config/auto/gc.pm - Garbage Collection
Sets memory allocator.
--gc command-line option enables the configurer to choose among several garbage collectors.
Current available options are:
Stop-the-world mark & sweep
Infinite memory "collector"
New style mark & sweep
Generational M&S based on MS2
The choice is stored as
and available (uppercased) as PARROT_GC_DEFAULT_TYPE in parrot/config.h
For backwards compatibility with parrot 3.1.0 and earlier,
an empty entry
gc_flag is maintained.
(It used to be used in Makefiles to append to the C compiler flags.)