  File "/storage/users/mnaderan/pt/pytorch/tools/setup_helpers/cmake.py", line 318, in generate
    self.run(args, env=my_env)
  File "/storage/users/mnaderan/pt/pytorch/tools/setup_helpers/cmake.py", line 142, in run
    check_call(command, cwd=self.build_dir, env=env)
  File "/usr/lib64/python2.7/subprocess.py", line 542, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['cmake', '-DBUILD_PYTHON=True', '-DBUILD_TEST=True', '-DCMAKE_BUILD_TYPE=Release', '-DCMAKE_INSTALL_PREFIX=/storage/users/mnaderan/pt/pytorch/torch', '-DCMAKE_PREFIX_PATH=/usr/lib/python2.7/site-packages', '-DCUDNN_INCLUDE_DIR=/storage/users/mnaderan/cudnn/include/', '-DCUDNN_LIBRARY=/storage/users/mnaderan/cudnn/lib/', '-DNUMPY_INCLUDE_DIR=/storage/users/mnaderan/.local/lib/python2.7/site-packages/numpy/core/include', '-DPYTHON_EXECUTABLE=/bin/python', '-DPYTHON_INCLUDE_DIR=/usr/include/python2.7', '-DPYTHON_LIBRARY=/usr/lib64/libpython2.7.so.1.0', '-DTORCH_BUILD_VERSION=1.4.0a0+f2a35db', '-DUSE_CUDA=True', '-DUSE_NUMPY=True', '/storage/users/mnaderan/pt/pytorch']' returned non-zero exit status 1
```
Thanks for any idea.