Could not find Matlab when compiling

[CharlesXinG97]

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Issue summary

Could not find Matlab when compiling, missing: Matlab_MEX_EXTENSION

Steps to reproduce

Makefile.config:

 # This is required only if you will compile the matlab interface.
# MATLAB directory should contain the mex binary in /bin.
 MATLAB_DIR := C:/Program Files/MATLAB/R2017b/bin/
MATLAB_DIR := C:/Program Files/MATLAB/R2017b/bin/

Output in cmd:

Microsoft Windows [版本 10.0.14393]
(c) 2016 Microsoft Corporation。保留所有权利。

C:\Users\dell>e:

E:\>cd caffe

E:\caffe>scripts\build_win.cmd
系统找不到指定的驱动器。
系统找不到指定的驱动器。
INFO: ============================================================
INFO: Summary:
INFO: ============================================================
INFO: MSVC_VERSION               = 14
INFO: WITH_NINJA                 = 1
INFO: CMAKE_GENERATOR            = "Ninja"
INFO: CPU_ONLY                   = 0
INFO: CUDA_ARCH_NAME             = Auto
INFO: CMAKE_CONFIG               = Release
INFO: USE_NCCL                   = 0
INFO: CMAKE_BUILD_SHARED_LIBS    = 0
INFO: PYTHON_VERSION             = 3
INFO: BUILD_PYTHON               = 1
INFO: BUILD_PYTHON_LAYER         = 1
INFO: BUILD_MATLAB               = 1
INFO: PYTHON_EXE                 = "python"
INFO: RUN_TESTS                  = 0
INFO: RUN_LINT                   = 0
INFO: RUN_INSTALL                = 0
INFO: ============================================================
-- Boost version: 1.61.0
-- Found the following Boost libraries:
--   system
--   thread
--   filesystem
--   chrono
--   date_time
--   atomic
-- Found gflags  (include: C:/Users/dell/.caffe/dependencies/libraries_v140_x64_py35_1.1.0/libraries/include, library: gflags_shared)
-- Found glog    (include: C:/Users/dell/.caffe/dependencies/libraries_v140_x64_py35_1.1.0/libraries/include, library: glog)
-- Found PROTOBUF Compiler: C:/Users/dell/.caffe/dependencies/libraries_v140_x64_py35_1.1.0/libraries/bin/protoc.exe
-- Found lmdb    (include: C:/Users/dell/.caffe/dependencies/libraries_v140_x64_py35_1.1.0/libraries/include, library: lmdb)
-- Found LevelDB (include: C:/Users/dell/.caffe/dependencies/libraries_v140_x64_py35_1.1.0/libraries/include, library: leveldb)
-- Found Snappy  (include: C:/Users/dell/.caffe/dependencies/libraries_v140_x64_py35_1.1.0/libraries/include, library: snappy_static;optimized;C:/Users/dell/.caffe/dependencies/libraries_v140_x64_py35_1.1.0/libraries/lib/caffezlib.lib;debug;C:/Users/dell/.caffe/dependencies/libraries_v140_x64_py35_1.1.0/libraries/lib/caffezlibd.lib)
-- CUDA detected: 8.0
-- Found cuDNN: ver. 5.1.10 found (include: C:/cuda1/include, library: C:/cuda1/lib/x64/cudnn.lib)
-- Added CUDA NVCC flags for: sm_50
-- OpenCV found (C:/Users/dell/.caffe/dependencies/libraries_v140_x64_py35_1.1.0/libraries)
-- Found OpenBLAS libraries: C:/Users/dell/.caffe/dependencies/libraries_v140_x64_py35_1.1.0/libraries/lib/libopenblas.dll.a
-- Found OpenBLAS include: C:/Users/dell/.caffe/dependencies/libraries_v140_x64_py35_1.1.0/libraries/include
-- NumPy ver. 1.13.1 found (include: C:/Users/dell/AppData/Local/Programs/Python/Python35/lib/site-packages/numpy/core/include)
-- Boost version: 1.61.0
-- Found the following Boost libraries:
--   python
-- Could NOT find Matlab (missing: Matlab_MEX_EXTENSION) (found version "8.6")
--
-- ******************* Caffe Configuration Summary *******************
-- General:
--   Version           :   1.0.0
--   Git               :   1.0-109-g28ca8145-dirty
--   System            :   Windows
--   C++ compiler      :   F:/Program Files (x86)/Microsoft Visual Studio 14.0/VC/bin/amd64/cl.exe
--   Release CXX flags :   /MD /O2 /Ob2 /DNDEBUG /FS /DWIN32 /D_WINDOWS /W3 /GR /EHsc /FS
--   Debug CXX flags   :   /MDd /Zi /Ob0 /Od /RTC1 /FS /DWIN32 /D_WINDOWS /W3 /GR /EHsc /FS
--   Build type        :   Release
--
--   BUILD_SHARED_LIBS :   0
--   BUILD_python      :   1
--   BUILD_matlab      :   1
--   BUILD_docs        :
--   CPU_ONLY          :   0
--   USE_OPENCV        :   ON
--   USE_LEVELDB       :   ON
--   USE_LMDB          :   ON
--   USE_NCCL          :   0
--   ALLOW_LMDB_NOLOCK :   OFF
--
-- Dependencies:
--   BLAS              :   Yes (Open)
--   Boost             :   Yes (ver. 1.61)
--   glog              :   Yes
--   gflags            :   Yes
--   protobuf          :   Yes (ver. 3.1.0)
--   lmdb              :   Yes (ver. 0.9.70)
--   LevelDB           :   Yes (ver. 1.18)
--   Snappy            :   Yes (ver. 1.1.1)
--   OpenCV            :   Yes (ver. 3.1.0)
--   CUDA              :   Yes (ver. 8.0)
--
-- NVIDIA CUDA:
--   Target GPU(s)     :   Auto
--   GPU arch(s)       :   sm_50
--   cuDNN             :   Yes (ver. 5.1.10)
--
-- Python:
--   Interpreter       :   C:/Users/dell/AppData/Local/Programs/Python/Python35/python.exe (ver. 3.5.3)
--   Libraries         :   C:/Users/dell/AppData/Local/Programs/Python/Python35/libs/python35.lib (ver 3.5.3)
--   NumPy             :   C:/Users/dell/AppData/Local/Programs/Python/Python35/lib/site-packages/numpy/core/include (ver 1.13.1)
--
-- Matlab:
--   Matlab            :   No
--   Octave            :   No
--
-- Install:
--   Install path      :   E:/caffe/build/install
--
-- Configuring done
-- Generating done
-- Build files have been written to: E:/caffe/build
ninja: no work to do.

E:\caffe>

Your system configuration

Operating system: win10
Compiler: cmake/ninja
CUDA version (if applicable):
CUDNN version (if applicable):
BLAS:
Python or MATLAB version (for pycaffe and matcaffe respectively):

[Noiredd]

I've never built Caffe for MATLAB myself but from that message:
# MATLAB directory should contain the mex binary in /bin.
I would assume that your MATLAB directory should contain bin. So when you set it to:
MATLAB_DIR := C:/Program Files/MATLAB/R2017b/bin/
the build system is actually looking for C:/Program Files/MATLAB/R2017b/bin/bin.

Still, please do not post usage, installation, or modeling questions, or other requests for help to Issues. Use the caffe-users list instead. This helps developers maintain a clear, uncluttered, and efficient view of the state of Caffe. Please read the guidelines for contributing before submitting an issue or a pull request.