mac解决//go:linkname must refer to declared function or variable

1、系统及原因

系统：macbook pro

go build -v
报错

golang.org/x/sys/unix
# golang.org/x/sys/unix
../../pkg/mod/golang.org/x/sys@v0.0.0-20200930185726-fdedc70b468f/unix/syscall_darwin.1_13.go:29:3: //go:linkname must refer to declared function or variable
../../pkg/mod/golang.org/x/sys@v0.0.0-20200930185726-fdedc70b468f/unix/zsyscall_darwin_amd64.1_13.go:27:3: //go:linkname must refer to declared function or variable
../../pkg/mod/golang.org/x/sys@v0.0.0-20200930185726-fdedc70b468f/unix/zsyscall_darwin_amd64.1_13.go:40:3: //go:linkname must refer to declared function or variable
../../pkg/mod/golang.org/x/sys@v0.0.0-20200930185726-fdedc70b468f/unix/zsyscall_darwin_amd64.go:28:3: //go:linkname must refer to declared function or variable
../../pkg/mod/golang.org/x/sys@v0.0.0-20200930185726-fdedc70b468f/unix/zsyscall_darwin_amd64.go:43:3: //go:linkname must refer to declared function or variable
../../pkg/mod/golang.org/x/sys@v0.0.0-20200930185726-fdedc70b468f/unix/zsyscall_darwin_amd64.go:59:3: //go:linkname must refer to declared function or variable
../../pkg/mod/golang.org/x/sys@v0.0.0-20200930185726-fdedc70b468f/unix/zsyscall_darwin_amd64.go:75:3: //go:linkname must refer to declared function or variable
../../pkg/mod/golang.org/x/sys@v0.0.0-20200930185726-fdedc70b468f/unix/zsyscall_darwin_amd64.go:90:3: //go:linkname must refer to declared function or variable
../../pkg/mod/golang.org/x/sys@v0.0.0-20200930185726-fdedc70b468f/unix/zsyscall_darwin_amd64.go:105:3: //go:linkname must refer to declared function or variable
../../pkg/mod/golang.org/x/sys@v0.0.0-20200930185726-fdedc70b468f/unix/zsyscall_darwin_amd64.go:121:3: //go:linkname must refer to declared function or variable
../../pkg/mod/golang.org/x/sys@v0.0.0-20200930185726-fdedc70b468f/unix/zsyscall_darwin_amd64.go:121:3: too many errors

这是由旧版本的golang.org/x/sys引起的

2、解决方法

go get -u golang.org/x/sys