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OCaml static linking

Authors: Nova[有線魔女] <novaburst@envs.net>

Date: 25 Jan, 2022

Since quite a while ago (a month or so I guess) I had read this blog post by OCamlPro[1] about generating static PIE with OCaml.

The first project on where I have tried doing so was Logarion[2] , and afterwards bumpmap-tool[2], each using a different build system.

In the 1st case I had to add the field '(flags (:standard -cclib -static))' to the 'cli/dune' file and rebuilt with 'dune build'

As for the 2nd case I added '-cclib -static' to the 'ocamlopt' flags in the command line and rebuilt.

I ran the ldd command in both (test done on a musl-based distro) only to have this output:

- /lib/ld-musl-x86_64.so.1: (insert executable name here): Not a valid dynamic program

Which means that it does actually work, but I'm not sure whether it could work for bigger projects.

I think that's all I've got to say here.

Links

[1]:

https://www.ocamlpro.com/2021/09/02/generating-static-and-portable-executables-with-ocaml/

[2]:

http://logarion.orbitalfox.eu

[3]:

https://git.sr.ht/~novaburst-dev/bumpmap-tool

Extras

[Static builds of my own branch of Logarion]:

https://novaburst.bsd.tilde.team/logarion/