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Specify command-line options with an environment variable
The ARMCC5_ASMOPT environment variable can hold command-line options for the assembler.
The syntax is identical to the command-line syntax.
The assembler reads the value of ARMCC5_ASMOPT and
inserts it at the front of the command string. This means that options specified in
ARMCC5_ASMOPT can be overridden by arguments on the
command line.