Can not get example to work after following instructions given in "Getting Started with the NI LabVIEW C Generator" guide

We explored using sbRIO for our project, for different reasons we ended up going with a different embedded solution . We are currently evaluating the LabVIEW C Generator to convert some of the core analysis routines from LabVIEW to C so the team that will be creating the embedded solution don't have to re-implement them from scratch.
Before converting our code, I followed the instructions given in the "Getting Started with the NI LabVIEW C Generator" manual to create a static library created inCygwin using GNU Compiler Collection (GCC).
I managed to compile the code, but when I type "run GCD.exe" in the Cygwin console, I just see the window flash with no time to see if the result is correct or not. I modified the main.c cde to add a getchar(), but the window still just flashes and now I am left with the GCD process still running and have to kill it using Windows Task Manager.
Has anyone else got this example to run? I am sure I am missing an obvious setting or step, please help me.
More details below.
Thanks,
Fab
Here is a video showing the steps I followed
If you don't want/can't see the video. Here are some screenshots of what I have done so far:
GratestCommonDivisor.lvproj C Generation build specs Information:
C Function prototype definition:
I copied Makefile located at: C:\Program Files (x86)\National Instruments\LabVIEW 2011\examples\CGenerator\Tutorial\Cygwin
and replaced both Makefile and Makefile.cygwin in the directory where the C code was generated
I also copied main.c from the same location and replaced the one generated
Here is the snapshot of the results after executing "make GCD.exe"
Then to run it I just type
I see a window open and close really quickly and I never see the result. I have tried adding the getchar() line to the main.c file, but still I don't get to see the results.
Certified LabVIEW Architect * Certified Professional Instructor * LabVIEW Champion

Hi Kevin,
I hope you had a good Thanksgiving. I am attaching a zip file with the LabVIEW project, my build specification and my version of "Greatest Common Divisor.vi", which should be the same as the one that you have that ships with the LabVIEW C Generator, but just in case. I am also attaching a zip file with the C files generated by the LabVIEW C Generator.
You can also see the video I posted earlier with the steps I followed. I hope you are able to point out where I went wrong.
Thanks,
Fab
Certified LabVIEW Architect * Certified Professional Instructor * LabVIEW Champion
Attachments:
GreatestCommonDivisor.zip ‏8 KB
CGen Files.zip ‏71 KB

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Re: Can not get example to work after following instructions given in "Getting Started with the NI LabVIEW C Generator" guide

Fab,
Like you, I'm looking into using the LabVIEW C Generator for an embedded application.
I would be interested in your opinion of the LabVIEW C Generator. Also, roughly how much does it cost?
Regards,
Vito

Himura_Kenshin wrote:
Hi all,
I'm trying to compile the same generated code (from GCD.vi) but with a Keil µvision 4 ( the default target: Luminary).
I followed line by line the tutoriaI and i used the µvision project (example.uvproj) mentioned in the manual (edited under µvision2).
I have 0 errors but many warnings (35) divided on 3 main types:
warning: #177-D: variable " " was declared but never referenced
warning: #174-D: expression has no effect
warning: #68-D: integer conversion resulted in a change of sign
Have anyone encountered these warnings ?
I'm suspecting my µvision version... if anyone managed to compile the example under µvision 4 or 5 ?
Thank you
Best regards
We never got a reply from NI. I don't know if the bug I found got fixed after LabVIEW 2011.
Perhaps someone from NI can tell us if CAR##327027 was fixed and see if that is related to the issue Himura_Kenshin is seeing.
Regards,
Fab
Certified LabVIEW Architect * Certified Professional Instructor * LabVIEW Champion

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