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471 lines
22 KiB
Markdown
471 lines
22 KiB
Markdown
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---
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title: dockcross
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---
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Cross compiling toolchains in Docker images.
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[![image](https://github.com/dockcross/dockcross/workflows/Dockcross%20CI/badge.svg)](https://github.com/dockcross/dockcross/actions?query=branch%3Amaster)
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# Features
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- Pre-built and configured toolchains for cross compiling.
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- Most images also contain an emulator for the target system.
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- Clean separation of build tools, source code, and build artifacts.
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- Commands in the container are run as the calling user, so that any
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created files have the expected ownership, (i.e. not root).
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- Make variables ([CC]{.title-ref}, [LD]{.title-ref} etc) are set to
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point to the appropriate tools in the container.
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- Recent [CMake](https://cmake.org) and ninja are precompiled.
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- [Conan.io](https://www.conan.io) can be used as a package manager.
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- Toolchain files configured for CMake.
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- Current directory is mounted as the container\'s workdir, `/work`.
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- Works with the [Docker for
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Mac](https://docs.docker.com/docker-for-mac/) and [Docker for
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Windows](https://docs.docker.com/docker-for-windows/).
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- Support using alternative container executor by setting
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[OCI_EXE]{.title-ref} environment variable. By default, it searches
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for [docker]{.title-ref} and
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\[[podman]{.title-ref}\](<https://podman.io/>) executable.
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# Examples
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1. `dockcross make`: Build the *Makefile* in the current directory.
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2. `dockcross cmake -Bbuild -H. -GNinja`: Run CMake with a build
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directory `./build` for a *CMakeLists.txt* file in the current
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directory and generate `ninja` build configuration files.
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3. `dockcross ninja -Cbuild`: Run ninja in the `./build` directory.
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4. `dockcross bash -c '$CC test/C/hello.c -o hello'`: Build the
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*hello.c* file with the compiler identified with the `CC`
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environmental variable in the build environment.
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5. `dockcross bash`: Run an interactive shell in the build environment.
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Note that commands are executed verbatim. If any shell processing for
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environment variable expansion or redirection is required, please use
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[bash -c \'command args\...\']{.title-ref}.
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# Installation
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This image does not need to be run manually. Instead, there is a helper
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script to execute build commands on source code existing on the local
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host filesystem. This script is bundled with the image.
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To install the helper script, run one of the images with no arguments,
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and redirect the output to a file:
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docker run --rm CROSS_COMPILER_IMAGE_NAME > ./dockcross
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chmod +x ./dockcross
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mv ./dockcross ~/bin/
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Where [CROSS_COMPILER_IMAGE_NAME]{.title-ref} is the name of the
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cross-compiler toolchain Docker instance, e.g.
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[dockcross/linux-armv7]{.title-ref}.
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Only 64-bit x86_64 images are provided; a 64-bit x86_64 host system is
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required.
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# Usage
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For the impatient, here\'s how to compile a hello world for armv7:
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cd ~/src/dockcross
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docker run --rm dockcross/linux-armv7 > ./dockcross-linux-armv7
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chmod +x ./dockcross-linux-armv7
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./dockcross-linux-armv7 bash -c '$CC test/C/hello.c -o hello_arm'
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Note how invoking any toolchain command (make, gcc, etc.) is just a
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matter of prepending the **dockcross** script on the commandline:
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./dockcross-linux-armv7 [command] [args...]
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The dockcross script will execute the given command-line inside the
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container, along with all arguments passed after the command. Commands
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that evaluate environmental variables in the image, like
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[\$CC]{.title-ref} above, should be executed in [bash -c].
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The present working directory is mounted within the image, which can be
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used to make source code available in the Docker container.
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# Cross compilers
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### dockcross/base
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/base/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/base/latest)
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Base image for other toolchain images. From Debian Jessie with GCC,
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make, autotools, CMake, Ninja, Git, and Python.
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### dockcross/android-arm
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/android-arm/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/android-arm/latest)
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The Android NDK standalone toolchain for the arm architecture.
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### dockcross/android-arm64
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/android-arm64/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/android-arm64/latest)
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The Android NDK standalone toolchain for the arm64 architecture.
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### dockcross/android-x86
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/android-x86/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/android-x86/latest)
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The Android NDK standalone toolchain for the x86 architecture.
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### dockcross/android-x86_64
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/android-x86_64/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/android-x86_64/latest)
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The Android NDK standalone toolchain for the x86_64 architecture.
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### dockcross/linux-arm64
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/linux-arm64/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/linux-arm64/latest)
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Cross compiler for the 64-bit ARM platform on Linux, also known as
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AArch64.
