cmake STOCHAS_BUILD_ARCH examples

surge-synthesizer/stochas cmake/versiontools.cmake :27 

execute_process(
    COMMAND uname -m
    OUTPUT_VARIABLE STOCHAS_BUILD_ARCH
    OUTPUT_STRIP_TRAILING_WHITESPACE
  )

surge-synthesizer/stochas cmake/versiontools.cmake :39 

message( STATUS "  buildarch is ${STOCHAS_BUILD_ARCH}" )