mex compile linking failure

[EDIT: 20110711 16:37 CDT - reformat - WDR]

I am trying to compile a legacy code originally written in FORTRAN and converted to C using 'f2c.exe' into an S-function for use in SIMULINK. Previously people have been able to compile the code (on older versions of MATLAB), and now I'm trying to recompile to code. I get a linking error:

C:\PROGRA~1\MATLAB\R2009A\BIN\MEX.PL: Error: Link of 'myProgram.mexw32' failed.

The verbose output from the compiler follows:

mex myProgram.c haspms32.obj hasp32b.obj -v
 This is mex, Copyright 1984-2007 The MathWorks, Inc. 

-> Default options filename found in C:\Users\UsrName\AppData\Roaming\MathWorks\MATLAB\R2009a 
---------------------------------------------------------------- 
->    Options file           = C:\Users\UsrName\AppData\Roaming\MathWorks\MATLAB\R2009a\mexopts.bat 
      MATLAB                 = C:\PROGRA~1\MATLAB\R2009A 
->    COMPILER               = lcc 
->    Compiler flags: 
         COMPFLAGS           = -c -Zp8 -I"C:\PROGRA~1\MATLAB\R2009A\sys\lcc\include" -DMATLAB_MEX_FILE -noregistrylookup 
         OPTIMFLAGS          = -DNDEBUG 
         DEBUGFLAGS          = -g4 
         arguments           =  
         Name switch         = -Fo 
->    Pre-linking commands   =  
->    LINKER                 = lcclnk 
->    Link directives: 
         LINKFLAGS           =  -tmpdir "." -dll "C:\PROGRA~1\MATLAB\R2009A\extern\lib\win32\lcc\mexFunction.def" -L"C:\PROGRA~1\MATLAB\R2009A\sys\lcc\lib" -libpath "C:\PROGRA~1\MATLAB\R2009A\extern\lib\win32\lcc" "C:\USERS\UsrName\APPDATA\LOCAL\TEMP\MEX_0W~1\templib2.obj" 
         LINKDEBUGFLAGS      =  
         LINKFLAGSPOST       = libmx.lib libmex.lib libmat.lib 
         Name directive      = -o "myProgram.mexw32" 
         File link directive =  
         Lib. link directive =  
         Rsp file indicator  = @ 
->    Resource Compiler      = lrc -I"C:\PROGRA~1\MATLAB\R2009A\sys\lcc\include" -noregistrylookup -fo"mexversion.res" 
->    Resource Linker        =  
---------------------------------------------------------------- 

--> lcc  -c -Zp8 -I"C:\PROGRA~1\MATLAB\R2009A\sys\lcc\include" -DMATLAB_MEX_FILE -noregistrylookup -FoC:\USERS\UsrName\APPDATA\LOCAL\TEMP\MEX_0W~1\myProgram.obj -IC:\PROGRA~1\MATLAB\R2009A\extern\include -IC:\PROGRA~1\MATLAB\R2009A\simulink\include -DNDEBUG -DMX_COMPAT_32 myProgram.c 

Warning myProgram.c: .\haspcheck.c: 6  assignment of pointer to const unsigned int to pointer to unsigned long 
Warning myProgram.c: .\haspcheck.c: 6  assignment of pointer to const unsigned int to pointer to unsigned long 
Warning myProgram.c: 139  local `array 80 of char token' is not referenced 
Warning myProgram.c: 137   possible usage of timeout before definition 
Warning myProgram.c: 128  local `int timesig' is not referenced 
0 errors, 5 warnings 

--> lcc -c -Zp8 -I"C:\PROGRA~1\MATLAB\R2009A\sys\lcc\include" -DMATLAB_MEX_FILE -noregistrylookup "C:\PROGRA~1\MATLAB\R2009A\sys\lcc\mex\lccstub.c" -Fo"C:\USERS\UsrName\APPDATA\LOCAL\TEMP\MEX_0W~1\templib2.obj" 

      Contents of C:\USERS\UsrName\APPDATA\LOCAL\TEMP\MEX_0W~1\mex_tmp.rsp: 
    C:\USERS\UsrName\APPDATA\LOCAL\TEMP\MEX_0W~1\myProgram.obj  haspms32.obj  hasp32b.obj 

--> lcclnk -o "myProgram.mexw32"  -tmpdir "." -dll "C:\PROGRA~1\MATLAB\R2009A\extern\lib\win32\lcc\mexFunction.def" -L"C:\PROGRA~1\MATLAB\R2009A\sys\lcc\lib" -libpath "C:\PROGRA~1\MATLAB\R2009A\extern\lib\win32\lcc" "C:\USERS\UsrName\APPDATA\LOCAL\TEMP\MEX_0W~1\templib2.obj" -s @C:\USERS\UsrName\APPDATA\LOCAL\TEMP\MEX_0W~1\MEX_TMP.RSP  libmx.lib libmex.lib libmat.lib 

    C:\PROGRA~1\MATLAB\R2009A\BIN\MEX.PL: Error: Link of 'myProgram.mexw32' failed. 

??? Error using ==> mex at 218
Unable to complete successfully.

[John Robinson]

Sorry, forgot to ask if anyone knows why it's failing or has any possible solutions to try. Thanks a ton for the help!

Answer 1

[Walter Roberson]

That Link failed message isn't very helpful, is it?

I think I would be tempted to download the appropriate Microsoft SDK for your release, in hopes that a more useful error message was generated.

You can find the list of compilers for 2009a here

[John Robinson]

Hi Walter,

I have Visual Studio 2010 already installed, I think I should have another compiler which could work but unfortunately I was not able to figure out how to change the compiler, when I try "mex -setup" and select 'y' for 'Would you like mex to locate installed compilers' my only options are [1] Lcc-win32 C 2.4.1 in C:\PROGRA~1\MATLAB\R2009a\sys\lcc

[0] None

I don't know if this means that any compilers from VS 2010 are not compatible, or that I'm missing a step for updating the compilers available.

I know that may be really basic, but I'm a absolute newbie when it comes to compiling code for MATLAB. Thanks again!

[Kaustubha Govind]

John: If you look at the list of compilers on Walter's link above, MSVC 2010 is not a supported compiler for R2009a. You can either upgrade to R2011a or get a supported version of MSVC.

[John Robinson]

Walter and Kaustubha,

Thanks a lot for the help, I tried VC++ 2008 and the program compiled successfully! Thanks a ton!