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Re: proper configuring & installation ???
Hi,
Thanks for your continued patience and time.
Are you saying it would have been better for me to install both 3.4.6
and 4.3.5 into ... say /opt/gcc and then use -V <3.4.6> or <4.3.5> to
run one or the other?
What does --enable-version-specific-runtime-libs and its buddy
--with-gxx-include-dir=<dirname> do? Would disastrous space-time
continuum consequences result if I tried to install multiple versions
into the same prefix without using this runtime-libs option thingie???
Obviously I could just keep building compilers and trying various
options. But for the sake of the planet's environment I would prefer
to have some idea what might happen. If it runs to completion, the
4.3.5 build takes like 6 or 8+ hours (1000 MHz 750GX).
kevin
On Mon, Nov 15, 2010 at 1:02 PM, Ian Lance Taylor <iant@google.com> wrote:
> kevin diggs <diggskevin38@gmail.com> writes:
>
>> Can the compiler be configured to automatically include -rpath options
>> when it knows that these internal libraries are being used? Otherwise
>> it does not look like I can keep both 3.4.6 and 4.3.5 installed at the
>> same time (though 3.4.6 can "probably" just use the internal parts
>> from 4.3.5 ...).
>
> Please reply to the mailing list, not just to me. Thanks.
>
> There is no current configure option for that. The gcc installation
> system is designed to permit multiple versions to be installed using the
> same --prefix, in which case a single LD_LIBRARY_PATH or
> /etc/ld.so.cache entry suffices for all versions. You are using
> different --prefix options, which is fine, but means that you do need
> multiple options.
>
> I personally would have no objection to such a configure option, but it
> does not currently exist.
>
> Ian
>