Lähettäjä: Khem Raj <[email protected]> Lähetetty: torstai 25. maaliskuuta 2021 20.29 Vastaanottaja: Huuki, Tuomas <[email protected]>; [email protected] Aihe: Re: [yocto] libcansocket: Weird issue with pkgsplit
[EXTERNAL SENDER] - If you believe this may be PHISHING, please click the "Report Phishing" button above. On 3/25/21 1:06 AM, Tuomas Huuki wrote: > Hello all, > I have an interesting situation with libcansocket and bitbake that I > cannot wrap my head around. For some reason, the packages are being > split up somewhat strangely and I cannot figure out why. > First of all, the recipe used is: > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgith > ub.com%2Fopenembedded%2Fmeta-openembedded%2Fblob%2F9a0de2779b9b31f134f > fe19388b5b9b37bb6450e%2Fmeta-oe%2Frecipes-extended%2Fsocketcan%2Flibso > cketcan_0.0.11.bb&data=04%7C01%7Ctuomas.huuki%40crosscontrol.com%7 > C8496799aa67e4cb3bac908d8efbbdd60%7C8b3fa9f59a3d4339a66aa9f7e39c9126%7 > C0%7C0%7C637522937456377594%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMD > AiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=hLiu > fQtPTmCJvs1FfSemKVHnMmi5zBUKOHW%2BXgfMAyw%3D&reserved=0 > <https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit > hub.com%2Fopenembedded%2Fmeta-openembedded%2Fblob%2F9a0de2779b9b31f134 > ffe19388b5b9b37bb6450e%2Fmeta-oe%2Frecipes-extended%2Fsocketcan%2Flibs > ocketcan_0.0.11.bb&data=04%7C01%7Ctuomas.huuki%40crosscontrol.com% > 7C8496799aa67e4cb3bac908d8efbbdd60%7C8b3fa9f59a3d4339a66aa9f7e39c9126% > 7C0%7C0%7C637522937456387589%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwM > DAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=mp6 > vRRNyAG%2Bf2KnsAxxIWWMgjrmp%2BZSJWgU2rCVxGP4%3D&reserved=0> > So no strange things there. > > Additionally, looking at the built items: > > ../build/tmp/work/aarch64-poky-linux/libsocketcan/0.0.11-r0/image/usr/ > lib$ ls -lah libsocketcan* lrwxrwxrwx 1 tuomas tuomas 21 maali 18 > 10:38 libsocketcan.so -> libsocketcan.so.2.3.0 lrwxrwxrwx 1 tuomas > tuomas 21 maali 18 10:38 libsocketcan.so.2 -> libsocketcan.so.2.3.0 > -rwxr-xr-x 1 tuomas tuomas 58K maali 18 10:38 libsocketcan.so.2.3.0 > > All looks good at this point. Now, when I deploy the image, the first > link is missing. > When I look at pkgdata I can see that the link ends up in libsocketcan-dev: > > $ oe-pkgdata-util list-pkg-files libsocketcan > libsocketcan: > /usr/lib/libsocketcan.so.2 > /usr/lib/libsocketcan.so.2.3.0 > $ oe-pkgdata-util list-pkg-files libsocketcan-dev > libsocketcan-dev: > /usr/include/can_netlink.h > /usr/include/libsocketcan.h > /usr/lib/libsocketcan.so > /usr/lib/pkgconfig/libsocketcan.pc > > Its following usual soname naming conventions [1] for versioned shared libs > where .so is a symlink which is used when something is linking to it during > build time. thats why its in -dev package, if you want to use it at runtime > then linker will add proper versioned .so into DT_NEEDED sections of > dependent package which will be libsocketcan.so.2 in this case. So if your > program is trying to dlopen it then I would suggest to use libsocketcan.so.2 > and if its trying to link to it during build time then it should add right > entry into DT_NEEDED sections. > > I am also wondering why would you want to move .so to main package. Thank you for the input! The request actually came from a client (a special case) and I started looking in to how to do this with Yocto/bitbake. It's still a little unclear to me how the package is split in to the different subpackages and how files end up in their locations. Any pointers on that? Also, the other confusing thing is the naming, where the main library is renamed to libsocketcan2, but all the other packages are named libsocketcan. -rw-r--r-- 3 tuomas tuomas 5,8K maali 25 10:19 libsocketcan2_0.0.11-r0.7_aarch64.ipk -rw-r--r-- 3 tuomas tuomas 16K maali 25 10:19 libsocketcan-dbg_0.0.11-r0.7_aarch64.ipk -rw-r--r-- 3 tuomas tuomas 3,1K maali 25 10:19 libsocketcan-dev_0.0.11-r0.7_aarch64.ipk -rw-r--r-- 3 tuomas tuomas 13K maali 25 10:19 libsocketcan-doc_0.0.11-r0.7_aarch64.ipk -rw-r--r-- 3 tuomas tuomas 8,9K maali 25 10:19 libsocketcan-src_0.0.11-r0.7_aarch64.ipk But I guess that's just semantics.
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