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### dockcross/linux-arm64-musl
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/linux-arm64-musl/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/linux-arm64-musl/latest)
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Cross compiler for the 64-bit ARM platform on Linux (also known as
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AArch64), using [musl](https://www.musl-libc.org/) as base \"libc\".
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### dockcross/linux-armv5
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/linux-armv5/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/linux-armv5/latest)
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Linux armv5 cross compiler toolchain for legacy devices like the
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Parrot AR Drone.
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### dockcross/linux-armv5-musl
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/linux-armv5-musl/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/linux-armv5-musl/latest)
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Linux armv5 cross compiler toolchain using
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[musl](https://www.musl-libc.org/) as base \"libc\".
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### dockcross/linux-armv6
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/linux-armv6/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/linux-armv6/latest)
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Linux ARMv6 cross compiler toolchain for the Raspberry Pi, etc.
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### dockcross/linux-armv6-musl
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/linux-armv6-musl/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/linux-armv6-musl/latest)
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Linux ARMv6 cross compiler toolchain for the Raspberry Pi, etc,
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using [musl](https://www.musl-libc.org/) as base \"libc\".
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### dockcross/linux-armv7
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/linux-armv7/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/linux-armv7/latest)
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Generic Linux armv7 cross compiler toolchain.
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### dockcross/linux-armv7a
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/linux-armv7a/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/linux-armv7a/latest)
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Toolchain configured for ARMv7-A used in Beaglebone Black single
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board PC with TI SoC AM3358 on board, Cortex-A8.
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### dockcross/linux-armv7l-musl
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/linux-armv7l-musl/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/linux-armv7l-musl/latest)
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Toolchain configured for ARMv7-L, using
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[musl](https://www.musl-libc.org/) as base \"libc\".
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### dockcross/linux-mipsel
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/linux-mipsel/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/linux-mipsel/latest)
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Linux mipsel cross compiler toolchain for little endian MIPS GNU
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systems.
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### dockcross/linux-mips
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/linux-mips/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/linux-mips/latest)
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Linux mips cross compiler toolchain for big endian 32-bit hard float
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MIPS GNU systems.
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### dockcross/linux-s390x
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/linux-s390x/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/linux-s390x/latest)
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Linux s390x cross compiler toolchain for S390X GNU systems.
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### dockcross/linux-ppc64le
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/linux-ppc64le/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/linux-ppc64le/latest)
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Linux PowerPC 64 little endian cross compiler toolchain for the
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POWER8, etc. Important: Due to Issue #430, automatic build of newer
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images has been disabled.
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### dockcross/linux-x64
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/linux-x64/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/linux-x64/latest)
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Linux x86_64 / amd64 compiler. Since the Docker image is natively
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x86_64, this is not actually a cross compiler.
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### dockcross/linux-x64-clang
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/linux-x64-clang/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/linux-x64-clang/latest)
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Linux clang x86_64 / amd64 compiler. Since the Docker image is
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natively x86_64, this is not actually a cross compiler.
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### dockcross/linux-x86
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/linux-x86/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/linux-x86/latest)
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Linux i686 cross compiler.
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### dockcross/manylinux2014-x64
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![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/manylinux2014-x64/latest) ![MicroBadger Layers (tag)](https://img.shields.io/microbadger/layers/dockcross/manylinux2014-x64/latest)
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Docker [manylinux2014](https://github.com/pypa/manylinux) image for
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building Linux x86_64 / amd64 [Python wheel
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packages](http://pythonwheels.com/). It includes Python 3.5, 3.6,
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3.7, 3.8, and 3.9. Also has support for the dockcross script, and it
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has installations of CMake, Ninja, and
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[scikit-build](http://scikit-build.org). For CMake, it sets
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[MANYLINUX2014]{.title-ref} to \"TRUE\" in the toolchain.
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### dockcross/manylinux2014-x86
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: [![manylinux2014-x86-images](https://images.microbadger.com/badges/image/dockcross/manylinux2014-x86.svg)](https://microbadger.com/images/dockcross/manylinux2014-x86)
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Docker [manylinux2014](https://github.com/pypa/manylinux) image for
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building Linux i686 [Python wheel
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packages](http://pythonwheels.com/). It includes Python 3.5, 3.6,
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3.7, 3.8, and 3.9. Also has support for the dockcross script, and it
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has installations of CMake, Ninja, and
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[scikit-build](http://scikit-build.org). For CMake, it sets
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[MANYLINUX2014]{.title-ref} to \"TRUE\" in the toolchain.
