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List:       macports-dev
Subject:    Re: About new default configure-{c(pp|xx)?,ld}flags
From:       Ryan Schmidt <ryandesign () macports ! org>
Date:       2007-05-27 6:59:48
Message-ID: 781A9614-55ED-4DA2-ABB3-36B1B6E5BE39 () macports ! org
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On May 26, 2007, at 04:44, Paul Guyot wrote:

> On May 26, 2007, at 5:48 AM, N_Ox wrote:
>
>> The new configure flags change made in 1.4 seems to cause problems  
>> with some ports (at least 2, maybe more).
>> This change introduces things like default ldflags -L/opt/local/lib.
>> The problem with these flags is that some ports write ENV flags  
>> before the configure script ones.
>> On a port upgrade, this causes gcc to include the installed  
>> headers instead of the distfile ones, the same goes
>> for ld and liking against libs.
>>
>> As this is useful only if the port depends on some other ports,  
>> why not put these defaults settings only if
>> the port does depend on another one?
>
> This problem is not new and it is not related to the default flags.  
> For example, it occurs with ruby where, before I patched it, the  
> bootstrap ruby interpreter that was used was the one in /opt/local  
> on upgrade.
>
> The virtual chroot technology will fix that globally, by hiding a  
> previous version of an installed port on upgrade. In the meanwhile,  
> port maintainers are invited to fix the problem on each port. And  
> removing ldflags is only a partial fix, as a previous version of  
> the software could be elsewhere on the -L path (e.g. in /usr/).

I'm not sure how to fix this for my ports, nor even how to detect  
whether it is a problem for my ports. So I would certainly appreciate  
if this virtual chroot could be implemented to fix it globally.  
(What's "virtual" about this chroot, by the way?)


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