topic Re: link error undefined reference in MCUXpresso General

link error undefined reference

harrykoukoutos — Thu, 15 Nov 2018 10:19:05 GMT

I am using MCUXpresso to build an MK10 project. The startup file, startup_mk10d10.cpp, cannot find functions in other modules, for example interrupt service routines or utilities. The IDE gives , as an example, an undefined reference to `PIT1_DriverIRQHandler' error, although it is defined in an other file and a definition line is included. It links only main(). Clearly I have set something wrong! How should I define routines in other modules? Please note that all other files link properly.

Thank you,

Harry Koukoutos

Re: link error undefined reference

kerryzhou — Mon, 19 Nov 2018 09:30:32 GMT

Hi Harry Koukoutos,

I highly recommend you to refer to the nxp official code, it will have the according startup file, and the according project.

Please download it from this link:

https://mcuxpresso.nxp.com/en/select

Select the processors as your K10D100M chip, then generate the MCUXpresso IDE project, and try it again.

If you still have question about it, please kindly let me know.

Have a great day,
Kerry

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Re: link error undefined reference

lpcxpresso_supp — Tue, 20 Nov 2018 09:01:58 GMT

Given that the file extension of your startup file is ".cpp", I suspect the issue is C vs C++ linkage. There is some information in the following FAQs (which although originally written for LPCXpresso IDE, still apply to MCUXpresso IDE):

Interrupt Handlers in C++ applications

https://community.nxp.com/message/630742

Regards,

MCUXpresso IDE Support