From ebbe6e5af8d35c6f55847e83c48a4bebf3372ead Mon Sep 17 00:00:00 2001
From: Maciej <197044+suside@users.noreply.github.com>
Date: Mon, 13 Nov 2023 08:51:46 +0100
Subject: [PATCH] fix: helpful message when llama.cpp submodule is not present
 (#719) (#775)

---
 crates/llama-cpp-bindings/build.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/crates/llama-cpp-bindings/build.rs b/crates/llama-cpp-bindings/build.rs
index 3c924ee..488df00 100644
--- a/crates/llama-cpp-bindings/build.rs
+++ b/crates/llama-cpp-bindings/build.rs
@@ -1,6 +1,15 @@
+use std::path::Path;
+
 use cmake::Config;
 
 fn main() {
+    const LLAMA_CMAKE_PATH: &str = "llama.cpp/CMakeLists.txt";
+
+    assert!(
+        Path::new(LLAMA_CMAKE_PATH).exists(),
+        "Please init submodules with `git submodule update --init --recursive` and try again"
+    );
+
     println!("cargo:rerun-if-changed=cc/*.h");
     println!("cargo:rerun-if-changed=cc/*.cc");
     println!("cargo:rustc-link-lib=llama");