Reland "Use cp instead of install for ndk_headers"

This relands aosp/3026027 with fixes for ndk_library. ndk_library
uses ctx.InstallFile to copy the stubs from an intermediate dir to
out/soong/ndk/sysroot/. The copy rule was created in
out/soong/installs-<product>.mk. This would cause issues when soong_ui
is run in `--soong-only` mode

To fix this, the cp rule is created entirely in soong. The stub library
is marked uninstallable to prevent creation of duplicate rules when
`--soong-only` mode is not used

Test: presubmits
Test: lunch ndk-trunk_staging-userdebug &&
ALLOW_MISSING_DEPENDENCIES=true build/soong/soong_ui.bash --soong-only
out/soong/ndk.timestamp

Change-Id: I6f8b87d88d8ca5ec9a3327e1f11e9aa654f8cdce
diff --git a/cc/androidmk.go b/cc/androidmk.go
index 20673e8..6e27946 100644
--- a/cc/androidmk.go
+++ b/cc/androidmk.go
@@ -448,6 +448,7 @@
 		if c.parsedCoverageXmlPath.String() != "" {
 			entries.SetString("SOONG_NDK_API_XML", "$(SOONG_NDK_API_XML) "+c.parsedCoverageXmlPath.String())
 		}
+		entries.SetBool("LOCAL_UNINSTALLABLE_MODULE", true) // Stubs should not be installed
 	})
 }
 
diff --git a/cc/ndk_headers.go b/cc/ndk_headers.go
index 567cb7c..57a3b3a 100644
--- a/cc/ndk_headers.go
+++ b/cc/ndk_headers.go
@@ -15,7 +15,6 @@
 package cc
 
 import (
-	"fmt"
 	"path/filepath"
 
 	"android/soong/android"
@@ -45,7 +44,7 @@
 }
 
 // Returns the NDK base include path for use with sdk_version current. Usable with -I.
-func getCurrentIncludePath(ctx android.ModuleContext) android.InstallPath {
+func getCurrentIncludePath(ctx android.ModuleContext) android.OutputPath {
 	return getNdkSysrootBase(ctx).Join(ctx, "usr/include")
 }
 
@@ -87,7 +86,7 @@
 }
 
 func getHeaderInstallDir(ctx android.ModuleContext, header android.Path, from string,
-	to string) android.InstallPath {
+	to string) android.OutputPath {
 	// Output path is the sysroot base + "usr/include" + to directory + directory component
 	// of the file without the leading from directory stripped.
 	//
@@ -129,13 +128,12 @@
 	for _, header := range m.srcPaths {
 		installDir := getHeaderInstallDir(ctx, header, String(m.properties.From),
 			String(m.properties.To))
-		installedPath := ctx.InstallFile(installDir, header.Base(), header)
 		installPath := installDir.Join(ctx, header.Base())
-		if installPath != installedPath {
-			panic(fmt.Sprintf(
-				"expected header install path (%q) not equal to actual install path %q",
-				installPath, installedPath))
-		}
+		ctx.Build(pctx, android.BuildParams{
+			Rule:   android.Cp,
+			Input:  header,
+			Output: installPath,
+		})
 		m.installPaths = append(m.installPaths, installPath)
 	}
 
diff --git a/cc/ndk_library.go b/cc/ndk_library.go
index 64193b1..39dd415 100644
--- a/cc/ndk_library.go
+++ b/cc/ndk_library.go
@@ -518,19 +518,25 @@
 
 // Returns the install path for unversioned NDK libraries (currently only static
 // libraries).
-func getUnversionedLibraryInstallPath(ctx ModuleContext) android.InstallPath {
+func getUnversionedLibraryInstallPath(ctx ModuleContext) android.OutputPath {
 	return getNdkSysrootBase(ctx).Join(ctx, "usr/lib", config.NDKTriple(ctx.toolchain()))
 }
 
 // Returns the install path for versioned NDK libraries. These are most often
 // stubs, but the same paths are used for CRT objects.
-func getVersionedLibraryInstallPath(ctx ModuleContext, apiLevel android.ApiLevel) android.InstallPath {
+func getVersionedLibraryInstallPath(ctx ModuleContext, apiLevel android.ApiLevel) android.OutputPath {
 	return getUnversionedLibraryInstallPath(ctx).Join(ctx, apiLevel.String())
 }
 
 func (stub *stubDecorator) install(ctx ModuleContext, path android.Path) {
 	installDir := getVersionedLibraryInstallPath(ctx, stub.apiLevel)
-	stub.installPath = ctx.InstallFile(installDir, path.Base(), path)
+	out := installDir.Join(ctx, path.Base())
+	ctx.Build(pctx, android.BuildParams{
+		Rule:   android.Cp,
+		Input:  path,
+		Output: out,
+	})
+	stub.installPath = out
 }
 
 func newStubLibrary() *Module {
diff --git a/cc/ndk_sysroot.go b/cc/ndk_sysroot.go
index 483d23b..e815172 100644
--- a/cc/ndk_sysroot.go
+++ b/cc/ndk_sysroot.go
@@ -69,12 +69,12 @@
 	ctx.RegisterParallelSingletonType("ndk", NdkSingleton)
 }
 
-func getNdkInstallBase(ctx android.PathContext) android.InstallPath {
+func getNdkInstallBase(ctx android.PathContext) android.OutputPath {
 	return android.PathForNdkInstall(ctx)
 }
 
 // Returns the main install directory for the NDK sysroot. Usable with --sysroot.
-func getNdkSysrootBase(ctx android.PathContext) android.InstallPath {
+func getNdkSysrootBase(ctx android.PathContext) android.OutputPath {
 	return getNdkInstallBase(ctx).Join(ctx, "sysroot")
 }