Pragmatism in the real world

Building Go binaries for different platforms

One nice thing about Go is that it can cross-compile which allows me to use my Mac to build binaries for different operating systems. This is increibly useful for providing binaries for Rodeo, my command line Flickr uploader. To do this we set the GOOS and GOARCH environment variables before calling go build. For example to build for x64 on Linux, I do: version=`git describe –tags HEAD` env GOOS=linux GOARCH=amd64 go build \ -ldflags "-X… continue reading.

Setting the version of a Go application when building

When I was building Rodeo, my command line Flickr uploader, one thing I wanted to do was set the version number that you see when you type rodeo -v to the correct version when I build the application for release. The basic process I wanted was: Tag git repository with new version number and push Build rodeo with that version without editing any files Upload binary I've emphasised the important part. I don't want to… continue reading.

Converting JSON to a struct in Go

I'm in the process of writing a little command line app in Go that uploads images to Flickr. It's called Rodeo and it's working well as a project with which to learn Go in 2020. Rodeo uses ExifTool to interrogate an image file for meta data. ExifTool is wonderful and very comprehensive and with the -j switch can return JSON. Today I want to note down what I learned about dealing with JSON. $ exiftool… continue reading.