diff --git a/internal/platform/BUILD b/internal/platform/BUILD
index 6b7b3aefe4..cd8ca1bdd1 100644
--- a/internal/platform/BUILD
+++ b/internal/platform/BUILD
@@ -553,7 +553,7 @@ cc_test(
         "@com_google_absl//absl/types:variant",
         "@com_google_googletest//:gtest_main",
     ] + select({
-        "@platforms//os:windows": [
+        "//tools/cc_target_os:windows": [
             "//internal/platform/implementation/windows",
         ],
         "//conditions:default": [
diff --git a/internal/platform/implementation/apple/BUILD b/internal/platform/implementation/apple/BUILD
index 14912f31d6..c8eabc864a 100644
--- a/internal/platform/implementation/apple/BUILD
+++ b/internal/platform/implementation/apple/BUILD
@@ -68,7 +68,7 @@ objc_library(
         "//internal/platform/implementation/shared:file",
         "//third_party/objective_c/google_toolbox_for_mac:GTM_Logger",
     ] + select({
-        "@platforms//os:platform_ios": [
+        "//tools/cc_target_os:platform_ios": [
             "//third_party/apple_frameworks:UIKit",
         ],
         "//conditions:default": [],
diff --git a/internal/platform/implementation/apple/Mediums/Ble/Sockets/BUILD b/internal/platform/implementation/apple/Mediums/Ble/Sockets/BUILD
index 20053ca36c..66a6f2632d 100644
--- a/internal/platform/implementation/apple/Mediums/Ble/Sockets/BUILD
+++ b/internal/platform/implementation/apple/Mediums/Ble/Sockets/BUILD
@@ -55,7 +55,7 @@ objc_library(
         "//third_party/apple_frameworks:QuartzCore",
         "//third_party/objective_c/google_toolbox_for_mac:GTM_Logger",
     ] + select({
-        "@platforms//os:platform_ios": [
+        "//tools/cc_target_os:platform_ios": [
             "//third_party/apple_frameworks:UIKit",
         ],
         "//conditions:default": [],
diff --git a/internal/proto/credential.proto b/internal/proto/credential.proto
index 53506e88ce..14e7ca705c 100644
--- a/internal/proto/credential.proto
+++ b/internal/proto/credential.proto
@@ -16,7 +16,6 @@ syntax = "proto3";
 
 package nearby.internal;
 
