From 0e01f06caf942502fa402a95e79c42faa0597cdf Mon Sep 17 00:00:00 2001
From: Richard Ramos <info@richardramos.me>
Date: Wed, 6 Oct 2021 09:13:02 -0400
Subject: [PATCH] add m1 support

---
 Makefile | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 5222062..ddb90fd 100644
--- a/Makefile
+++ b/Makefile
@@ -10,6 +10,10 @@ endif
 
 ifeq ($(detected_OS),Darwin)
  LIB_EXT := dylib
+ ifeq ("$(shell sysctl -nq hw.optional.arm64)","1")
+  # Building on M1 is still not supported, so in the meantime we crosscompile to amd64
+  CGOFLAGS=CGO_ENABLED=1 GOOS=darwin GOARCH=amd64
+ endif
 else ifeq ($(detected_OS),Windows)
  LIB_EXT:= dll
  LIBKEYCARD_EXT := dll
@@ -20,6 +24,6 @@ endif
 build-lib:
 	mkdir -p $(BUILD)/libkeycard
 	@echo "Building static library..."
-	go build -buildmode=c-shared -o $(BUILD)/libkeycard/libkeycard.$(LIB_EXT) .
+	$(CGOFLAGS) go build -buildmode=c-shared -o $(BUILD)/libkeycard/libkeycard.$(LIB_EXT) .
 	@echo "Static library built:"
 	@ls -la $(BUILD)/libkeycard/*