Head fails on MacOS

[nl5887]

Expected behaviour

mc banner

Actual behaviour

$ go run main.go
signal: killed

Steps to reproduce the behaviour

Just checkout minio/mc latest and go run main.go

mc version

9a88156

System information

MacOS

Darwin MacBook-Pro.local 16.5.0 Darwin Kernel Version 16.5.0: Fri Mar 3 16:52:33 PST 2017; root:xnu-3789.51.2~3/RELEASE_X86_64 x86_64 i386 MacBookPro13,1 Darwin

Killed is mostly an out of memory error, caused by something recursive. Dee confirmed this issue on her notebook as well.

[deekoder]

Yes this is repros for me on my mac as well when i do go get.

[deekoder]

$ mc --help
Killed: 9

[harshavardhana]

This is upstream golang bug with xcode 8.3

golang/go#19734

[deekoder]

Ok i installed xcode8.3 and then did this go version

$ go version 
go1.7.5 darwin/amd64
$ go build -ldflags=-s main.go
$ mc
Killed: 9

[deekoder]

ok so this works.

$ go version 
go1.7.5 darwin/amd64
$ go build -ldflags=-s 
$ ./mc

[badscooter23]

This is a nasty problem when it comes up... brew doctor will encourage you to update to a new version of xcode and then you rung into this issue...

I am not sure I completely understand your workaround (right now I am just postponing the xcode update to make sure I don't get the problem)...

normally I doe a make to build minio and/or mc...

Can you be more clear on how to get around the problem?
Do we need to modify the Makefile with different -ldflags? Or do we need to not use make and do an explicit go build?

I am just unclear on what you are saying the workaround is (and the problem is debilitating if it comes up).

I think we just need to write up a really clear work around for this... that hopefully

• works with go 1.7.5
• works with latest xcode
• allows developer to do a make to build mc
• doesn't get the Killed: 9 issue

(I am getting around this be not upgrading xcode right now)

The other related thing is that minio and mc both requires go 1.7.5 (not 1.8) and brew really wants to install 1.8 (which breaks everything). If you don't already have 1.7.5 installed and you use brew you will get 1.8 which messes things up ... unless you do a few things to explicitly install and use 1.7.5. It is something like:

brew install go 1.7
(which will actually install 1.7.5)

your GO env vars will be all screwed up...

So I set up things like this in .bash_profile file

/# set up env variables for go
export GOPATH=${HOME}/go
export GOVERSION=$(brew list go@1.7 | head -n 1 | cut -d '/' -f 6)
export GOROOT=$(brew --prefix)/Cellar/go@1.7/${GOVERSION}/libexec

export PATH=${GOPATH}/bin:$PATH

(this is different that what it says to do in the mini docs...)

If you have installed go 1.8 and want to go backwards to 1.7.5 you have to force this ...
i forget the exact brew command I had to do ... (and I didn't write it down)