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MCU-PLUS-SDK-AM243X: Append/ Modify compiler options for SDK build

Fabian Sorkalla
Prodigy 220 points
Part Number: MCU-PLUS-SDK-AM243X

Hello,

we would like to modify/ append some compiler options for the SDK build.

I am intereted in adding the flag for Link time optimization to the SDK build (-lto). since it is recommended to add the flag during linking and compiliation (Compiler Docu chapter 11.3.1.1).

Is there anyway to append additional compiler options to the SDK build? 

I tried using the environment variable CFLAGS like so:

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CFLAGS="-flto" make -f makefile.am243x nortos_r5f.ti-arm-clang PROFILE=Release -n
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

But this replaces the CFLAGS and does not append.

It would only be possible to append to CFLAGS if the makefiles are modified like this:

 

Is there any other way I am not aware of which I can use to append the compiler flag without modifying the SDK makefiles? 

Thanks Fabian

  • +1
    TI__Guru*** 135025 points

    Hello Fabian,

    Modifying the makefile is the method I am aware of.

    You can find a makefile example of how to use LTO in a project like those under C:\ti\mcu_plus_sdk_am243x_09_00_00_35\examples\networking\enet_loopback

    Best Regards,

    Ralph Jacobi