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Hi,
I am trying to compile a c-code using mex. For this I am running following two lines of command as described in this link(mathworks.com/help/matlab/ref/mex.html).
copyfile(fullfile(matlabroot,'extern','examples','mex','yprime.c'),'.','f')
mex yprime.c
however, compilation fails due to following error (see attached screenshot)
Note: I have matlab R2018a version. Also, Prior to compiling I installed MinGW-w64 through matlab's Add-On button. I checked that gcc is available in the path and I compiled another c-code (through windows command line) to make sure it compiles without problem. there was no problem when compiling through command line but compilation with mex in matlab fail.
I would appreciate if you could advise me how to fix this problem.

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Jan
Jan 2018년 5월 9일
Although you have installed the MinGW compiler through the Add-On button, you got an unsspported version? Strange.
Please post the debugging output:
mex -v yprime.c
Mehdi Mlo
Mehdi Mlo 2018년 5월 9일
편집: Mehdi Mlo 2018년 5월 9일
here is debugging output
Verbose mode is on.
... Looking for compiler 'MinGW64 Compiler (C)' ...
... Looking for environment variable 'MW_MINGW64_LOC' ...Yes ('C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset').
... Looking for file 'C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset\bin\gcc.exe' ...Yes.
... Looking for folder 'C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset' ...Yes.
Found installed compiler 'MinGW64 Compiler (C)'.
Set PATH = C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset\bin;C:\Program Files\MATLAB\R2018a\extern\include\win64;C:\Program Files\MATLAB\R2018a\extern\include;C:\Program Files\MATLAB\R2018a\simulink\include;C:\Program Files\MATLAB\R2018a\lib\win64;C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\iverilog\bin;C:\Program Files\iverilog\gtkwave\bin;C:\Program Files\Git\cmd;C:\Program Files\TortoiseGit\bin;C:\cygwin\opt\verilator\bin\;C:\Program Files\MATLAB\R2018a\runtime\win64;C:\Program Files\MATLAB\R2018a\bin;C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset\bin;C:\Users\Alex\AppData\Local\Microsoft\WindowsApps;
Set INCLUDE = C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset\include;;C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset\include;;
Set LIB = C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset\lib;;C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset\lib;;
Set MW_TARGET_ARCH = win64;win64;
Set LIBPATH = C:\Program Files\MATLAB\R2018a\extern\lib\win64;C:\Program Files\MATLAB\R2018a\extern\lib\win64;
Options file details
--------------------------------
Compiler location: C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset
Options file: C:\Users\Alex\AppData\Roaming\MathWorks\MATLAB\R2018a\mex_C_win64.xml
CMDLINE2 : C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset\bin\gcc -m64 -Wl,--no-undefined -shared -static -s -Wl,"C:\Program Files\MATLAB\R2018a/extern/lib/win64/mingw64/exportsmexfileversion.def" C:\Users\Alex\AppData\Local\Temp\mex_2371848025191_9880\yprime.obj C:\Users\Alex\AppData\Local\Temp\mex_2371848025191_9880\c_mexapi_version.obj -L"C:\Program Files\MATLAB\R2018a\extern\lib\win64\mingw64" -llibmx -llibmex -llibmat -lm -llibmwlapack -llibmwblas -o yprime.mexw64
CC : C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset\bin\gcc
COMPILER : C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset\bin\gcc
DEFINES : -DMATLAB_DEFAULT_RELEASE=R2017b -DUSE_MEX_CMD -m64 -DMATLAB_MEX_FILE
MATLABMEX : -DMATLAB_MEX_FILE
CFLAGS : -fexceptions -fno-omit-frame-pointer
