protobuf.patch

diff --git a/BUILD.bazel b/BUILD.bazel
index 0f6e41e3a..c0d2bbccf 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -454,14 +454,79 @@ cc_library(
     visibility = ["//visibility:public"],
 )

+# Envoy: Patch
+
 cc_binary(
-    name = "protoc",
+    name = "compiled_protoc",
     copts = COPTS,
     linkopts = LINK_OPTS,
     visibility = ["//visibility:public"],
     deps = ["//src/google/protobuf/compiler:protoc_lib"],
 )

+# Lifted from `rules_proto`
+config_setting(
+    name = "linux-aarch_64",
+    constraint_values = [
+        "@platforms//os:linux",
+        "@platforms//cpu:aarch64",
+    ],
+)
+
+config_setting(
+    name = "linux-x86_64",
+    constraint_values = [
+        "@platforms//os:linux",
+        "@platforms//cpu:x86_64",
+    ],
+)
+
+config_setting(
+    name = "osx-aarch_64",
+    constraint_values = [
+        "@platforms//os:osx",
+        "@platforms//cpu:aarch64",
+    ],
+)
+
+config_setting(
+    name = "osx-x86_64",
+    constraint_values = [
+        "@platforms//os:osx",
+        "@platforms//cpu:x86_64",
+    ],
+)
+
+config_setting(
+    name = "win64",
+    constraint_values = [
+        "@platforms//os:windows",
+        "@platforms//cpu:x86_64",
+    ],
+)
+
+# Use precompiled binaries where possible.
+alias(
+    name = "protoc",
+    actual = select({
+        ":linux-aarch_64": "@com_google_protobuf_protoc_linux_aarch_64//:protoc",
+        ":linux-x86_64": "@com_google_protobuf_protoc_linux_x86_64//:protoc",
+        ":osx-aarch_64": "@com_google_protobuf_protoc_osx_aarch_64//:protoc",
+        ":osx-x86_64": "@com_google_protobuf_protoc_osx_x86_64//:protoc",
+        ":win64": "@com_google_protobuf_protoc_win64//:protoc",
+        "//conditions:default": ":compiled_protoc",
+    }),
+    visibility = ["//visibility:public"],
+)
+
+alias(
+    name = "protobuf_python_genproto",
+    actual = "//python:well_known_types_py_pb2_genproto",
+    visibility = ["//visibility:public"],
+)
+
+# /Envoy: Patch
+
 cc_binary(
     name = "protoc_static",
     copts = COPTS,
diff --git a/python/google/protobuf/__init__.py b/python/google/protobuf/__init__.py
index e7555ee10..a93beb1c5 100644
--- a/python/google/protobuf/__init__.py
+++ b/python/google/protobuf/__init__.py
@@ -8,3 +8,10 @@
 # Copyright 2007 Google Inc. All Rights Reserved.

 __version__ = '5.26.1'
+
+
+if __name__ != '__main__':
+    try:
+        __import__('pkg_resources').declare_namespace(__name__)
+    except ImportError:
+        __path__ = __import__('pkgutil').extend_path(__path__, __name__)
diff --git a/src/google/protobuf/io/BUILD.bazel b/src/google/protobuf/io/BUILD.bazel
--- a/src/google/protobuf/io/BUILD.bazel
+++ b/src/google/protobuf/io/BUILD.bazel
@@ -138,6 +138,6 @@ cc_library(
         "@com_google_absl//absl/log:absl_log",
     ] + select({
         "//build_defs:config_msvc": [],
-        "//conditions:default": ["@zlib"],
+        "//conditions:default": ["@envoy//bazel/foreign_cc:zlib"],
     }),
 )

diff --git a/src/google/protobuf/port_def.inc b/src/google/protobuf/port_def.inc
--- a/src/google/protobuf/port_def.inc	2023-06-27 01:17:34.917105764 +0000
+++ b/src/google/protobuf/port_def.inc	2023-06-27 01:18:12.069060142 +0000
@@ -1004,7 +1004,7 @@
 #pragma clang diagnostic ignored "-Wshorten-64-to-32"
 // Turn on -Wdeprecated-enum-enum-conversion. This deprecation comes in C++20
 // via http://wg21.link/p1120r0.
-#pragma clang diagnostic error "-Wdeprecated-enum-enum-conversion"
+// #pragma clang diagnostic error "-Wdeprecated-enum-enum-conversion"
 // This error has been generally flaky, but we need to disable it specifically
 // to fix https://github.com/protocolbuffers/protobuf/issues/12313
 #pragma clang diagnostic ignored "-Wunused-parameter"
diff --git a/src/google/protobuf/compiler/BUILD.bazel b/src/google/protobuf/compiler/BUILD.bazel
--- a/src/google/protobuf/compiler/BUILD.bazel
+++ b/src/google/protobuf/compiler/BUILD.bazel
@@ -306,7 +306,7 @@
     srcs = ["retention.cc"],
     hdrs = ["retention.h"],
     strip_include_prefix = "/src",
-    visibility = ["//src/google/protobuf:__subpackages__"],
+    visibility = ["//visibility:public"],
     deps = [
         "//src/google/protobuf",
         "//src/google/protobuf:port",

diff --git a/src/google/protobuf/port_def.inc b/src/google/protobuf/port_def.inc
index 1c6a24945..c27d0bf2a 100644
--- a/src/google/protobuf/port_def.inc
+++ b/src/google/protobuf/port_def.inc
@@ -1062,6 +1062,9 @@ static_assert(PROTOBUF_ABSL_MIN(20230125, 3),
 #pragma warning(disable: 4125)
 #endif

+#if defined(__GNUC__)
+#pragma GCC diagnostic ignored "-Wundef"
+#endif
 #if PROTOBUF_ENABLE_DEBUG_LOGGING_MAY_LEAK_PII
 #define PROTOBUF_DEBUG true
 #else