[PATCH/RFC] Keep exported _nl_default_dirname constant when prefix changes

[Jonathan Nieder]

Andreas Schwab wrote:
> Jonathan Nieder <jrnieder@gmail.com> writes:
 
>> diff --git a/intl/Versions b/intl/Versions
>> index d76982db..4491e595 100644
>> --- a/intl/Versions
>> +++ b/intl/Versions
>> @@ -1,7 +1,14 @@
>> +%define SHARED
>> +%include <shlib-compat.h>
>> +
>>  libc {
>>    GLIBC_2.0 {
>>      # global variables
>> -    _nl_msg_cat_cntr; _nl_default_dirname; _nl_domain_bindings;
>> +    _nl_msg_cat_cntr;
>> +%if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_17)
>> +    _nl_default_dirname;
>> +%endif
>
> Do you need this?  AFAIU if the symbol is not defined (ie. min-ABI is
> 2.17) it is just ignored.

I think you're right.  The only Versions files (hurd/Versions and
mach/Versions) that do this kind of thing also have negated blocks
("%if !SHLIB_COMPAT (...)") so presumably they're doing something more
complicated.

Thanks.  The next version will leave intl/Versions alone.