php7.3.2报错

macOS最新版，环境php7.3.2，go1.9.2

```bash
$ PHPCFG=/usr/local/Cellar/php/7.3.2/bin/php-config make
```
然后报错：
```
go install ./zend
# github.com/zywaited/php-go/zend
zend/typeconv.go:31:26: could not determine kind of name for C.IS_CONSTANT
make: *** [all] Error 2
```