ARMClang: need to use @ instead of --via= for response files
I wrote a tool chain file to compile my project with armclang and got link errors because: armar and armlink uses the option '--var=' instead of '@' to read reponse files. I found out, that I can change this with 'CMAKE__RESPONSE_FILE_LINK_FLAG'. Is it the official way to solve such problem? if yes, the documentation for this variable is missing.