gb build failed for go1.5

[linuxerwang]

I upgraded to go1.5, rebuilt the whole gb pkg/cmds, and "gb build" gave error:

FATAL command "build" failed: fork/exec /usr/share/go-golang/pkg/tool/linux_amd64/6g: no such file or directory

Also tried to rebuild gb with build tag (I know it's redundant):

go install --tags 'go1.5' github.com/constabulary/gb/cmd/gb
go install --tags 'go1.5' github.com/constabulary/gb/cmd/gb-vendor

But still "gb build" failed with the above error.

Thanks.

[davecheney]

It's likely that gb didn't get rebuilt, you can try adding the -v flag to go install, and seeing if it's actually doing anything.

Personally, I recommend removing $GOPATH/pkg and running go install -v .../cmd/gb

[linuxerwang]

Same issue. I even manually deleted .a and binary.

rm -rf pkg/linux_amd64/github.com/constabulary/gb/*
rm -rf bin/gb*
go install -v .../cmd/gb
go install -v .../cmd/gb-vendor

[davecheney]

Are you saying that go install did nothing ? Can you please include the
full output of what you see ?

On Sun, Aug 23, 2015 at 4:07 PM, linuxerwang notifications@github.com
wrote:

Same issue. I even manually deleted .a and binary.

rm -rf pkg/linux_amd64/github.com/constabulary/gb/*
rm -rf bin/gb*
go install -v .../cmd/gb
go install -v .../cmd/gb-vendor

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Reply to this email directly or view it on GitHub
#319 (comment).

[davecheney]

/usr/share/go-golang/pkg/tool/linux_amd64/6g is not a common installation path for Go. Where did you get this go install from ? Do you or have you set GOROOT ? If so, please do not, and repeat the procedure.

[davecheney]

Can you please include the ouput of which go, is it the version you expect ?

[linuxerwang]

gb and gb-vendor were installed correctly, I can run "gb vendor fetch" without problem. The problem is when running "gb build".

I build my go1.5 from source code. And there is no 6g under /usr/share/go-golang/pkg/tool/linux_amd64/6g. I think go1.5 removed all 6g/6l etc. according to the release notes: https://golang.org/doc/go1.5#compiler_and_tools

No I did not set GOROOT.

[davecheney]

Thank you for confirming. My suspicion is that your go installation is not correct, and that incorrect value is being encoded into gb when it is compiled (because it must know this value to know where to find the compiler).

The fact that gb is using the go 1.4 behavior (looking for 6g, not compile) also lead me to believe that the go installation on your computer is not correct.

How have you installed go ? If you uninstall go and then issue go, does it suceed ? What are the values on your $PATH ?

[linuxerwang]

I downloaded the go1.5 source tarball, set GOROOT and GOROOT_FINAL to /usr/share/go-golang; compile the source with all.bash; the copy the whole source folder to /usr/share/go-golang; then create a symbol link /usr/bin/go to /usr/share/go-golang/bin/go.

user@host:/usr/share/go-golang$ tree -L 1
.
├── api
├── AUTHORS
├── bin
├── CONTRIBUTING.md
├── CONTRIBUTORS
├── doc
├── favicon.ico
├── lib
├── LICENSE
├── misc
├── PATENTS
├── pkg
├── README.md
├── robots.txt
├── src
├── test
└── VERSION

Thanks.

[linuxerwang]

And go env output:

$ go env
GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/me/go"
GORACE=""
GOROOT="/usr/share/go-golang"
GOTOOLDIR="/usr/share/go-golang/pkg/tool/linux_amd64"
GO15VENDOREXPERIMENT=""
CC="gcc"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0"
CXX="g++"
CGO_ENABLED="1"

$ go version
go version go1.5 linux/amd64

[davecheney]

Why would you do this ? Just download the binary tarball from the Go website and unpack it to the recommended location. This binary tarball is very well tested and known to work.

If you do wish to compile from source, my strongest recommendation is to not set GOROOT and compile to a directory owned by your user. I outline the procedure here.

http://dave.cheney.net/2014/09/13/how-to-install-multiple-versions

I recommend following the advice outlined above and expect that this will resolve your problem installing gb.

[linuxerwang]

Still not working for me.

a). I rebuilt go from source. This time I didn't set any GOROOT paths. I untar source code to /home/tools/go-go1.5, built there, put bin in path. Removed pkg/ bin/ for gb. Generated gb and gb-vendor. "gb build" failed the same way.

$ /home/tools/go-go1.5/bin/go env
GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/me/go"
GORACE=""
GOROOT="/home/tools/go-go1.5"
GOTOOLDIR="/home/tools/go-go1.5/pkg/tool/linux_amd64"
GO15VENDOREXPERIMENT=""
CC="gcc"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0"
CXX="g++"
CGO_ENABLED="1"

b) I downloaded the prebuilt go tarball from golang.org. Note that it needs to be extracted to /usr/local/go. Repeated the above steps, "gb build" failed the same way.

$ /usr/local/go/bin/go env
GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/me/go"
GORACE=""
GOROOT="/usr/local/go"
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GO15VENDOREXPERIMENT=""
CC="gcc"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0"
CXX="g++"
CGO_ENABLED="1"

[linuxerwang]

I have to go to bed now. But please let me know if anything else I should do to figure out the problem. Thanks.

[davecheney]

I'm sorry I haven't been able to fix it for you. Can you please confirm the modification time on your gb binary. Are you sure it is being rebuilt, are you sure that is the version that is being executed in your path ?

I added a check to gb in 34bdc62 that should fail if the version of Go that build gb does not match the version of Go that is installed. Can you please try

 go get -u github.com/constabulary/gb/...

To download the latest version.

[linuxerwang]

The last look before go to bed. You are right! Didn't remember when I copied gb/gb-vendor to /usr/bin. That gave me a hard time. It's totally my fault.

Thank you so much, Dave.

[davecheney]

You're welcome, I'm glad you were able to find the problem.