disable the combination of st-iar-mesh example

[studavekar]

We have seen inconsistent failure for above combination disabling it for now.
will enable when we update to IAR 8.XX

Todos

• Tests

[bridadan]

Ok with me as long as we communicate clearly that this is a temporary measure until a fix/root cause can be found.

Perhaps we should update this issue with the current workaround: #4879

[LMESTM]

Hi - wouldn't you rather investigate the root cause of #4879 ?
Are those failures visible and reproduced anywhere else than in the ci environment ?
You are reporting here "inconsistent failure" - could you be more precise : is this always the same build error or sometimes different ones ?

[studavekar]

@LMESTM after further investigation looks like we may see failures with other platforms as well

iasmarm --cpu Cortex-M4F -D__CORTEX_M4 -DARM_MATH_CM4 -D__FPU_PRESENT=1 -D__MBED_CMSIS_RTOS_CM -D__CMSIS_RTOS -DFSL_RTOS_MBED -DCPU_MK66FN2M0VMD18 -f ./BUILD/K66F/IAR/.includes_d5bd6946ec713c5c47ef4b6c7c6f9a4c.txt -o ./BUILD/K66F/IAR/mbed-os/targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_K66F/device/TOOLCHAIN_IAR/startup_MK66F18.o ./mbed-os/targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_K66F/device/TOOLCHAIN_IAR/startup_MK66F18.S

Before this we had always seen failure only with ST family devices. May because CI scheduler, runs in this pattern causing above combination to fail.

I will probably close this PR after root causing the problem.

[LMESTM]

@studavekar thx

[deepikabhavnani]

Seems we had this issue earlier as well in CI. #3934

@bridadan - Did you came to conclusion that it was related to working directory path (including project name) > 65 characters.
IAR follows _MAX_PATH limitation of windows and will error out if path exceeds _MAX_PATH character which is 256.

[bridadan]

@deepikabhavnani I didn't really come to any conclusion unfortunately, but yes there did seem to be a correlation between path length and failure rate. Sounds similar to what @studavekar has found as well.

[0xc0170]

@studavekar Can we close this or it's still relevant?

[studavekar]

Closing this a issue PR, as fix for IAR been added #4977