GHC fails to configure on MacOS if Cuda is installed

Hello,

I had the following issue trying to build ghc (indirectly via stack)

[error] Running /usr/bin/make install in directory /Users/nehal/.stack/programs/x86_64-osx/ghc-8.0.2.temp/ghc-8.0.2/ exited with ExitFailure 2


mk/config.mk:521: *** missing separator.  Stop.

@(Stack/Setup.hs:991:21)
2017-10-16 07:16:01.831719: [error]
Error: Error encountered while installing GHC with
         make install
         run in /Users/nehal/.stack/programs/x86_64-osx/ghc-8.0.2.temp/ghc-8.0.2/

Here is the line from mk/config.mk:521:

519  WhatGccIsCalled       = /usr/bin/gcc
520  GccVersion            = 9.0.0
521  8.0
522  ifeq "$(phase)" "0" 
...

output from gcc:

nehal$ gcc -v
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 9.0.0 (clang-900.0.37)
Target: x86_64-apple-darwin16.7.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
Found CUDA installation: /usr/local/cuda, version 8.0

It looks like the version detection is getting confused by the cuda installation (and so is thinking the version is something like "9.0.0\n8.0")

This could be something for further upstream (e.g. autotools mainainters), but I'm just rebooting my "try to grok Haskell" efforts, so I am going to take the lazy approach and report it here....

Thanks for ghc!

(downstream bug report is here: https://github.com/commercialhaskell/stack/issues/1582#issuecomment-346917482 -- two others have hit this in the past month or so)

Trac metadata

Trac field	Value
Version	8.0.2
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Build System
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