Joe McDonnell created IMPALA-10263:
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Summary: Native toolchain support for cross compiling to produce
ARM binaries
Key: IMPALA-10263
URL: https://issues.apache.org/jira/browse/IMPALA-10263
Project: IMPALA
Issue Type: Improvement
Components: Infrastructure
Affects Versions: Impala 4.0
Reporter: Joe McDonnell
With support for ARM added to upstream Impala, it would be useful to be able to
build the ARM native toolchain from an x86 machine. This would allow it to be
built and uploaded to s3 using the same infrastructure that currently builds
the x86 binaries. Having the ARM binaries in s3 opens up possibilities to
incorporate an ARM build into GVO.
QEMU has the ability to emulate ARM on an x86 machine, and it is surprisingly
simple to get an ARM docker container running on x86. This article provides
some depth:
[https://ownyourbits.com/2018/06/27/running-and-building-arm-docker-containers-in-x86/]
The basic story is that the steps are:
# Install qemu-user/qemu-user-static (which installs appropriate hooks in the
kernel)
# Make qemu-aarch64-static available in the context for building the docker
container
# In the Dockerfile, copy qemu-aarch64-static into /usr/bin
For example, here is the start of the ubuntu1804 Dockerfile:
{noformat}
FROM arm64v8/ubuntu:18.04
COPY qemu-aarch64-static /usr/bin/qemu-aarch64-static
# The rest of the dockerfile{noformat}
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