diff --git a/cc/bp2build.go b/cc/bp2build.go
index 9bf101e..e64573c 100644
--- a/cc/bp2build.go
+++ b/cc/bp2build.go
@@ -50,35 +50,51 @@
 
 	var allDeps []string
 
-	for _, p := range module.GetTargetProperties(ctx, &BaseCompilerProperties{}) {
-		// base compiler props
-		if baseCompilerProps, ok := p.(*BaseCompilerProperties); ok {
+	for _, osProps := range module.GetTargetProperties(ctx, &BaseCompilerProperties{}) {
+		// os base compiler props
+		if baseCompilerProps, ok := osProps.Properties.(*BaseCompilerProperties); ok {
 			allDeps = append(allDeps, baseCompilerProps.Generated_headers...)
 			allDeps = append(allDeps, baseCompilerProps.Generated_sources...)
 		}
+		// os + arch base compiler props
+		for _, archProps := range osProps.ArchProperties {
+			if baseCompilerProps, ok := archProps.(*BaseCompilerProperties); ok {
+				allDeps = append(allDeps, baseCompilerProps.Generated_headers...)
+				allDeps = append(allDeps, baseCompilerProps.Generated_sources...)
+			}
+		}
 	}
 
-	for _, p := range module.GetArchProperties(ctx, &BaseCompilerProperties{}) {
+	for _, props := range module.GetArchProperties(ctx, &BaseCompilerProperties{}) {
 		// arch specific compiler props
-		if baseCompilerProps, ok := p.(*BaseCompilerProperties); ok {
+		if baseCompilerProps, ok := props.(*BaseCompilerProperties); ok {
 			allDeps = append(allDeps, baseCompilerProps.Generated_headers...)
 			allDeps = append(allDeps, baseCompilerProps.Generated_sources...)
 		}
 	}
 
-	for _, p := range module.GetTargetProperties(ctx, &BaseLinkerProperties{}) {
-		// arch specific linker props
-		if baseLinkerProps, ok := p.(*BaseLinkerProperties); ok {
+	for _, osProps := range module.GetTargetProperties(ctx, &BaseLinkerProperties{}) {
+		// os specific linker props
+		if baseLinkerProps, ok := osProps.Properties.(*BaseLinkerProperties); ok {
 			allDeps = append(allDeps, baseLinkerProps.Header_libs...)
 			allDeps = append(allDeps, baseLinkerProps.Export_header_lib_headers...)
 			allDeps = append(allDeps, baseLinkerProps.Static_libs...)
 			allDeps = append(allDeps, baseLinkerProps.Whole_static_libs...)
 		}
+		// os + arch base compiler props
+		for _, archProps := range osProps.ArchProperties {
+			if baseLinkerProps, ok := archProps.(*BaseLinkerProperties); ok {
+				allDeps = append(allDeps, baseLinkerProps.Header_libs...)
+				allDeps = append(allDeps, baseLinkerProps.Export_header_lib_headers...)
+				allDeps = append(allDeps, baseLinkerProps.Static_libs...)
+				allDeps = append(allDeps, baseLinkerProps.Whole_static_libs...)
+			}
+		}
 	}
 
-	for _, p := range module.GetArchProperties(ctx, &BaseLinkerProperties{}) {
+	for _, props := range module.GetArchProperties(ctx, &BaseLinkerProperties{}) {
 		// arch specific linker props
-		if baseLinkerProps, ok := p.(*BaseLinkerProperties); ok {
+		if baseLinkerProps, ok := props.(*BaseLinkerProperties); ok {
 			allDeps = append(allDeps, baseLinkerProps.Header_libs...)
 			allDeps = append(allDeps, baseLinkerProps.Export_header_lib_headers...)
 			allDeps = append(allDeps, baseLinkerProps.Static_libs...)
@@ -309,16 +325,27 @@
 	// TODO(b/186153868): handle the case with multiple variant types, e.g. when arch and os are both used.
 	srcs.SetValueForArch(bazel.CONDITIONS_DEFAULT, defaultsSrcs)
 
