ch3: added LLVM IR code genchapter3

- Added safe wrapper around LLVM C API
- Added codegen module to emit LLVM IR for the AST
- Update the main repl loop to codegen LLVM IR

1 files changed, 2 insertions, 0 deletions

diff --git a/Cargo.toml b/Cargo.toml
index e345bab..9bcbe8b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,3 +4,5 @@ version = "0.1.0"
 edition = "2018"
 
 [dependencies]
+libc     = "0.2"
+llvm-sys = {version = "120.1", features = ["strict-versioning"]}