diff --git a/android/allowlists/allowlists.go b/android/allowlists/allowlists.go
index 71c8d0e..056c1a8 100644
--- a/android/allowlists/allowlists.go
+++ b/android/allowlists/allowlists.go
@@ -145,6 +145,7 @@
 		"external/flatbuffers":                   Bp2BuildDefaultTrueRecursively,
 		"external/fmtlib":                        Bp2BuildDefaultTrueRecursively,
 		"external/fsverity-utils":                Bp2BuildDefaultTrueRecursively,
+		"external/gflags":                        Bp2BuildDefaultTrueRecursively,
 		"external/google-benchmark":              Bp2BuildDefaultTrueRecursively,
 		"external/googletest":                    Bp2BuildDefaultTrueRecursively,
 		"external/guava":                         Bp2BuildDefaultTrueRecursively,
diff --git a/bazel/properties.go b/bazel/properties.go
index 702c31c..bb0eafc 100644
--- a/bazel/properties.go
+++ b/bazel/properties.go
@@ -194,14 +194,7 @@
 // UniqueSortedBazelLabels takes a []Label and deduplicates the labels, and returns
 // the slice in a sorted order.
 func UniqueSortedBazelLabels(originalLabels []Label) []Label {
-	uniqueLabelsSet := make(map[Label]bool)
-	for _, l := range originalLabels {
-		uniqueLabelsSet[l] = true
-	}
-	var uniqueLabels []Label
-	for l, _ := range uniqueLabelsSet {
-		uniqueLabels = append(uniqueLabels, l)
-	}
+	uniqueLabels := FirstUniqueBazelLabels(originalLabels)
 	sort.SliceStable(uniqueLabels, func(i, j int) bool {
 		return uniqueLabels[i].Label < uniqueLabels[j].Label
 	})
@@ -210,13 +203,13 @@
 
 func FirstUniqueBazelLabels(originalLabels []Label) []Label {
 	var labels []Label
-	found := make(map[Label]bool, len(originalLabels))
+	found := make(map[string]bool, len(originalLabels))
 	for _, l := range originalLabels {
-		if _, ok := found[l]; ok {
+		if _, ok := found[l.Label]; ok {
 			continue
 		}
 		labels = append(labels, l)
-		found[l] = true
+		found[l.Label] = true
 	}
 	return labels
 }
diff --git a/bazel/properties_test.go b/bazel/properties_test.go
index c98ae0e..751cb8b 100644
--- a/bazel/properties_test.go
+++ b/bazel/properties_test.go
@@ -33,8 +33,12 @@
 				{Label: "b"},
 				{Label: "a"},
 				{Label: "c"},
+				// namespaces
+				{Label: "//foo:bar", OriginalModuleName: "bar"},       // when referenced from foo namespace
+				{Label: "//foo:bar", OriginalModuleName: "//foo:bar"}, // when reference from root namespace
 			},
 			expectedUniqueLabels: []Label{
+				{Label: "//foo:bar", OriginalModuleName: "bar"},
 				{Label: "a"},
 				{Label: "b"},
 				{Label: "c"},
@@ -194,6 +198,9 @@
 					{Label: "b"},
 					{Label: "a"},
 					{Label: "c"},
+					// namespaces
+					{Label: "//foo:bar", OriginalModuleName: "bar"},       // when referenced from foo namespace
+					{Label: "//foo:bar", OriginalModuleName: "//foo:bar"}, // when referenced from root namespace
 				},
 				Excludes: []Label{
 					{Label: "x"},
@@ -207,6 +214,7 @@
 					{Label: "a"},
 					{Label: "b"},
 					{Label: "c"},
+					{Label: "//foo:bar", OriginalModuleName: "bar"},
 				},
 				Excludes: []Label{
 					{Label: "x"},
diff --git a/rust/compiler.go b/rust/compiler.go
index 84c1fce..e6a7a93 100644
--- a/rust/compiler.go
+++ b/rust/compiler.go
@@ -318,6 +318,15 @@
 		flags.LinkFlags = append(flags.LinkFlags, cc.RpathFlags(ctx)...)
 	}
 
