5.1.1 General options

-h
Print a list of all options and exit.
-?
Same as -h, waiting after each screenfull for the enter key.
-i
Print copyright and other information. You can supply a qualifier, as -ixxx where xxx can be one of the following:
D
: Returns the compiler date.
V
: Returns the short compiler version.
W
: Return full compiler version.
SO
: Returns the compiler OS.
SP
: Returns the compiler processor.
TO
: Returns the target OS.
TP
: Returns the target processor.
a
: Returns a list of supported ABI targets
c
: Returns a list of supported CPU instruction sets
f
: Returns a list of supported FPU instruction sets
i
: Returns a list of supported inline assembler modes
o
: Returns a list of supported optimizations
r
: Returns a list of recognized compiler and RTL features
t
: Returns a list of supported targets
u
: Returns a list of supported microcontroller types
w
: Returns a list of supported whole program optimizations
-l
Print a line stating which program this is and its version.
-n
Ignore the default configuration file. You can still pass a configuration file with the @ option.
-VNNN
set the version number to NNN (appends -NNN to the binary name)