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<Guest42>
hello! I am new to Yocto and I would like some help setting up a real-time preempt_rt kernel for beaglebone black through Yocto.
<Guest42>
I have attempted a variety of things but so far nothing has been working
<Guest42>
If possible, could someone give me a step by step tutorial to accomplish this?
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<Guest42>
can anyone help me here? or should I try to send an email to the mailing list?
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<ykrons>
Hello
<Guest42>
Hello
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<ykrons>
How should the runtime dependencies be specified in multilib world? For example, if I build lib32-mypackage in a 64bit image and it depends for build on libcurl, I will add DEPENDS += "curl" and it will add lib32-curl to sysroot, that's fine.
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<ykrons>
But for runtime dependencies, if mypackage depends on curl, if I add RDEPENDS_{PN} += "curl", I think that it will add lib32-curl to my image whereas the dependency can be resolved by the 64bit curl package. So should runtime dependencies be specified out of the recipe ?
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<xcm>
hello. i added dnsmasq to my image and now it fails with "ERROR: QA Issue: /usr/bin/dnsmasq-resolvconf-helper contained in package dnsmasq requires /bin/bash, but no providers found in RDEPENDS:dnsmasq? [file-rdeps]". i don't seem to even need this file because it says it's inteded for systemd-only anyway. what can i do?
<xcm>
fwiw my build does (not on purpose) pull bash in
<xcm>
ah, `RDEPENDS:${PN} += "bash"` in the .bbappend fixed it.
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<DarkKnight>
Hi everyone. I add CFLAGS_my_module.o := -DDEBUG to the makefile of an out of tree kernel module. But somehow bitbake does not apply additional cflags. What am I doing wrong?
<rburton>
the makefile is probably overriding it with the variables used
<rburton>
not really a yocto thing, that's just how make works
<DarkKnight>
rburton Thanks! that makes sense. Is there any way that I can force it in recipe to include the additional flag?
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<wyre>
how is BB_NUMBER_THREADS and PARALLEL_MAKE determined when they aren't set in conf/local.conf?
<mcfrisk>
wyre: thread count of the build machine is checked. note that amount of RAM is not and building non-trivial can result in oom killer breaking the build.
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<JaMa>
mcfrisk: not only the build, but it will also sometimes kill your networking and you might fail to ssh after OOMK runs (happened to me few times - always only when I'm traveling and need to access home builder only remotely)
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<mcfrisk>
JaMa: ouch, that's bad. I've only seen compiler related processes getting killed when doing bitbake builds in the last 8 years. I've been very lucky it seems.
<mcfrisk>
or my CPU thread count relation to availabe RAM has been "good". Less than rwo Gb of RAM
<mcfrisk>
less than two Gb of RAM per thread would have been really bad, but I've been over that
<mcfrisk>
I used a 128G and 42 thread machine for a long time, 64 seems to be too much. Are BB_PRESSURE_MAX_CPU and BB_PRESSURE_MAX_MEMORY ready to replace thread counts already?
<JaMa>
mcfrisk: I've set BB_PRESSURE_* some time ago and it helps a bit, but doesn't prevent OOMK when I get crazy and trigger 2nd build in parallel (usually thinking that I have valid sstate for all the big recipes and just needing to refresh the image a bit - and ending rebuilding chromium or something anyway)
<JaMa>
or when I impatient and trigger 2nd build after 1st _almost_ finished building chromium - in this case BB_PRESSURE makes it a bit worse, because chromium build in 1st build slows down significantly and instead of finishing before 2nd one starts it ends with both builds crawling at the same time
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<fray>
I ran into an issue. Updating from Honister to Langdale. I am using 'crda' for wifi stuff, but something changed and now packagegroup-base-wifi requires wireless-regdb-static (all from poky/oe-core), but this has a conflicts with crda
<fray>
is crda no longer used? Or is there some other way to tell the system to NOT use packagegroup-base-wifi, but use crda instead?
<fray>
If it's no longer needed that is fine, just the descriptions of the contents don't make that obvious.. the commit you pointed to seems to make it that its no longer needed
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<vvn>
many systemd services explode with using read-only-rootfs. Is one supposed to edit all such services to set a different state directory or disable writes if possible or am I missing a (systemd) feature?
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<Ebeneezer_Smooge>
vvn, it depends on the service. most of the ones I know of explode when /var is read-only which is pretty much meant to be a 'no-no'. using an overlay os is the usual solution
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<Ebeneezer_Smooge>
at least in Fedora... which I thought I was answering in versus yocto.
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<vvn>
Ebeneezer_Smooge: what annoys me with an overlayfs for / is that it requires a custom initrd script to do so if I'm not mistaken
<Ebeneezer_Smooge>
yeah sorry I haven't done much of this outside of seeing what is 'read-write' on an ostree system
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<mischief>
we use a readonly /, but the details of how we got there are forgotten now :-)
<kergoth>
Overlay or bind mounts for specific paths, there are options
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<mischief>
in our system we just never write to /, and only have rw mounts for /var and some other stuff
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<vvn>
that's where I'm heading too
<vvn>
overlay for /etc and /var or eventually the whole / if I can make it "pure-system" (i.e. fstab entries only and no custom scripts in the initrd)
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<mischief>
we have ro /etc to.. and moved most interesting stuff into /var or /run
<khem>
with systemd you will need /etc writable too for best results
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<Salamandar>
Even without systemd, ro /etc prevents setting the hostname, ip address network config, etc
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<mischief>
hm, we don't seem to have those sorts of problems with ro /etc. it has been possible for years, at least with tricks, to use systemd with ro / and /etc
<Salamandar>
So how does hostnamectl work on ro /etc ?
<Salamandar>
also networkmanager stores its config in /etc, although i would not be surprised if you can change that ^^
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<mischief>
we don't use hostnamectl, nor networkmanager
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<moto-timo>
yocti, make me a sandwich
<yocti>
moto-timo: Error: "make" is not a valid command.
<paulg>
yocti, tell moto-timo to go make his own damn sammich.
<yocti>
paulg: The operation succeeded.
<moto-timo>
yocti, tell paulg the sammich was delish
<yocti>
moto-timo: The operation succeeded.
<paulg>
Fun with bots!
<paulg>
Apparently they don't have spell check either.
<paulg>
we'll have to get halstead on that.
<halstead>
paulg: what needs to be changed?
<paulg>
halstead, we are just joking around on how yocti didn't complain about me typing "sammich"