Merge pull request #7 from noir-lang/phated/bbwrapper-fixes

fix(wrapper): Set up CC & CXX in cargo build file

barretenberg_wrapper/build.rs

@@ -58,11 +58,13 @@ fn select_cpp_stdlib() -> &'static str {
         OS::Apple => "c++",
     }
 }
-fn set_brew_env_var(toolchain: &'static str) {
-    // The cmake file for macos uses an environment variable
-    // to figure out where to find certain programs installed via brew
+fn set_compiler(toolchain: &'static str) {
     if toolchain == INTEL_APPLE || toolchain == ARM_APPLE {
-        env::set_var("BREW_PREFIX", find_brew_prefix());
+        env::set_var("CC", format!("{}/opt/llvm/bin/clang", find_brew_prefix()));
+        env::set_var(
+            "CXX",
+            format!("{}/opt/llvm/bin/clang++", find_brew_prefix()),
+        );
     }
 }
 
@@ -90,7 +92,7 @@ fn main() {
         // TODO: We could check move this to a bash script along with
         // TODO: checks that check that all the necessary dependencies are
         // TODO installed via llvm
-        set_brew_env_var(toolchain);
+        set_compiler(toolchain);
 
         let dst = cmake::Config::new("../barretenberg")
             .very_verbose(true)