Error using MEX

[MiguelVSantos]

Hi,
I've tried to compile but afeter i added the empty libhackrf.lib file i get this error:

C:\hackrf_one\simulink-hackrf-1.0\simulink-hackrf-1.0\deps\bin\libhackrf.lib: file not recognized: File truncated
collect2.exe: error: ld returned 1 exit status

Error in make (line 66)
mex(options{:}, 'src/hackrf_find_devices.c')

btw i'm using MATLAB R2018a
any idea?
regards

[mpozzo]

Hi, could you solve it?
Regards

[shanpriyan]

i got the same error in MATLAB 2017b ,if you find the solution please let me know .
Thanks.

[AustrianCodeWriter]

Hey,
I had the same issue with MATLAB R2017B.
The file libhackrf.lib cannot be empty, since MATLAB use it for compiling with MEX.
I found a way to easily create a valid libhackrf.lib file using Microsoft Visual C++ ("MSVC"):

1. Call a new MSVC console (e.g. for "Visual Studio 2019":
   Start a new command line window and call the batch-script from
   "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community
   \VC\Auxiliary\Build\vcvars64.bat")
2. Change directory to "deps\bin" and run:
   dumpbin /EXPORTS libhackrf.dll > libhackrf.exports
3. Create a new file called "libhackrf.def" and insert the following lines:

   LIBRARY "libhackrf.dll"
   EXPORTS
   hackrf_board_id_name
   hackrf_xxx

... for _hackrf_xxx_ insert each "**hackrf_**" element from your previously created
   "libhackrf.exports" file

4. In your MSVC console type the command:
   lib /def:libhackrf.def /machine:x64 /out:libhackrf.lib

5. If you now run make in MATLAB it should compile without any problems

Regards

[shanpriyan]

thank you for your reply

…

On Sun, Aug 4, 2019 at 10:44 PM AustrianCodeWriter ***@***.***> wrote: Hey, I had the same issue with MATLAB R2017B. The file *libhackrf.lib* cannot be empty, since MATLAB use it for compiling with MEX. I found a way to easily create a *valid libhackrf.lib* file using Microsoft Visual C++ ("MSVC"): 1. Call a new MSVC console (e.g. for "Visual Studio 2019": Start a new command line window and call the batch-script from "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community \VC\Auxiliary\Build\vcvars64.bat") 2. Change directory to "deps\bin" and run: dumpbin /EXPORTS libhackrf.dll > libhackrf.exports 3. Create a new file called "libhackrf.def" and insert the following lines: LIBRARY "libhackrf.dll" EXPORTS hackrf_board_id_name hackrf_xxx ... for _hackrf_xxx_ insert each "**hackrf_**" element from your previously created "libhackrf.exports" file 1. In your MSVC console type the command: lib /def:libhackrf.def /machine:x64 /out:libhackrf.lib 2. If you now run *make* in MATLAB it should compile without any problems Regards — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#11?email_source=notifications&email_token=AKEQA6ZZUFRMNA6W6BDA7Y3QC4FALA5CNFSM4F7QYSZ2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD3QF2OA#issuecomment-518020408>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AKEQA63GQATBIQS7GCQGVWLQC4FALANCNFSM4F7QYSZQ> .