FRC Toolchain 2016 on Manjaro (Arch) Linux

Technical C/C++
1

I can’t seem to get the FRC Toolchain working on my Linux computer. When I try to compile a small test program, like so:


arm-frc-linux-gnueabi-g++ -std=c++14 Robot.cpp

I get a set of errors like “/tmp/ccvh58IH.o:Robot.cpp:function .LTHUNK10: error: undefined reference to ‘vtable for RobotDrive’”. This is repeated for just about each WPILib class I used, such as SampleRobot, Joystick, RobotBase, etc.

Is the linker just not finding the right library files? I’ve checked, and the files do exist in “/usr/arm-frc-linux-gnueabi/lib”. I’ve also tried using:


arm-frc-linux-gnueabi-g++ -std=c++14 Robot.cpp -I /usr/arm-frc-linux-gnueabi/include/ -L /usr/arm-frc-linux-gnueabi/lib/

That returns the same errors.

Any ideas what I’m doing wrong, or how I can fix this?

2

It looks like you’re not compiling with wpilib. Make sure you link against the wpilib library, which you get by installing the plugins.

3

You’ll probably need to specify -lwpilib

4

Heh… whoops. I realized what my problem was shortly after posting this (what I actually need is “-lwpi”) but didn’t have time until now to reply. Thanks for the help, though! :smiley: