We are building a system that targets many different combinations of OS's 
and architectures.

Up until now we have been able to keep the whole code base and external 
packages in pure Go (no CGO), which means that the cross compiler 
functionality of GC has been sufficient for us.

However, recently we have introduced a dependency to an SQLite library 
(https://github.com/mattn/go-sqlite3) which needs CGO and I want to avoid 
having each developer to install C compilers for all combinations, so I'm 
investigating if it would be possible to simplify this process.

So let's say I am running Linux/AMD64 on my PC and that my colleague is 
using a Windows machine. Could I build the CGO part on my machine as an 
archive file and then ship this archive to my colleagues machine in order 
to make it possible for him to change GOOS and GOARCH to Linux/AMD64 and 
thereby enabling him to cross compile (with "go build") for this 
architecture (without having a C compiler for Linux/AMD64 available)?

Is this possible or do we always have to have a C-toolchain available on 
the machine where we perform the cross compilation?

Best Regards
    //Jan Flyborg

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