https://sourceware.org/bugzilla/show_bug.cgi?id=27047
--- Comment #1 from Sergey Belyashov <sergey.belyashov at gmail dot com> --- .bss section is supported. But .bss pseudo operation is not supported. You can create .bss section using .section pseudo operation. Just try: $ cat a.s .section .bss myvar: .ds 2 $ z80-unknown-elf-as a.s $ z80-unknown-elf-readelf -t a.out ... [ 3] .bss NOBITS 00000000 000034 000002 00 0 0 1 [00000003]: WRITE, ALLOC ... -- You are receiving this mail because: You are on the CC list for the bug.