From 67f12ce0e1e7b03cfa1da35d9f30664e97155a2d Mon Sep 17 00:00:00 2001
From: jhen <developer@jhen.me>
Date: Fri, 11 Aug 2023 07:03:32 +0800
Subject: [PATCH] fix: use LM_GGML_USE_METAL to check ggml-metal not enabled

---
 ios/RNLlamaContext.mm | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/ios/RNLlamaContext.mm b/ios/RNLlamaContext.mm
index 2a279dc2..d01f168f 100644
--- a/ios/RNLlamaContext.mm
+++ b/ios/RNLlamaContext.mm
@@ -20,6 +20,7 @@ + (instancetype)initWithParams:(NSDictionary *)params {
     NSString *reasonNoMetal = @"";
     defaultParams.n_gpu_layers = 0;
     if (params[@"n_gpu_layers"] && [params[@"n_gpu_layers"] intValue] > 0) {
+#ifdef LM_GGML_USE_METAL
         // Check ggml-metal availability
         NSError * error = nil;
         id<MTLDevice> device = MTLCreateSystemDefaultDevice();
@@ -43,6 +44,10 @@ + (instancetype)initWithParams:(NSDictionary *)params {
             }
         }
         device = nil;
+#else
+        reasonNoMetal = @"Metal is not enabled in this build";
+        isMetalEnabled = false;
+#endif
     }
     if (params[@"n_batch"]) defaultParams.n_batch = [params[@"n_batch"] intValue];
     if (params[@"use_mmap"]) defaultParams.use_mmap = [params[@"use_mmap"] boolValue];