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From Nathan Beyer <ndbe...@apache.org>
Subject Re: [build] use.libstdc++6=true default?
Date Wed, 11 Feb 2009 02:43:35 GMT
Would it make more sense to add a "use.libstdc++.so.5" and have that
be the trigger to move back?

The other question is, do we even need to keep the v5 lib build
available? Is it being used?

-Nathan

On Tue, Feb 10, 2009 at 5:01 AM, Tim Ellison <t.p.ellison@gmail.com> wrote:
> Fine by me -- it'll make my life easier in Hudson too!
>
> Tim
>
> Nathan Beyer wrote:
>> Any objections to setting this 'true' by default? It seems we have
>> three people okay with it. If none are brought up, I or anyone can
>> switch it.
>>
>> -Nathan
>>
>> On Sat, Feb 7, 2009 at 5:43 PM, Gregory Shimansky <gshimansky@apache.org> wrote:
>>> On 8 February 2009 Nathan Beyer wrote:
>>>> Isn't "/usr/lib/libstdc++.so.6" generally a symlink to the specific
>>>> version folder that's currently the default?
>>> Nope. It depends very much on the distro layout. The most likely place to find
>>> libc is /lib where you can execute (you can actually execute this
>>> lib) /lib/libc.so* and see the version.
>>>
>>>> Regardless, moving to v6 as the default seems to make sense to me -
>>>> this seems to be the default on the latest distribution releases that
>>>> I've seen.
>>> With this I agree. Version 6 has been the default for a time I can't remember
>>> and those who still use v5 might as well switch after all.
>>>
>>>> On Sat, Feb 7, 2009 at 5:28 AM, Gregory Shimansky <gshimansky@apache.org>
>>> wrote:
>>>>> On 7 February 2009 Mark Hindess wrote:
>>>>>> Perhaps we should make use.libstdc++6=true the default?  Or maybe
even
>>>>>> try a little harder to make a better guess at the default with a
patch
>>>>>> like the one appended?
>>>>> Hmm it is not this easy. The library libstdc++ belongs to gcc, and its
>>>>> location depends on gcc version (gcc may be even installed in a
>>>>> non-standard location). Guessing it is not easy without configure script.
>>>>> Here's what I get when I execute "locate libstdc++.so.6" on Gentoo Linux:
>>>>>
>>>>> /usr/lib64/gcc/x86_64-pc-linux-gnu/3.4.6/32/libstdc++.so.6
>>>>> /usr/lib64/gcc/x86_64-pc-linux-gnu/3.4.6/32/libstdc++.so.6.0.3
>>>>> /usr/lib64/gcc/x86_64-pc-linux-gnu/3.4.6/libstdc++.so.6
>>>>> /usr/lib64/gcc/x86_64-pc-linux-gnu/3.4.6/libstdc++.so.6.0.3
>>>>> /usr/lib64/gcc/x86_64-pc-linux-gnu/4.1.2/32/libstdc++.so.6
>>>>> /usr/lib64/gcc/x86_64-pc-linux-gnu/4.1.2/32/libstdc++.so.6.0.8
>>>>> /usr/lib64/gcc/x86_64-pc-linux-gnu/4.1.2/libstdc++.so.6
>>>>> /usr/lib64/gcc/x86_64-pc-linux-gnu/4.1.2/libstdc++.so.6.0.8
>>>>>
>>>>> The naming of path like "x86_64-pc-linux-gnu" is very platform dependent
>>>>> as well.
>>>>>
>>>>> Someone might even want to use Intel compiler to build Harmony, I recall
>>>>> icc used to work at some point of time and produced quite an optimized
>>>>> code.
>>>>>
>>>>>> Index: working_classlib/make/properties.xml
>>>>>> ===================================================================
>>>>>> --- working_classlib/make/properties.xml        (revision 741852)
>>>>>> +++ working_classlib/make/properties.xml        (working copy)
>>>>>> @@ -313,6 +313,12 @@
>>>>>>      </condition>
>>>>>>      <property name="hy.portlib.stubs" value="false" />
>>>>>>
>>>>>> +    <condition property="use.libstdc++6" value="true">
>>>>>> +        <and>
>>>>>> +            <isset property="is.linux" />
>>>>>> +            <available file="/usr/lib/libstdc++.so.6" type="file"
/>
>>>>>> +        </and>
>>>>>> +    </condition>
>>>>>>      <condition property="hy.libstdc++.suffix" value=".libstdc++6">
>>>>>>          <isset property="use.libstdc++6"/>
>>>>>>      </condition>
>>>>>> Index: common_resources/make/properties.xml
>>>>>> ===================================================================
>>>>>> --- common_resources/make/properties.xml        (revision 741852)
>>>>>> +++ common_resources/make/properties.xml        (working copy)
>>>>>> @@ -69,6 +69,12 @@
>>>>>>      <property name="hy.test.timeout" value="900000" />
>>>>>>      <property name="hy.test.vmargs" value="" />
>>>>>>
>>>>>> +    <condition property="use.libstdc++6" value="true">
>>>>>> +        <and>
>>>>>> +            <isset property="is.linux" />
>>>>>> +            <available file="/usr/lib/libstdc++.so.6" type="file"
/>
>>>>>> +        </and>
>>>>>> +    </condition>
>>>>>>      <condition property="hy.platform.suffix" value=".libstdc++6">
>>>>>>          <isset property="use.libstdc++6"/>
>>>>>>      </condition>
>>>>> --
>>>>> Gregory
>>> --
>>> Gregory
>>>
>>
>

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