Example Fibonacci, ExecutionEngine: JIT has not been linked

I ran this cmake script

#!/bin/sh
cmake -G "Unix Makefiles" -DLLVM_TARGETS_TO_BUILD="X86"
-DCMAKE_BUILD_TYPE="RelWithDebInfo" ../llvm

No errors.

I then ran 'make'

No errors.

I then ran 'make Fibonacci'

No errors.

Then I ran

./bin/Fibonacci

I got this error,

./bin/Fibonacci: Failed to construct ExecutionEngine: JIT has not been
linked in.

What have I done wrong?

Keith Smith