libc6: ld.so.cache not being read

[Nathan Rennie-Waldock]

In 2.13-35, ld.so seems to be ignoring ld.so.cache. Last version I know it was working in is 2.13-33.

Part of `LD_DEBUG=libs ldd /opt/xbmc-bcm/xbmc-bin/lib/xbmc/xbmc.bin`:
      1202: find library=libbcm_host.so [0]; searching
      1202: search cache=/etc/ld.so.cache
      1202: search path=/lib/arm-linux-gnueabihf:/usr/lib/arm-linux-gnueabihf:/lib:/usr/lib (system search path)
      1202: trying file=/lib/arm-linux-gnueabihf/libbcm_host.so
      1202: trying file=/usr/lib/arm-linux-gnueabihf/libbcm_host.so
      1202: trying file=/lib/libbcm_host.so
      1202: trying file=/usr/lib/libbcm_host.so
        libbcm_host.so => not found

root:~# cat /etc/ld.so.conf.d/vmcs.conf
/opt/vc/lib
root:~# rm -f /etc/ld.so.cache
root:~# ldconfig
root:~# ldconfig -p | grep libbcm_host
        libbcm_host.so (libc6,2048) => /opt/vc/lib/libbcm_host.so
root:~# LD_LIBRARY_PATH=/opt/vc/lib/ ldd /opt/xbmc-bcm/xbmc-bin/lib/xbmc/xbmc.bin | grep libbcm
        libbcm_host.so => /opt/vc/lib/libbcm_host.so (0x40f9c000)

With 2.13-33:
root:~# LD_DEBUG=libs ldd /opt/xbmc-bcm/xbmc-bin/lib/xbmc/xbmc.bin
      1871: find library=libbcm_host.so [0]; searching
      1871: search cache=/etc/ld.so.cache
      1871: trying file=/opt/vc/lib/libbcm_host.so
        libbcm_host.so => /opt/vc/lib/libbcm_host.so (0x40f6f000)

[Federico Cuello (fedux)]

Same here in ArchLinux arm for RB-pi

[peter green (plugwash)]

Is this still an issue in current versions of raspbian? I notice there have been a few revisions to the eglibc packaging since you reported this.

[peter green (plugwash)]

This seems to be an issue of inadequate cleanup during various changes in the way ldconfig handles hard float libraries. It just hit again in some cases with the latest update.

I'm now in discussion with the debian arm porters about fixing this.

[peter green (plugwash)]

BTW in the meantime the manual fix for anyone encoutering this issue is to do the following as root.

rm /etc/ld.so.cache
rm /var/cache/ldconfig/aux-cache
ldconfig

[peter green (plugwash)]

Should now be fixed in version 2.13-38+rpi2