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Apache License
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@ -0,0 +1,23 @@
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Permission is hereby granted, free of charge, to any
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
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@ -0,0 +1,62 @@
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# Cross Build
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Provides a Dockerfile to build a container that supports cross compilation for ARMv7 and i686 targets
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from x86-64 hosts.
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This project was created out of a need to have a single-shot process for building a few Rust projects
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with stripped binaries featuring static C-runtimes for:
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- `armv7-unknown-linux-gnueabihf`
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- `i686-unknown-linux-gnu`
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While [cross](https://github.com/rust-embedded/cross) exists, and is far more full featured, the
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project lags behind in updating the base OS, GCC, and QEMU versions used (as of this writing).
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An [example](/example/rust-job.sh) exists that handles my specific use case for one project, and might
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serve as inspiration for modifications to suit more complicated needs.
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### Building
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Using `podman` since I do not have `docker` itself installed (nor will I, ever):
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```
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# Assuming you have cloned this repository and are in the repo
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$ cd docker
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$ podman build -t crossbuild:latest -f ./Dockerfile
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```
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### Use
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Again using `podman` and assuming you're in the repository:
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```
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$ podman run --rm \
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-e REPO_URL="https://git.staart.one/ajmartinez/connchk.git" \
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-e BIN_NAME="connchk" -v ./example/:/opt/build \
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crossbuild:dev /opt/build/rust-job.sh
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# ...
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$ tree example
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example/
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├── armv7-unknown-linux-gnueabihf_connchk
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├── i686-unknown-linux-gnu_connchk
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└── rust-job.sh
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$ file example/*_connchk
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example/armv7-unknown-linux-gnueabihf_connchk: ELF 32-bit LSB executable, ARM, EABI5 version 1 (GNU/Linux), statically linked, BuildID[sha1]=00811fa9637b6abf243fb707a8970b0cea43ba4f, for GNU/Linux 3.2.0, stripped
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example/i686-unknown-linux-gnu_connchk: ELF 32-bit LSB executable, Intel 80386, version 1 (GNU/Linux), statically linked, BuildID[sha1]=6e1d92bb01aed5b0adb673b1dfbe5fb28cf5da18, for GNU/Linux 3.2.0, stripped
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```
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### License
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Licensed under either of
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* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
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* MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
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at your option.
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### Contribution
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||||||
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||||||
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Unless you explicitly state otherwise, any contribution intentionally submitted
|
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|
for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any
|
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|
additional terms or conditions.
|
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@ -0,0 +1,18 @@
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# syntax=docker/dockerfile:1
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FROM ubuntu:20.04
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ARG DEBIAN_FRONTEND=noninteractive
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ARG TZ=UTC
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RUN apt-get update && apt-get --yes install \
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crossbuild-essential-armhf \
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crossbuild-essential-i386 \
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binutils-multiarch \
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libc6-dev-i386-amd64-cross \
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curl \
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git && apt clean all && \
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echo "umask 0022" > /etc/profile.d/01-fix-umask.sh
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WORKDIR /opt/build
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CMD ["/bin/bash"]
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@ -0,0 +1,51 @@
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#!/bin/bash
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set -e
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ARMV7="armv7-unknown-linux-gnueabihf"
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I686="i686-unknown-linux-gnu"
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TARGETS=( "${ARMV7}" "${I686}" )
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if [ -z ${REPO_URL} ]; then
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echo "Missing REPO_URL, exiting" >&2
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exit 1
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fi
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if [ -z ${BIN_NAME} ]; then
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echo "Missing BIN_NAME, exiting" >&2
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exit 1
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fi
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curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
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source $HOME/.cargo/env
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rustup target add "${ARMV7}"
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rustup target add "${I686}"
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cat >>$HOME/.cargo/config <<EOF
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[build]
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rustflags = ["-C", "target-feature=+crt-static"]
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[target."${ARMV7}"]
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linker = "arm-linux-gnueabihf-gcc"
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[target."${I686}"]
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linker = "i686-linux-gnu-gcc"
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EOF
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||||||
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||||||
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git clone ${REPO_URL} output
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cd output
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||||||
|
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||||||
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for target in "${TARGETS[@]}"; do
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||||||
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cargo build --release --target "${target}"
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||||||
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BIN_PATH="target/${target}/release/${BIN_NAME}"
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||||||
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strip "${BIN_PATH}"
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||||||
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mv "${BIN_PATH}" "/opt/build/${target}_${BIN_NAME}"
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||||||
|
done
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||||||
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||||||
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cd /opt/build
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||||||
|
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||||||
|
rm -rf output
|
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