topic Re: MCUXpresso 11.7.0: Changed behaivoir in build in MCUXpresso IDE

MCUXpresso 11.7.0: Changed behaivoir in build

Svenifax — Wed, 22 Mar 2023 11:29:00 GMT

Hello,

in MCUXpresso 11.7.0 my projects can't build anymore in the linker step.

To avoid the to manage the order of my libraries during linking, I'm using the -Wl,--start-group -lA -lB -Wl,--end-group option provided by gcc linker.

This was done by editing the Command line pattern in:

ProjectProperties->C/C++ Build->Settings: MCU C++ Linker->Command Line pattern:

${COMMAND} ${FLAGS} ${OUTPUT_FLAG} ${OUTPUT_PREFIX}${OUTPUT} -Wl,--start-group ${INPUTS} -Wl,--end-group

This was working perfectly up to MCUXpresso version 11.6.1

In MCUXpresso version 11.7.0 this line doesn't work anymore, because all the libraries are not included in the ${INPUTS} variable. When looking at the command line the libraries are listed behind -Wl,--end-group. So I get linker errors if the order of libraries isn't correct.

This is only happen when using external builder, when using internal builder everything is fine.

Is it possible to recover the old behaivoir in the next MCUXpresso release?

Re: MCUXpresso 11.7.0: Changed behaivoir in build

Alice_Yang — Fri, 24 Mar 2023 10:51:58 GMT

Hello @Svenifax

I will report your request to IDE team, thanks for your sharing.

Alice

Re: MCUXpresso 11.7.0: Changed behaivoir in build

lpcxpresso_supp — Thu, 30 Mar 2023 20:25:19 GMT

Indeed, MCUXpresso IDE v11.7.0 comes with a newer CDT than the one from v11.6.1. There was a change related to your finding - see the first item under the Build section from [1]. The change is related to bug [2] from CDT.

Long story short, the new CDT introduced a new ${EXTRA_FLAGS} argument in the linker's command line pattern. Also, there's no objects.mk (previously used for passing user objects and libraries) generated anymore for automatically managed projects.

You should update the project settings based on the given information. I don't think the behavior from current CDT is going to change any time soon.

Regards,
MCUXpresso IDE Support

[1] https://wiki.eclipse.org/CDT/User/NewIn107

[2] https://bugs.eclipse.org/bugs/show_bug.cgi?id=577263

Re: MCUXpresso 11.7.0: Changed behaivoir in build

Svenifax — Fri, 31 Mar 2023 09:48:38 GMT

Thanks for help, ${EXTRA_FLAGS} have to used.

This line works:

${COMMAND} ${FLAGS} ${OUTPUT_FLAG} ${OUTPUT_PREFIX}${OUTPUT} ${INPUTS} -Wl,--start-group ${EXTRA_FLAGS} -Wl,--end-group

Regards,
Sven

Re: MCUXpresso 11.7.0: Changed behaivoir in build

scornelius — Thu, 14 Dec 2023 16:57:20 GMT

I made this change and under MCUXpresso, everything is building correctly for my board, and library projects.
But, our server based Linux build system is using objects.mk and just the compilers, not MCUXpresso.
Is there a suggested way to export ${EXTRA_FLAGS} into an objects.mk file?
Thank you,
Steve
PS: using IDE11.8.1