CubeMX ST ARM Clang linker not compatible

[gf1]

Hi everyone,

I’m using the new Arm Toolchain for Embedded with CMake. I generated a project template from STM32CubeMX using the following settings:

• Toolchain/IDE: CMake
• Default compiler/linker: Arm-Clang

Compilation works fine, but when linking starts, I get this error:

ld.lld: error: STM32G474XX_FLASH.ld:105: symbol not found: READONLY

It looks like the Arm toolchain (even the latest v21.1.1) doesn’t support the READONLY keyword. It’s not a big deal to adjust the .ld file - just remove the READONLY keywords - but it would be nice if the generated template worked out of the box.

Am I missing a setting somewhere? Is there an alternative/better way to obtain the linker file?

Edit: I'm using the STM32G474.

[Souhaib MAZHOUD]

Hello @gf1 

Could you please provide the name of the MCU you are using?

[gf1]

Hello, I just added the information in the initial post. I'm using a STM32G474.

[Souhaib MAZHOUD]

Hello @gf1 

Could you describe the steps followed when using the Arm Toolchain for Embedded with CMake? From my side, I haven't encountered any issues when compiling with STM32CubeCLT 1.19.0.

[gf1]

I think the issue is that the files generated with the Starm-Clang setting aren’t fully compatible with the plain Arm Toolchain for Embedded.

To get the project to compile, I had to:

• Adjust the toolchain path
• Remove the starm- prefix
• Update the names used for objcopy and size
• Adapt the TARGET_FLAGS so they match ATfE requirements

However, even after these changes, the plain Clang linker still throws the error:

symbol not found: READONLY