How to install libdev-ssl and openssl for the powerpc64-unknown-linux-gnu target?

[philipwilk]

I've tried doing the basic 'recipe' to install it but ubuntu does not support the ppc64 arch so i have modified all the scripts and changed the powerpc64-unknown-linux-gnu dockerfile to use debian (it has a ppc64 port) in the hope of getting a bit closer but apt-get still cannot find libssl-dev if i try install from pre-built commands, even if I manually add port sources etc.
I saw that linux-image.sh has some lines where arch related packages are downloaded, so I added "libssl-dev:${arch}" to the list and as expected the ppc64 package is successfully installed, but is removed before the cargo build is attempted so openssl-sys complains of no openssl headers et al existing.

I have tested using regular cargo in a ppc64 qemu kvm which has openssl and libssl-dev installed and get a slow as molasses but successful compile when I set these variables (with a default installation of libssl-dev):

OPENSSL_INCLUDE_DIR=/usr/include/powerpc64-linux-gnu/openssl/ 
 OPENSSL_LIB_DIR=/usr/lib/powerpc64-linux-gnu/ 
 OPENSSL_DIR=/usr/bin

Which file and where in it can i add an apt-get install -y libssl-dev:ppc64 line so it may persist for the duration of the package build?
If i add these envs to the end of my dockerfile with it installed it should work.

For reference, I've copied the latest scripts and dockerfile for the ppc64 target and modified them for debian here, and just need libssl-dev actually installed during the build process for it to work.

[Emilgardis]

doing

echo -e "deb http://ftp.ports.debian.org/debian-ports/ sid main" >> /etc/apt/sources.list
dpkg --add-architecture ppc64
apt-get update

gets me a bit closer

apt-cache policy libssl-dev:ppc64
libssl-dev:ppc64:
  Installed: (none)
  Candidate: 3.0.5-2
  Version table:
     3.0.5-2 500
        500 https://deb.debian.org/debian-ports sid/main ppc64 Packages

apt-get install libssl-dev:ppc64
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 libssl-dev:ppc64 : Depends: libssl3:ppc64 (= 3.0.5-2) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

[Emilgardis]

can sucessfully install the ppc64el package, so probably something weird in sid/unstable right now

[Emilgardis]

This seems to work

file powerpc64.sh

#!/usr/bin/env bash
mv /etc/apt/sources.list /etc/apt/sources.list.bak
mv /etc/apt/sources.d /etc/apt/sources.d.bak
echo -e "deb http://archive.debian.org/debian jessie main\ndeb http://archive.debian.org/debian jessie-backports main\ndeb http://ftp.ports.debian.org/debian-ports unstable main\ndeb http://ftp.ports.debian.org/debian-ports unreleased main" > /etc/apt/sources.list
dpkg --add-architecture ppc64
apt-get update
cd $(mktemp -d)
apt-get -d --no-install-recommends download libssl-dev:ppc64
dpkg -x libssl-dev* /
mv -f /etc/apt/sources.list.bak /etc/apt/sources.list
mv -f /etc/apt/sources.d.bak /etc/apt/sources.d
dpkg --remove-architecture ppc64

Cross.toml:

[target.powerpc64-unknown-linux-gnu]
pre-build = "powerpc64.sh"

fn main() {
    println!("{}, {}", openssl::version::version(), openssl::version::platform());
}

[package]
name = "ssl-test"
version = "0.1.0"
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
openssl = "0.10.41"

$ cross run
[+] Building 1.4s (9/9) FINISHED                                                                                                                                               
 => [internal] load build definition from Dockerfile.powerpc64-unknown-linux-gnu-custom                                                                                   1.3s
 => => transferring dockerfile: 400B                                                                                                                                      0.0s
 => [internal] load .dockerignore                                                                                                                                         1.3s
 => => transferring context: 2B                                                                                                                                           0.0s
 => [internal] load metadata for ghcr.io/cross-rs/powerpc64-unknown-linux-gnu:main                                                                                        0.0s
 => [internal] load build context                                                                                                                                         0.0s
 => => transferring context: 34B                                                                                                                                          0.0s
 => [1/4] FROM ghcr.io/cross-rs/powerpc64-unknown-linux-gnu:main                                                                                                          0.0s
 => CACHED [2/4] COPY powerpc64.sh /pre-build-script                                                                                                                      0.0s
 => CACHED [3/4] RUN chmod +x /pre-build-script                                                                                                                           0.0s
 => CACHED [4/4] RUN ./pre-build-script powerpc64-unknown-linux-gnu                                                                                                       0.0s
 => exporting to image                                                                                                                                                    0.1s
 => => exporting layers                                                                                                                                                   0.0s
 => => writing image sha256:ff03d8382f1cea78a6129f6bb2b8616155da66e30bdf939f3c17376c547d813a                                                                              0.0s
 => => naming to localhost/cross-rs/cross-custom-ssl-test:powerpc64-unknown-linux-gnu-a7e84-pre-build                                                                     0.0s
    Finished dev [unoptimized + debuginfo] target(s) in 0.01s
     Running `/linux-runner powerpc64 target/powerpc64-unknown-linux-gnu/debug/ssl-test`
OpenSSL 3.0.5 5 Jul 2022, platform: debian-ppc64

[Alexhuszagh]

Just note you might also need to move /etc/apt/sources.d to /etc/apt/sources.d.bak and then restore it later as well (in the future, since sometimes the additional repositories in /etc/apt/sources.d/ports.list will have conflicting packages). Also, it may (optionally) be a good idea to remove the foreign pcc64 architecture at the end.

This should be the working solution however.

[Emilgardis]

Just note you might also need to move /etc/apt/sources.d to /etc/apt/sources.d.bak and then restore it later as well (in the future, since sometimes the additional repositories in /etc/apt/sources.d/ports.list will have conflicting packages). Also, it may (optionally) be a good idea to remove the foreign pcc64 architecture at the end.

updated to take this in account

[philipwilk]

Sometimes i get told that the archive repos are like 1.2k days out of date but it seems to work most of the time