我在 macOS 10.15.7 上。我安装了 Golang 1.16，克隆了https://github.com/optimizely/agent存储库，cd 到其中并按照说明运行“make setup”。我收到以下错误：
mbp2a95:agent kbecker$ make setup
golangci/golangci-lint info checking GitHub for tag 'v1.19.0'
golangci/golangci-lint info found version: 1.19.0 for v1.19.0/darwin/amd64
golangci/golangci-lint info installed /Users/kbecker/go/bin/golangci-lint
go: downloading github.com/rakyll/statik v0.1.7
# runtime/cgo
In file included from cgo-builtin-prolog:1:
/usr/local/include/stddef.h:40:10: fatal error: '__config' file not found
#include <__config>
^~~~~~~~~~
1 error generated.
make: *** [setup] Error 2
有谁知道如何解决这个问题？