Hi, I am not able to compile dale on my Ubuntu system. Do you have a sense of what might be the issue? Here are the configuration details:

-- The C compiler identification is GNU 7.3.0
-- The CXX compiler identification is GNU 7.3.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
fatal: not a git repository (or any of the parent directories): .git
-- LLVM version: 6.0.0
-- LLVM version major: 6
-- LLVM version minor: 0
-- System name: Linux
-- System processor: x86_64
-- System version: 4.15.0-32-generic
-- Found PkgConfig: /usr/bin/pkg-config (found version "0.29.1")
-- Checking for one of the modules 'libffi'
-- Build type: RELEASE
-- Configuring done
-- Generating done

And here is the error:

dalec: /usr/lib/llvm-6.0/include/llvm/Support/Casting.h:106: static bool llvm::isa_impl_cl<To, const From*>::doit(const From*) [with To = llvm::PointerType; From = llvm::Type]: Assertion `Val && "isa<> used on a null pointer"' failed.