
Without the change both `s390` and `s390x` `glibc` builds fail as https://hydra.nixos.org/build/303208799: In file included from ../sysdeps/s390/utf16-utf32-z9.c:501, from ../sysdeps/s390/multiarch/utf16-utf32-z9.c:20: ../iconv/loop.c: In function '__from_utf16_loop_vx_cu': ../iconv/loop.c:274:1: error: %r11 cannot be used in 'asm' here 274 | } | ^ Disable the `-fno-omit-frame-pointer` for now.