soong: Add equivalent for LOCAL_EXPORT_CFLAGS

Change-Id: Ieb3e5739b50789bdbaf41a7d5adb04b08f7b9ea2

androidmk/androidmk/android.go

@@ -759,6 +759,13 @@ func cflags(ctx variableAssignmentContext) error {
 	return includeVariableNow(bpVariable{"cflags", bpparser.ListType}, ctx)
 }
 
+func exportCflags(ctx variableAssignmentContext) error {
+	// The Soong replacement for EXPORT_CFLAGS doesn't need the same extra escaped quotes that were present in Make
+	ctx.mkvalue = ctx.mkvalue.Clone()
+	ctx.mkvalue.ReplaceLiteral(`\"`, `"`)
+	return includeVariableNow(bpVariable{"export_cflags", bpparser.ListType}, ctx)
+}
+
 func protoOutputParams(ctx variableAssignmentContext) error {
 	// The Soong replacement for LOCAL_PROTO_JAVA_OUTPUT_PARAMS doesn't need ","
 	ctx.mkvalue = ctx.mkvalue.Clone()

cc/library.go

@@ -197,6 +197,9 @@ type FlagExporterProperties struct {
 	// using -isystem for this module and any module that links against this module.
 	Export_system_include_dirs []string `android:"arch_variant,variant_prepend"`
 
+	// list of plain cc flags to be used for any module that links against this module.
+	Export_cflags []string  `android:"arch_variant"`
+
 	Target struct {
 		Vendor, Product struct {
 			// list of exported include directories, like
@@ -307,6 +310,10 @@ func (f *flagExporter) exportIncludes(ctx ModuleContext) {
 	f.systemDirs = append(f.systemDirs, android.PathsForModuleSrc(ctx, f.Properties.Export_system_include_dirs)...)
 }
 
+func (f *flagExporter) exportExtraFlags(ctx ModuleContext) {
+	f.flags = append(f.flags, f.Properties.Export_cflags...)
+}
+
 // exportIncludesAsSystem registers the include directories and system include directories to be
 // exported transitively both as system include directories to modules depending on this module.
 func (f *flagExporter) exportIncludesAsSystem(ctx ModuleContext) {
@@ -1623,6 +1630,7 @@ func (library *libraryDecorator) link(ctx ModuleContext,
 
 	// Export include paths and flags to be propagated up the tree.
 	library.exportIncludes(ctx)
+	library.exportExtraFlags(ctx)
 	library.reexportDirs(deps.ReexportedDirs...)
 	library.reexportSystemDirs(deps.ReexportedSystemDirs...)
 	library.reexportFlags(deps.ReexportedFlags...)