Wednesday, 2023-06-07

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dodoradio[m]Hi! I'm trying to get yocto to build an image for a device that has a 64 bit kernel and a 32 bit userspace. I11:38
dodoradio[m]Unfortunately, it's not an option to use just an entirely 32 or 64 bit system, as the kernel only builds with aarch64 and I depend on some precompiled android libraries which are arm.11:42
dodoradio[m]I have already tried to use multilib for this, but this doesn't seem to do exactly what I want. AsteroidOS has a packaging server which hosts `armv7vehf-neon` packages, but those aren't compatible with the mulitilib based image because it wants some mulitilib specific packages, even though they are also `armv7vehf-neon`.11:42
dodoradio[m]I have heard that there is a way to build a kernel and a rootfs using multiconfig, but I haven't found any documentation on this. Could someone please help me with this?11:43
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CroftonDo we still care about prelink?14:25
Croftonnope, gone in kirkstone14:26
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frayya, we killed it off when glibc removed support in the loader14:27
LetoThe2ndfray: so evil!14:48
dodoradio[m]Crofton: sorry, is that reply to me or someone else?14:49
Croftonmore a general question14:49
CroftonI don't have any quick answer to the multiconfig question14:50
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dodoradio[m]ok, thank you. I'll stick around if case anyone can help.14:50
frayLetoThe2nd: I still think removal of prelink was short sighted (on glibcs part), but lack of maintainer of the prelink utility doomed it.  This tinfoil hat security belief that load time address randomization is a magic fix is crap.. but it's the ultimate excusse to ignore this type of software15:01
fray(on a 32-bit platform there are only something like 6-10 addresses that can be used for loading libraries with randomization on.  It's trivial to code for that... 64-bit it moves to something like 20.. the address ranges used are much smaller then people think)15:02
LetoThe2ndfray: its the same old same old: "not my use case, it can go to hell"15:02
frayyup..15:03
fraylook, not my usecase anymore as well, so I never got the time (or knowledge) to keep maintaining prelink either..15:04
LetoThe2ndfray: completely understood and sympathetic for that.15:04
fraybut there was a fundamental bug in the symbol searching in glibc.  When I brought it up (since prelink WAS doing it to spec, glibc was not).  I got massive pushback that glibc couldn't possibly be broken.. :P15:04
fraylol the fix for the glibc loader bug was to remove prelink support.. since the bug only happened when prelinked binaries were exceuted.. :P15:06
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paulgI wish we'd do the same for lib32 bi-arch support.  Push it off a cliff.15:37
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khemyes multilibs are complex20:21
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