C89cc.sh – standalone C89/ELF64 compiler in pure portable shell

5 comments

• kelsey98765431 2 hours ago
  Would be a lot better if it came with tests. Please do this justice and dont let it rot as a gist, make a real repo and add some docs and at least smoke tests or some kind. Thanks
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  • fuhsnn 1 hour ago
    Don't understand why you were downvoted. An untested C compiler is simply worthless.
• _ache_ 59 minutes ago
  I'm tempted to execute it, but it may as well be shellcode I couldn't tell.
• gaigalas 1 day ago
  Single standalone file, no external tools used, PATH='' (empty), portable (bash, dash, ksh, zsh), produces x86 ELF executables, has mini-libc builtin.

  Usage:

  printf 'int main(){puts("hello");return 0;}' | sh c89cc.sh > hello

  chmod +x hello

  ./hello

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  • angry_octet 2 hours ago
    I can't think of a reason to use c89cc.sh, but I salute this effort nonetheless.
• jey 1 hour ago
  It targets x86-64/ELF? I thought it would target `sh` to be portable?
• dmitrygr 2 hours ago
  Many parts of this are clearly autogenerated, but that in no way diminishes the sickening impressiveness of it!
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  • userbinator 1 hour ago
    It would be far more interesting to look at what this was "compiled" from; it looks like the output of a state-machine generator.
  • phire 1 hour ago
    It does make it a little hard to understand how the parser/ast_builder works.

    But the rest seems easy enough to understand.

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    • fuhsnn 1 hour ago
      > It does make it a little hard to understand

      Or much easier to backdoor...