[LLVMdev] Windows development and "virus" in LLVM test suite

[Mikael Lyngvig]

I admit I belong to a small group of not-too-bright people who still aspire
to use LLVM.  But I kind of see that as a highly valuable feature, insofar
I convert this fact into something constructive (such as FAQ writing) :-)

I actually did recommend people to disable their antivirus solution for two
reasons - the aforementioned "virus" and the speed slowdown that they'll
experience, but then somebody (can't remember who) reacted and said it
wasn't a good idea to recommend people to disable their antivirus solution.

However, I see a nifty compromise visualising behind my eyes: Ask the user
to add the LLVM source and build directories to their virus ignore list.
 This will solve both issues.

-- Geez, sometimes I'm smarter than I am.

2012/6/15 Benjamin Kramer <benny.kra at googlemail.com>

>
> On 15.06.2012, at 22:53, Mikael Lyngvig wrote:
>
> > 1. I can't tell Microsoft Security Essentials to ignore anything.  Even
> if I click Allow, it breaks the pull.
> > 2. The issue is not me.  I don't download virus infested stuff and I
> don't visit dangerous sites so I rarely have a need for antivirus solutions.
> >
> > The issue is the newcomer Windows user whom I have to instruct to
> disable and/or remove his antivirus program if he or she wants to set up a
> Windows buildbot slave.  A bit drastic, but that's life as it is now.
>
> The intersection of "people using the LLVM test-suite" and "people who
> don't know how to disable their antivirus" may not be empty, but it's
> really too small to care about. The test-suite isn't meant to be used by
> end-users, we can expect anyone who wants to try the testsuite to be smart
> enough to put "eicar" in the search engine of their choice and then then
> disable their antivirus after finding out what it is.
>
> I'm also strongly suggesting to disable any kind of antivirus guard on a
> machine that builds and tests llvm because it slows down builds
> significantly and has the tendency to make testing more unstable. Racing
> file handle locks on windows are a big pain, and antivirus solutions tend
> to create these conditions all the time. We have seen bogus, hard to
> reproduce test failures because of this in the past.
>
> - Ben
>
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