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Via files are plain text files that allow you to specify assembler command-line arguments and options.
Typically, you use a via file to overcome the command-line length limitations. However, you might want to create multiple via files that:
In general, you can use a via file to specify any command-line
option to a tool, including
--via. This means that you
can call multiple nested via files from within a via file.
When the assembler is invoked it:
Replaces the first specified
with the sequence of argument words extracted from the via file,
including recursively processing any nested
in the via file.
Processes any subsequent
in the same way, in the order they are presented.
That is, via files are processed in the order you specify them, and each via file is processed completely including processing nested via files before processing the next via file.