Dynamic and Shared Libraries

Hello everyone,

I have a .dll file that i have downloaded from the internet. This file has been reported as a dependancy by the walker software. I am trying to include it in my MEX command. However i get an error while compiling. I have saved the .dll file to the same folder from where i run the make file which contains the mex command.

How do i sort it out?

mex msvcr7.lib

LINK : fatal error LNK1181: cannot open input file 'msvcr7.lib' 

[Geoff Hayes]

VInayak - please clarify if you have a dll or a static library. Your code suggests that you have a lib but you indicate that you have a dll. Which is it?

[VINAYAK KARANDIKAR]

I have a dll. But for the sake of compilation using mex command, i have used the .lib extension.

By the way, using the .dll extension gives the error:

C:\PROGRA~1\MATLAB\R2013B\BIN\MEX.PL: Error: mex cannot link to 'msvcr7.dll' directly. 
  Instead, you must link to the file 'msvcr7.lib' which corresponds to 'msvcr7.dll'. 

[Geoff Hayes]

From mex filenames input param, For linking dynamic libraries, use the -llibname option. Have you tried to do this?

[VINAYAK KARANDIKAR]

@Geoff Hayes

Hey that gave me the result:

Warning: MEX could not find the library "msvcr7.dll" specified with -l option. 
         MEX looked for a file with one of the names: 
               msvcr7.dll.lib 
               libmsvcr7.dll.lib 
         MEX looked for the library in the following directories: 
               C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\LIB\amd64 
               C:\Program Files (x86)\Microsoft Visual Studio 10.0\v7.1\LIB\X64 
               C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\ATLMFC\LIB\AMD64 
               C:\Program Files\MATLAB\R2013b\extern\lib\win64 
               C:\Program Files\MATLAB\R2013b\extern\lib\win64\microsoft 
               .C:\Program Files\MATLAB\R2013b\extern\lib\win64\microsoft 

Now which location do i place the said .dll file, among those reported above in the code?

Just another thing: The walker program shows 9 dll dependencies and other dependencies (100 odd or possibly more!!) are of the type "API-MS-WIN-CORE-WOW64-L1-1-1.DLL"

Do i ignore those..cause i can't possibly sit and replace ALL of them?

Thanks a lot,

Vinayak

[Walter Roberson]

-lmsvcr7

Ignore the API-MS entries.

[VINAYAK KARANDIKAR]

@Walter Roberson

I tried this:

function make()
   
       mex  -largeArrayDims -v -g   -I. ../MATLAB_USRP_INTERFACE/uhdinterface.cpp ../MATLAB_USRP_INTERFACE/tx_functions.cpp ../MATLAB_USRP_INTERFACE/rx_functions.cpp ../MATLAB_USRP_INTERFACE/mexutil.cpp ../MATLAB_USRP_INTERFACE/uhd_functions.cpp ../MATLAB_USRP_INTERFACE/storage.cpp  -L."C:\Program Files\MATLAB\R2013b\extern\lib\win64\microsoft" libboost_thread-vc100-mt-1_55.lib libboost_date_time-vc100-mt-1_55.lib libboost_system-vc100-mt-1_55.lib libboost_chrono-vc100-mt-1_55.lib uhd.lib libmx.lib libmex.lib libmat.lib ...
              -lmsvcr7
 %     mex -g uhd.lib -I. ../MATLAB_USRP_INTERFACE/uhdinterface.cpp ../MATLAB_USRP_INTERFACE/tx_functions.cpp ../MATLAB_USRP_INTERFACE/rx_functions.cpp ../MATLAB_USRP_INTERFACE/mexutil.cpp ../MATLAB_USRP_INTERFACE/uhd_functions.cpp ../MATLAB_USRP_INTERFACE/storage.cpp
end

and i get this:

