MEX file maker not working when using < thread > header

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I've made a fast version of accumarray in C++ and am trying to make a MEX file for it, but it is not working.
I can compile my code in MinGW via "g++ -m64 -std=c++11 -o accum Accumarray5.cpp"
The problem seems to be that I have included the header < thread > for its functions. I attempt to compile the MEX function in MATLAB using:
mex -v COMPFLAGS='$COMPFLAGS -std=c++11' Accumarray5.cpp
The error I get is:
Error using mex
In file included from C:/MATLAB/SupportPackages/R2015b/MW_MinGW_4_9/lib/gcc/x86_64-w64-mingw32/4.9.2/include/c++/thread:35:0,
from F:\Desktop\matlab codes\Radiation2\Accumarray5.cpp:6:
C:/MATLAB/SupportPackages/R2015b/MW_MinGW_4_9/lib/gcc/x86_64-w64-mingw32/4.9.2/include/c++/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support is currently experimental, and must be enabled with the -std=c++11 or
-std=gnu++11 compiler options.
#error This file requires compiler and library support for the \
^
F:\Desktop\matlab codes\Radiation2\Accumarray5.cpp: In function 'void mexFunction(int, char**)':
F:\Desktop\matlab codes\Radiation2\Accumarray5.cpp:167:9: error: 'thread' was not declared in this scope
thread t[thread_num]; // thread t[MAX_THREAD];
^
F:\Desktop\matlab codes\Radiation2\Accumarray5.cpp:172:53: error: 't' was not declared in this scope
t[i] = thread(accumulate, ind[k], vals[k], startind, endind, tmpSum[i]); }
^
F:\Desktop\matlab codes\Radiation2\Accumarray5.cpp:174:53: error: 't' was not declared in this scope
for (int i = 0; i < thread_num; ++i) { t[i].join(); // wait for threads to finish execution
^
The undeclared variables it is complaining about should not a problem because the functionality is described in the < thread > header.
Does anyone know what is wrong?
The other info spit out after my attempt at MEX file generation is:
Verbose mode is on.
Neither -compatibleArrayDims nor -largeArrayDims is selected.
Using -compatibleArrayDims. In the future, MATLAB will require the use of
-largeArrayDims and remove the -compatibleArrayDims option.
For more information:
http://www.mathworks.com/help/matlab/matlab_external/upgrading-mex-files-to-use-64-bit-api.html.
... Looking for compiler 'MinGW64 Compiler (C++)' ...
... Looking for environment variable 'MW_MINGW64_LOC' ...Yes ('C:\MATLAB\SupportPackages\R2015b\MW_MinGW_4_9').
... Looking for file 'C:\MATLAB\SupportPackages\R2015b\MW_MinGW_4_9\bin\g++.exe' ...Yes.
... Looking for folder 'C:\MATLAB\SupportPackages\R2015b\MW_MinGW_4_9\' ...Yes.
Found installed compiler 'MinGW64 Compiler (C++)'.
Set PATH = C:\MATLAB\SupportPackages\R2015b\MW_MinGW_4_9\\bin;C:\Program Files\MATLAB\R2015b\extern\include\win64;C:\Program Files\MATLAB\R2015b\extern\include;C:\Program Files\MATLAB\R2015b\simulink\include;C:\Program Files\MATLAB\R2015b\lib\win64;C:\Program Files\mingw-w64\x86_64-7.2.0-posix-seh-rt_v5-rev1\mingw64\bin;C:\ProgramData\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\MATLAB\R2015b\runtime\win64;C:\Program Files\MATLAB\R2015b\bin;C:\Program Files (x86)\MiKTeX 2.9\miktex\bin\;C:\Program Files (x86)\QuickTime\QTSystem\;C:\Users\Christopher\AppData\Local\Smartbar\Application\;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program Files\Git\cmd;C:\Program Files (x86)\Windows Kits\8.1\Windows Performance Toolkit\;C:\Program Files\Microsoft SQL Server\110\Tools\Binn\;C:\TDM-GCC-64\bin;C:\Program Files (x86)\Skype\Phone\;;C:\Program Files\Docker Toolbox;C:\TDM-GCC-64\bin;
Set INCLUDE = C:\MATLAB\SupportPackages\R2015b\MW_MinGW_4_9\\include;
Set LIB = C:\MATLAB\SupportPackages\R2015b\MW_MinGW_4_9\\lib;;
