many "undefined reference to" errors while building Nios V software - many "undefined reference to" errors while building Nios V software Hi, I created a Nios V based software, where VGA.c, VGA.h and main.c are included, after building the project, it indicated few "undefined reference to" errors, as shown in figure below. However, they are all defined in VGA.c, VGA.h as shown in figure, I don't know why this error got. Anyone can share any advice? Thanks in advance. Replies: Re: many "undefined reference to" errors while building Nios V software Hi I’m glad that your question has been addressed, I now transition this thread to community support. If you have a new question, Please login to ‘ https://supporttickets.intel.com/s/?language=en_US’ , view details of the desire request, and post a feed/response within the next 15 days to allow me to continue to support you. After 15 days, this thread will be transitioned to community support. The community users will be able to help you on your follow-up questions. Regards Jingyang, Teh Replies: Re: many "undefined reference to" errors while building Nios V software Thanks @JingyangTeh_Altera , followed your advice, the error was fixed. Replies: Re: many "undefined reference to" errors while building Nios V software Hi Could you try rengenerating the Cmakelist again. https://community.intel.com/t5/Nios-V-II-Embedded-Design-Suite/Nios-V-Processor-Installation-and-Hello-World-Execution-Part-2/m-p/1552556#M52381 Try going through 5.1.2 and 5.1.3 to update the list of c and h files in your project. If you have done that could you try closing and reopening your project in the IDE. Regards Jingyang, Teh