Cross-compiling a static binary from GitHub Actions

[Vladimir Panteleev]

On Saturday, 25 September 2021 at 07:59:08 UTC, Vladimir 
Panteleev wrote:
> The problem: I made a tool written in D, but some people are 
> having trouble building/running it on non-x86_64 architectures 
> across various distributions. (I managed to build a static 
> binary for x86_64.)
>
> My goal: build a static binary of a D program for Linux-AArch64 
> from GitHub Actions (as an artifact).

I recently found a nice solution: Nix has excellent support for 
building and cross-compiling static binaries (which don't depend 
on any Nix stuff). As a bonus, because Nix builds are 
deterministic, the binaries are fully bit-wise reproducible. It 
was very easy to even go a step further and rebuild some 
dependencies (ncurses, zlib) with LTO, something which would have 
been quite cumbersome on e.g. Debian.

https://github.com/CyberShadow/btdu/blob/master/flake.nix