This pr adds initial support for creating a cross-compile tool chain for arbitrary architectures. For now only `aarch64` and `riscv64` are implemented, but simlpy adding another architecture to the list of supported platforms in each package should mostly work with minimal patches.
In order to build native gcc for aarch64, you can run
```
nix-build --expr '((import ./tidepool).packages.foundation.gcc.versions."13.2.0-stage4".package.extend { platform = { build = "aarch64-linux"; host = "aarch64-linux"; target = "aarch64-linux"; }; }).package'
```
or
```
nix-build tidepool -A packages.foundation.gcc.latest.packages.aarch64-linux.aarch64-linux.aarch64-linux
```
Running this command:
- Uses [foundation](https://git.auxolotl.org/auxolotl/foundation) to bootstrap i686 gcc
- Incrementally bootstraps x86_64 gcc from i686
- Runs through the same incremental process, but this time using x86_64 gcc we previously built to bootstrap aarch64
- Build the final native aarch64 gcc
Co-authored-by: Jake Hamilton <jake.hamilton@hey.com>
Reviewed-on: #14
Reviewed-by: Jake Hamilton <jake.hamilton@hey.com>
Co-authored-by: Victor Fuentes <vlinkz@snowflakeos.org>
Co-committed-by: Victor Fuentes <vlinkz@snowflakeos.org>
Work in progress cross compiler for x86_64. I've managed to get a full x86_64 gcc using the binaries built from foundation, and am working on implementing their builds into tidepool.
### Bootstrapping steps
0) Start with i686 tools (gcc, binutils, musl, etc)
1) Build binutils targeting x86_64-linux
2) Build a minimal gcc cross compiler using the cross binutils. This minimal cross compiler does not have support for libc, so is pretty much only useful for building musl or glibc.
3) Use the minimal cross compiler to build x86_64-linux glibc or musl
4) Now that we have a cross compiler and x86_64-linux libc, we can build gcc for the target architecture!
5) Profit! We can now build anything x86_64 using our gcc compiler!
Co-authored-by: Jake Hamilton <jake.hamilton@hey.com>
Reviewed-on: #8
Reviewed-by: Jake Hamilton <jake.hamilton@hey.com>
Co-authored-by: Victor Fuentes <vmfuentes64@gmail.com>
Co-committed-by: Victor Fuentes <vmfuentes64@gmail.com>
I am 0.8 sure this is a typo, I've never seen this being referred to as topographic sorting!
Reviewed-on: #5
Reviewed-by: Jake Hamilton <jake.hamilton@hey.com>
Co-authored-by: Alex Kladov <aleksey.kladov@gmail.com>
Co-committed-by: Alex Kladov <aleksey.kladov@gmail.com>
