Compiling

You will need to install Go 1.9 or later.

Then, make sure to set up your GOPATH properly, eg. here is mine:

export GOPATH=${HOME}/go:${HOME}/src/lczero-client

Here, I've set my system install of go as the first entry, and then the lczero-client directory as the second.

Pre-reqs:

# (Bug workaround, using Tilps instead)
# go get -u github.com/notnil/chess
go get -u github.com/Tilps/chess
go get -u github.com/nightlyone/lockfile

Pull or download the master branch

Then to produce a lczero-client executable: go build lc0_main.go for the lc0 client

If you get .\lc0_main.go:1048:5: undefined: chess.GetLibraryVersion you have a cached old version of Tilps/chess and need to run the Pre-reqs again.

Running

First copy the lc0 executable into the same folder as the lczero-client executable.

Then, run! Username and password are required parameters.

./lczero-client --user=myusername --password=mypassword

For testing, you can also point the client at a different server:

./lczero-client --hostname=http://127.0.0.1:8080 --user=test --password=asdf

Cross-compiling

One of the main reasons I picked go was it's amazing support for cross-compiling.

Pre-reqs:

GOOS=windows GOARCH=amd64 go install
GOOS=darwin GOARCH=amd64 go install
GOOS=linux GOARCH=amd64 go install

Building the client for each platform:

GOOS=windows GOARCH=amd64 go build -o lczero-client.exe
GOOS=darwin GOARCH=amd64 go build -o lczero-client_mac
GOOS=linux GOARCH=amd64 go build -o lczero-client_linux

Go module support

Dependend go modules were added by executing:

go get 'github.com/Tilps/chess@master'    

gives something like:

go: downloading github.com/Tilps/chess v0.0.0-20200409092358-c35715299813
go: github.com/Tilps/chess master => v0.0.0-20200409092358-c35715299813

This version number can then be used in the go.mod file

Whenever you want to update the version do the above go get step and there will be a new version number generated that you can put in the existing go.mod file.

Just use the command go mod download to update go's module cache. building should work with go build lc0_main.go