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    • Building LwIP from a CubeMX project

    Posted by mkerr@atspl.com.au on 2017-03-07 06:08

    I have a CubeMX project which uses LwIP. I have to make some changes to get it to compile. I would like to get confirmation from the community that these changes are correct, and also capture these changes for anyone else who might see this problem.

    I am using Linux Ubuntu (Release: 15.10). I have created a project using CubeMX (Version 4.17.0; STM32Cube_FW_F4_V1.13.0) and imported it into System Workbench (Version: 1.11.0.201610101240).

    When I compile I get the following error:
    error: redefinition of 'struct timeval'

    To fix this I have done the following:
    - Open the LWIP Configuration dialog in the CubeMX project.
    - Under the 'User Constants' tab, add a constant 'LWIP_TIMEVAL_PRIVATE' with value 0.

    When I compile I get the following warning:
    warning: "BYTE_ORDER" redefined

    To fix this I have done the following:
    - Open file /Middlewares/Third_Party/LwIP/system/arch/cpu.h
    - Comment out '#define BYTE_ORDER LITTLE_ENDIAN'

    Reads: 11815
    Posted by mkerr@atspl.com.au on 2017-03-08 01:53
    The last fix I mentioned (comment out BYTE_ORDER) get overridden on the next code generation from CubeMX. Any suggestions on how to remove this define in a CubeMX friendly way?

    Posted by mkerr@atspl.com.au on 2017-03-14 02:03

    Thanks for adding the link to the ST thread. I haven't needed to include cc.h, but i'll keep it in mind.

    I'm surprised noone else has had the issuew ith BYTE_ORDER. I'll raise my issue on the ST website and add a link to it here.