diff --git a/common.sh b/common.sh
index 285acf3..dd9154e 100755
--- a/common.sh
+++ b/common.sh
@@ -91,6 +91,22 @@ function ensure_brew_binary() {
   check_binary "$1"
 }
 
+function ensure_brew_keg_binary() {
+  local formula_prefix
+
+  if command -v "$1" >/dev/null 2>&1; then
+    return
+  fi
+
+  check_binary brew
+  formula_prefix=$(brew --prefix "$2")
+  if [ ! -x "${formula_prefix}/bin/$1" ]; then
+    brew install "$2"
+  fi
+  export PATH="${formula_prefix}/bin:${PATH}"
+  check_binary "$1"
+}
+
 export PATH="${HOME}/.local/bin:${PATH}"
 
 for BINARY in "${NVIM_REQUIRED_BINARIES[@]}"; do
@@ -108,9 +124,13 @@ fi
 check_binary luafmt
 
 if [ "${NVIM_OS}" = "macOS" ]; then
+  ensure_brew_binary cppcheck cppcheck
   ensure_brew_binary pwsh powershell
   ensure_brew_binary vala-language-server vala-language-server
+  ensure_brew_keg_binary clang-tidy llvm
 fi
+check_binary clang-tidy
+check_binary cppcheck
 
 pushd "${SCRIPT_DIR}" 1>/dev/null 2>&1 || error_exit "failed to push: ${SCRIPT_DIR}"
 FNAME=cpptools-${NVIM_OS}-${NVIM_ARCH2}.vsix