[yocto] Shared library questions

[Gary Thomas]

Sorry if this is a bit off topic, but I'm having issues with
how [some of my] shared libraries are being packaged and used.

I have a library recipe which uses this line to pack up it's
shared libraries:
     oe_libinstall -C lib -so libflx_fes ${D}${libdir}
This yields this in it's install image:

     $ ls -l tmp/work/ppc603e-amltd-linux/flx-fes-lib/1.2.1-r0/image/usr/lib
     total 20
     lrwxrwxrwx 1 gthomas gthomas    19 Nov  3 12:53 libflx_fes.so -> libflx_fes.so.1.2.1
     lrwxrwxrwx 1 gthomas gthomas    19 Nov  3 12:53 libflx_fes.so.1 -> libflx_fes.so.1.2.1
     -rwxr-xr-x 3 gthomas gthomas 17238 Nov  3 12:53 libflx_fes.so.1.2.1

This all looks good to me.  This is then packaged as:

     tmp/work/ppc603e-amltd-linux/flx-fes-lib/1.2.1-r0/packages-split/flx-fes-lib-dev/usr/lib:
     total 0
     lrwxrwxrwx 1 gthomas gthomas 19 Nov  3 13:00 libflx_fes.so -> libflx_fes.so.1.2.1

     tmp/work/ppc603e-amltd-linux/flx-fes-lib/1.2.1-r0/packages-split/flx-fes-lib/usr/lib:
     total 12
     lrwxrwxrwx 1 gthomas gthomas   19 Nov  3 13:00 libflx_fes.so.1 -> libflx_fes.so.1.2.1
     -rwxr-xr-x 2 gthomas gthomas 8296 Nov  3 13:00 libflx_fes.so.1.2.1

So the libflx_fes.so ends up in the -dev package and the rest
in the -lib package.

I then have another package that depends on flx-fes-lib.  It
uses the library via this link line:
     powerpc-amltd-linux-gcc  -m32 -mhard-float -mcpu=603e \
       --sysroot=/home/local/efacec-latest_2014-10-15/map8001-ppc8379-v2/tmp/sysroots/map8001-ppc8379-revF \
       -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed -L../lib/ \
       -o ../bin/flx_redundancy_supervision redundancy_supervision.o redundancy_supervision_ctrl.o
       -lpacket_lib -lsupervision_lib -lflx_fes -lrt

The weird thing is that this ends up with the program depending
on the libflx_fes.so, not the versioned library libflx_fes.so.1
     # ldd /usr/sbin/flx_redundancy_daemon
         linux-vdso32.so.1 (0x00100000)
         libpacket_lib.so.0 => /usr/lib/libpacket_lib.so.0 (0x0ffdd000)
         libsupervision_lib.so.0 => /usr/lib/libsupervision_lib.so.0 (0x0ffb8000)
         libflx_fes.so => not found
         librt.so.1 => /lib/librt.so.1 (0x0ff90000)
         libc.so.6 => /lib/libc.so.6 (0x0fe18000)
         libpthread.so.0 => /lib/libpthread.so.0 (0x0fdde000)
         /lib/ld.so.1 (0x48000000)

I also get a warning from bitbake:
     WARNING: QA Issue: flx-redundancy-supervision requires libflx_fes.so, but no providers in its RDEPENDS [file-rdeps]

Can someone explain why this is happening and how I fix it?

Sadly, I can't share these recipes or the code (they are available
to me only under NDA).  If needed, I could try to replicate the
issue with something I can share.

-- 
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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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