Need help with getting a package to build reproducibly on arm*

Michael Biebl biebl at debian.org
Fri Jan 8 11:52:32 GMT 2021


Am 07.01.21 um 22:39 schrieb Michael Hudson-Doyle:

> I'm hardly an expert in such things but it looks to me as if gcc is
> ordering things differently between the two builds:
> 
> https://tests.reproducible-builds.org/debian/dbd/unstable/arm64/systemd_247.2-4.diffoscope.html#systemd-tests_---.---_arm--.deb---data.tar.xz---data.tar---.-usr-lib-systemd-tests-manual-test-udev---objdump---line-numbers---disassemble---demangle---reloc---no-show-raw-insn---section-.text---
> 
> and all the other differences follow on from that. Unless systemd is using
> particularly strange compiler options,

cflags:
https://salsa.debian.org/systemd-team/systemd/-/blob/debian/master/meson.build#L343

linkflags:
https://salsa.debian.org/systemd-team/systemd/-/blob/debian/master/meson.build#L401

We do build with LTO enabled.


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