Re: [ptxdist] The second symbolic links are not copied to the target

[Michael Olbrich <m.olbrich@pengutronix.de>]

Hi,

On Thu, Jul 05, 2018 at 01:02:47PM +0200, Alejandro Vázquez wrote:
> None of the two I think. This was changed in commit
> > f13787aca6bc51976cbc34be7262683ccd134474, log message was:
> > ptxd_install_shared: don't install last link
> > It's only needed at build time.
> 
> 
> Fine but in the ptxdist documentation
> <https://www.ptxdist.org/doc/ref_manual.html#install-lib> it indicates that
> the file *.so is copied.

This is outdated. I need to fix that.

> Is this causing any actual problems?

These links should not be necessary at runtime. That's how library
versioning on Linux works.
If you check your desktop Linux, you'll notice, that the last link is in
the devel package: It's only needed at built time.

> Yes. At least it gives problems with Java applications.
> .......
>  [Failed to open library /usr/lib/classpath/libjavanio.so:
> /usr/lib/classpath/libjavanio.so: cannot open shared object file: No such
> file or directory]
>  [Failed to open library ./libjavanio.so: ./libjavanio.so: cannot open
> shared object file: No such file or directory]
>  [Failed to open library /usr/lib/jni/libjavanio.so:
> /usr/lib/jni/libjavanio.so: cannot open shared object file: No such file or
> directory]
> ......
> 
> It also happens with some Gstreamer plugins.
> 
> (gst-plugin-scanner:252): GStreamer-WARNING **: Failed to load plugin
> '/usr/lib/gstreamer-1.0/libgstimxg2d.so': libGAL.so: cannot open shared
> object file: No such file or directory

These libraries are broken. I expect they don't have a soname (you can
check that with 'readelf -d <filename>').

You need to create the link manually with 'install_link'.

Michael

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