esp-idf/components/heap/linker.lf

[mapping:heap]
archive: libheap.a
entries:
    if HEAP_TLSF_USE_ROM_IMPL = n:
        tlsf (noflash)
    multi_heap (noflash)
    if HEAP_POISONING_DISABLED = n:
        multi_heap_poisoning (noflash)