Warning: MEX could not find the library "msvcr7" specified with -l option. 
         MEX looked for a file with one of the names: 
               msvcr7.lib 
               libmsvcr7.lib 
         MEX looked for the library in the following directories: 
               C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\LIB\amd64 
               C:\Program Files (x86)\Microsoft Visual Studio 10.0\v7.1\LIB\X64 
               C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\ATLMFC\LIB\AMD64 
               C:\Program Files\MATLAB\R2013b\extern\lib\win64 
               C:\Program Files\MATLAB\R2013b\extern\lib\win64\microsoft 
               .C:\Program Files\MATLAB\R2013b\extern\lib\win64\microsoft 

further, i tried this:

   function make()
   
       mex  -largeArrayDims -v -g   -I. ../MATLAB_USRP_INTERFACE/uhdinterface.cpp ../MATLAB_USRP_INTERFACE/tx_functions.cpp ../MATLAB_USRP_INTERFACE/rx_functions.cpp ../MATLAB_USRP_INTERFACE/mexutil.cpp ../MATLAB_USRP_INTERFACE/uhd_functions.cpp ../MATLAB_USRP_INTERFACE/storage.cpp  -L."C:\Program Files\MATLAB\R2013b\extern\lib\win64\microsoft" libboost_thread-vc100-mt-1_55.lib libboost_date_time-vc100-mt-1_55.lib libboost_system-vc100-mt-1_55.lib libboost_chrono-vc100-mt-1_55.lib uhd.lib libmx.lib libmex.lib libmat.lib ...
              -lmsvcr7.dll
 %     mex -g uhd.lib -I. ../MATLAB_USRP_INTERFACE/uhdinterface.cpp ../MATLAB_USRP_INTERFACE/tx_functions.cpp ../MATLAB_USRP_INTERFACE/rx_functions.cpp ../MATLAB_USRP_INTERFACE/mexutil.cpp ../MATLAB_USRP_INTERFACE/uhd_functions.cpp ../MATLAB_USRP_INTERFACE/storage.cpp
end            

and i get this:

Warning: MEX could not find the library "msvcr7.dll" specified with -l option. 
         MEX looked for a file with one of the names: 
               msvcr7.dll.lib 
               libmsvcr7.dll.lib 
         MEX looked for the library in the following directories: 
               C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\LIB\amd64 
               C:\Program Files (x86)\Microsoft Visual Studio 10.0\v7.1\LIB\X64 
               C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\ATLMFC\LIB\AMD64 
               C:\Program Files\MATLAB\R2013b\extern\lib\win64 
               C:\Program Files\MATLAB\R2013b\extern\lib\win64\microsoft 
               .C:\Program Files\MATLAB\R2013b\extern\lib\win64\microsoft 

Then finally i tried this:

     function make()
   
       mex  -largeArrayDims -v -g   -I. ../MATLAB_USRP_INTERFACE/uhdinterface.cpp ../MATLAB_USRP_INTERFACE/tx_functions.cpp ../MATLAB_USRP_INTERFACE/rx_functions.cpp ../MATLAB_USRP_INTERFACE/mexutil.cpp ../MATLAB_USRP_INTERFACE/uhd_functions.cpp ../MATLAB_USRP_INTERFACE/storage.cpp  -L."C:\Program Files\MATLAB\R2013b\extern\lib\win64\microsoft" libboost_thread-vc100-mt-1_55.lib libboost_date_time-vc100-mt-1_55.lib libboost_system-vc100-mt-1_55.lib libboost_chrono-vc100-mt-1_55.lib uhd.lib libmx.lib libmex.lib libmat.lib ...
              -lmsvcr7.lib
 %     mex -g uhd.lib -I. ../MATLAB_USRP_INTERFACE/uhdinterface.cpp ../MATLAB_USRP_INTERFACE/tx_functions.cpp ../MATLAB_USRP_INTERFACE/rx_functions.cpp ../MATLAB_USRP_INTERFACE/mexutil.cpp ../MATLAB_USRP_INTERFACE/uhd_functions.cpp ../MATLAB_USRP_INTERFACE/storage.cpp
end          

and i get this:

Warning: MEX could not find the library "msvcr7.lib" specified with -l option. 
         MEX looked for a file with one of the names: 
               msvcr7.lib.lib 
               libmsvcr7.lib.lib 
         MEX looked for the library in the following directories: 
               C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\LIB\amd64 
               C:\Program Files (x86)\Microsoft Visual Studio 10.0\v7.1\LIB\X64 
               C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\ATLMFC\LIB\AMD64 
               C:\Program Files\MATLAB\R2013b\extern\lib\win64 
               C:\Program Files\MATLAB\R2013b\extern\lib\win64\microsoft 
               .C:\Program Files\MATLAB\R2013b\extern\lib\win64\microsoft 

What do i do?