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   gcc    ( 1 )

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Параметры подробно (Options detail)

VMS

These -m options are defined for the VMS implementations:

       -mvms-return-codes
           Return VMS condition codes from "main". The default is to
           return POSIX-style condition (e.g. error) codes.

       -mdebug-main=prefix
           Flag the first routine whose name starts with prefix as the
           main routine for the debugger.

       -mmalloc64
           Default to 64-bit memory allocation routines.

       -mpointer-size=size
           Set the default size of pointers. Possible options for size
           are 32 or short for 32 bit pointers, 64 or long for 64 bit
           pointers, and no for supporting only 32 bit pointers.  The
           later option disables "pragma pointer_size".