Set MW_TARGET_ARCH = win64;
Set LIBPATH = C:\Program Files\MATLAB\R2015b\extern\lib\win64;
Options file details
-------------------------------------------------------------------
Compiler location: C:\MATLAB\SupportPackages\R2015b\MW_MinGW_4_9\
Options file: C:\Users\Christopher\AppData\Roaming\MathWorks\MATLAB\R2015b\mex_C++_win64.xml
CMDLINE1 : C:\MATLAB\SupportPackages\R2015b\MW_MinGW_4_9\\bin\g++ -c -DMX_COMPAT_32 -m64 -DMATLAB_MEX_FILE -I"C:\Program Files\MATLAB\R2015b/extern/include" -I"C:\Program Files\MATLAB\R2015b/simulink/include" -fexceptions -fno-omit-frame-pointer -O -DNDEBUG "F:\Desktop\matlab codes\Radiation2\Accumarray5.cpp" -o C:\Users\CHRIST~1\AppData\Local\Temp\mex_6074947800533816_7768\Accumarray5.obj
CMDLINE2 : C:\MATLAB\SupportPackages\R2015b\MW_MinGW_4_9\\bin\g++ -m64 -Wl,--no-undefined -shared -s -Wl,"C:\Program Files\MATLAB\R2015b/extern/lib/win64/mingw64/mexFunction.def" C:\Users\CHRIST~1\AppData\Local\Temp\mex_6074947800533816_7768\Accumarray5.obj -L"C:\Program Files\MATLAB\R2015b\extern\lib\win64\mingw64" -llibmx -llibmex -llibmat -lm -llibmwlapack -llibmwblas -o Accumarray5.mexw64
CXX : C:\MATLAB\SupportPackages\R2015b\MW_MinGW_4_9\\bin\g++
COMPILER : C:\MATLAB\SupportPackages\R2015b\MW_MinGW_4_9\\bin\g++
DEFINES : -DMX_COMPAT_32 -m64 -DMATLAB_MEX_FILE
MATLABMEX : -DMATLAB_MEX_FILE
CXXFLAGS : -fexceptions -fno-omit-frame-pointer
INCLUDE : -I"C:\Program Files\MATLAB\R2015b/extern/include" -I"C:\Program Files\MATLAB\R2015b/simulink/include"
CXXOPTIMFLAGS : -O -DNDEBUG
CXXDEBUGFLAGS : -g
LDXX : C:\MATLAB\SupportPackages\R2015b\MW_MinGW_4_9\\bin\g++
LINKER : C:\MATLAB\SupportPackages\R2015b\MW_MinGW_4_9\\bin\g++
LDFLAGS : -m64 -Wl,--no-undefined
LDTYPE : -shared
LINKEXPORT : -Wl,"C:\Program Files\MATLAB\R2015b/extern/lib/win64/mingw64/mexFunction.def"
LIBLOC : C:\Program Files\MATLAB\R2015b\extern\lib\win64\mingw64
LINKLIBS : -L"C:\Program Files\MATLAB\R2015b\extern\lib\win64\mingw64" -llibmx -llibmex -llibmat -lm -llibmwlapack -llibmwblas
LDOPTIMFLAGS : -s
LDDEBUGFLAGS : -g
OBJEXT : .obj
LDEXT : .mexw64
SETENV : set COMPILER=g++
set COMPFLAGS=-c -fexceptions -fno-omit-frame-pointer -DMX_COMPAT_32 -m64 -DMATLAB_MEX_FILE -DMATLAB_MEX_FILE
set OPTIMFLAGS=-O -DNDEBUG
set DEBUGFLAGS=-g
set LINKER=g++
set LINKFLAGS=-m64 -Wl,--no-undefined -shared -L"C:\Program Files\MATLAB\R2015b\extern\lib\win64\mingw64" -llibmx -llibmex -llibmat -lm -llibmwlapack -llibmwblas -Wl,"C:\Program Files\MATLAB\R2015b/extern/lib/win64/mingw64/mexFunction.def"
set LINKDEBUGFLAGS=-g
set NAME_OUTPUT= -o "%OUTDIR%%MEX_NAME%%MEX_EXT%"
MINGWROOT : C:\MATLAB\SupportPackages\R2015b\MW_MinGW_4_9\
MATLABROOT : C:\Program Files\MATLAB\R2015b
ARCH : win64
SRC : "F:\Desktop\matlab codes\Radiation2\Accumarray5.cpp"
OBJ : C:\Users\CHRIST~1\AppData\Local\Temp\mex_6074947800533816_7768\Accumarray5.obj
OBJS : C:\Users\CHRIST~1\AppData\Local\Temp\mex_6074947800533816_7768\Accumarray5.obj
SRCROOT : F:\Desktop\matlab codes\Radiation2\Accumarray5
DEF : C:\Users\CHRIST~1\AppData\Local\Temp\mex_6074947800533816_7768\Accumarray5.def
EXP : Accumarray5.exp
LIB : Accumarray5.lib
EXE : Accumarray5.mexw64
ILK : Accumarray5.ilk
MANIFEST : Accumarray5.mexw64.manifest
TEMPNAME : Accumarray5
EXEDIR :
EXENAME : Accumarray5
COMPFLAGS : -std=c++11
OPTIM : -O -DNDEBUG
LINKOPTIM : -s
  3 Comments
Walter Roberson
Walter Roberson on 19 Dec 2017
Notice the
set COMPFLAGS=-c $CXXFLAGS $DEFINES $MATLABMEX
This suggests that instead of setting the COMPFLAGS variable in the mex compile line, that you should set CXXFLAGS instead.

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