From 257c471ff21a31889470f02c1542b437ff633b99 Mon Sep 17 00:00:00 2001
From: Aaron Boodman <zboogs@gmail.com>
Date: Sat, 5 Apr 2014 19:34:13 -0700
Subject: [PATCH] Don't rebuild file embeds if they haven't changed.

Change-Id: Ia3de5b5dc00341254b76b7adf88bf6038319690e
---
 make.go                                    | 18 ++++++------------
 pkg/fileembed/genfileembed/genfileembed.go |  2 +-
 2 files changed, 7 insertions(+), 13 deletions(-)

diff --git a/make.go b/make.go
index 5bff2b523..d01be43ac 100644
--- a/make.go
+++ b/make.go
@@ -360,19 +360,13 @@ func genEmbeds() error {
 		}
 		// We mark all the zembeds in builddir as wanted, so that we do not
 		// have to regen them next time, unless they need updating.
-		f, err := os.Open(embeds)
-		if err != nil {
-			return err
-		}
-		defer f.Close()
-		names, err := f.Readdirnames(-1)
-		if err != nil {
-			return err
-		}
-		for _, v := range names {
-			if strings.HasPrefix(v, "zembed_") {
-				wantDestFile[filepath.Join(embeds, v)] = true
+		if err := filepath.Walk(embeds, func(path string, _ os.FileInfo, err error) error {
+			if strings.HasPrefix(filepath.Base(path), "zembed_") {
+				wantDestFile[path] = true
 			}
+			return err
+		}); err != nil {
+			return err
 		}
 	}
 	return nil
diff --git a/pkg/fileembed/genfileembed/genfileembed.go b/pkg/fileembed/genfileembed/genfileembed.go
index 2b2fec2ad..f80ffba6f 100644
--- a/pkg/fileembed/genfileembed/genfileembed.go
+++ b/pkg/fileembed/genfileembed/genfileembed.go
@@ -108,7 +108,7 @@ func main() {
 		if !genFile() {
 			continue
 		}
-		log.Printf("Updating %s (package %s)", filepath.Join(dir, embedName), pkgName)
+		log.Printf("Updating %s (package %s)", embedName, pkgName)
 
 		bs, err := ioutil.ReadFile(fileName)
 		if err != nil {