I used the cmake + ninja and got the rule for compiling ASM file
command = \armasm.exe @$RSP_FILE -o $out $in
description = Building ASM object $out
rspfile = $RSP_FILE
rspfile_content = $DEFINES $INCLUDES $FLAGS
but the @ is not recognised by armasm.exe, and I checked the cmake code.
I found the CMAKE_${lang}_RESPONSE_FILE_LINK_FLAG for ASM is not be set in ARMCC-ASM.cmak.
Why is it?