[Buildroot] host ldconfig package

[Jeff Horn]

Hi,

I am using buildroot for one of our i.MX6 based boards and I have it mostly
working ( I can't get video to work ). While troubleshooting freescales
gstreamer plugins I noticed the /etc/ld.so.cache was empty. I found in the
buildroot makefile where ldconfig is called so I manually ran
/sbin/ldconfig -v -r output/target and I see lots of output like this:

/sbin/ldconfig.real: /usr/lib/libGLESv2.so is for unknown machine 40.

It seems the ldconfig on my host (Ubuntu 14.04) cannot handle the tartget
rootfs. I found a post from a year ago with the same issue but I did not
see any resolution.

So, I looked at my current Yocto build and I discovered Yocto builds a
native hacked version of ldconfig and that is what gets called for the
target rootfs. So, I copied that binary over and modified buildroots
Makefile to call that instead and the cache is now populated correctly.

With that all working I created a buildroot host ldconfig package based on
the Yocto code ( I'm using BR2_EXTERNAL) and using that the ld.so.cache
gets populated. I still had to modify the buildoort Makfile to look for the
newly installed host ldconfig.

I guess my question is are others having any issues with image finalization
and ldconfig?

On another note I see others are working on the fsl-gst-plugins and I can
help test that as I REALLY want to get a working image out of buildroot.

Thanks in advance,
Jeff
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