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Ian Wienand 448a2602fe Merge remote-tracking branch 'origin/master' into merge-branch Change-Id: I05cc51c699008018d557ed3874d71af26fd60240		2016-11-29 07:43:46 +11:00
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cleanup.d	Move elements & lib relative to diskimage_builder package	2016-11-01 17:27:41 -07:00
extra-data.d	Merge remote-tracking branch 'origin/master' into merge-branch	2016-11-29 07:43:46 +11:00
README.rst	Move elements & lib relative to diskimage_builder package	2016-11-01 17:27:41 -07:00

README.rst

architecture-emulation-binaries

This element enables execution for different architectures

When building an image for an architecture that the host machine can not execute, we need to chroot into the image to execute code, and if the host architecture does not match, we need to emulate the instructions.

This element does the following:

copies the binary file into chroot /usr/bin environment. Binary file is chosen based on host architecture and image architecture the user is trying to build.

If an image we are building for an architecture is not the host architecture, install tools provided by qemu-user-static (which needs to be installed) to allow us to run commands inside the building image.

This is tested on amd64/i386 architecture to build armhf and arm64 ubuntu cloud images.