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Problems with C using Linux and Exodriver

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#1 SteveOll

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Posted 02 April 2013 - 02:44 PM

Hi, I've been attempting build a simple C program, but I am running into a problem in that the code will compile but it won't build and returns the following error messages: ----------Build Started-------- /bin/sh -c '"make" -j 4 -f "Test_wsp.mk"' ----------Building project:[ TestU3HV - Debug ]---------- make[1]: Entering directory `/home/steveoll/Documents/Test' gcc -o ./Debug/TestU3HV ./Debug/main.o "-L." ./Debug/main.o: In function `main': /home/steveoll/Documents/Test/main.c:23: undefined reference to `openUSBConnection' /home/steveoll/Documents/Test/main.c:26: undefined reference to `getCalibrationInfo' /home/steveoll/Documents/Test/main.c:30: undefined reference to `eDAC' /home/steveoll/Documents/Test/main.c:37: undefined reference to `eAIN' /home/steveoll/Documents/Test/main.c:44: undefined reference to `closeUSBConnection' collect2: ld returned 1 exit status make[1]: *** [Debug/TestU3HV] Error 1 make[1]: Leaving directory `/home/steveoll/Documents/Test' make: *** [All] Error 2 ----------Build Ended---------- 0 errors, 0 warnings The above is taken from the CodeLite C/C++ IDE (Revision 4189) although I get similar errors with Geany and Eclipse IDEs I am not sure what the problem is as I am sure that all of the header files are correctly referenced/located. If there is anyone out there that is familiar with building C/C++ programs for Labjack with Linux, your help would be appreciated. -Steve

#2 LabJack Support

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Posted 02 April 2013 - 04:37 PM

It looks like you need to add the u3.h and u3.c files to your project/build as that is where the openUSBConnection, getCalibrationInfo, etc. functions are provided. They provide helper functions but are not built as libraries. If you are doing your own Makefile, take a look at the one from our examples:


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