From 4bab8cb243d083c79f79068f6c74cae6abb28349 Mon Sep 17 00:00:00 2001
From: david raistrick <keen99@users.noreply.github.com>
Date: Wed, 29 Mar 2023 20:31:18 -0400
Subject: [PATCH] fix darwin f16c flags check

...there was no check.  ported upstream from https://github.com/zanussbaum/gpt4all.cpp/pull/2 (I dont see any clean path for upstream patches)
---
 Makefile | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 9cfa89f7a..83a4514ef 100644
--- a/Makefile
+++ b/Makefile
@@ -71,7 +71,10 @@ endif
 #       feel free to update the Makefile for your architecture and send a pull request or issue
 ifeq ($(UNAME_M),$(filter $(UNAME_M),x86_64 i686))
 	ifeq ($(UNAME_S),Darwin)
-		CFLAGS += -mf16c
+		F16C_M := $(shell sysctl machdep.cpu.features)
+		ifneq (,$(findstring F16C,$(F16C_M)))
+		    CFLAGS += -mf16c
+		endif
 		AVX1_M := $(shell sysctl machdep.cpu.features)
 		ifneq (,$(findstring FMA,$(AVX1_M)))
 			CFLAGS += -mfma