3.18.56 VMS Options

These ‘ -m ’ options are defined for the VMS implementations:

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.
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 .