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2.2.2 最后的代码 #446

@icaiyu

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@icaiyu

原来的代码如下

package main

/*
#cgo windows CFLAGS: -DCGO_OS_WINDOWS=1
#cgo darwin CFLAGS: -DCGO_OS_DARWIN=1
#cgo linux CFLAGS: -DCGO_OS_LINUX=1

#if defined(CGO_OS_WINDOWS)
    const char* os = "windows";
#elif defined(CGO_OS_DARWIN)
    static const char* os = "darwin";
#elif defined(CGO_OS_LINUX)
    static const char* os = "linux";
#else
#    error(unknown os)
#endif
*/
import "C"

func main() {
    print(C.GoString(C.os))
}

建议把 static const char* os = "darwin"; 和static const char* os = "linux"; 的 static去掉,否则会有错误,cgo可以调用static函数,但是无法读取static变量

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