Re: -no_fixup_chains patch

Ileana Dumitrescu <[email protected]> Thu, 4 Jul 2024 16:54:03 +0300

Newsgroups	gmane.comp.gnu.libtool.general
Message-ID	<[email protected]>

On 03/07/2024 21:28, Ozkan Sezer wrote:
> On Wed, Jul 3, 2024 at 6:42 PM Ileana Dumitrescu
> <[email protected]> wrote:
>>
>> On 02/07/2024 22:01, Václav Haisman wrote:
>>> On 28. 06. 24 0:41, Ozkan Sezer wrote:
>>>> [Sorry, I seem to have deleted the mailing list message from my inbox]
>>>>
>>>> Regarding -no_fixup_chains patch i.e.
>>>>
>>>> http://git.savannah.gnu.org/gitweb/?p=libtool.git;a=commitdiff;h=3d1baeeef90a6b9e16c545babe833f28dca155a7
>>>>
>>>> Is '+=' universally supported?? Maybe change to something like the
>>>> following??
>>>
>>> Is there a reason not to use AS_VAR_APPEND?
>>> (https://www.gnu.org/software/autoconf/manual/autoconf-2.69/html_node/Polymorphic-Variables.html)
>>>
>>
>> I do not think there is a reason not to, so I generated a patch for it:
>>
>> diff --git a/m4/libtool.m4 b/m4/libtool.m4
>> index e9eef32f..36e5bf4e 100644
>> --- a/m4/libtool.m4
>> +++ b/m4/libtool.m4
>> @@ -1089,10 +1089,9 @@ _LT_EOF
>>            10.[[012]],*|,*powerpc*-darwin[[5-8]]*)
>>              _lt_dar_allow_undefined='$wl-flat_namespace $wl-undefined
>> ${wl}suppress' ;;
>>            *)
>> +          _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup'
>>              if test yes = "$lt_cv_support_no_fixup_chains"; then
>> -            _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup $wl-no_fixup_chains'
>> -          else
>> -            _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup'
>> +            AS_VAR_APPEND([_lt_dar_allow_undefined], [' $wl-no_fixup_chains'])
>>              fi
>>            ;;
>>          esac
>> --
>>
>> It should result in:
>> allow_undefined_flag="\$wl-undefined \${wl}dynamic_lookup
>> \$wl-no_fixup_chains"
> 
> Seems to work for me. IMO, it is a bit of an extravaganza, but I have no
> strong no feelings against it...
> 
> However, if you guys do this: AS_VAR_APPEND requires autoconf 2.64. What
> is the minimum required autoconf version for libtool.m4?

The current minimum autoconf version required is 2.62 for libtool.m4.
For bootstrapping libtool, it requires 2.64 already, and standalone
libtool needs 2.59 of autoconf. I do not think it should be an issue to
bump the required minimum autoconf version for libtool.m4 from 2.62 to
2.64, but tell me if there are concerns.

-- 
Ileana Dumitrescu

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