-// option cc_api_version = 2;
 // option java_api_version = 2;
 option java_multiple_files = true;
 option java_package = "com.google.nearby.presence";
diff --git a/presence/BUILD b/presence/BUILD
index 81458bb8e3..fcfad15774 100644
--- a/presence/BUILD
+++ b/presence/BUILD
@@ -143,7 +143,7 @@ cc_test(
         "@com_google_absl//absl/types:variant",
         "@com_google_googletest//:gtest_main",
     ] + select({
-        "@platforms//os:windows": [
+        "//tools/cc_target_os:windows": [
             "//internal/platform/implementation/windows",
         ],
         "//conditions:default": [
@@ -167,7 +167,7 @@ cc_test(
         "@com_github_protobuf_matchers//protobuf-matchers",
         "@com_google_googletest//:gtest_main",
     ] + select({
-        "@platforms//os:windows": [
+        "//tools/cc_target_os:windows": [
             "//internal/platform/implementation/windows",
         ],
         "//conditions:default": [
@@ -209,7 +209,7 @@ cc_test(
         "@com_google_absl//absl/time",
         "@com_google_googletest//:gtest_main",
     ] + select({
-        "@platforms//os:windows": [
+        "//tools/cc_target_os:windows": [
             "//internal/platform/implementation/windows",
         ],
         "//conditions:default": [
diff --git a/presence/fpp/BUILD b/presence/fpp/BUILD
index 931c75a25e..a4cc41d8f7 100644
--- a/presence/fpp/BUILD
+++ b/presence/fpp/BUILD
@@ -60,7 +60,7 @@ cc_test(
         "@com_google_absl//absl/status",
         "@com_google_googletest//:gtest_main",
     ] + select({
-        "@platforms//os:windows": [
+        "//tools/cc_target_os:windows": [
             "//internal/platform/implementation/windows",
         ],
         "//conditions:default": [
@@ -80,7 +80,7 @@ cc_test(
         "@com_google_absl//absl/status",
         "@com_google_googletest//:gtest_main",
     ] + select({
-        "@platforms//os:windows": [
+        "//tools/cc_target_os:windows": [
             "//internal/platform/implementation/windows",
         ],
         "//conditions:default": [
diff --git a/presence/implementation/BUILD b/presence/implementation/BUILD
index 40cd72389d..bee3281c80 100644
--- a/presence/implementation/BUILD
+++ b/presence/implementation/BUILD
@@ -206,7 +206,7 @@ cc_test(
         "@com_google_absl//absl/strings",
         "@com_google_googletest//:gtest_main",
     ] + select({
-        "@platforms//os:windows": [
+        "//tools/cc_target_os:windows": [
             "//internal/platform/implementation/windows",
         ],
         "//conditions:default": [
@@ -231,7 +231,7 @@ cc_test(
         "@com_google_absl//absl/strings",
         "@com_google_googletest//:gtest_main",
     ] + select({
-        "@platforms//os:windows": [
+        "//tools/cc_target_os:windows": [
             "//internal/platform/implementation/windows",
         ],
         "//conditions:default": [
@@ -253,7 +253,7 @@ cc_test(
         "@com_google_absl//absl/strings",
         "@com_google_googletest//:gtest_main",
     ] + select({
-        "@platforms//os:windows": [
+        "//tools/cc_target_os:windows": [
             "//internal/platform/implementation/windows",
         ],
         "//conditions:default": [
@@ -277,7 +277,7 @@ cc_test(
         "@com_google_absl//absl/strings",
         "@com_google_googletest//:gtest_main",
     ] + select({
-        "@platforms//os:windows": [
+        "//tools/cc_target_os:windows": [
             "//internal/platform/implementation/windows",
         ],
         "//conditions:default": [
@@ -300,7 +300,7 @@ cc_test(
         "@com_github_protobuf_matchers//protobuf-matchers",
         "@com_google_googletest//:gtest_main",
     ] + select({
-        "@platforms//os:windows": [
+        "//tools/cc_target_os:windows": [
             "//internal/platform/implementation/windows",
         ],
         "//conditions:default": [
@@ -321,7 +321,7 @@ cc_test(
         "@com_google_absl//absl/strings",
         "@com_google_googletest//:gtest_main",
     ] + select({
-        "@platforms//os:windows": [
+        "//tools/cc_target_os:windows": [
             "//internal/platform/implementation/windows",
         ],
         "//conditions:default": [
@@ -341,7 +341,7 @@ cc_test(
         "@com_google_absl//absl/types:variant",
         "@com_google_googletest//:gtest_main",
     ] + select({
-        "@platforms//os:windows": [
+        "//tools/cc_target_os:windows": [
             "//internal/platform/implementation/windows",
         ],
         "//conditions:default": [
@@ -361,7 +361,7 @@ cc_test(
         "@com_google_absl//absl/strings",
         "@com_google_googletest//:gtest_main",
     ] + select({
-        "@platforms//os:windows": [
+        "//tools/cc_target_os:windows": [
             "//internal/platform/implementation/windows",
         ],
         "//conditions:default": [
@@ -384,7 +384,7 @@ cc_test(
         "@com_github_protobuf_matchers//protobuf-matchers",
         "@com_google_googletest//:gtest_main",
     ] + select({
-        "@platforms//os:windows": [
+        "//tools/cc_target_os:windows": [
             "//internal/platform/implementation/windows",
         ],
         "//conditions:default": [
@@ -413,7 +413,7 @@ cc_test(
         "@com_google_absl//absl/time",
         "@com_google_googletest//:gtest_main",
     ] + select({
-        "@platforms//os:windows": [
+        "//tools/cc_target_os:windows": [
             "//internal/platform/implementation/windows",
         ],
         "//conditions:default": [
@@ -444,7 +444,7 @@ cc_test(
         "@com_google_absl//absl/types:variant",
         "@com_google_googletest//:gtest_main",
     ] + select({
-        "@platforms//os:windows": [
+        "//tools/cc_target_os:windows": [
             "//internal/platform/implementation/windows",
         ],
         "//conditions:default": [
@@ -475,7 +475,7 @@ cc_test(
         "@com_google_absl//absl/time",
         "@com_google_googletest//:gtest_main",
     ] + select({
-        "@platforms//os:windows": [
+        "//tools/cc_target_os:windows": [
             "//internal/platform/implementation/windows",
         ],
         "//conditions:default": [
diff --git a/presence/implementation/mediums/BUILD b/presence/implementation/mediums/BUILD
index a2592bc74d..9276f7de28 100644
--- a/presence/implementation/mediums/BUILD
+++ b/presence/implementation/mediums/BUILD
@@ -50,7 +50,7 @@ cc_test(
         "@com_github_protobuf_matchers//protobuf-matchers",
         "@com_google_googletest//:gtest_main",
     ] + select({
-        "@platforms//os:windows": [
+        "//tools/cc_target_os:windows": [
             "//internal/platform/implementation/windows",
         ],
         "//conditions:default": [
diff --git a/sharing/BUILD b/sharing/BUILD
index ce0fb7a2c8..2b39436e90 100644
--- a/sharing/BUILD
+++ b/sharing/BUILD
@@ -461,7 +461,7 @@ cc_test(
         "@com_google_absl//absl/time",
         "@com_google_googletest//:gtest_main",
     ] + select({
-        "@platforms//os:windows": [
+        "//tools/cc_target_os:windows": [
             "//internal/platform/implementation/windows",
         ],
         "//conditions:default": [
diff --git a/sharing/internal/base/BUILD b/sharing/internal/base/BUILD
index 6363767533..90aad74195 100644
--- a/sharing/internal/base/BUILD
+++ b/sharing/internal/base/BUILD
@@ -20,6 +20,7 @@ cc_library(
         "utf_string_conversions.h",
     ],
     visibility = ["//visibility:public"],
+    deps = ["//sharing/internal/base/strings"],
 )
 
 cc_library(