mage: build plugins too

mage.go

@@ -8,6 +8,7 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
+	"runtime"
 
 	"github.com/jtolds/qod"
 )
@@ -29,7 +30,7 @@ func shouldWork(ctx context.Context, env []string, dir string, cmdName string, a
 
 	cmd := exec.CommandContext(ctx, loc, args...)
 	cmd.Dir = dir
-	cmd.Env = env
+	cmd.Env = append(env, os.Environ()...)
 
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
@@ -43,6 +44,15 @@ func goBuild(ctx context.Context, env []string, dir string, pkgname string) {
 	shouldWork(ctx, env, dir, "go", "build", pkgBase+pkgname)
 }
 
+func goBuildPlugin(ctx context.Context, dir, pkgname, fname string) {
+	if runtime.GOOS != "linux" {
+		qod.Printlnf("plugins don't work on non-linux machines yet :(")
+		return
+	}
+
+	shouldWork(ctx, nil, dir, "go", "build", "-buildmode=plugin", "-o=fname", pkgBase+pkgname)
+}
+
 // Build builds the binaries for route and routed.
 func Build() {
 	ctx, cancel := context.WithCancel(context.Background())
@@ -50,7 +60,20 @@ func Build() {
 
 	d := filepath.Join(wd, "./bin")
 
-	for _, pkg := range []string{"helloserver", "httpagent", "route", "routed"} {
-		goBuild(ctx, os.Environ(), d, "cmd/"+pkg)
+	for _, goos := range []string{"linux", "darwin", "windows"} {
+
+		os.Mkdir(filepath.Join(d, goos), 0777)
+		for _, pkg := range []string{"route-httpagent", "route", "routed"} {
+			goBuild(ctx, append(os.Environ(), "GOOS="+goos), filepath.Join(d, goos), "cmd/"+pkg)
+			qod.Printlnf("built binary for %s for os %s", pkg, goos)
+		}
 	}
 }
+
+// Plugin builds all of the plugins for programs wanting to augment themselves with route.
+func Plugin() {
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	goBuildPlugin(ctx, filepath.Join(wd, "./bin/linux"), "plugins/autohttpagent", "autohttpagent.so")
+}