duanli12176 2016-05-13 20:34
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为什么不能从绝对路径进行构建?

For some reason, I want to build a go project (docker swarm) from source, following the official doc.

It works well if I do:

...
cd $GOPATH/src/github.com/docker/swarm
go install .

But it fails if I try to "one-line" it and avoid cd:

go install $GOPATH/src/github.com/docker/swarm

ERROR: can't load package: 
package <my go path>/src/github.com/docker/swarm: 
import "<my go path>/src/github.com/docker/swarm": 
cannot import absolute path

Why can't go deal with this absolute path?

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  • dongya4335 2016-05-13 21:16
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    JimB is correct, packages are relative to the import path. There is no capability to import 'absolutely'.

    While it is not spelled out specifically in the spec, it does allude to it at https://golang.org/ref/spec#ImportPath:

    The interpretation of the ImportPath is implementation-dependent but it is typically a substring of the full file name of the compiled package and may be relative to a repository of installed packages.

    There are variations on relative importing and vendoring that might work for you (see GO 1.5 vendoring experiment, now available in 1.6 https://docs.google.com/document/d/1Bz5-UB7g2uPBdOx-rw5t9MxJwkfpx90cqG9AFL0JAYo/edit?pref=2&pli=1)

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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