Re: how to fix WARNING: QA Issue: libpam: installed in the base_prefix, requires a shared library under exec_prefix

[Yao Zhao <yao.zhao@windriver.com>]

On 12-08-03 02:22 PM, Mark Hatle wrote:
> On 8/3/12 1:07 PM, Yao Zhao wrote:
>> On 12-08-03 01:45 PM, Mark Hatle wrote:
>>> On 8/3/12 11:44 AM, Yao Zhao wrote:
>>>> Hi all,
>>>>
>>>> Any suggestion to fix these kinds of QA warnings?
>>>>
>>>> libpam is referencing /usr/lib/libcrack from /lib/security.
>>>>
>>>> I tried to fix cracklib to install to /lib but cracklib is using other
>>>> libraries from /usr/lib, I am afraid that I am touching a chain, so 
>>>> any
>>>> good ideas?
>>>
>>> Historically I'm used to cracklib being in /lib... but I also don't
>>> remember a huge chain of additional libraries.
>>>
>> libcrack is depending on libz and libz is in usr/lib too.
>> Seems libz didn't depend another.
>>
>> What exactly reason that this is a serious problem? Is this a standard?
>> It is quite possible that a lib library depending on usr/lib then .....
>> Do we have a one-shot cure?
>
> The QA message is because the / (non-/usr) was originally designed to 
> be the minimal boot environment, and then /usr would be added to 
> provide the full system capabilities.  There are some advantages to 
> this behavior for embedded systems, as it can allow for smaller 
> footprint systems to be the boot environment.
>
> With modern components like udev, systemd, and such, sometimes it's 
> difficult, if not nearly impossible to have this split though, as many 
> of the components require libraries and/or binaries that normally 
> reside in /usr.   Generally we have the choice to either move the 
> libraries or binaries, or break the dependency on those items (by 
> changing the configuration, statically linking, or changing the 
> behavior so the library/binary is no longer needed.)
>
> I suspect libz is needed because the cracklib dictionary is 
> compressed. Dependending on usage, it may make sense to statically 
> link libz into libcrack, and move libcrack to /lib.
>
thanks Mark!
I have modified zlib and cracklib both to install to /lib. In case there 
are other packages installed to /lib but need libz too.
patch soon.

yao
> --Mark
>
>> yao
>>> It may be worth identifying the chain and seeing if we can break it,
>>> or at least reduce it in some fairly easy way.
>>>
>>> --Mark
>>>
>>>> thanks,
>>>> yao
>>>>
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