RealView Compilation Tools Compiler Reference Guide - ARM ...

Compiler Command-line Options
Table 2-5 Compiling without the -o option (continued)
Compiler option Action Usage notes
-S produces an output file whose name
defaults to the name of the input file with
the filename extension .s
-E writes output from the preprocessor to the
standard output stream
(No option)
produces an executable image with the
default name of __image.axf
none of -o, -c, -E or -S
is specified on the
command line
Note
This option overrides the --default_extension option.
See also
• --asm on page 2-8
• -c on page 2-12
• --default_extension=ext on page 2-22
• --depend=filename on page 2-23
• --depend_format=string on page 2-24
• -E on page 2-33
• --interleave on page 2-50
• --list on page 2-55
• --md on page 2-60
• -S on page 2-80.
2.1.87 -Onum
This option specifies the level of optimization to be used when compiling source files.
Syntax
-Onum
Where num is one of the following:
0 Minimum optimization. Turns off most optimizations. It gives the best
possible debug view and the lowest level of optimization.
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