INCLUDE : -I"C:\Program Files\MATLAB\R2018a/extern/include" -I"C:\Program Files\MATLAB\R2018a/simulink/include" -I"C:\Program Files\MATLAB\R2018a/extern\lib\win64\mingw64"
COPTIMFLAGS : -O -DNDEBUG
CDEBUGFLAGS : -g
LD : C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset\bin\gcc
LINKER : C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset\bin\gcc
LDTYPE : -shared -static
LDFLAGS : -m64 -Wl,--no-undefined
LINKEXPORT : -Wl,"C:\Program Files\MATLAB\R2018a/extern/lib/win64/mingw64/mexFunction.def"
LINKEXPORTVER : -Wl,"C:\Program Files\MATLAB\R2018a/extern/lib/win64/mingw64/exportsmexfileversion.def"
LIBLOC : C:\Program Files\MATLAB\R2018a\extern\lib\win64\mingw64
LINKLIBS : -L"C:\Program Files\MATLAB\R2018a\extern\lib\win64\mingw64" -llibmx -llibmex -llibmat -lm -llibmwlapack -llibmwblas
LDOPTIMFLAGS : -s
LDDEBUGFLAGS : -g
OBJEXT : .obj
LDEXT : .mexw64
SETENV : set COMPILER=C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset\bin\gcc
set CXXCOMPILER=C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset\bin\g++
set COMPFLAGS=-c -fexceptions -fno-omit-frame-pointer -DMATLAB_DEFAULT_RELEASE=R2017b -DUSE_MEX_CMD -m64 -DMATLAB_MEX_FILE -DMATLAB_MEX_FILE
set CXXCOMPFLAGS=-c -fexceptions -fno-omit-frame-pointer -std=c++11 -DMATLAB_DEFAULT_RELEASE=R2017b -DUSE_MEX_CMD -m64 -DMATLAB_MEX_FILE -DMATLAB_MEX_FILE
set OPTIMFLAGS=-O -DNDEBUG
set DEBUGFLAGS=-g
set LINKER=C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset\bin\gcc
set CXXLINKER=C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset\bin\g++
set LINKFLAGS=-m64 -Wl,--no-undefined -shared -static -L"C:\Program Files\MATLAB\R2018a\extern\lib\win64\mingw64" -llibmx -llibmex -llibmat -lm -llibmwlapack -llibmwblas -Wl,"C:\Program Files\MATLAB\R2018a/extern/lib/win64/mingw64/mexFunction.def"
set LINKDEBUGFLAGS=-g
set NAME_OUTPUT=-o "%OUTDIR%%MEX_NAME%%MEX_EXT%"
MINGWROOT : C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset
MATLABROOT : C:\Program Files\MATLAB\R2018a
ARCH : win64
SRC : "C:\Users\Alex\Desktop\New_folder\testbench\yprime.c";"C:\Program Files\MATLAB\R2018a\extern\version\c_mexapi_version.c"
OBJ : C:\Users\Alex\AppData\Local\Temp\mex_2371848025191_9880\yprime.obj;C:\Users\Alex\AppData\Local\Temp\mex_2371848025191_9880\c_mexapi_version.obj
OBJS : C:\Users\Alex\AppData\Local\Temp\mex_2371848025191_9880\yprime.obj C:\Users\Alex\AppData\Local\Temp\mex_2371848025191_9880\c_mexapi_version.obj
SRCROOT : C:\Users\Alex\Desktop\New_folder\testbench\yprime
DEF : C:\Users\Alex\AppData\Local\Temp\mex_2371848025191_9880\yprime.def
EXP : "yprime.exp"
LIB : "yprime.lib"
EXE : yprime.mexw64
ILK : "yprime.ilk"
MANIFEST : "yprime.mexw64.manifest"
TEMPNAME : yprime
EXEDIR :
EXENAME : yprime
OPTIM : -O -DNDEBUG
LINKOPTIM : -s
CMDLINE1_0 : C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset\bin\gcc -c -DMATLAB_DEFAULT_RELEASE=R2017b -DUSE_MEX_CMD -m64 -DMATLAB_MEX_FILE -I"C:\Program Files\MATLAB\R2018a/extern/include" -I"C:\Program Files\MATLAB\R2018a/simulink/include" -I"C:\Program Files\MATLAB\R2018a/extern\lib\win64\mingw64" -fexceptions -fno-omit-frame-pointer -O -DNDEBUG "C:\Users\Alex\Desktop\New_folder\testbench\yprime.c" -o C:\Users\Alex\AppData\Local\Temp\mex_2371848025191_9880\yprime.obj
CMDLINE1_1 : C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset\bin\gcc -c -DMATLAB_DEFAULT_RELEASE=R2017b -DUSE_MEX_CMD -m64 -DMATLAB_MEX_FILE -I"C:\Program Files\MATLAB\R2018a/extern/include" -I"C:\Program Files\MATLAB\R2018a/simulink/include" -I"C:\Program Files\MATLAB\R2018a/extern\lib\win64\mingw64" -fexceptions -fno-omit-frame-pointer -O -DNDEBUG "C:\Program Files\MATLAB\R2018a\extern\version\c_mexapi_version.c" -o C:\Users\Alex\AppData\Local\Temp\mex_2371848025191_9880\c_mexapi_version.obj
-------------------------------------
Building with 'MinGW64 Compiler (C)'.
