<div class="gmail_quote">On Thu, Feb 19, 2009 at 5:52 PM, Nick Lewycky <span dir="ltr"><<a href="mailto:nicholas@mxc.ca">nicholas@mxc.ca</a>></span> wrote:<br>
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<div class="Wj3C7c">Aaron Gray wrote:<br>> Hi,<br>><br>> I partly built LLVM on Cygwin yesterday and it was fine as far as it<br>> went. But after doing a svn update today I am getting the following<br>> warning on every compile :-<br>
><br>><br>> llvm[3]: Compiling LowerAllocations.cpp for Debug build<br>> /usr/src/llvm/lib/Transforms/Utils/LowerAllocations.cpp:1: warning:<br>> -fPIC ignored for target (all code is position independent)<br>
><br>><br>> This maybe happening on other targets too.<br><br></div></div>Thanks for the report. This is certainly due to my change last night to<br>make LLVM build as PIC by default.<br></blockquote>
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<div>I was a little perplex at the warning as I could not ascertain where thery were coming from and could see no obvious commit !:)</div>
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<div>Out of interest, could you point me to the patch or commit, please.</div>
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<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid"><span id=""></span><br>Part of the fix is going to be splitting apart whether we're building<br>PIC and whether we pass in the -fPIC flag. We want to know whether the<br>
build is PIC in order to control whether libLTO should be built. On your<br>platform we'll still want to build libLTO but don't want to pass the<br>-fPIC flag.<br></blockquote>
<div>Nice</div>
<div><br>>The other part of the fix I'm not so sure about. How should the build<br>>system detect that we're building PIC without the -fPIC flag on this<br>>platform?</div>
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<div>Looks like configure/autoconf territory. 'configure' flashes up that Cygwin supports PIC. See attached config.out file.</div>
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<div>Aaron</div>
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<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid"><span id=""></span><br>Nick<br><br>> Aaron<br>><br>><br>><br>><br>> ------------------------------------------------------------------------<br>
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