On Sat, Dec 5, 2020 at 2:35 PM Mihai Moldovan ionic@ionic.de wrote:
[Resent this message to the list without aa GPG signature, since my signature blows the message up past the 50 KB mark... meh.]
- On 12/5/20 8:15 PM, Simon Matter wrote:
[...] We are thinking about adding ARM64 based devices to our systems.
As we are using CentOS almost everywhere and have quite a number of inhouse RPM packages in our company repository, we'd like to enhance it and add ARM64 alias aarch64 to it.
What I'm still wondering is how to run the build environment for the new arch?
How does the CentOS project do it, run ARM64 hardware or using emulation? Or to ask differently, is it an option to run the build system emulated with QEMU?
I cannot speak for the CentOS project, but I'm doing something along those lines, albeit in a Debian-context with sbuild chroots (which are static, compared to mock's chroots, so getting this stuff working with mock could be painful).
Essentially, you can leverage the binfmt_misc Linux kernel feature inn tandem with qemu-static-user binaries. The Fedora package name for that is qemu-user-static, I believe it's the same for CentOS.
I'd use "mock" on an arm64 architecture host. If I lack spare hardware, I'd grab an AWS account and run mock in a CentOS 8 AMI. The mock provided for Amazon Linux is, I'm afraid, a bit out of date and tricky to manage due to "createrepo" versus "createrepo_c" dependencies.