3.17.51 VMS Options

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.