ports/182468: [patch] lang/gcc builds unrunnable emulators/virtualbox-ose

[Konstantin Belousov]

On Sun, Nov 03, 2013 at 10:10:01AM +0000, Peter Jeremy wrote:
> The following reply was made to PR ports/182468; it has been noted by GNATS.
> 
> From: Peter Jeremy <peter at rulingia.com>
> To: Volodymyr Kostyrko <c.kworr at gmail.com>
> Cc: bug-followup at FreeBSD.org
> Subject: Re: ports/182468: [patch] lang/gcc builds unrunnable
>  emulators/virtualbox-ose
> Date: Sun, 3 Nov 2013 21:09:07 +1100
> 
>  --jI8keyz6grp/JLjh
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>  On 2013-Nov-01 15:19:32 +0200, Volodymyr Kostyrko <c.kworr at gmail.com> wrote:
>  >Isn't it easier to map libstdc++.so.6 to gcc46/libstdc++.so.6 in=20
>  >/etc/libmap.conf?
>  
The libstdc++.so ABI is supposed to be backward-compatible, so, in theory,
libstdc++ from gcc 4.6 should be a drop-in replacement for the libstdc++
from our base.

>  As a general solution, definitely not - that would break programs (eg
>  those compiled with the base C++) that expect libstdc++.so.6 to be the
>  one in /usr/lib.
It should not.

>  
>  As a specific solution for VBox-ose, not really.  That would require
>  hand-crafting a libmap.conf entry that is only valid for one version
>  of gcc and is unknown to the ports/pkg system.  It would look like it
>  works up until VBox gets copied onto another system or lang/gcc changed
>  to a different version.
>  
>  Any fix has to fit into the ports/pkg system so it gets handled automatical=
>  ly
>  and doesn't get lost.  Ideally, lang/gcc (etc) would be fixed so they were
>  usable without having to rely on hacks in Mk/bsd.gcc.mk.
>  
>  --=20
>  Peter Jeremy
>  
>  --jI8keyz6grp/JLjh
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