Building and linking dynamically from a go binary

Question

My problem is the following:

1. I have a go binary on a machine
2. From that binary I need to compile an external .go file
3. Once compiled, I need to link the compiled go file into the current binary so I can use the just-compiled go code.

Do you think that's possible ?

I did a few researches and it does not seem to be possible, but I might have overlooked something.

Thanks :)

The first go binary would contain something like

func main() {
    // Here I need to compile an external go file (or package) which contains
    // The definition of runFoo()

    // Once the file/package is compiled and linked I need to call the compiled code
    runFoo()

    // Continue the execution process normally here
}

Answer 1

The ability to create shared libraries will be in Go 1.5 in August 2015¹.

From "The State of Go" talk by Andrew Gerrand:

Shared libraries

Go 1.5 can produce Go shared libraries that can be consumed by Go programs.

Build the standard library as shared libraries:

$ go install -buildmode=shared std

Build a "Hello, world" program that links against the shared libraries:

$ go build -linkshared hello.go
$ ls -l hello
-rwxr-xr-x 1 adg adg 13926 May 26 02:13 hello

Go 1.5 can also build Go programs as C archive files (for static linking) or shared libraries (for dynamic linking) that can be consumed by C programs.

[See:] golang.org/s/execmodes

_{¹ Note, gccgo already had limited support for this for some time, Go 1.5 will be the first time this is supported by the regular go build tools.}