+	if !ctx.toolchain().Bionic() && ctx.Os() != android.LinuxMusl && !ctx.Windows() {
+		// Add -ldl, -lpthread, -lm and -lrt to host builds to match the default behavior of device
+		// builds. This is irrelevant for the Windows target as these are Posix specific.
+		flags.LinkFlags = append(flags.LinkFlags,
+			"-ldl",
+			"-lpthread",
+			"-lm",
+		)
+	}
 	return flags
 }
 
diff --git a/rust/fuzz.go b/rust/fuzz.go
index c2b9405..235f517 100644
--- a/rust/fuzz.go
+++ b/rust/fuzz.go
@@ -25,6 +25,7 @@
 
 func init() {
 	android.RegisterModuleType("rust_fuzz", RustFuzzFactory)
+	android.RegisterModuleType("rust_fuzz_host", RustFuzzHostFactory)
 }
 
 type fuzzDecorator struct {
@@ -43,6 +44,11 @@
 	return module.Init()
 }
 
+func RustFuzzHostFactory() android.Module {
+	module, _ := NewRustFuzz(android.HostSupported)
+	return module.Init()
+}
+
 func NewRustFuzz(hod android.HostOrDeviceSupported) (*Module, *fuzzDecorator) {
 	module, binary := NewRustBinary(hod)
 	fuzz := &fuzzDecorator{
diff --git a/rust/fuzz_test.go b/rust/fuzz_test.go
index 0aecf61..ee28c6d 100644
--- a/rust/fuzz_test.go
+++ b/rust/fuzz_test.go
@@ -34,6 +34,10 @@
 				srcs: ["foo.rs"],
 				rustlibs: ["libtest_fuzzing"],
 			}
+			rust_fuzz_host {
+				name: "host_fuzzer",
+				srcs: ["foo.rs"],
+			}
 	`)
 
 	// Check that appropriate dependencies are added and that the rustlib linkage is correct.
@@ -50,7 +54,13 @@
 	if !strings.Contains(fuzz_libtest.Args["rustcFlags"], "-C passes='sancov-module'") ||
 		!strings.Contains(fuzz_libtest.Args["rustcFlags"], "--cfg fuzzing") {
 		t.Errorf("rust_fuzz module does not contain the expected flags (sancov-module, cfg fuzzing).")
+	}
 
+	// Check that host modules support fuzzing.
+	host_fuzzer := ctx.ModuleForTests("fuzz_libtest", "android_arm64_armv8-a_fuzzer").Rule("rustc")
+	if !strings.Contains(host_fuzzer.Args["rustcFlags"], "-C passes='sancov-module'") ||
+		!strings.Contains(host_fuzzer.Args["rustcFlags"], "--cfg fuzzing") {
+		t.Errorf("rust_fuzz_host module does not contain the expected flags (sancov-module, cfg fuzzing).")
 	}
 
 	// Check that dependencies have 'fuzzer' variants produced for them as well.
diff --git a/rust/library.go b/rust/library.go
index 3f480a2..419fcfc 100644
--- a/rust/library.go
+++ b/rust/library.go
@@ -466,7 +466,15 @@
 		library.includeDirs = append(library.includeDirs, android.PathsForModuleSrc(ctx, library.Properties.Include_dirs)...)
 	}
 	if library.shared() {
-		flags.LinkFlags = append(flags.LinkFlags, "-Wl,-soname="+library.sharedLibFilename(ctx))
+		if ctx.Darwin() {
+			flags.LinkFlags = append(
+				flags.LinkFlags,
+				"-dynamic_lib",
+				"-install_name @rpath/"+library.sharedLibFilename(ctx),
+			)
+		} else {
+			flags.LinkFlags = append(flags.LinkFlags, "-Wl,-soname="+library.sharedLibFilename(ctx))
+		}
 	}
 
 	return flags
diff --git a/rust/rust.go b/rust/rust.go
index dab3532..e2154f0 100644
--- a/rust/rust.go
+++ b/rust/rust.go
@@ -1224,6 +1224,11 @@
 		if _, exists := skipModuleList[depName]; exists {
 			return
 		}
+
+		if depTag == android.DarwinUniversalVariantTag {
+			return
+		}
+
 		if rustDep, ok := dep.(*Module); ok && !rustDep.CcLibraryInterface() {
 			//Handle Rust Modules
 			makeLibName := rustMakeLibName(ctx, mod, rustDep, depName+rustDep.Properties.RustSubName)
diff --git a/rust/sanitize.go b/rust/sanitize.go
index 862baf7..cc19e6e 100644
--- a/rust/sanitize.go
+++ b/rust/sanitize.go
@@ -209,8 +209,8 @@
 	}
 
