[LLVMdev] -fPIC warning on every compile on Cygwin

[Aaron Gray]

On Fri, Feb 27, 2009 at 3:06 PM, Aaron Gray <aaronngray.lists at googlemail.com
> wrote:

>   On Fri, Feb 27, 2009 at 7:14 AM, Nick Lewycky <nicholas at mxc.ca> wrote:
>
>> Aaron Gray wrote:
>> > On Sat, Feb 21, 2009 at 7:14 PM, Nick Lewycky <nicholas at mxc.ca
>> > <mailto:nicholas at mxc.ca>> wrote:
>> >
>> >     Aaron Gray wrote:
>> >      > On Thu, Feb 19, 2009 at 6:55 PM, Nick Lewycky <nicholas at mxc.ca
>> >     <mailto:nicholas at mxc.ca>
>>  >      > <mailto:nicholas at mxc.ca <mailto:nicholas at mxc.ca>>> wrote:
>> >      >
>> >      >     Aaron Gray wrote:
>> >      >      > On Thu, Feb 19, 2009 at 5:52 PM, Nick Lewycky
>> >     <nicholas at mxc.ca <mailto:nicholas at mxc.ca>
>> >      >     <mailto:nicholas at mxc.ca <mailto:nicholas at mxc.ca>>
>> >      >      > <mailto:nicholas at mxc.ca <mailto:nicholas at mxc.ca>
>> >     <mailto:nicholas at mxc.ca <mailto:nicholas at mxc.ca>>>> wrote:
>> >      >      >
>> >      >      >     Aaron Gray wrote:
>> >      >      >      > Hi,
>> >      >      >      >
>> >      >      >      > I partly built LLVM on Cygwin yesterday and it was
>> >     fine as
>> >      >     far as it
>> >      >      >      > went. But after doing a svn update today I am
>> >     getting the
>> >      >     following
>> >      >      >      > warning on every compile :-
>> >      >      >      >
>> >      >      >      >
>> >      >      >      >     llvm[3]: Compiling LowerAllocations.cpp for
>> >     Debug build
>> >      >      >      >
>> >     /usr/src/llvm/lib/Transforms/Utils/LowerAllocations.cpp:1:
>> >      >      >     warning:
>> >      >      >      >     -fPIC ignored for target (all code is position
>> >      >     independent)
>> >      >      >      >
>> >      >      >      >
>> >      >      >      > This maybe happening on other targets too.
>> >      >      >
>> >      >      >     Thanks for the report. This is certainly due to my
>> change
>> >      >     last night to
>> >      >      >     make LLVM build as PIC by default.
>> >      >      >
>> >      >      > I was a little perplex at the warning as I could not
>> >     ascertain where
>> >      >      > thery were coming from and could see no obvious commit
>>  !:)
>> >      >      >
>> >      >      > Out of interest, could you point me to the patch or
>> >     commit, please.
>> >      >
>> >      >     r65019 / r65020:
>> >      >
>> >
>> http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20090216/073983.html
>> >      >
>> >
>> http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20090216/073984.html
>> >      >
>> >      > Can you please email me if and when it is fixed :)
>> >
>> >     Should be fixed in r65229:
>> >     http://llvm.org/viewvc/llvm-project?view=rev&revision=65229
>> >     <http://llvm.org/viewvc/llvm-project?view=rev&revision=65229>
>> >
>> > Cygwin is still giving "-fPIC ignored for target (all code is position
>> > independent)" warnings :(
>>
>> *Really!*
>>
>> Could you please rig Makefile.rules or something to print out the value
>> of $(LLVM_ON_WIN32) ? The only way I can think of this happening is if
>> that's erroneously false.
>>
>>
> Hi Nick,
>
> I am not famuliar enought with the build system to do this.
>
> Can you give me a resision number to check out before your changes so I can
> get my code tested.
>
> Then once I have done that I can tackel giving you some valid feedback.
>
>

You could send me a patch maybe that gives you the required information. I
am quite up for doing whatevers required to get Cygwin functioning properly
again.

Oh, I am going to try back to r65042.

Cheers,

Aaron
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