Add support for compiling the provider on aarch64

Signed-off-by: Tomás González <[email protected]>

parsec-openssl-sys2/build.rs

@@ -32,9 +32,12 @@ fn main() -> std::io::Result<()> {
         .size_t_is_usize(true);
 
     // Build the bindings
-    let openssl_bindings = openssl_builder
-        .generate()
-        .map_err(|_| Error::new(ErrorKind::Other, "Unable to generate bindings to openssl"))?;
+    let openssl_bindings = openssl_builder.generate().map_err(|e| {
+        Error::new(
+            ErrorKind::Other,
+            format!("Unable to generate bindings to openssl: {}", e),
+        )
+    })?;
 
     let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
     openssl_bindings.write_to_file(out_path.join("openssl_bindings.rs"))?;

tests/cross-compile.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+# Copyright 2024 Contributors to the Parsec project.
+# SPDX-License-Identifier: Apache-2.0
+
+set -xeuf -o pipefail
+
+# Allow the `pkg-config` crate to cross-compile
+export PKG_CONFIG_ALLOW_CROSS=1
+# Make the `pkg-config` crate use our wrapper
+export PKG_CONFIG=/tmp/parsec-openssl-provider/tests/pkg-config
+
+export SYSROOT=/tmp/aarch64-linux-gnu
+export RUSTFLAGS="-lcrypto -L/tmp/aarch64-linux-gnu/lib"
+cd /tmp/parsec-openssl-provider
+cargo build --target aarch64-unknown-linux-gnu \
+	--config 'target.aarch64-unknown-linux-gnu.linker="aarch64-linux-gnu-gcc"'
+
+cd parsec-openssl-provider-shared
+cargo build --target aarch64-unknown-linux-gnu \
+	--config 'target.aarch64-unknown-linux-gnu.linker="aarch64-linux-gnu-gcc"'

tests/docker_image/cross-compile-openssl.sh

@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+
+# Copyright 2024 Contributors to the Parsec project.
+# SPDX-License-Identifier: Apache-2.0
+
+# Cross compile the OpenSSL library for a given target
+
+set -xeuf -o pipefail
+
+rustup target add aarch64-unknown-linux-gnu
+
+OPENSSL_VERSION="openssl-3.0.2"
+git clone https://github.com/openssl/openssl.git --branch $OPENSSL_VERSION
+
+# Prepare directory for cross-compiled OpenSSL files
+mkdir -p /tmp/$1
+export INSTALL_DIR=/tmp/$1
+
+pushd /tmp/openssl
+# Compile and copy files over
+./Configure $2 shared --prefix=$INSTALL_DIR --openssldir=$INSTALL_DIR/openssl --cross-compile-prefix=$1-
+make clean
+make depend
+make -j$(nproc)
+make install
+popd
+
+unset INSTALL_DIR
+
+pushd /usr/include/openssl
+ln -s /tmp/$1/include/openssl/opensslconf.h .
+ln -s /tmp/$1/include/openssl/configuration.h .
+popd

tests/docker_image/parsec-service-test-cross-compile.Dockerfile

@@ -0,0 +1,45 @@
+# Copyright 2024 Contributors to the Parsec project.
+# SPDX-License-Identifier: Apache-2.0
+FROM ubuntu:22.04
+
+RUN apt update && apt-get -y upgrade
+RUN apt install -y autoconf-archive libcmocka0 libcmocka-dev procps
+RUN apt install -y iproute2 build-essential git pkg-config gcc libtool automake libssl-dev uthash-dev doxygen libjson-c-dev
+RUN apt install -y --fix-missing wget python3 cmake clang
+RUN apt install -y libini-config-dev curl libgcc1
+RUN apt install -y python3-distutils libclang-11-dev protobuf-compiler python3-pip
+RUN apt install -y libgcrypt20-dev uuid-dev
+RUN apt install -y git gcc
+
+
+# Setup git config
+RUN git config --global user.email "[email protected]"
+RUN git config --global user.name "Parsec Team"
+
+WORKDIR /tmp
+
+# Install Rust toolchain for all users
+# This way of installing allows all users to call the same binaries, but non-root
+# users cannot modify the toolchains or install new ones.
+# See: https://github.com/rust-lang/rustup/issues/1085
+ENV RUSTUP_HOME /opt/rust
+ENV CARGO_HOME /opt/rust
+RUN curl https://sh.rustup.rs -sSf | sh -s -- -y --no-modify-path
+ENV PATH="/root/.cargo/bin:/opt/rust/bin:${PATH}"
+
+# Install aarch64-none-linux-gnu cross compilation toolchain
+RUN wget https://developer.arm.com/-/media/Files/downloads/gnu-a/9.2-2019.12/binrel/gcc-arm-9.2-2019.12-x86_64-aarch64-none-linux-gnu.tar.xz?revision=61c3be5d-5175-4db6-9030-b565aae9f766 -O aarch64-gcc.tar.xz
+RUN tar --strip-components=1 -C /usr/ -xvf aarch64-gcc.tar.xz
+RUN rm aarch64-gcc.tar.xz
+
+# Install cross-compilers
+RUN apt install -y gcc-multilib
+RUN apt install -y gcc-arm-linux-gnueabihf
+RUN apt install -y gcc-aarch64-linux-gnu
+
+WORKDIR /tmp
+
+# Copy OpenSSL cross-compilation script
+COPY cross-compile-openssl.sh /tmp/
+# Cross-compile OpenSSL for Linux on aarch64
+RUN ./cross-compile-openssl.sh aarch64-linux-gnu linux-generic64

tests/pkg-config

@@ -0,0 +1,6 @@
+#!/bin/sh
+
+unset PKG_CONFIG_PATH
+export PKG_CONFIG_LIBDIR=${SYSROOT}/lib/pkgconfig:${SYSROOT}/usr/lib/pkgconfig:${SYSROOT}/usr/share/pkgconfig:${SYSROOT}/usr/local/lib/pkgconfig
+
+exec pkg-config "$@"