Stop injecting symbols into host bionic binaries

The host bionic bootstrapping no longer needs an injected symbol.
Replace host_bionic_inject with host_bionic_verify that validates
the resulting binary, and add it as a validation dependency of the
binary.

Test: build and run host bionic binary
Change-Id: I3e303d2a164b6eef851bdc8075e6ee456c05b0a8
diff --git a/cc/binary.go b/cc/binary.go
index 999b82c..4db25db 100644
--- a/cc/binary.go
+++ b/cc/binary.go
@@ -401,16 +401,18 @@
 		}
 	}
 
+	var validations android.WritablePaths
+
 	// Handle host bionic linker symbols.
 	if ctx.Os() == android.LinuxBionic && !binary.static() {
-		injectedOutputFile := outputFile
-		outputFile = android.PathForModuleOut(ctx, "prelinker", fileName)
+		verifyFile := android.PathForModuleOut(ctx, "host_bionic_verify.stamp")
 
 		if !deps.DynamicLinker.Valid() {
 			panic("Non-static host bionic modules must have a dynamic linker")
 		}
 
-		binary.injectHostBionicLinkerSymbols(ctx, outputFile, deps.DynamicLinker.Path(), injectedOutputFile)
+		binary.verifyHostBionicLinker(ctx, outputFile, deps.DynamicLinker.Path(), verifyFile)
+		validations = append(validations, verifyFile)
 	}
 
 	var sharedLibs android.Paths
@@ -430,7 +432,7 @@
 	// Register link action.
 	transformObjToDynamicBinary(ctx, objs.objFiles, sharedLibs, deps.StaticLibs,
 		deps.LateStaticLibs, deps.WholeStaticLibs, linkerDeps, deps.CrtBegin, deps.CrtEnd, true,
-		builderFlags, outputFile, nil)
+		builderFlags, outputFile, nil, validations)
 
 	objs.coverageFiles = append(objs.coverageFiles, deps.StaticLibObjs.coverageFiles...)
 	objs.coverageFiles = append(objs.coverageFiles, deps.WholeStaticLibObjs.coverageFiles...)
@@ -532,19 +534,19 @@
 }
 
 func init() {
-	pctx.HostBinToolVariable("hostBionicSymbolsInjectCmd", "host_bionic_inject")
+	pctx.HostBinToolVariable("verifyHostBionicCmd", "host_bionic_verify")
 }
 
-var injectHostBionicSymbols = pctx.AndroidStaticRule("injectHostBionicSymbols",
+var verifyHostBionic = pctx.AndroidStaticRule("verifyHostBionic",
 	blueprint.RuleParams{
-		Command:     "$hostBionicSymbolsInjectCmd -i $in -l $linker -o $out",
-		CommandDeps: []string{"$hostBionicSymbolsInjectCmd"},
+		Command:     "$verifyHostBionicCmd -i $in -l $linker && touch $out",
+		CommandDeps: []string{"$verifyHostBionicCmd"},
 	}, "linker")
 
-func (binary *binaryDecorator) injectHostBionicLinkerSymbols(ctx ModuleContext, in, linker android.Path, out android.WritablePath) {
+func (binary *binaryDecorator) verifyHostBionicLinker(ctx ModuleContext, in, linker android.Path, out android.WritablePath) {
 	ctx.Build(pctx, android.BuildParams{
-		Rule:        injectHostBionicSymbols,
-		Description: "inject host bionic symbols",
+		Rule:        verifyHostBionic,
+		Description: "verify host bionic",
 		Input:       in,
 		Implicit:    linker,
 		Output:      out,