mescc-tools binary package in Ubuntu Focal amd64

 The tools included provide very minimal functionality tools used in
 very early bootstrap of a toolchain.
 .
 blood-elf: generate ELF debug tables in M1-macro format from M1-macro
 assembly files
 .
 exec_enable: mark files as executable
 .
 get_machine: identify running hardware architecture
 .
 kaem: run shell scripts without a shell
 .
 hex2_linker: The trivially bootstrappable linker that is designed to
 be introspectable by humans and should you so desire assemble hex
 programs that you write.
 .
 M1-macro: The universal Macro assembler that can target any
 reasonable hardware architecture.

Source package