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### dockcross/manylinux2014-aarch64
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: [![manylinux2014-aarch64-images](https://images.microbadger.com/badges/image/dockcross/manylinux2014-aarch64.svg)](https://microbadger.com/images/dockcross/manylinux2014-aarch64)
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Docker [manylinux2014](https://github.com/pypa/manylinux) image for
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building Linux aarch64 / arm64 [Python wheel
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packages](http://pythonwheels.com/). It includes Python 3.5, 3.6,
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3.7, 3.8, and 3.9. Also has support for the dockcross script, and it
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has installations of CMake, Ninja, and
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[scikit-build](http://scikit-build.org). For CMake, it sets
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[MANYLINUX2014]{.title-ref} to \"TRUE\" in the toolchain.
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### dockcross/manylinux2010-x64
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: [![manylinux2010-x64-images](https://images.microbadger.com/badges/image/dockcross/manylinux2010-x64.svg)](https://microbadger.com/images/dockcross/manylinux2010-x64)
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Docker [manylinux2010](https://github.com/pypa/manylinux) image for
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building Linux x86_64 / amd64 [Python wheel
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packages](http://pythonwheels.com/). It includes Python 2.7, 3.4,
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3.5, 3.6, 3.7 and 3.8. Also has support for the dockcross script,
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and it has installations of CMake, Ninja, and
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[scikit-build](http://scikit-build.org). For CMake, it sets
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[MANYLINUX2010]{.title-ref} to \"TRUE\" in the toolchain.
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### dockcross/manylinux2010-x86
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: [![manylinux2010-x86-images](https://images.microbadger.com/badges/image/dockcross/manylinux2010-x86.svg)](https://microbadger.com/images/dockcross/manylinux2010-x86)
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Docker [manylinux2010](https://github.com/pypa/manylinux) image for
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building Linux i686 [Python wheel
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packages](http://pythonwheels.com/). It includes Python 2.7, 3.4,
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3.5, 3.6, 3.7 and 3.8. Also has support for the dockcross script,
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and it has installations of CMake, Ninja, and
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[scikit-build](http://scikit-build.org). For CMake, it sets
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[MANYLINUX2010]{.title-ref} to \"TRUE\" in the toolchain.
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### dockcross/manylinux1-x64
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: [![manylinux1-x64-images](https://images.microbadger.com/badges/image/dockcross/manylinux1-x64.svg)](https://microbadger.com/images/dockcross/manylinux1-x64)
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Docker
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[manylinux1](https://github.com/pypa/manylinux/tree/manylinux1)
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image for building Linux x86_64 / amd64 [Python wheel
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packages](http://pythonwheels.com/). It includes Python 2.7, 3.4,
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3.5, 3.6, 3.7 and 3.8. Also has support for the dockcross script,
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and it has installations of CMake, Ninja, and
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[scikit-build](http://scikit-build.org). For CMake, it sets
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[MANYLINUX1]{.title-ref} to \"TRUE\" in the toolchain.
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### dockcross/manylinux1-x86
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: [![manylinux1-x86-images](https://images.microbadger.com/badges/image/dockcross/manylinux1-x86.svg)](https://microbadger.com/images/dockcross/manylinux1-x86)
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Docker
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[manylinux1](https://github.com/pypa/manylinux/tree/manylinux1)
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image for building Linux i686 [Python wheel
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packages](http://pythonwheels.com/). It includes Python 2.7, 3.4,
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3.5, 3.6, 3.7 and 3.8. Also has support for the dockcross script,
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and it has installations of CMake, Ninja, and
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[scikit-build](http://scikit-build.org). For CMake, it sets
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[MANYLINUX1]{.title-ref} to \"TRUE\" in the toolchain.
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### dockcross/web-wasm
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: [![web-wasm-images](https://images.microbadger.com/badges/image/dockcross/web-wasm.svg)](https://microbadger.com/images/dockcross/web-wasm)
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The Emscripten WebAssembly/asm.js/JavaScript cross compiler.
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### dockcross/windows-static-x64
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: [![windows-static-x64-images](https://images.microbadger.com/badges/image/dockcross/windows-static-x64.svg)](https://microbadger.com/images/dockcross/windows-static-x64)
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64-bit Windows cross-compiler based on
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[MXE/MinGW-w64](https://mxe.cc/) with win32 threads and static
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linking.
