init_mib symbol clash (was: Re: Timeout errors on HP-UX 11.11)

Albert Chin wrote:
> Ok, found the problem. Building net-snmp on HP-UX requires -lnm
> (because -lnm provides open_mib() which files like
> agent/mibgroup/mibII/at.c depend on). -lnm provides an implementation
> of init_mib():
>   $ nm -BCpg /usr/lib/libnm.sl | grep init_mib
>   0000031096 T  init_mib
>   0000031144 T  init_mib
> 
> The default object file format for HP-UX/PA is SOM, not ELF. So, if
> you load multiple shared libraries with duplicate symbols, there is
> _no_ guarantee as to which symbol will be used from which library. Or,
> maybe there is and I don't know it. Anyway, don't use duplicate
> symbols on HP-UX.
> 
> Renaming init_mib in net-snmp-5.3.1 to init_net_snmp_mib fixed the
> problem. The fact that 'make test' worked on 11.00 and 11.23/PA was
> pure luck.

Argh. Looks like we'll have to rename our init_mib() to
netsnmp_init_mib() and use it internally, while providing an init_mib()
compat wrapper (that may or may not work on HP-UX, like before).

Please share your thoughts on whether this feels worth to apply before
5.4 or whether it has to wait for 5.5 (or whether it should be done
differently).


+Thomas

-- 
Thomas Anders (thomas.anders at blue-cable.de)

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