Re: [yocto] Shared lib symlinks in target image

[Khem Raj <raj.khem@gmail.com>]

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Libraries have another symlink which looks something like libfoo.so.1 and 2
etc that is the one which should be used by apps
On Mon, Oct 4, 2021 at 6:12 AM Lijun Chen <lijchen@blackberry.com> wrote:

> I have an app built in a different environment that has lower versioned
> libs, such as boost. I was wondering if on the target there are symlinks to
> those libs, whether the app can be run on a target that has newer libs
> without resbuild against a matched env. Seems that is not viable.
> ------------------------------
> *From:* Khem Raj <raj.khem@gmail.com>
> *Sent:* Saturday, October 2, 2021 11:23:58 PM
> *To:* Lijun Chen
> *Cc:* yocto@lists.yoctoproject.org
> *Subject:* Re: [yocto] Shared lib symlinks in target image
>
> On Sat, Oct 2, 2021 at 6:55 PM Lijun Chen <lijchen@blackberry.com> wrote:
> >
> > Hi,
> >
> >
> > When I build a yocto image, I added some packages into IMAGE_INSTALL,
> such as boost, thrift, etc. I notice in the target OS image, the shared
> libs don't the symlinks. But in the SDK image, the symlinks are there. For
> example,
> >
> > lrwxrwxrwx 1 root root       22 Oct  2 16:41 libboost_filesystem-mt.so
> -> libboost_filesystem.so
> > lrwxrwxrwx 1 root root       29 Oct  2 16:41 libboost_filesystem.so ->
> libboost_filesystem.so.1.75.0
> >
> > Is there a way to add the symlinks to the target image as well?
> >
> >
> > With the symlinks, I assume we can run an old application even the
> dependent lib is a newer version?
> >
>
> unversioned symlinks should not be used they are there to be used for
> linking during build time. Unless you need to do builds on targets you
> really do not need them
> so explain you usecase. Are you trying to build stuff on device ?
>
> >
> > Thanks,
> >
> > Lijun
> >
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