Add ability in Make to build specific platforms

[blueelvis]

The exact command to reproduce the issue:
make cross

The operating system version:
Windows 10 Enterprise

I am doing development on Windows in addition to Bash for Windows. As of now, running make cross compiles the binaries for every platform i.e. Linux, Mac & Windows. We need to have the ability to build for a targeted platform. For example for me, it doesn't make sense to build the Mac binaries as well while trying to build the Windows binaries to test.

[afbjorklund]

Did you try make out/minikube-windows-amd64.exe ?

The "cross" target is just a phony target building all of them.

.PHONY: cross
cross: out/minikube-linux-$(GOARCH) out/minikube-darwin-amd64 out/minikube-windows-amd64.exe

[blueelvis]

I have not tried out that but what I did is that on my local, I just edited out the required executables in cross and then did compilation.

I was thinking if we could add 2 more targets in addition to cross to build specific platforms only? One for Windows and another one for Mac?

[afbjorklund]

We have three make targets today:

• out/minikube-linux-amd64
• out/minikube-darwin-amd64
• out/minikube-windows-amd64.exe

Do you need shorter aliases (phony targets, like "cross"), or what is the suggestion made here ?

[blueelvis]

@afbjorklund - You got me. I would like to see target specific aliases (phony targets) as well like make windows, make darwin, make linux, make all etc. What do you think? I think it would be much easier while developing on 1 platform.

[afbjorklund]

The all target already exists (also builds the drivers), and I suppose we could add aliases.

linux: out/minikube-linux-$(GOARCH)
darwin: out/minikube-darwin-amd64
windows: out/minikube-windows-amd64.exe