I was testing GoMobile tools in Go[1.12.9 windows/amd64] ,and tried to build the example projects that come with it into an Android Apk.
On pointing the build to the package directory and running the build command, the console gave a cannot find package error. How can the Go package be recognised?
[NOTE- I tried installing and using GoMobile tools,but they were also not recognised,I could only download them as a Git package via VSCode ]
PS D:\Script\Golang\bin> go version
go version go1.12.9 windows/amd64
PS D:\Script\Golang\src\golang.org\x\mobile\example\basic> gci
Directory: D:\Script\Golang\src\golang.org\x\mobile\example\basic
Mode LastWriteTime Length Name
---- ------------- ------ ----
-a---- 18-08-2019 11:27 4618 main.go
-a---- 18-08-2019 11:27 225 main_x.go
PS D:\Script\Golang\src\golang.org\x\mobile\example\basic> cd D:\Script\Golang\bin
PS D:\Script\Golang\bin> .\gomobile.exe build D:\Script\Golang\src\golang.org\x\mobile\example\basic
D:\Script\Golang\bin\gomobile.exe: cannot find package "D:\\Script\\Golang\\src\\golang.org\\x\\mobile\\example\\basic" in any of:
c:\go\src\D:\Script\Golang\src\golang.org\x\mobile\example\basic (from $GOROOT)
D:\Script\Golang\src\D:\Script\Golang\src\golang.org\x\mobile\example\basic (from $GOPATH)
S D:\Script\Golang\bin> .\gomobile.exe build "D:\Script\Golang\src\golang.org\x\mobile\example\basic"
D:\Script\Golang\bin\gomobile.exe: cannot find package "D:\\Script\\Golang\\src\\golang.org\\x\\mobile\\example\\basic" in any of:
c:\go\src\D:\Script\Golang\src\golang.org\x\mobile\example\basic (from $GOROOT)
D:\Script\Golang\src\D:\Script\Golang\src\golang.org\x\mobile\example\basic (from $GOPATH)
Go takes path references with respect to the GOPATH or GOROOT path's provided in environment/system variables.It looks into the "src" directory in the GOPATH/GOROOT for the package .This means providing absolute package path will not work.
- Example(the above case )
GOPATH = D:\Script\Golang
GOROOT = C:\go
Absolute Package path = D:\Script\Golang\src\golang.org\x\mobile\example\basic
In this case, providing absolute package path will be read as
GOPATH\D:\Script\Golang\src\golang.org\x\mobile\example\basic
or GOROOT\D:\Script\Golang\src\golang.org\x\mobile\example\basic
As golang uses GOPATH or GOROOT as reference , the package path should be
GOPATH\golang.org\x\mobile\example\basic
Golang automatically will use the reference GOPATH in the environment variables and append to it the path which comes after it.
So in the above case,the package path provided would be -
PS D:\Script\Golang\bin> .\gomobile.exe build golang.org\x\mobile\example\basic
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