Those are the directions for using gcc-4.8 too. I wrote them.  Sounds like you were actually not using GCC 4.8 before..?<span></span><br><br>On Sunday, November 3, 2013, Alfredo Di Napoli  wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">Eventually, this is what worked for me (so gcc 4.8 was a no-go for me):<div><br></div><div><a href="http://haskell-workshop.github.io/tutorials/osx/2013-10-23-mavericks-ghc.html" target="_blank">http://haskell-workshop.github.io/tutorials/osx/2013-10-23-mavericks-ghc.html</a><br>

</div><div><br></div><div>HTH,</div><div>A.</div></div><div><br><br><div>On 2 November 2013 23:17, Alfredo Di Napoli <span dir="ltr">&lt;<a>alfredo.dinapoli@gmail.com</a>&gt;</span> wrote:<br>
<blockquote style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Oh, before I forgot (sorry for the spam):<div><br></div><div>The above cabal cmd worked NOT in a cabal sandbox. Issuing that into a cabal sandbox still triggers the problems. I&#39;ll try to ask into the cabal issue tracker to see if I discover something.</div>

<span><font color="#888888">
<div><br></div><div>A.</div></font></span></div><div><div><div><br><br><div>On 2 November 2013 23:14, Alfredo Di Napoli <span dir="ltr">&lt;<a>alfredo.dinapoli@gmail.com</a>&gt;</span> wrote:<br>

<blockquote style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Ok, for the lost souls which will find this thread, I&#39;ve solved the problem in two steps:<div><br></div>

<div>a) Used the script here: <a href="http://justtesting.org/post/64947952690/the-glasgow-haskell-compiler-ghc-on-os-x-10-9" target="_blank">http://justtesting.org/post/64947952690/the-glasgow-haskell-compiler-ghc-on-os-x-10-9</a></div>



<div><br></div><div>b) Specifically for the snap problem, I&#39;ve solved it following the FAQ here: <a href="http://www.haskell.org/haskellwiki/GHC/FAQ#I_get_an_error_message_from_GHCi_about_a_.22duplicate_definition_for_symbol_module_registered.22" target="_blank">http://www.haskell.org/haskellwiki/GHC/FAQ#I_get_an_error_message_from_GHCi_about_a_.22duplicate_definition_for_symbol_module_registered.22</a></div>



<div><br></div><div>The command was:</div><div>cabal install snap --ld-options=&quot;-x&quot;<br></div><div><br></div><div>HTH,</div><div>A.</div></div><div><div><div><br><br>
<div>On 2 November 2013 22:40, Alfredo Di Napoli <span dir="ltr">&lt;<a>alfredo.dinapoli@gmail.com</a>&gt;</span> wrote:<br>
<blockquote style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">I&#39;m trying to fiddle with clang scripts from Manuel Chakavarty and this one:<div><br></div><div><a href="https://gist.github.com/mzero/7245290" target="_blank">https://gist.github.com/mzero/7245290</a><br>



</div><div><br>
</div><div>the former works (vector builds fine), but when installing Snap it generates the following error:</div><div><br></div><div><div>Loading package network-2.4.2.0 ...</div><div><br></div><div>GHCi runtime linker: fatal error: I found a duplicate definition for symbol</div>




<div>   _hsnet_freeaddrinfo</div><div>whilst processing object file</div><div>   /Users/adinapoli/programming/haskell/faceguess/.cabal-sandbox/lib/x86_64-osx-ghc-7.6.3/network-2.4.2.0/libHSnetwork-2.4.2.0.a</div><div>This could be caused by:</div>




<div>   * Loading two different object files which export the same symbol</div><div>   * Specifying the same object file twice on the GHCi command line</div><div>   * An incorrect `package.conf&#39; entry, causing some object to be</div>




<div>     loaded twice.</div><div>GHCi cannot safely continue in this situation.  Exiting now.  Sorry.</div><div><br></div><div>Failed to install snap-0.13.0.4</div><div><div>cabal: Error: some packages failed to install:</div>




</div><div>snap-0.13.0.4 failed during the building phase. The exception was:</div><div>ExitFailure 1</div></div><div><br></div><div><br></div><div>I haven&#39;t tried the latter, though.</div><span><font color="#888888"><div>



<br></div><div>A.</div></font></span></div><div><div>
<div><br><br><div>On 2 November 2013 22:23, Carter Schonwald <span dir="ltr">&lt;<a>carter.schonwald@gmail.com</a>&gt;</span> wrote:<br>



<blockquote style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">i have no clue.  Doesn&#39;t GHC also come prebuilt with Vector? <div><br></div><div>might be worth filing a ticket on GHC track too. perhaps.</div>




</div><div><div><div><br><br><div>

On Sat, Nov 2, 2013 at 6:02 PM, Alfredo Di Napoli <span dir="ltr">&lt;<a>alfredo.dinapoli@gmail.com</a>&gt;</span> wrote:<br><blockquote style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">





<div dir="ltr">Hi Carter,<div><br></div><div>I do have Xcode 5 installed, this is the strange thing.</div><div>Do you suggest to try rei</div></div></blockquote></div></div></div></div></blockquote></div></div></div></div>
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