Using the GNU Compiler Collection (GCC)

3.17.10 DEC Alpha/VMS Options

These ‘-m’ options are defined for the DEC Alpha/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.