英文:
go - Instructions for installing from the ubuntu ppa
问题
我已经使用Go语言ppa为Ubuntu安装了golang-stable。
官方安装说明似乎忽略了这个选项，并且没有提到它。
我的问题是：有人知道在使用sudo apt-get安装这个软件包之后是否还需要其他操作吗？特别是，我是否需要手动设置任何环境变量？
我问这个问题是因为我能够“go get”Go-SDL，但是当我尝试执行它的测试时，我得到以下错误：
$ ./test
panic: No such environment variable: GOPATH
这有点让我困惑。那个变量不应该已经初始化了吗？特别是考虑到我已经能够编译和安装一个库。
英文:
I've installed golang-stable using the Go Language ppa for Ubuntu.
The Official Installation Instructions seem to ignore this option, and don't mention it at all.
My question is: does anyone know if anything else is needed after doing the sudo apt-get for this package? In particular, do I have to manually set any environment variables?
I'm asking because I've been able to "go get" Go-SDL, but when I try to execute its test I get the following error:
$ ./test
panic: No such environment variable: GOPATH
This kind of confuses me. Shouldn't that variable be initialized already? Especially given that I have been able to compile and install a library.
答案1
得分: 5
你在/usr/lib/go/bin/安装的go命令内部包含一个默认路径，如果环境变量GOPATH不存在，则使用该默认路径。在Ubuntu软件包的情况下，该默认路径指向/usr/lib/go。因此，Go-SDL的安装目录位于/usr/lib/go/src的某个位置。以这种方式安装Go-SDL需要root权限。
我建议您按照http://golang.org/doc/code.html中的说明设置GOPATH，然后重新安装Go-SDL。例如：
# 从/usr/lib/go卸载Go-SDL
sudo go clean -i github.com/0xe2-0x9a-0x9b/Go-SDL/...
# 设置GOPATH
mkdir -p $HOME/go/src
export GOPATH=$HOME/go
# 将Go-SDL安装到$GOPATH
go get -v github.com/0xe2-0x9a-0x9b/Go-SDL/...
github.com/0xe2-0x9a-0x9b/Go-SDL中的test需要知道GOPATH以查找一些资源文件（基于https://stackoverflow.com/questions/9443418/how-to-access-resource-files-after-the-go-tool-installed-the-executable）。
英文:
The go command that you installed in /usr/lib/go/bin/ internally contains a default path that is used if the environment variable GOPATH is missing. In case of the Ubuntu package this default path points to /usr/lib/go. Thus the installation directory for Go-SDL is somewhere in /usr/lib/go/src. Installing Go-SDL in this way requires root priviledges.
I recommend you setup GOPATH as described in http://golang.org/doc/code.html and reinstall Go-SDL. For example:
# Uninstall Go-SDL from /usr/lib/go
sudo go clean -i github.com/0xe2-0x9a-0x9b/Go-SDL/...
# Setup GOPATH
mkdir -p $HOME/go/src
export GOPATH=$HOME/go
# Install Go-SDL into $GOPATH
go get -v github.com/0xe2-0x9a-0x9b/Go-SDL/...
The test from github.com/0xe2-0x9a-0x9b/Go-SDL needs to know GOPATH to find some resource files (based on https://stackoverflow.com/questions/9443418/how-to-access-resource-files-after-the-go-tool-installed-the-executable).
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