* EXTRA_ASFLAGS: The content of this variable is appended after ASFLAGS when assembling.
* EXTRA_CPPFLAGS: The content of this variable is appended after CPPFLAGS when using a C preprocessor on assembly files.
* EXTRA_ASFLAGS: The content of this variable is appended after ASFLAGS when assembling.
* EXTRA_CPPFLAGS: The content of this variable is appended after CPPFLAGS when using a C preprocessor on assembly files.