Warning: You are using an unsupported version of MinGW Compiler. To install the supported version of MinGW compiler, see: Install MinGW-w64
Compiler.
For a list of currently supported compilers visit https://www.mathworks.com/support/compilers.
> In Untitled (line 4)
C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset\bin\gcc -c -DMATLAB_DEFAULT_RELEASE=R2017b -DUSE_MEX_CMD -m64 -DMATLAB_MEX_FILE -I"C:\Program Files\MATLAB\R2018a/extern/include" -I"C:\Program Files\MATLAB\R2018a/simulink/include" -I"C:\Program Files\MATLAB\R2018a/extern\lib\win64\mingw64" -fexceptions -fno-omit-frame-pointer -O -DNDEBUG "C:\Users\Alex\Desktop\New_folder\testbench\yprime.c" -o C:\Users\Alex\AppData\Local\Temp\mex_2371848025191_9880\yprime.obj
Error using mex
The command 'C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset\bin\gcc' exited with a return value '5'
Error in Untitled (line 4)
mex -v yprime.c
Mehdi Mlo
Mehdi Mlo 2018년 5월 9일
In debug output in some lines I can see
-DMATLAB_DEFAULT_RELEASE=R2017b
whereas I have 2018a installed. wondering if it can be the problem? if so, how should I fix it?
Mehdi Mlo
Mehdi Mlo 2018년 5월 9일
here is the compiler configuration
Name: 'MinGW64 Compiler (C)'
Manufacturer: 'GNU'
Language: 'C'
Version: '5.3.0'
Location: 'C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset'
ShortName: 'mingw64'
Priority: 'E'
Details: [1×1 mex.CompilerConfigurationDetails]
LinkerName: 'C:\ProgramData\MATLAB\SupportPackages\R2018a\3P.instrset\mingw_w64.instrset\bin\gcc'
LinkerVersion: ''
MexOpt: 'C:\Users\Alex\AppData\Roaming\MathWorks\MATLAB\R2018a\mex_C_win64.xml'
Walter Roberson
Walter Roberson 2018년 5월 9일
-DMATLAB_DEFAULT_RELEASE=R2017b has to do with some changes to the MATLAB API for complex-valued variables that were made in R2018a. The default is to compile with the older API.
Ido Imanuel
Ido Imanuel 2019년 2월 10일
Vincent
Vincent 2019년 4월 28일
편집: Vincent 2019년 4월 28일
Same issue here... Any solution available?
Running MATLAB2017b and MATLAB2019a, the problem occurs in both. I cannot compile any C or C++ code in MATLAB, while compiling through Visual Studio works...
Thanks.
Here's the outcome of verbose mex setup:
mex -setup -v
Verbose mode is on.
... Looking for compiler 'Intel Parallel Studio XE 2015 with Microsoft Visual Studio 2015 (C)' ...
... Looking for environment variable 'ICPP_COMPILER15' ...No.
Did not find installed compiler 'Intel Parallel Studio XE 2015 with Microsoft Visual Studio 2015 (C)'.
