ghc-7.6.0.20120810-x86_64-windows.exe -> ghc can't figure out LLVM version

[cetinsert]

I have downloaded:

ghc: ghc-7.6.0.20120810-x86_64-windows.exe

mingw64:  http://www.drangon.org/mingw/mirror.php?num=2&fname=mingw-w64-bin-x86_64-20120807.7z

llvm64:  http://www.drangon.org/mingw/mirror.php?num=2&fname=llvm-3.1-w64-bin-x86_64-20120610.7z

my path contains:

/c/ghc/ghc-7.6.0.20120810/bin:/c/Users/Cetin/AppData/Roaming/cabal/bin:/c/llvm/bin:/c/mw64/bin

When I run:

ghc -fllvm --make Main.hs

I get:

[1 of 1] Compiling Main             ( Main.hs, Main.o )

<no location info>:
    Warning: Couldn't figure out LLVM version!
             Make sure you have installed LLVM

Attached is the output from:

ghc -v3 -fllvm --make Main.hs

for all Main.hs - it mentions:

*** LlVM CodeGen:
Error (figuring out LLVM version): : runInteractiveProcess: invalid argument (Invalid argument)

<no location info>:
    Warning: Couldn't figure out LLVM version!
             Make sure you have installed LLVM
*** LLVM Optimiser:
"" "C:\Users\Cetin\AppData\Local\Temp\ghc6036_0\ghc6036_0.ll" "-o" "C:\Users\Cetin\AppData\Local\Temp\ghc6036_0\ghc6036_0.bc" "-mem2reg" "--enable-tbaa=true"


Failed: "" "C:\Users\Cetin\AppData\Local\Temp\ghc6036_0\ghc6036_0.ll" "-o" "C:\Users\Cetin\AppData\Local\Temp\ghc6036_0\ghc6036_0.bc" "-mem2reg" "--enable-tb

[cetinsert]

checking versions of llc and opt in the same session as a -v3 compilation with ghc -fllvm

[igloo]

Thanks for the report. I've never tried to use LLVM, but GHC's built-in native-code-generator should work, so I don't think this is urgent. I've therefore milestoned it for 7.8.

[dterei]

Thanks for the report cetinsert, I'll take a look as time permits.

[shelarcy]

Windows 32 bit version causes same problem.

> ghc -info
 [("Project name","The Glorious Glasgow Haskell Compilation System")
 ,("GCC extra via C opts"," -fwrapv")
 ,("C compiler command","$topdir/../mingw/bin/gcc.exe")
 ,("C compiler flags"," -fno-stack-protector  -Wl,--hash-size=31 -Wl,--reduce-me
mory-overheads")
 ,("ar command","$topdir/../mingw/bin/ar.exe")
 ,("ar flags","q")
 ,("ar supports at file","YES")
 ,("touch command","$topdir/touchy.exe")
 ,("dllwrap command","$topdir/../mingw/bin/dllwrap.exe")
 ,("windres command","$topdir/../mingw/bin/windres.exe")
 ,("perl command","$topdir/../perl/perl.exe")
 ,("target os","OSMinGW32")
 ,("target arch","ArchX86")
 ,("target word size","4")
 ,("target has GNU nonexec stack","False")
 ,("target has .ident directive","True")
 ,("target has subsections via symbols","False")
 ,("LLVM llc command","")
 ,("LLVM opt command","")
 ,("Project version","7.6.1")
 ,("Booter version","7.4.2")
 ,("Stage","2")
 ,("Build platform","i386-unknown-mingw32")
 ,("Host platform","i386-unknown-mingw32")
 ,("Target platform","i386-unknown-mingw32")
 ,("Have interpreter","YES")
 ,("Object splitting supported","YES")
 ,("Have native code generator","YES")
 ,("Support SMP","YES")
 ,("Unregisterised","NO")
 ,("Tables next to code","YES")
 ,("RTS ways","l debug  thr thr_debug thr_l thr_p dyn debug_dyn thr_dyn thr_debu
g_dyn")
 ,("Leading underscore","YES")
 ,("Debug on","False")
 ,("LibDir","C:\\ghc\\ghc-7.6.1\\lib")
 ,("Global Package DB","C:\\ghc\\ghc-7.6.1\\lib\\package.conf.d")
 ,("Gcc Linker flags","[\"-Wl,--hash-size=31\",\"-Wl,--reduce-memory-overheads\"
]")
 ,("Ld Linker flags","[\"--hash-size=31\",\"--reduce-memory-overheads\"]")
 ]

> ghc -fllvm Main.hs
[1 of 1] Compiling Main             ( Main.hs, Main.o )

<no location info>:
    Warning: Couldn't figure out LLVM version!
             Make sure you have installed LLVM

I used GHC 7.6.1 with LLVM official site's LLVM 2.9 binary.

> llc --version
Low Level Virtual Machine (http://llvm.org/):
  llvm version 2.9
  Optimized build.
  Built Apr  6 2011 (03:41:01).
  Host: i386-pc-mingw32
  Host CPU: i686

[shelarcy]

This bug is also discussed in below thread.

*  http://www.haskell.org/pipermail/ghc-devs/2013-January/thread.html#25