main.go

package main

import "fmt"

func main() {
    fmt.Println("hello, world!")
}

Makefile

TARGET=$(notdir $(shell pwd))
MAGIC=$(shell (([ "$(GOARCH)" == "amd64" ] && echo 6) || ([ "$(GOARCH)" == "arm" ] && echo 5)) || echo 8)

all:
	@for dir in `find * -type d`; do                                        \
	    go=$$(find "$$dir" -maxdepth 1 -name "*.go");                       \
	    if [ ! -z "$$go" ]; then                                            \
                echo "- $$dir: $$go";                                           \
	        $(MAGIC)g -I. -o _go_.8 $$go;                                   \
	        rm -f $$dir.a;                                                  \
	        gopack grc $$dir.a _go_.8;                                      \
	    fi                                                                  \
	done
	@if [ -f 'main.go' ]; then                                              \
	    $(MAGIC)g -I. -o _go_.8 main.go;                                    \
	    $(MAGIC)l -o $(TARGET) _go_.8;                                      \
	fi
	@rm -f _go_.8
clean:
	@rm -f _go_.8 `find * -name "*.a"` $(TARGET)