Building this configuration
cmake -DTFM_PLATFORM=mps2/an521 -DTFM_PARTITION_AUDIT_LOG=ON -DTFM_PROFILE=profile_medium ..
gives this error
ld: spm/libtfm_spm.a(spm_ipc.o):(.rodata.memory_data_list+0x1c): undefined reference to `tfm_sp_audit_log_stack'
Also affects other platforms.
Profile Medium selects IPC model by default. TF-M IPC model disables audit log service since audit log doesn't implement IPC model interface yet.
Please see: https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/tree/config/tfm_ipc_config_default.cmake
If audit log service is forced to be enabled in Profile Medium, it is non-compliant to IPC model and the build will fail.