... Looking for compiler 'Intel Parallel Studio XE 2016 with Microsoft Visual Studio 2015 (C)' ...
... Looking for environment variable 'ICPP_COMPILER16' ...No.
Did not find installed compiler 'Intel Parallel Studio XE 2016 with Microsoft Visual Studio 2015 (C)'.
... Looking for compiler 'Intel Parallel Studio XE 2017 with Microsoft Visual Studio 2015 (C)' ...
... Looking for environment variable 'ICPP_COMPILER17' ...No.
Did not find installed compiler 'Intel Parallel Studio XE 2017 with Microsoft Visual Studio 2015 (C)'.
... Looking for compiler 'Intel Parallel Studio XE 2017 with Microsoft Visual Studio 2017 (C)' ...
... Looking for environment variable 'ICPP_COMPILER17' ...No.
Did not find installed compiler 'Intel Parallel Studio XE 2017 with Microsoft Visual Studio 2017 (C)'.
... Looking for compiler 'Intel Parallel Studio XE 2018 with Microsoft Visual Studio 2015 (C)' ...
... Looking for environment variable 'ICPP_COMPILER18' ...No.
Did not find installed compiler 'Intel Parallel Studio XE 2018 with Microsoft Visual Studio 2015 (C)'.
... Looking for compiler 'Intel Parallel Studio XE 2018 with Microsoft Visual Studio 2017 (C)' ...
... Looking for environment variable 'ICPP_COMPILER18' ...No.
Did not find installed compiler 'Intel Parallel Studio XE 2018 with Microsoft Visual Studio 2017 (C)'.
... Looking for compiler 'Intel Parallel Studio XE 2019 with Microsoft Visual Studio 2015 (C)' ...
... Looking for environment variable 'ICPP_COMPILER19' ...No.
Did not find installed compiler 'Intel Parallel Studio XE 2019 with Microsoft Visual Studio 2015 (C)'.
... Looking for compiler 'Intel Parallel Studio XE 2019 with Microsoft Visual Studio 2017 (C)' ...
... Looking for environment variable 'ICPP_COMPILER19' ...No.
Did not find installed compiler 'Intel Parallel Studio XE 2019 with Microsoft Visual Studio 2017 (C)'.
... Looking for compiler 'MinGW64 Compiler (C)' ...
... Looking for environment variable 'MW_MINGW64_LOC' ...Yes ('C:\ProgramData\MATLAB\SupportPackages\R2019a\3P.instrset\mingw_w64.instrset').
... Looking for file 'C:\ProgramData\MATLAB\SupportPackages\R2019a\3P.instrset\mingw_w64.instrset\bin\gcc.exe' ...Yes.
... Looking for folder 'C:\ProgramData\MATLAB\SupportPackages\R2019a\3P.instrset\mingw_w64.instrset' ...Yes.
Found installed compiler 'MinGW64 Compiler (C)'.
... Looking for compiler 'Microsoft Visual C++ 2015 (C)' ...
... Looking for registry setting 'HKLM\SOFTWARE\Microsoft\VisualStudio\SxS\VC7' 14.0 ...No.
... Looking for registry setting 'HKCU\SOFTWARE\Microsoft\VisualStudio\SxS\VC7' 14.0 ...No.
... Looking for registry setting 'HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\SxS\VC7' 14.0 ...Yes ('C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\').
... Looking for file 'C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\bin\amd64\cl.exe' ...Yes.
... Looking for folder 'C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC' ...Yes.
... Looking for registry setting 'HKLM\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v8.1' InstallationFolder ...No.
... Looking for registry setting 'HKCU\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v8.1' InstallationFolder ...No.
... Looking for registry setting 'HKLM\SOFTWARE\Wow6432Node\Microsoft\Microsoft SDKs\Windows\v8.1' InstallationFolder ...Yes ('C:\Program Files (x86)\Windows Kits\8.1\').
... Looking for registry setting 'HKLM\SOFTWARE\Microsoft\VisualStudio\SxS\VS7' 14.0 ...No.
