Have Soong try to enforce that genrules declare all their outputs.

This causes Soong to put the outputs of each genrule into a temporary
location and copy the declared outputs back to the output directory.
This gets the process closer to having an actual sandbox.

Bug: 35562758
Test: make

Change-Id: I8048fbf1a3899a86fb99d71b60669b6633b07b3e

1 files changed, 26 insertions, 0 deletions

diff --git a/shared/paths.go b/shared/paths.go
new file mode 100644
index 00000000..f5dc5ac4
--- /dev/null
+++ b/shared/paths.go
@@ -0,0 +1,26 @@
+// Copyright 2017 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package shared
+
+// This file exists to share path-related logic between both soong_ui and soong
+
+import (
+	"path/filepath"
+)
+
+// Given the out directory, returns the root of the temp directory (to be cleared at the start of each execution of Soong)
+func TempDirForOutDir(outDir string) (tempPath string) {
+	return filepath.Join(outDir, ".temp")
+}