Re: [netcdfgroup] abi version for netcdf-4.1.2

• To: Russ Rew <russ@xxxxxxxxxxxxxxxx>
• Subject: Re: [netcdfgroup] abi version for netcdf-4.1.2
• From: Andrey Ponomarenko <aponomarenko@xxxxxxxxx>
• Date: Mon, 11 Apr 2011 13:04:41 +0400

On 04/06/2011 05:41 PM, Russ Rew wrote:
> Andrey,
>
>   
>> But there are two changed constants in C interface: NC_WRITE (from 0x1
>> to 0x0001) and NC_NOCLOBBER (from 0x4 to 0x0004) used by ncopen and
>> nccreate functions. So, the soname has been bumped:
>>
>> 4.1.1/lib> readelf -Wa libnetcdf.so.4.0.0|grep SONAME
>>  0x0000000e (SONAME)                     Library soname: [libnetcdf.so.4]
>>
>> 4.1.2/lib> readelf -Wa libnetcdf.so.7.0.1|grep SONAME
>>  0x0000000e (SONAME)                     Library soname: [libnetcdf.so.7]
>>     
> How are those "changed constants"?  "0x1" and "0x0001" are just
> different representations of the same integer constant 1.  Similarly
> with "0x4" and "0x0004" for an integer 4.  Changes in syntax for an
> integer constant should not result in claims of an incompatible
> interface or result in a new soname.  This looks like another false
> positive to me.
>
> --Russ
>
>   

You are right. It is a false positive too. The only reason for the
version bump of C library I see for now is the very long list of
improvements and bug-fixes between 4.1.1 and 4.1.2 in the change-log [1].

[1]
http://linuxtesting.org/upstream-tracker/changelogs/netcdf/4.1.2/changelog.html

-- 
Andrey Ponomarenko
Department for Operating Systems at ISPRAS
 web:    http://www.LinuxTesting.org
 mail:   aponomarenko@xxxxxxxxx

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  • Re: [netcdfgroup] abi version for netcdf-4.1.2
    • From: Ed Hartnett