... Looking for registry setting 'HKCU\SOFTWARE\Microsoft\VisualStudio\SxS\VS7' 14.0 ...No.
... Looking for registry setting 'HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\SxS\VS7' 14.0 ...Yes ('C:\Program Files (x86)\Microsoft Visual Studio 14.0\').
... Looking for registry setting 'HKLM\SOFTWARE\Microsoft\VisualStudio\SxS\VC7' 14.0 ...No.
... Looking for registry setting 'HKCU\SOFTWARE\Microsoft\VisualStudio\SxS\VC7' 14.0 ...No.
... Looking for registry setting 'HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\SxS\VC7' 14.0 ...Yes ('C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\').
... Looking for registry setting 'HKLM\SOFTWARE\Microsoft\VisualStudio\SxS\VC7' 14.0 ...No.
... Looking for registry setting 'HKCU\SOFTWARE\Microsoft\VisualStudio\SxS\VC7' 14.0 ...No.
... Looking for registry setting 'HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\SxS\VC7' 14.0 ...Yes ('C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\').
... Looking for file 'C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat' ...Yes.
... Looking for folder 'C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC' ...Yes.
... Looking for registry setting 'HKLM\SOFTWARE\Wow6432Node\Microsoft\Windows Kits\Installed Roots' KitsRoot10 ...Yes ('C:\Program Files (x86)\Windows Kits\10\').
... Looking for registry setting 'HKLM\SOFTWARE\Wow6432Node\Microsoft\Windows Kits\Installed Roots' KitsRoot10 ...Yes ('C:\Program Files (x86)\Windows Kits\10\').
... Executing command 'echo off&set "sdkversion="&(for /f %a IN ('dir "C:\Program Files (x86)\Windows Kits\10\include\" /b /ad-h /on') do ( @if exist "C:\Program Files (x86)\Windows Kits\10\include\%a\ucrt\" set "sdkversion=%a" ))&call echo %sdkversion%' ...No.
Did not find installed compiler 'Microsoft Visual C++ 2015 (C)'.
... Looking for compiler 'Microsoft Visual C++ 2017 (C)' ...
... Looking for registry setting 'HKLM\SOFTWARE\Microsoft\VisualStudio\SxS\VS7' 15.0 ...No.
... Looking for registry setting 'HKCU\SOFTWARE\Microsoft\VisualStudio\SxS\VS7' 15.0 ...No.
... Looking for registry setting 'HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\SxS\VS7' 15.0 ...Yes ('C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\').
... Executing command 'set "vcroot=C:\Program Files (x86)\Microsoft Visual Studio\2017\Community"&for /f "delims= " %a in ('type "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\Microsoft.VCToolsVersion.default.txt"') do @if exist "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\%a\bin\HostX64\x64\cl.exe" call echo %vcroot%' ...No.
Did not find installed compiler 'Microsoft Visual C++ 2017 (C)'.
... Looking for compiler 'MinGW64 Compiler (C)' ...
... Looking for environment variable 'MW_MINGW64_LOC' ...Yes ('C:\ProgramData\MATLAB\SupportPackages\R2019a\3P.instrset\mingw_w64.instrset').
... Looking for file 'C:\ProgramData\MATLAB\SupportPackages\R2019a\3P.instrset\mingw_w64.instrset\bin\gcc.exe' ...Yes.
... Looking for folder 'C:\ProgramData\MATLAB\SupportPackages\R2019a\3P.instrset\mingw_w64.instrset' ...Yes.
Found installed compiler 'MinGW64 Compiler (C)'.
MEX configured to use 'MinGW64 Compiler (C)' for C language compilation.
Jan
Jan 2019년 4월 28일
편집: Jan 2019년 4월 28일
@Vincent: This is the logging of the succesful setup of the compiler. Now please post the logging of the failing compilation.
@Ido Imanuel: No, this does not look to be the "same" error. You are not able to setup a compiler, but the OP Mehdi Mlo has another problem.

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Mehdi Mlo
Mehdi Mlo
2018년 5월 8일

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Jan
Jan
2019년 4월 28일

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