LTO removes necessary symbols from NXP i.MX RT10xx boards

[timoaarnipuro-qt]

When building application binaries for NXP i.MX RT 10xx boards (tested on 1060 EVKB and 1064 EVK), with CONFIG_LTO=y, symbols image_vector_table and boot_data get removed. The board does not boot up.

To Reproduce
Steps to reproduce the behavior:

1. Set CONFIG_ISR_TABLES_LOCAL_DECLARATION=y and CONFIG_LTO=y
2. west build -b mimxrt1064_evk --shield rk043fn66hs_ctg zephyr/samples/basic/blinky
3. west flash
4. Board does not boot. (arm-none-eabi-objdump -D build/zephyr/zephyr.elf does not show image_vector_table and boot_data at expected addresses)

Expected behavior

Symbols are there and board boots.

Impact

Blocker with workaround.

Environment (please complete the following information):

• OS: Linux
• Toolchain: Tested with zephyr-sdk-0.17.0 and arm_gcc_12_3_1
• Commit SHA: 4189364 (4.1)

Additional context

Marking the symbols undefined for the linker fixes the issue and the symbols are then kept and the board boots normally.

[github-actions]

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