3 
–Uname
The –Uoption removes any initial definition of the cpp(1) symbol name. See cpp(1) for more information. You cannot use this option with the -xloption.
–V
The –Voption prints the version number of each compilation pass.
–V0 and –V1
The –V0and –V1options turn on sets of options that insert checks into the object file, as follows:
–V0Equivalent to -C, -H, -L, and -s0
–V1Equivalent to –C, –H, –L, and –s1
–v
The –v(verbose) option prints the command line used to call each compilation pass.
–w
By default, the compiler prints warnings about inconsistencies it finds in the input program. The –woption turns off the warnings.
To turn off warnings in a program comment, use this command:
hostname% {$w-}
-xa
Same as -a.
-xarch=a
(Solaris 2.x only) The -xarch=aoption limits the set of instructions the compiler may use.
