Building from src on a Mac

Not sure why configure script couldn't figure out version of llvm I have:

checking for llc-3.7... no
checking for llc... /usr/local/bin/llc
checking /usr/local/bin/llc is version 3.7... no
checking for opt-3.7... no
checking for opt... /usr/local/bin/opt
checking /usr/local/bin/opt is version 3.7... no
./configure: line 7717: test: too many arguments
./configure: line 7765: test: too many arguments
checking whether bootstrap compiler is affected by bug 9439...
<no location info>:
Warning: Couldn't figure out LLVM version!
Make sure you have installed LLVM
ghc: could not execute: , (
failed to compile

bash-3.2$ llc --version
LLVM (http://llvm.org/):
LLVM version 3.5.1
Optimized build with assertions.
Built Jan 16 2015 (03:07:02).
Default target: x86_64-apple-darwin15.2.0
Host CPU: corei7

Registered Targets:
x86 - 32-bit X86: Pentium-Pro and above
x86-64 - 64-bit X86: EM64T and AMD64
bash-3.2$ opt --version
LLVM (http://llvm.org/):
LLVM version 3.5.1
Optimized build with assertions.
Built Jan 16 2015 (03:07:02).
Default target: x86_64-apple-darwin15.2.0
Host CPU: corei7

On Wed, Jan 13, 2016 at 11:43 AM, Ben Gamari <ben@well-typed.com> wrote:

The GHC Team is very pleased to announce the first release candidate of
the Glasgow Haskell Compiler 8.0.1 release. Source and binary
distributions as well as the newly revised users guide can be found at

http://downloads.haskell.org/~ghc/8.0.1-rc1/

This is the first in a series of release candidates which will allow us
to get wider testing of the significant changes that have occurred since
the 7.10 series. These include,

* the TypeInType extension, which unifies types and kinds allowing for
promotion of more Haskell constructs to the type-level

* the introduction of type application in source programs

* support for recursive superclass relationships

* support for Applicative do notation

* introduction of the DuplicateRecordFields language extension

* a rewritten and substantially more thorough pattern match checker

* the introduction of injective type classes

* introduction of the Strict and StrictData language extensions,
allowing modules to be compiled with strict-by-default evaluation
of bindings

* the ability to run the GHCi interpreter in a separate process,
allowing a callstacks in GHCi, easier integration with tooling, and
more

and much more.

Changes of this magnitude will invariably bring bugs. This release
candidate in particular is known to suffer from a few significant issues
which are being actively worked upon,

* The new -XInjectiveTypeFamilies language extension will likely be
renamed to -XTypeFamilyDependencies

* #11120: Type representations are missing for some types and promoted
constructors

* #11334: Solving for Typeable (Proxy :: Proxy 'Compose) fails

* #11276: Pattern checker performance can degrade significantly in
presence of pattern matches with guards

* #11405: Type-level skolem-escape check fails incorrectly

* #11414: Use of -XStrict results in compiler abort

* #11379: Instance solver fails to terminate

* #11419: Haddock documentation is currently not included in the binary
distributions (and hence is missing on downloads.haskell.org)

* #11370: -Wredundant-constraints being included in -Wall breaks
the three-release compatibility policy

In the coming weeks we will continue to iterate on these issues. We will
also look at Trac tickets marked with "highest" priority on the release
status page [2].

If you have a ticket that you would like to see addressed that does not
meet one of these criteria, please bring this to our attention.
Likewise, if you encounter an issue please open a ticket if one does not
already exist.

Also note that we currently cannot offer 32-bit Windows builds due to
breaking changing in a recent Windows 10 upgrade. We'll work to
resolve this before the 8.0 release but please let us know if this poses
a significant problem for you.

Cheers,

- Ben

[1] https://cygwin.com/ml/cygwin/2015-12/msg00003.htm
[2] https://ghc.haskell.org/trac/ghc/wiki/Status/GHC-8.0.1

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