Anthony J. Martinez

CrossBuild Initial Release

CrossBuild Provides a Dockerfile to build a container that supports cross compilation for ARMv7 and i686 targets from x86-64 hosts.

This project was created out of a need to have a single-shot process for building a few Rust projects with stripped binaries featuring static C-runtimes for:

While cross exists, and is far more full featured, the project lags behind in updating the base OS, GCC, and QEMU versions used (as of this writing).

An example exists that handles my specific use case for one project, and might serve as inspiration for modifications to suit more complicated needs.


Using podman since I do not have docker itself installed:

# Assuming you have cloned this repository and are in the repo
$ cd docker
$ podman build -t crossbuild:dev -f ./Dockerfile


Again using podman and assuming you're in the repository:

$ podman run --rm \
	-e REPO_URL="" \
	-e BIN_NAME="connchk" -v ./example/:/opt/build \
	crossbuild:dev /opt/build/

# ...

$ tree example
├── armv7-unknown-linux-gnueabihf_connchk
├── i686-unknown-linux-gnu_connchk

$ file example/*_connchk
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
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