X-Git-Url: http://www.git.cypherpunks.ru/?a=blobdiff_plain;f=dep.go;h=0e4f24fb0a1ef8872145d2715271f8eb5cff8adc;hb=3c87984511180d7bf865574123195588ea8c044c;hp=539ef5791e3011f53e84add54b50ee671b103f3d;hpb=b42c8c2dba5ea7667c32681338930969ed5c1cdb;p=goredo.git

diff --git a/dep.go b/dep.go
index 539ef57..0e4f24f 100644
--- a/dep.go
+++ b/dep.go
@@ -1,6 +1,6 @@
 /*
 goredo -- djb's redo implementation on pure Go
-Copyright (C) 2020-2021 Sergey Matveev <stargrave@stargrave.org>
+Copyright (C) 2020-2022 Sergey Matveev <stargrave@stargrave.org>
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -86,7 +86,7 @@ func fileHash(fd *os.File) (string, error) {
 	return hex.EncodeToString(h.Sum(nil)), nil
 }
 
-func depWrite(fdDep *os.File, cwd, tgt string) error {
+func depWrite(fdDep *os.File, cwd, tgt, hsh string) error {
 	tracef(CDebug, "ifchange: %s <- %s", fdDep.Name(), tgt)
 	fd, err := os.Open(path.Join(cwd, tgt))
 	if err != nil {
@@ -104,9 +104,11 @@ func depWrite(fdDep *os.File, cwd, tgt string) error {
 	if err != nil {
 		return err
 	}
-	hsh, err := fileHash(fd)
-	if err != nil {
-		return err
+	if hsh == "" {
+		hsh, err = fileHash(fd)
+		if err != nil {
+			return err
+		}
 	}
 	fields := []recfile.Field{
 		{Name: "Type", Value: DepTypeIfchange},
@@ -137,7 +139,7 @@ func depsWrite(fdDep *os.File, tgts []string) error {
 			panic(err)
 		}
 		if _, errStat := os.Stat(tgt); errStat == nil {
-			err = depWrite(fdDep, tgtDir, tgtRel)
+			err = depWrite(fdDep, tgtDir, tgtRel, "")
 		} else {
 			tracef(CDebug, "ifchange: %s <- %s (non-existing)", fdDep.Name(), tgtRel)
 			fields := []recfile.Field{