Add darwin arm64

Makefile

@@ -19,8 +19,8 @@ include 3rdparty.mk
 GOROOT ?= $(firstword \
  $(patsubst %,/usr/lib/go-%,\
  $(shell echo $(patsubst /usr/lib/go-%,%,$(wildcard /usr/lib/go-*)) \
-   | tr ' ' '\n' \
-   | sort -rV))\
+   | tr ' ' '\n' \
+   | sort -rV))\
  $(shell go env GOROOT))
 
 NAMESPACE := $(shell awk '/^module / {print $$2}' go.mod)
@@ -51,14 +51,15 @@ $(foreach arch,$(ARCHS),\
  $(eval _build/$(arch)/%: private export PKG_CONFIG_PATH=$(CURDIR)/_3rdparty/tgt/$(arch)/lib/pkgconfig)\
  $(eval _build/$(arch)/%: private export GOOS=\
  $(or $(if $(findstring linux,$(arch)),linux),\
-   $(if $(findstring mingw,$(arch)),windows),\
-   $(if $(findstring darwin,$(arch)),darwin),\
-   $(if $(findstring freebsd,$(arch)),freebsd),\
-   $(error Could not derive GOOS from $(arch))))\
+   $(if $(findstring mingw,$(arch)),windows),\
+   $(if $(findstring darwin,$(arch)),darwin),\
+   $(if $(findstring freebsd,$(arch)),freebsd),\
+   $(error Could not derive GOOS from $(arch))))\
  $(eval _build/$(arch)/%: private export GOARCH=\
  $(or $(if $(findstring x86_64,$(arch)),amd64),\
- $(if $(or $(findstring i386,$(arch)),$(findstring i686,$(arch))),386),\
- $(error Could not derive GOARCH from $(arch)))))
+ $(if $(findstring arm64,$(arch)),arm64),\
+ $(if $(or $(findstring i386,$(arch)),$(findstring i686,$(arch))),386),\
+ $(error Could not derive GOARCH from $(arch)))))
 
 $(if $(findstring linux,$(3rdparty_NATIVE_ARCH)),\
  $(eval unit-test: private export CC=x86_64-linux-musl-gcc)\