[Qemu-devel] [PATCH v2 5/7] new debian-multiarch-cross.docker: a cross-compiling docker guest

[Alex Bennée]

This provides a basic Debian install with access to the emdebian cross
compilers for armhf, arm64, mipsel and ppc64el. On its own it provides
the basic cross build essentials for building any of those
architectures. More complex cross-compilations would need to install
library dependencies on top of this image.

An example use:

  docker run --rm -it \
    -v /home/alex/lsrc/qemu/qemu.git/:/home/alex/lsrc/qemu/qemu.git/ \
    --user=alex:alex \
    -w /home/alex/lsrc/qemu/qemu.git/arm-linux-user/tests \
    -e CROSS_CC="arm-linux-gnueabihf-gcc" \
    debian:cross make -f ../../tests/tcg/arm/Makefile

Signed-off-by: Alex Bennée <address@hidden>

---
v2
  - add clang (keep shippable happy)
  - rm adduser code (done direct now)
  - add aptitude (useful for debugging package clashes)
---
 .../dockerfiles/debian-multiarch-cross.docker      | 45 ++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 tests/docker/dockerfiles/debian-multiarch-cross.docker

diff --git a/tests/docker/dockerfiles/debian-multiarch-cross.docker 
b/tests/docker/dockerfiles/debian-multiarch-cross.docker
new file mode 100644
index 0000000000..749fdf07e1
--- /dev/null
+++ b/tests/docker/dockerfiles/debian-multiarch-cross.docker
@@ -0,0 +1,45 @@
+#
+# Docker multiarch cross-compiler target
+#
+# This docker target is builds on Debian and Emdebian's cross compiler targets
+# to build distro with a selection of cross compilers for building test 
binaries.
+#
+# This does not include the build dependancies for QEMU as there are
+# so many there are unresolvable clashes.
+#
+FROM debian:stable-slim
+
+# Setup some basic tools we need
+RUN apt update
+RUN apt install -yy curl aptitude
+
+# Setup Emdebian
+RUN echo "deb http://emdebian.org/tools/debian/ jessie main" >> 
/etc/apt/sources.list
+RUN curl http://emdebian.org/tools/debian/emdebian-toolchain-archive.key | 
apt-key add -
+
+# Duplicate deb line as deb-src
+RUN cat /etc/apt/sources.list | sed "s/deb/deb-src/" >> /etc/apt/sources.list
+
+# Add the foriegn architectures we want
+RUN dpkg --add-architecture armhf
+RUN dpkg --add-architecture arm64
+RUN dpkg --add-architecture mipsel
+RUN dpkg --add-architecture ppc64el
+
+#FIXME: Currently these cause clashes due to multi-arch being an ongoig process
+#RUN dpkg --add-architecture mips
+#RUN dpkg --add-architecture powerpc
+
+# Final update
+RUN apt update
+
+# Install the crossbuild essential packages
+# FIXME: crossbuild-essential-powerpc has a clash with '/lib/ld.so.1'
+RUN apt install -yy clang crossbuild-essential-arm64 
crossbuild-essential-armhf crossbuild-essential-mipsel 
crossbuild-essential-ppc64el
+
+# Before you can actually build something you need to install its build 
dependancies.
+# This is best done in a child container as architecture specific -dev 
packages have a habit of clashing with
+# each other because not everything is fully complient with the multiarch 
specififcation.
+#
+# To install the QEMU build dependacnies you need to run:
+# RUN apt-get build-dep -yy -a armhf qemu
-- 
2.11.0