-	// Handle OS specific props.
-	for os, props := range module.GetTargetProperties(ctx, &BaseCompilerProperties{}) {
-		if baseCompilerProps, ok := props.(*BaseCompilerProperties); ok {
+	// Handle target specific properties.
+	for os, osProps := range module.GetTargetProperties(ctx, &BaseCompilerProperties{}) {
+		if baseCompilerProps, ok := osProps.Properties.(*BaseCompilerProperties); ok {
 			srcsList := parseSrcs(baseCompilerProps)
 			// TODO(b/186153868): add support for os-specific srcs and exclude_srcs
-			srcs.SetValueForOS(os.Name, bazel.SubtractBazelLabelList(srcsList, baseSrcsLabelList))
-			copts.SetValueForOS(os.Name, parseCopts(baseCompilerProps))
-			asFlags.SetValueForOS(os.Name, parseCommandLineFlags(baseCompilerProps.Asflags))
-			conlyFlags.SetValueForOS(os.Name, parseCommandLineFlags(baseCompilerProps.Conlyflags))
-			cppFlags.SetValueForOS(os.Name, parseCommandLineFlags(baseCompilerProps.Cppflags))
+			srcs.SetOsValueForTarget(os.Name, bazel.SubtractBazelLabelList(srcsList, baseSrcsLabelList))
+			copts.SetOsValueForTarget(os.Name, parseCopts(baseCompilerProps))
+			asFlags.SetOsValueForTarget(os.Name, parseCommandLineFlags(baseCompilerProps.Asflags))
+			conlyFlags.SetOsValueForTarget(os.Name, parseCommandLineFlags(baseCompilerProps.Conlyflags))
+			cppFlags.SetOsValueForTarget(os.Name, parseCommandLineFlags(baseCompilerProps.Cppflags))
+		}
+		for arch, archProps := range osProps.ArchProperties {
+			if baseCompilerProps, ok := archProps.(*BaseCompilerProperties); ok {
+				srcsList := parseSrcs(baseCompilerProps)
+				// TODO(b/186153868): add support for os-specific srcs and exclude_srcs
+				srcs.SetOsArchValueForTarget(os.Name, arch.Name, bazel.SubtractBazelLabelList(srcsList, baseSrcsLabelList))
+				copts.SetOsArchValueForTarget(os.Name, arch.Name, parseCopts(baseCompilerProps))
+				asFlags.SetOsArchValueForTarget(os.Name, arch.Name, parseCommandLineFlags(baseCompilerProps.Asflags))
+				conlyFlags.SetOsArchValueForTarget(os.Name, arch.Name, parseCommandLineFlags(baseCompilerProps.Conlyflags))
+				cppFlags.SetOsArchValueForTarget(os.Name, arch.Name, parseCommandLineFlags(baseCompilerProps.Cppflags))
+			}
 		}
 	}
 
@@ -391,13 +418,18 @@
 	var linkopts bazel.StringListAttribute
 	var versionScript bazel.LabelAttribute
 
+	getLibs := func(baseLinkerProps *BaseLinkerProperties) []string {
+		libs := baseLinkerProps.Header_libs
+		libs = append(libs, baseLinkerProps.Static_libs...)
+		libs = android.SortedUniqueStrings(libs)
+		return libs
+	}
+
 	for _, linkerProps := range module.linker.linkerProps() {
 		if baseLinkerProps, ok := linkerProps.(*BaseLinkerProperties); ok {
-			libs := baseLinkerProps.Header_libs
-			libs = append(libs, baseLinkerProps.Static_libs...)
+			libs := getLibs(baseLinkerProps)
 			exportedLibs := baseLinkerProps.Export_header_lib_headers
 			wholeArchiveLibs := baseLinkerProps.Whole_static_libs
-			libs = android.SortedUniqueStrings(libs)
 			deps = bazel.MakeLabelListAttribute(android.BazelLabelForModuleDeps(ctx, libs))
 			exportedDeps = bazel.MakeLabelListAttribute(android.BazelLabelForModuleDeps(ctx, exportedLibs))
 			linkopts.Value = getBp2BuildLinkerFlags(baseLinkerProps)
@@ -414,13 +446,11 @@
 		}
 	}
 