 	// TODO:(b/178369775)
-	// For now sanitizing is only supported on devices
-	if ctx.Os() == android.Android && (Bool(s.Hwaddress) || Bool(s.Address) || Bool(s.Memtag_heap) || Bool(s.Fuzzer)) {
+	// For now sanitizing is only supported on non-windows targets
+	if ctx.Os() != android.Windows && (Bool(s.Hwaddress) || Bool(s.Address) || Bool(s.Memtag_heap) || Bool(s.Fuzzer)) {
 		sanitize.Properties.SanitizerEnabled = true
 	}
 }
@@ -234,6 +234,11 @@
 
 	if Bool(sanitize.Properties.Sanitize.Address) {
 		flags.RustFlags = append(flags.RustFlags, asanFlags...)
+		if ctx.Host() {
+			// -nodefaultlibs (provided with libc++) prevents the driver from linking
+			// libraries needed with -fsanitize=address. http://b/18650275 (WAI)
+			flags.LinkFlags = append(flags.LinkFlags, []string{"-Wl,--no-as-needed"}...)
+		}
 	}
 	return flags, deps
 }
@@ -273,10 +278,17 @@
 		var deps []string
 
 		if mod.IsSanitizerEnabled(cc.Asan) {
-			variations = append(variations,
-				blueprint.Variation{Mutator: "link", Variation: "shared"})
-			depTag = cc.SharedDepTag()
-			deps = []string{config.LibclangRuntimeLibrary(mod.toolchain(mctx), "asan")}
+			if mod.Host() {
+				variations = append(variations,
+					blueprint.Variation{Mutator: "link", Variation: "static"})
+				depTag = cc.StaticDepTag(false)
+				deps = []string{config.LibclangRuntimeLibrary(mod.toolchain(mctx), "asan.static")}
+			} else {
+				variations = append(variations,
+					blueprint.Variation{Mutator: "link", Variation: "shared"})
+				depTag = cc.SharedDepTag()
+				deps = []string{config.LibclangRuntimeLibrary(mod.toolchain(mctx), "asan")}
+			}
 		} else if mod.IsSanitizerEnabled(cc.Hwasan) {
 			// TODO(b/204776996): HWASan for static Rust binaries isn't supported yet.
 			if binary, ok := mod.compiler.(binaryInterface); ok {
@@ -391,7 +403,8 @@
 }
 
 func (mod *Module) SanitizerSupported(t cc.SanitizerType) bool {
-	if mod.Host() {
+	// Sanitizers are not supported on Windows targets.
+	if mod.Os() == android.Windows {
 		return false
 	}
 	switch t {
@@ -417,7 +430,8 @@
 }
 
 func (mod *Module) IsSanitizerExplicitlyDisabled(t cc.SanitizerType) bool {
-	if mod.Host() {
+	// Sanitizers are not supported on Windows targets.
+	if mod.Os() == android.Windows {
 		return true
 	}
 
diff --git a/rust/testing.go b/rust/testing.go
index 7f30569..3fe751e 100644
--- a/rust/testing.go
+++ b/rust/testing.go
@@ -182,6 +182,7 @@
 	ctx.RegisterModuleType("rust_library_host_dylib", RustLibraryDylibHostFactory)
 	ctx.RegisterModuleType("rust_library_host_rlib", RustLibraryRlibHostFactory)
 	ctx.RegisterModuleType("rust_fuzz", RustFuzzFactory)
+	ctx.RegisterModuleType("rust_fuzz_host", RustFuzzHostFactory)
 	ctx.RegisterModuleType("rust_ffi", RustFFIFactory)
 	ctx.RegisterModuleType("rust_ffi_shared", RustFFISharedFactory)
 	ctx.RegisterModuleType("rust_ffi_static", RustFFIStaticFactory)