[PATCH] D25683: [docs] Increase minimum supported GCC version for building LLVM to 4.8

[Aaron Ballman via llvm-commits]

On Tue, Oct 18, 2016 at 1:52 PM, Teresa Johnson <tejohnson at google.com> wrote:
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> On Tue, Oct 18, 2016 at 10:29 AM, Aaron Ballman <aaron at aaronballman.com> wrote:
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>> It turns out that there *may* be a problem with dropping GCC 4.7 right
>> now. It seems that our documentation builder (which is not a public
>> bot, unfortunately) that is used for building the public-facing
>> attribute and compiler option documents is on a machine running GCC
>> 4.7. I've alerted the person maintaining the bot about it, but I'm not
>> certain how soon that builder will be switched over (it may already be
>> in the process of switching, for all I know).
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>> I apologize for not recognizing this earlier, but it turns out that a
>> recent commit broke that bot this morning, which is how I realized
>> that the bot is still on GCC 4.7.
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> Ok do we need to revert this change? If so, how long would it take to get the bot upgraded to gcc 4.8? I am surprised the bot has been working though - this change was motivated by multiple reports of clang and LLVM not building with gcc 4.7. Or is it just building documentation?

I think we may need to revert this change, but I'll know for sure
tomorrow when the bot gives me a status report. I'm a consumer of this
bot, but not the producer of it. I don't have access to the bot, but
it sends me an automatic status update after it builds the
documentation, which is done on a daily schedule.

I've emailed Tanya (who helped me get this builder set up) about
upgrading the bot, but I've not heard back on the status or a
timeline. AFAIK, the bot is only trying to build the clang-tblgen tool
(and what it relies on), which probably explains why it hasn't broken
until yesterday.

~Aaron

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> Thanks,
> Teresa
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>> ~Aaron
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>> On Tue, Oct 18, 2016 at 12:40 PM, Renato Golin via llvm-commits
>> <llvm-commits at lists.llvm.org> wrote:
>> > rengolin accepted this revision.
>> > rengolin added a comment.
>> > This revision is now accepted and ready to land.
>> >
>> > In https://reviews.llvm.org/D25683#573000, @jlebar wrote:
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>> >> If someone really wants to use gcc 4.7, nothing is stopping them from going into cmake and commenting out this line.  :)
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>> >
>> > Good point. :)
>> >
>> > LGTM. Thanks!
>> >
>> >
>> > https://reviews.llvm.org/D25683
>> >
>> >
>> >
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>> > llvm-commits at lists.llvm.org
>> > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-commits
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> --
> Teresa Johnson | Software Engineer | tejohnson at google.com | 408-460-2413