_cgo_export.c:3:10：致命错误：升级到 mac OS Big Sur 后在 VS Code 中运行 go test 时找不到“stdlib.h”文件

Question

我正在尝试从

通过测试学习 go 来学习 

select 语句。在此之前，我将 macOS 升级到 Big Sur 版本 11.4。现在我尝试在 VS Code 中运行以下测试。

package racer
import(
    "time"
    "net/http"
)

//Racer ...
func Racer(a,b string)(winner string){
    startA :=time.Now()
    http.Get(a)
    Aduration:=time.Since(startA)
    startB :=time.Now()
    http.Get(b)
    Bduration:=time.Since(startB)
    if Aduration < Bduration{
        return a
    }
    return b
}

测试是

package racer
import(
    "time"
    "net/http"
)

//Racer ...
func Racer(a,b string)(winner string){
    startA :=time.Now()
    http.Get(a)
    Aduration:=time.Since(startA)
    startB :=time.Now()
    http.Get(b)
    Bduration:=time.Since(startB)
    if Aduration < Bduration{
        return a
    }
    return b
}

这是我的环境

GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/user_name/Library/Caches/go-build"
GOENV="/Users/user_name/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOINSECURE=""
GOMODCACHE="/Users/user_name/go/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/user_name/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64"
GOVCS=""
GOVERSION="go1.16.4"
GCCGO="gccgo"
AR="/Users/user_name/opt/anaconda3/bin/x86_64-apple-darwin13.4.0-ar"
CC="x86_64-apple-darwin13.4.0-clang"
CXX="x86_64-apple-darwin13.4.0-clang++"
CGO_ENABLED="1"
GOMOD="/dev/null"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -arch x86_64 -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/zc/4r25vdyj4cv3ynjx64633ly40000gn/T/go-build3724662099=/tmp/go-build -gno-record-gcc-switches -fno-common"

当我尝试使用

go test

 运行此测试时，它返回一个错误，提示 

runtime/cgo ld: unsupported tapi file type '!tapi-tbd' in YAML file '/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/lib/libpthread.tbd' for architecture x86_64 clang-10: error: linker command failed with exit code 1 (use -v to see invocation)

在进行了一些在线研究后，我使用

sudo rm -rf /Library/Developer/CommandLineTools

删除了命令行工具，我重新启动了系统，出现了一个弹出窗口，要求我再次下载命令行工具。我安装了它们。当我尝试使用 

go test

 再次测试代码时，它返回错误 

runtime/cgo _cgo_export.c:3:10: fatal error: 'stdlib.h' file not found

。我做了 

xcode-select --install

 但它已经安装了。升级之前我没有遇到任何这些问题。升级后可能会有一些变化。我可以得到一些帮助来解决这个问题吗？

Answer 1

sudo ln -s /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include /usr/include

Answer 2

尝试将 SDKROOT 显式设置为系统 SDK：

export SDKROOT=$(xcrun --sdk macosx --show-sdk-path)