-	for arch, p := range module.GetArchProperties(ctx, &BaseLinkerProperties{}) {
-		if baseLinkerProps, ok := p.(*BaseLinkerProperties); ok {
-			libs := baseLinkerProps.Header_libs
-			libs = append(libs, baseLinkerProps.Static_libs...)
+	for arch, props := range module.GetArchProperties(ctx, &BaseLinkerProperties{}) {
+		if baseLinkerProps, ok := props.(*BaseLinkerProperties); ok {
+			libs := getLibs(baseLinkerProps)
 			exportedLibs := baseLinkerProps.Export_header_lib_headers
 			wholeArchiveLibs := baseLinkerProps.Whole_static_libs
-			libs = android.SortedUniqueStrings(libs)
 			deps.SetValueForArch(arch.Name, android.BazelLabelForModuleDeps(ctx, libs))
 			exportedDeps.SetValueForArch(arch.Name, android.BazelLabelForModuleDeps(ctx, exportedLibs))
 			linkopts.SetValueForArch(arch.Name, getBp2BuildLinkerFlags(baseLinkerProps))
@@ -436,21 +466,34 @@
 		}
 	}
 
-	for os, p := range module.GetTargetProperties(ctx, &BaseLinkerProperties{}) {
-		if baseLinkerProps, ok := p.(*BaseLinkerProperties); ok {
-			libs := baseLinkerProps.Header_libs
-			libs = append(libs, baseLinkerProps.Static_libs...)
+	for os, targetProperties := range module.GetTargetProperties(ctx, &BaseLinkerProperties{}) {
+		if baseLinkerProps, ok := targetProperties.Properties.(*BaseLinkerProperties); ok {
+			libs := getLibs(baseLinkerProps)
 			exportedLibs := baseLinkerProps.Export_header_lib_headers
 			wholeArchiveLibs := baseLinkerProps.Whole_static_libs
-			libs = android.SortedUniqueStrings(libs)
-			wholeArchiveDeps.SetValueForOS(os.Name, android.BazelLabelForModuleDeps(ctx, wholeArchiveLibs))
-			deps.SetValueForOS(os.Name, android.BazelLabelForModuleDeps(ctx, libs))
-			exportedDeps.SetValueForOS(os.Name, android.BazelLabelForModuleDeps(ctx, exportedLibs))
+			wholeArchiveDeps.SetOsValueForTarget(os.Name, android.BazelLabelForModuleDeps(ctx, wholeArchiveLibs))
+			deps.SetOsValueForTarget(os.Name, android.BazelLabelForModuleDeps(ctx, libs))
+			exportedDeps.SetOsValueForTarget(os.Name, android.BazelLabelForModuleDeps(ctx, exportedLibs))
 
-			linkopts.SetValueForOS(os.Name, getBp2BuildLinkerFlags(baseLinkerProps))
+			linkopts.SetOsValueForTarget(os.Name, getBp2BuildLinkerFlags(baseLinkerProps))
 
 			sharedLibs := baseLinkerProps.Shared_libs
-			dynamicDeps.SetValueForOS(os.Name, android.BazelLabelForModuleDeps(ctx, sharedLibs))
+			dynamicDeps.SetOsValueForTarget(os.Name, android.BazelLabelForModuleDeps(ctx, sharedLibs))
+		}
+		for arch, archProperties := range targetProperties.ArchProperties {
+			if baseLinkerProps, ok := archProperties.(*BaseLinkerProperties); ok {
+				libs := getLibs(baseLinkerProps)
+				exportedLibs := baseLinkerProps.Export_header_lib_headers
+				wholeArchiveLibs := baseLinkerProps.Whole_static_libs
+				wholeArchiveDeps.SetOsArchValueForTarget(os.Name, arch.Name, android.BazelLabelForModuleDeps(ctx, wholeArchiveLibs))
+				deps.SetOsArchValueForTarget(os.Name, arch.Name, android.BazelLabelForModuleDeps(ctx, libs))
+				exportedDeps.SetOsArchValueForTarget(os.Name, arch.Name, android.BazelLabelForModuleDeps(ctx, exportedLibs))
+
+				linkopts.SetOsArchValueForTarget(os.Name, arch.Name, getBp2BuildLinkerFlags(baseLinkerProps))
+
+				sharedLibs := baseLinkerProps.Shared_libs
+				dynamicDeps.SetOsArchValueForTarget(os.Name, arch.Name, android.BazelLabelForModuleDeps(ctx, sharedLibs))
+			}
 		}
 	}
 
