make : fix missing -O3

ggerganov · ggerganov · commit 0a55a70b9b9d · 2024-06-26T21:21:12.000+03:00
same as ggml-org/llama.cpp#8143
diff --git a/Makefile b/Makefile
@@ -251,7 +251,10 @@ ifdef WHISPER_DEBUG
 		MK_CPPFLAGS += -D_GLIBCXX_ASSERTIONS
 	endif
 else
-	MK_CPPFLAGS += -DNDEBUG
+	MK_CPPFLAGS   += -DNDEBUG
+	MK_CFLAGS     += -O3
+	MK_CXXFLAGS   += -O3
+	MK_NVCCFLAGS  += -O3
 endif
 
 ifdef WHISPER_SANITIZE_THREAD
