Cannot export mexFunction: symbol not defined

[Sal1141]

While configuring , when i reach the vl_compilenn command it informs me to use the C++ compiler of the visual studio, i did that already. finally i have an error i think it is regarding the mex compilation. DO i have to upgrade the mex? i use the matlab 2017b do i have to upgrade to 2018a to upgrade the mex files? could you please help me? the log is :

`K>> mex -setup MEX configured to use 'Microsoft Visual C++ 2015 (C)' for C language compilation. Warning: The MATLAB C and Fortran API has changed to support MATLAB variables with more than 2^32-1 elements. You will be required to update your code to utilize the new API. You can find more information about this at: http://www.mathworks.com/help/matlab/matlab_external/upgrading-mex-files-to-use-64-bit-api.html.

To choose a different C compiler, select one from the following: MinGW64 Compiler (C) mex -setup:'C:\Program Files\MATLAB\R2017b\bin\win64\mexopts\mingw64.xml' C Microsoft Visual C++ 2015 (C) mex -setup:C:\Users\JUST\AppData\Roaming\MathWorks\MATLAB\R2017b\mex_C_win64.xml C

To choose a different language, select one from the following: mex -setup C++ mex -setup FORTRAN K>> mex -setup:C:\Users\JUST\AppData\Roaming\MathWorks\MATLAB\R2017b\mex_C_win64.xml C MEX configured to use 'Microsoft Visual C++ 2015 (C)' for C language compilation. Warning: The MATLAB C and Fortran API has changed to support MATLAB variables with more than 2^32-1 elements. You will be required to update your code to utilize the new API. You can find more information about this at: http://www.mathworks.com/help/matlab/matlab_external/upgrading-mex-files-to-use-64-bit-api.html. K>> addpath matlab K>> vl_compilenn Building with 'MinGW64 Compiler (C++)'. Error using mex Cannot export mexFunction: symbol not defined Cannot export mexfilerequiredapiversion: symbol not defined collect2.exe: error: ld returned 1 exit status

Error in vl_compilenn>mex_compile (line 583) mex(args{:}) ;

Error in vl_compilenn (line 492) mex_compile(opts, srcs{i}, objfile, flags) ;

583 mex(args{:}) ; K>> vl_compilenn('verbose', 1) vl_compilenn: Compiler and linker configurations vl_compilenn: intermediate build products directory: C:\Users\JUST\Desktop\sanaas work\medical work\imageset 1\try3\practical-category-detection-2018a\matconvnet\matlab\mex.build vl_compilenn: MEX files: C:\Users\JUST\Desktop\sanaas work\medical work\imageset 1\try3\practical-category-detection-2018a\matconvnet\matlab\mex/ vl_compilenn: Base options: -DENABLE_DOUBLE -O -DNDEBUG vl_compilenn: MEX CXX: -largeArrayDims -DSSSE3 vl_compilenn: MEX CXXFLAGS: vl_compilenn: MEX CXXOPTIMFLAGS: vl_compilenn: MEX LINK: -largeArrayDims -lmwblas vl_compilenn: MEX LINK LDFLAGS: vl_compilenn: MEX LINK LDOPTIMFLAGS: vl_compilenn: MEX LINK LINKLIBS: gdiplus.lib vl_compilenn: Reading images vl_compilenn: vl_imreadjpeg enabled vl_compilenn: image library: gdiplus vl_compilenn: image library compile flags: vl_compilenn: image library link flags: gdiplus.lib vl_compilenn: MEX CC: -c -outdir C:\Users\JUST\Desktop\sanaas work\medical work\imageset 1\try3\practical-category-detection-2018a\matconvnet\matlab\mex.build\bits C:\Users\JUST\Desktop\sanaas work\medical work\imageset 1\try3\practical-category-detection-2018a\matconvnet\matlab\src\bits\data.cpp -DENABLE_DOUBLE -O -DNDEBUG -largeArrayDims -DSSSE3 CXXFLAGS=$CXXFLAGS CXXOPTIMFLAGS=$CXXOPTIMFLAGS Building with 'MinGW64 Compiler (C++)'. Error using mex Cannot export mexFunction: symbol not defined Cannot export mexfilerequiredapiversion: symbol not defined collect2.exe: error: ld returned 1 exit status

Error in vl_compilenn>mex_compile (line 583) mex(args{:}) ;

Error in vl_compilenn (line 492) mex_compile(opts, srcs{i}, objfile, flags) ;

583 mex(args{:}) ; K>> `

[HichameTiaiba]

same issue.