@@ -499,32 +542,38 @@
 	includeDirs = append(includeDirs, libraryDecorator.flagExporter.Properties.Export_include_dirs...)
 	includeDirsAttribute := bazel.MakeStringListAttribute(includeDirs)
 
+	getVariantIncludeDirs := func(includeDirs []string, flagExporterProperties *FlagExporterProperties) []string {
+		variantIncludeDirs := flagExporterProperties.Export_system_include_dirs
+		variantIncludeDirs = append(variantIncludeDirs, flagExporterProperties.Export_include_dirs...)
+
+		// To avoid duplicate includes when base includes + arch includes are combined
+		// TODO: This doesn't take conflicts between arch and os includes into account
+		variantIncludeDirs = bazel.SubtractStrings(variantIncludeDirs, includeDirs)
+		return variantIncludeDirs
+	}
+
 	for arch, props := range module.GetArchProperties(ctx, &FlagExporterProperties{}) {
 		if flagExporterProperties, ok := props.(*FlagExporterProperties); ok {
-			archIncludeDirs := flagExporterProperties.Export_system_include_dirs
-			archIncludeDirs = append(archIncludeDirs, flagExporterProperties.Export_include_dirs...)
-
-			// To avoid duplicate includes when base includes + arch includes are combined
-			// FIXME: This doesn't take conflicts between arch and os includes into account
-			archIncludeDirs = bazel.SubtractStrings(archIncludeDirs, includeDirs)
-
+			archIncludeDirs := getVariantIncludeDirs(includeDirs, flagExporterProperties)
 			if len(archIncludeDirs) > 0 {
 				includeDirsAttribute.SetValueForArch(arch.Name, archIncludeDirs)
 			}
 		}
 	}
 
-	for os, props := range module.GetTargetProperties(ctx, &FlagExporterProperties{}) {
-		if flagExporterProperties, ok := props.(*FlagExporterProperties); ok {
-			osIncludeDirs := flagExporterProperties.Export_system_include_dirs
-			osIncludeDirs = append(osIncludeDirs, flagExporterProperties.Export_include_dirs...)
-
-			// To avoid duplicate includes when base includes + os includes are combined
-			// FIXME: This doesn't take conflicts between arch and os includes into account
-			osIncludeDirs = bazel.SubtractStrings(osIncludeDirs, includeDirs)
-
-			if len(osIncludeDirs) > 0 {
-				includeDirsAttribute.SetValueForOS(os.Name, osIncludeDirs)
+	for os, targetProperties := range module.GetTargetProperties(ctx, &FlagExporterProperties{}) {
+		if flagExporterProperties, ok := targetProperties.Properties.(*FlagExporterProperties); ok {
+			targetIncludeDirs := getVariantIncludeDirs(includeDirs, flagExporterProperties)
+			if len(targetIncludeDirs) > 0 {
+				includeDirsAttribute.SetOsValueForTarget(os.Name, targetIncludeDirs)
+			}
+		}
+		for arch, archProperties := range targetProperties.ArchProperties {
+			if flagExporterProperties, ok := archProperties.(*FlagExporterProperties); ok {
+				targetIncludeDirs := getVariantIncludeDirs(includeDirs, flagExporterProperties)
+				if len(targetIncludeDirs) > 0 {
+					includeDirsAttribute.SetOsArchValueForTarget(os.Name, arch.Name, targetIncludeDirs)
+				}
 			}
 		}
 	}