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### dockcross/windows-static-x64-posix
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: [![windows-static-x64-posix-images](https://images.microbadger.com/badges/image/dockcross/windows-static-x64-posix.svg)](https://microbadger.com/images/dockcross/windows-static-x64-posix)
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64-bit Windows cross-compiler based on
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[MXE/MinGW-w64](https://mxe.cc/) with posix threads and static
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linking.
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### dockcross/windows-static-x86
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: [![windows-static-x86-images](https://images.microbadger.com/badges/image/dockcross/windows-static-x86.svg)](https://microbadger.com/images/dockcross/windows-static-x86)
|
||
|
32-bit Windows cross-compiler based on
|
||
|
[MXE/MinGW-w64](https://mxe.cc/) with win32 threads and static
|
||
|
linking.
|
||
|
|
||
|
### dockcross/windows-shared-x64
|
||
|
|
||
|
: [![windows-shared-x64-images](https://images.microbadger.com/badges/image/dockcross/windows-shared-x64.svg)](https://microbadger.com/images/dockcross/windows-shared-x64)
|
||
|
64-bit Windows cross-compiler based on
|
||
|
[MXE/MinGW-w64](https://mxe.cc/) with win32 threads and dynamic
|
||
|
linking.
|
||
|
|
||
|
### dockcross/windows-shared-x64-posix
|
||
|
|
||
|
: [![windows-shared-x64-posix-images](https://images.microbadger.com/badges/image/dockcross/windows-shared-x64-posix.svg)](https://microbadger.com/images/dockcross/windows-shared-x64-posix)
|
||
|
64-bit Windows cross-compiler based on
|
||
|
[MXE/MinGW-w64](https://mxe.cc/) with posix threads and dynamic
|
||
|
linking.
|
||
|
|
||
|
### dockcross/windows-shared-x86
|
||
|
|
||
|
: [![windows-shared-x86-images](https://images.microbadger.com/badges/image/dockcross/windows-shared-x86.svg)](https://microbadger.com/images/dockcross/windows-shared-x86)
|
||
|
32-bit Windows cross-compiler based on
|
||
|
[MXE/MinGW-w64](https://mxe.cc/) with win32 threads and dynamic
|
||
|
linking.
|
||
|
|
||
|
# Articles
|
||
|
|
||
|
- [dockcross: C++ Write Once, Run
|
||
|
Anywhere](https://nbviewer.jupyter.org/format/slides/github/dockcross/cxx-write-once-run-anywhere/blob/master/dockcross_CXX_Write_Once_Run_Anywhere.ipynb#/)
|
||
|
- [Cross-compiling binaries for multiple architectures with
|
||
|
Docker](https://web.archive.org/web/20170912153531/http://blogs.nopcode.org/brainstorm/2016/07/26/cross-compiling-with-docker)
|
||
|
|
||
|
# Built-in update commands
|
||
|
|
||
|
A special update command can be executed that will update the source
|
||
|
cross-compiler Docker image or the dockcross script itself.
|
||
|
|
||
|
- `dockcross [--] command [args...]`: Forces a command to run inside
|
||
|
the container (in case of a name clash with a built-in command), use
|
||
|
`--` before the command.
|
||
|
- `dockcross update-image`: Fetch the latest version of the docker
|
||
|
image.
|
||
|
- `dockcross update-script`: Update the installed dockcross script
|
||
|
with the one bundled in the image.
|
||
|
- `dockcross update`: Update both the docker image, and the dockcross
|
||
|
script.
|
||
|
|
||
|
# Download all images
|
||
|
|
||
|
To easily download all images, the convenience target `display_images`
|
||
|
could be used:
|
||
|
|
||
|
curl https://raw.githubusercontent.com/dockcross/dockcross/master/Makefile -o dockcross-Makefile
|
||
|
for image in $(make -f dockcross-Makefile display_images); do
|
||
|
echo "Pulling dockcross/$image"
|
||
|
docker pull dockcross/$image
|
||
|
done
|
||
|
|
||
|
# Install all dockcross scripts
|
||
|
|
||
|
To automatically install in `~/bin` the dockcross scripts for each
|
||
|
images already downloaded, the convenience target `display_images` could
|
||
|
be used:
|
||
|
|
||
|
curl https://raw.githubusercontent.com/dockcross/dockcross/master/Makefile -o dockcross-Makefile
|
||
|
for image in $(make -f dockcross-Makefile display_images); do
|
||
|
if [[ $(docker images -q dockcross/$image) == "" ]]; then
|
||
|
echo "~/bin/dockcross-$image skipping: image not found locally"
|
||
|
continue
|
||
|
fi
|
||
|
echo "~/bin/dockcross-$image ok"
|
||
|
docker run dockcross/$image > ~/bin/dockcross-$image && \
|
||
|
chmod u+x ~/bin/dockcross-$image
|
||
|
done
|
||
|
|
||
|
# Dockcross configuration
|
||
|
|
||
|
The following environmental variables and command-line options are used.
