'ln' 脚本有一些错误

Question

有人熟悉 etcd 项目吗？或者我们在谈论这个问题时最好忘记这个项目。问题是

$ build
ln: `gopath/src/github.com/coreos/etcd': cannot overwrite directory

当执行 build shell 内容是：

#!/bin/sh -e

if [ ! -h gopath/src/github.com/coreos/etcd ]; then
    mkdir -p gopath/src/github.com/coreos/
    ln -s ../../../.. gopath/src/github.com/coreos/etcd
fi

export GOBIN=${PWD}/bin
export GOPATH=${PWD}/gopath
export GOFMTPATH="./bench ./config ./discovery ./etcd ./error ./http ./log main.go ./metrics ./mod ./server ./store ./tests"

# Don't surprise user by formatting their codes by stealth
if [ "--fmt" = "$1" ]; then
    gofmt -s -w -l $GOFMTPATH
fi

go install github.com/coreos/etcd
go install github.com/coreos/etcd/bench

一些补充： 我的系统是windows 7
我在 git bash 上运行 shell。 问题重现：

step1: open the git bash
step2: git clone git@github.com:coreos/etcd.git
step3: cd etcd
step4: build

Answer 1

如“Git Bash Shell fails to create symbolic links”中所述（因为您在 Windows 7 上的 git bash 中使用该脚本）

msysGit 附带的ln 只是尝试复制其参数，而不是摆弄链接。这是因为链接只能（在某种程度上）在 NTFS 文件系统上工作，而 MSYS 团队不想重新实现 ln。

解决方法是从 Bash 运行 mklink。
这也允许您创建Symlink or a Junction。

因此，默认情况下，在 Git for Windows 附带的旧 shell 中，'ln' 不会按预期工作。

Answer 2

这里是解决方案。 Tbh 这是一种解决方法，但由于您使用的是 Windows，因此我看不到其他方法。

启动一个命令行，并在那里输入脚本所在的目录。应该有一个路径gopath/src/github.com/coreos/（如果没有这样的路径，你必须创建它）。接下来发出命令

mklink /D "gopath/src/github.com/coreos/etcd" "../../../../"

接下来，您应该编辑构建脚本以删除带有创建符号链接和目录的行。例如。

#!/bin/sh -e

export GOBIN=${PWD}/bin
export GOPATH=${PWD}/gopath
export GOFMTPATH="./bench ./config ./discovery ./etcd ./error ./http ./log main.go ./metrics ./mod ./server ./store ./tests"

# Don't surprise user by formatting their codes by stealth
if [ "--fmt" = "$1" ]; then
    gofmt -s -w -l $GOFMTPATH
fi

go install github.com/coreos/etcd
go install github.com/coreos/etcd/bench

请注意，我刚刚删除了 4 行代码。接下来运行脚本，这应该可以工作。

Answer 3

您不应该使用 git clone 和 build sh 脚本。使用go get 命令。例如，在 Windows 7 上，

Microsoft Windows [Version 6.1.7601]
C:\>set gopath
GOPATH=C:\gopath
C:\>go version
go version go1.3 windows/amd64
C:\>go get -v -u github.com/coreos/etcd
github.com/coreos/etcd (download)
github.com/coreos/etcd/third_party/bitbucket.org/kardianos/osext
github.com/coreos/etcd/pkg/strings
github.com/coreos/etcd/error
github.com/coreos/etcd/third_party/github.com/coreos/go-etcd/etcd
github.com/coreos/etcd/http
github.com/coreos/etcd/third_party/github.com/coreos/go-log/log
github.com/coreos/etcd/third_party/github.com/rcrowley/go-metrics
github.com/coreos/etcd/mod/dashboard/resources
github.com/coreos/etcd/log
github.com/coreos/etcd/third_party/github.com/gorilla/context
github.com/coreos/etcd/third_party/github.com/gorilla/mux
github.com/coreos/etcd/mod/dashboard
github.com/coreos/etcd/discovery
github.com/coreos/etcd/pkg/btrfs
github.com/coreos/etcd/pkg/http
github.com/coreos/etcd/third_party/code.google.com/p/gogoprotobuf/proto
github.com/coreos/etcd/mod/leader/v2
github.com/coreos/etcd/mod/lock/v2
github.com/coreos/etcd/metrics
github.com/coreos/etcd/third_party/github.com/mreiferson/go-httpclient
github.com/coreos/etcd/mod
github.com/coreos/etcd/third_party/github.com/BurntSushi/toml
github.com/coreos/etcd/third_party/github.com/goraft/raft/protobuf
github.com/coreos/etcd/third_party/github.com/goraft/raft
github.com/coreos/etcd/store
github.com/coreos/etcd/server/v1
github.com/coreos/etcd/server/v2
github.com/coreos/etcd/store/v2
github.com/coreos/etcd/server
github.com/coreos/etcd/config
github.com/coreos/etcd/etcd
github.com/coreos/etcd
C:\>