go 条件编译通过，会的同学请指点一二

[liyu4]

// +build windows

package main

import (
	"fmt"

	"syscall"
	"unsafe"
)

var kernel32 = syscall.NewLazyDLL("kernel32.dll")

var (
	procGetConsoleMode = kernel32.NewProc("GetConsoleMode")
)

// IsTerminal returns true if stderr's file descriptor is a terminal.
func IsTerminal() bool {
	fd := syscall.Stderr
	var st uint32
	r, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, uintptr(fd), uintptr(unsafe.Pointer(&st)), 0)
	return r != 0 && e == 0
}

func main() {
	fmt.Println("hello")
}

output:

→ go run main.go
# command-line-arguments
./main.go:12: undefined: syscall.NewLazyDLL
./main.go:22: too many arguments in call to syscall.Syscall

放在独立的文件里是可以被编译的，但是放在 main 函数里面怎么就不可以。实在费解，可能我理解的是错的，请会的同学指出我的错误！

→ go build -x main.go
WORK=/var/folders/68/kzwrnlkn3xzdlg8cjn2d0zm00000gp/T/go-build972181979
mkdir -p $WORK/command-line-arguments/_obj/
mkdir -p $WORK/command-line-arguments/_obj/exe/
cd /Users/admin/svn/src
/usr/local/go/pkg/tool/darwin_amd64/compile -o $WORK/command-line-arguments.a -trimpath $WORK -p main -complete -buildid 37d5bca645f83d38f58c4de37fe5df48c9ced803 -D _/Users/admin/svn/src -I $WORK -pack ./main.go
# command-line-arguments
./main.go:12: undefined: syscall.NewLazyDLL
./main.go:22: too many arguments in call to syscall.Syscall

[defia]

run 就直接 run 这个文件了吧 go build 才会忽略这个

[liyu4]

@defia go build 也是报这个错误