Constant SHT_REL 

pub const SHT_REL: u32 = 9;

sh_type for an ELF relocation table (no addend) — Elf64_Rel entries, 16 bytes each: r_offset:8 ; r_info:8. Used by BPF (LLVM emits SHT_REL, not SHT_RELA, for BPF objects).