Make GENERATE_BAZEL_FILES=true correct.
This is achieved by writing soong.environment.used in Main() instead of
as a side effect of a singleton. This makes a difference because build
actions are not generated when GENERATE_BAZEL_FILES=true is set,
therefore the side effect did not happen.
Arguably, Main() is made worse by this change, but I don't want to
tackle the problem of readably determining which mode soong_build is
running in in this change.
Test: Presubmits + the additional test.
Change-Id: I66af2429aedf008762173eaaa55b828b4cf4328b
diff --git a/android/env.go b/android/env.go
index 289d803..725a145 100644
--- a/android/env.go
+++ b/android/env.go
@@ -18,12 +18,16 @@
"android/soong/shared"
)
-// This file supports dependencies on environment variables. During build manifest generation,
-// any dependency on an environment variable is added to a list. During the singleton phase
-// a JSON file is written containing the current value of all used environment variables.
-// The next time the top-level build script is run, it uses the soong_env executable to
-// compare the contents of the environment variables, rewriting the file if necessary to cause
-// a manifest regeneration.
+// This file supports dependencies on environment variables. During build
+// manifest generation, any dependency on an environment variable is added to a
+// list. At the end of the build, a JSON file called soong.environment.used is
+// written containing the current value of all used environment variables. The
+// next time the top-level build script is run, soong_ui parses the compare the
+// contents of the used environment variables, then, if they changed, deletes
+// soong.environment.used to cause a rebuild.
+//
+// The dependency of build.ninja on soong.environment.used is declared in
+// build.ninja.d
var originalEnv map[string]string
@@ -34,30 +38,3 @@
panic(err)
}
}
-
-func EnvSingleton() Singleton {
- return &envSingleton{}
-}
-
-type envSingleton struct{}
-
-func (c *envSingleton) GenerateBuildActions(ctx SingletonContext) {
- envDeps := ctx.Config().EnvDeps()
-
- envFile := PathForOutput(ctx, "soong.environment.used")
- if ctx.Failed() {
- return
- }
-
- data, err := shared.EnvFileContents(envDeps)
- if err != nil {
- ctx.Errorf(err.Error())
- }
-
- err = WriteFileToOutputDir(envFile, data, 0666)
- if err != nil {
- ctx.Errorf(err.Error())
- }
-
- ctx.AddNinjaFileDeps(envFile.String())
-}