Issue Building CM0Plus project

[lame_stmr]

Hello,

Context: New to stm and HAL. Creating a new dual-core STM32 project on a NUCLEO-WL55JC1 board. Starting from cubeMX generated code with basically only RTC initialized on Core M4. Using STM32CubeWL Firmware package v1.3.1 . M4 builds and loads good.

Issue: M0 does not build and I get these errors and warnings:

1. C:/Users/Person/Documents/STM32CubeIDE/workspace_LoRaWPC/noTomorrow/Drivers/STM32WLxx_HAL_Driver/Src/stm32wlxx_hal_uart.c: In function 'HAL_UART_Transmit_IT':
../../Drivers/CMSIS/Device/ST/STM32WLxx/Include/stm32wlxx.h:209:13: warning: implicit declaration of function '__LDREXW' [-Wimplicit-function-declaration]
209 | val = __LDREXW((__IO uint32_t *)&(REG)) | (BIT); \
| ^~~~~~~~
C:/Users/Person/Documents/STM32CubeIDE/workspace_LoRaWPC/noTomorrow/Drivers/STM32WLxx_HAL_Driver/Src/stm32wlxx_hal_uart.c:1373:7: note: in expansion of macro 'ATOMIC_SET_BIT'

I get a similar warning for '__STREXW'

2. Then 9 of these type errors:

C:/Users/Person/Documents/STM32CubeIDE/workspace_LoRaWPC/noTomorrow/Drivers/STM32WLxx_HAL_Driver/Src/stm32wlxx_hal_uart.c:3468:(.text.UART_WaitOnFlagUntilTimeout+0x36): undefined reference to `__LDREXW'

C:/ST/STM32CubeIDE_1.19.0/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.0.202411081344/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld.exe: C:/Users/Person/Documents/STM32CubeIDE/workspace_LoRaWPC/noTomorrow/Drivers/STM32WLxx_HAL_Driver/Src/stm32wlxx_hal_uart.c:3468:(.text.UART_WaitOnFlagUntilTimeout+0x50): undefined reference to `__STREXW'

Could anyone please help me? Is there a problem with my toolchain or configuration or something? Also, why would these issues be coming from the hal uart c file if im only using RTC in M4? I'd really appreciate a clarification. Thank you!