Hi all,

I tried this — building GHC HEAD configured to use the native code gen, and then building the cross compiler using that, and got the same errors as everything else thus far:

https://gist.github.com/lukexi/02366ed57171400b961a

10.9 Mavericks is likely coming out in less than a month, along with iOS7 and Xcode5 final, so it's definitely worth sorting this out!

Not quite sure what to try next though...

Best

Luke

On Sun, Aug 11, 2013 at 3:18 PM, Carter Schonwald <carter.schonwald@gmail.com> wrote:

What if you build a copy of head with the native code gen. Then build the cross compiler using head on head?

On Sunday, August 11, 2013, Luke Iannini wrote:

And the truly final word for the moment : ) —

I built a tool to partially automate the indentation workaround for LLVM 3.0 and it yields the same "co-processor offset out of range"/"unsupported relocation on symbol LCPI65_0" errors LLVM 3.3/3.4 did when it finally gets to integer-simple/GHC/Integer/Type.hs.

On Sun, Aug 11, 2013 at 3:06 AM, Luke Iannini <lukexipd@gmail.com> wrote:

OK! So just to summarize:

Building GHC HEAD with LLVM 3.0 or 3.2 (using GHC 7.6.3 as the bootstrap) on OS X 10.9 DP5/Xcode 5 DP5 exhibits very strange behavior wherein layout-based code along with mixed-tabs-and-spaces code fails to parse correctly, with issues in hundreds of files in the GHC HEAD tree.

I don't have a 10.8 machine to check if this is a 10.9 exclusive issue, so I'd love if someone can try using these binaries to build GHC HEAD: http://llvm.org/releases/3.0/clang+llvm-3.0-x86_64-apple-darwin11.tar.gz

Building GHC HEAD with LLVM 3.3 or 3.4 works great as a regular compiler with the 10.9 workarounds I outlined in another thread, but fails when compiling as a cross-compiler (./configure --target=arm-apple-darwin10) with these errors: 

https://gist.github.com/lukexi/2b129f34fa027172c5ee

So I'm between a rock and a hard place at the moment.

The only (very tedious and slow) workaround I've found for the 3.0/3.2 bug is to manually expand tabs to spaces, and to transform

do x

   y

into

do

    x

    y

(similarly for where and let blocks)

Cheers

Luke

On Sun, Aug 11, 2013 at 1:53 AM, Luke Iannini <lukexipd@gmail.com> wrote:

Argh, sorry for the confusion: 3.2 *does* exhibit the issue. 3.3 and 3.4 do not.

On Sun, Aug 11, 2013 at 1:39 AM, Luke Iannini <lukexipd@gmail.com> wrote:

Further investigation:

I grabbed 7.6.3 just to see if I somehow had a bad install of GHC, but the problem still occurred.

The problem only occurs with LLVM 3.0. 

It is not related to cross-compilation or Stephen's patches: I tested this on multiple fresh clones with --with-gcc=clang.

LLVM 3.2, 3.3 and 3.4 do not exhibit the issue.

If anyone wants to try to reproduce, you can grab the LLVM 3.0 binaries here Clang Binaries for MacOS X/x86-64 and just drop them in your path.

(Stephen, I'm now trying your patch with LLVM 3.2)

Cheers

Luke

On Sat, Aug 10, 2013 at 8:11 PM, Luke Iannini <lukexipd@gmail.com> wrote:

The first error on a fresh checkout is

"/usr/local/bin/ghc" -hisuf hi -osuf  o -hcsuf hc -static  -H32m -O  -package-db libraries/bootstrapping.conf  -hide-all-packages -i -iutils/hsc2hs/. -iutils/hsc2hs/dist/build -iutils/hsc2hs/dist/build/autogen -Iutils/hsc2hs/dist/build -Iutils/hsc2hs/dist/build/autogen     -optP-include -optPutils/hsc2hs/dist/build/autogen/cabal_macros.h -package base-4.6.0.1 -package containers-0.5.0.0 -package directory-1.2.0.1 -package filepath-1.3.0.1 -package process-1.1.0.2 -XHaskell98 -XCPP -XForeignFunctionInterface  -no-user-package-db -rtsopts      -odir utils/hsc2hs/dist/build -hid