Update install instructions / deps? Install currently fails.

[rsend]

Hi,
I tried installing using the latest version of Go on a Raspberry Pi. The instructions now require "go install [url]@Version", which fails at:

github.com/chai2010/webp

go/pkg/mod/github.com/chai2010/[email protected]/webp.go:22:9: undefined: webpGetInfo
go/pkg/mod/github.com/chai2010/[email protected]/webp.go:26:20: undefined: webpDecodeGray
go/pkg/mod/github.com/chai2010/[email protected]/webp.go:39:20: undefined: webpDecodeRGB
go/pkg/mod/github.com/chai2010/[email protected]/webp.go:52:20: undefined: webpDecodeRGBA
go/pkg/mod/github.com/chai2010/[email protected]/webp.go:68:14: undefined: webpDecodeGrayToSize
go/pkg/mod/github.com/chai2010/[email protected]/webp.go:82:14: undefined: webpDecodeRGBToSize
go/pkg/mod/github.com/chai2010/[email protected]/webp.go:96:14: undefined: webpDecodeRGBAToSize
go/pkg/mod/github.com/chai2010/[email protected]/webp.go:109:7: undefined: toGrayImage
go/pkg/mod/github.com/chai2010/[email protected]/webp.go:110:14: undefined: webpEncodeGray
go/pkg/mod/github.com/chai2010/[email protected]/webp.go:119:14: undefined: webpEncodeRGB
go/pkg/mod/github.com/chai2010/[email protected]/webp.go:119:14: too many errors
github.com/pixiv/go-libjpeg/jpeg: build constraints exclude all Go files in /root/go/pkg/mod/github.com/pixiv/[email protected]/jpeg
gopkg.in/kothar/brotli-go.v0/dec: build constraints exclude all Go files in /root/go/pkg/mod/gopkg.in/kothar/[email protected]/dec
gopkg.in/kothar/brotli-go.v0/enc: build constraints exclude all Go files in /root/go/pkg/mod/gopkg.in/kothar/[email protected]/enc

Note that I had to install libjpeg-9 instead of libjpeg-8 as the latter is now unavailable - would that cause the above issues? I'd love to use this project, but I can't tell if it's being maintained or not.

[gaul]

I suspect that you do not have libwebp and libwebp-dev installed. Maybe the installation instructions are incomplete now that compy added webp support?

[rsend]

Hi,
So I did get it to work - but the workaround involves using libjpeg8 anyway. In particular for Raspberry Pi, I had to build this which I guess provides libjpeg8-dev which seems to be required. That makes the errors in my first comment here go away.

So - do you think it's feasible to use libjpeg9?

We also need a newer go version, which changes the install syntax from "go get" to "go install" as mentioned

[TehDomic]

Hi, So I did get it to work - but the workaround involves using libjpeg8 anyway. In particular for Raspberry Pi, I had to build this which I guess provides libjpeg8-dev which seems to be required. That makes the errors in my first comment here go away.

So - do you think it's feasible to use libjpeg9?

We also need a newer go version, which changes the install syntax from "go get" to "go install" as mentioned

Agreed. Would also like to use WebP or newer. I was manually able to figure out downloading the code in a zip file and build it in a Ubuntu VM with golang-go manually installed.