|
||
|
In all cases, the command-line option overrides the environment
|
||
|
variable.
|
||
|
|
||
|
## DOCKCROSS_CONFIG / \--config\|-c \<path-to-config-file>
|
||
|
|
||
|
This file is sourced, if it exists, before executing the rest of the
|
||
|
dockcross script.
|
||
|
|
||
|
Default: `~/.dockcross`
|
||
|
|
||
|
## DOCKCROSS_IMAGE / \--image\|-i \<docker-image-name>
|
||
|
|
||
|
The Docker cross-compiler image to run.
|
||
|
|
||
|
Default: Image with which the script was created.
|
||
|
|
||
|
## DOCKCROSS_ARGS / \--args\|-a \<docker-run-args>
|
||
|
|
||
|
Extra arguments to pass to the `docker run` command. Quote the entire
|
||
|
set of args if they contain spaces.
|
||
|
|
||
|
# Per-project dockcross configuration
|
||
|
|
||
|
If a shell script named `.dockcross` is found in the current directory
|
||
|
where the dockcross script is started, it is executed before the
|
||
|
dockcross script `command` argument. The shell script is expected to
|
||
|
have a shebang like `#!/usr/bin/env bash`.
|
||
|
|
||
|
For example, commands like
|
||
|
`git config --global advice.detachedHead false` can be added to this
|
||
|
script.
|
||
|
|
||
|
# How to extend Dockcross images
|
||
|
|
||
|
In order to extend Dockcross images with your own commands, one must:
|
||
|
|
||
|
1. Use `FROM dockcross/<name_of_image>`.
|
||
|
2. Set `DEFAULT_DOCKCROSS_IMAGE` to a name of the tag you\'re planning
|
||
|
to use for the image. This tag must then be used during the build
|
||
|
phase, unless you mean to pass the resulting helper script the
|
||
|
`DOCKCROSS_IMAGE` argument.
|
||
|
|
||
|
An example Dockerfile would be:
|
||
|
|
||
|
FROM dockcross/linux-armv7
|
||
|
|
||
|
ENV DEFAULT_DOCKCROSS_IMAGE my_cool_image
|
||
|
RUN apt-get install nano
|
||
|
|
||
|
And then in the shell:
|
||
|
|
||
|
docker build -t my_cool_image . # Builds the dockcross image.
|
||
|
docker run my_cool_image > linux-armv7 # Creates a helper script named linux-armv7.
|
||
|
chmod +x linux-armv7 # Gives the script execution permission.
|
||
|
./linux-armv7 bash # Runs the helper script with the argument "bash", which starts an interactive container using your extended image.
|
||
|
|
||
|
# What is the difference between [dockcross]{.title-ref} and [dockbuild]{.title-ref} ?
|
||
|
|
||
|
The key difference is that
|
||
|
[dockbuild](https://github.com/dockbuild/dockbuild#readme) images do
|
||
|
**NOT** provide a [toolchain
|
||
|
file](https://cmake.org/cmake/help/latest/manual/cmake-toolchains.7.html)
|
||
|
but they use the same method to conveniently isolate the build
|
||
|
environment as
|
||
|
[dockcross](https://github.com/dockcross/dockcross#readme).
|
||
|
|
||
|
[dockbuild]{.title-ref} is used to build binaries for Linux x86_64 /
|
||
|
amd64 that will work across most Linux distributions.
|
||
|
[dockbuild]{.title-ref} performs a native Linux build where the host
|
||
|
build system is a Linux x86_64 / amd64 Docker image (so that it can be
|
||
|
used for building binaries on any system which can run Docker images)
|
||
|
and the target runtime system is Linux x86_x64 / amd64.
|
||
|
|
||
|
[dockcross]{.title-ref} is used to build binaries for many different
|
||
|
platforms. [dockcross]{.title-ref} performs a cross compilation where
|
||
|
the host build system is a Linux x86_64 / amd64 Docker image (so that it
|
||
|
can be used for building binaries on any system which can run Docker
|
||
|
images) and the target runtime system varies.
|
||
|
|
||
|
\-\--
|
||
|
|
||
|
Credits go to
|
||
|
[sdt/docker-raspberry-pi-cross-compiler](https://github.com/sdt/docker-raspberry-pi-cross-compiler),
|
||
|
who invented the base of the **dockcross** script.
|