AM6422: CCS-How to use the -fno-short-enums in R5 FreeRTOS project

xixiguohx

Intellectual 710 points

Part Number: AM6422

Tool/software:

Hi Ti experts,

I'm using customized board based on AM6422. Linux based on SDK 09.02.00.08 and MCU SDK based on 09_02_01_05.

I'm using CCS12.1.0 and TI Clang v3.2.2.LTS

I want to define enum type to 4bytes by following setting:

When building the project I will get the warnings about the enum type incompatible warnings. For the FreeRTOS kernel and driver libs, I have already rebuild them to use 4bytes enum. But for the libs which are provided in compiler ti-cgt-armllvm still have the enum incompatible warnings like bellow,

#16027-D object files have incompatible enumeration types ("divsi3.S.obj in C:\ti\ti-cgt-armllvm_3.2.2.LTS\lib\clang/15.0.7/lib/armv7r-ti-none-eabihf/libclang_rt.builtins.a" = packed, "./syscfg/ti_dpl_config.o" = 32-bit)

#16027-D object files have incompatible enumeration types ("sprintf.c.obj in C:\ti\ti-cgt-armllvm_3.2.2.LTS\lib\armv7r-ti-none-eabihf/c/libc.a" = packed, "./syscfg/ti_dpl_config.o" = 32-bit)

#16027-D object files have incompatible enumeration types ("write.c.obj in C:\ti\ti-cgt-armllvm_3.2.2.LTS\lib\armv7r-ti-none-eabihf/c/libsysbm.a" = packed, "./syscfg/ti_dpl_config.o" = 32-bit)

How should I do to solve these warnings?

Best Regards

xixiguo

1 month ago

0 xixiguohx 1 month ago

Intellectual 710 points

Hi,

Is there any updates here?

Best Regards

xixiguo

0 Alan Phipps 1 month ago in reply to xixiguohx

TI__Expert 4600 points

Hi xixiguo,

You're correct in your observation that the above warnings are due to the fact that the libraries shipped with the compiler are not built to use 4-byte enumerations. Presently there is no way to rebuild these libraries. It may be possible to suppress the warning if you can only prove that the enumerated types used by your code and the runtime library code aren't shared between them in any way. See documentation for --diag_suppress, (e.g. -Wl,--diag_suppress=16027). However, if they use the same enumerated types, then you will likely run into issues that will be difficult to debug.

0 xixiguohx 1 month ago in reply to Alan Phipps

Intellectual 710 points

Hi Alan，

Thanks for your reply! It's quite clear.

Will the libraries shipped with the compiler be updated to support 4-byte enumeration? If so, which compiler version will support it?

Best Regards

xixiguo

+1 Alan Phipps 1 month ago in reply to xixiguohx

TI__Expert 4600 points

Presently we have no plan to ship libraries for this. I filed an enhancement request EXT_EP-11999 for us to consider it, and you are welcome to follow that. If we decide to, it'll be in a new compiler version, likely 5.0 or 6.0.

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AM6422: CCS-How to use the -fno-short-enums in R5 FreeRTOS project