esp-idf/tools/test_apps/build_system/ld_non_contiguous_memory/main/linker.lf

[sections:main_dram]
entries:
    buf1
    buf2

[scheme:main_dram_config]
entries:
    main_dram -> dram0_bss

[mapping:main]
archive: libmain.a
entries:
    * (main_dram_config)