dev-libs/protobuf: Version bump (3.16.0).

Signed-off-by: Arfrever Frehtes Taifersar Arahesis <Arfrever@Apache.Org>
Signed-off-by: Mike Gilbert <floppym@gentoo.org>

4 files changed, 502 insertions, 0 deletions

diff --git a/dev-libs/protobuf/Manifest b/dev-libs/protobuf/Manifest
index 0737b49db14c..42ad9a885e53 100644
--- a/dev-libs/protobuf/Manifest
+++ b/dev-libs/protobuf/Manifest
@@ -9,3 +9,4 @@ DIST protobuf-3.15.5.tar.gz 5283712 BLAKE2B 0da6255302014c885aee47d48344a75ee480
 DIST protobuf-3.15.6.tar.gz 5284018 BLAKE2B 5895f618e233edd5744253821036857aa23f64b76ee3318b99f3530d9dd0c49cc8c386ef15c7394475c2bf0fa33fb631e481fa3fb927c2ab8a88af31234bd0b1 SHA512 673d61b492ce0e85f5c63f3fd7a0174737cc65f7871f79d24380bffa59ea1b312065137ecc63b0f4d4ffa3eb168a09e9c1129c21b0e6c5c3a8c2fabb2cecabb5
 DIST protobuf-3.15.7.tar.gz 5284817 BLAKE2B 43821bb283a0c1f87930593046a5c55f6efae3f644337289fd438c0612a9b7ef9531b61e48940b74dc5d20253ee1b6a805b902284a442dec2efe8c79f82c5aad SHA512 2b18ccba1ff8a0623c52abed0e0674bc6cfa2cd10d49764031a47e68f654f54083f4a4f9e3a94d833a6808426904ee642f173641063e79cb41a61fc348d603ac
 DIST protobuf-3.15.8.tar.gz 5285277 BLAKE2B 798fc011ac03cdc2406acf5845c667d8482082044bdace06c2c1d02b5b1b69c1b1f30e29774180dc1801a1d21d62e2ce50325105859564a1e36d3fe478e64d8b SHA512 56fc6df2dae14eee0fb67dd4204fc1ec54a18d994a69c9e42c7888d0cd50d269d1c5e1445d74f0fa705850d4ac86a22d86781e09769a716e5c6f829b15b05592
+DIST protobuf-3.16.0.tar.gz 5299781 BLAKE2B 9ace02a6038c31b7393671fb2ccd6a4866a3f8b7d87d2bc8371f49d65b9180f10792ca2430a83449dfa7d785a1244dac23c20756414c9d1e7c7e871a8038b123 SHA512 0191e5a6a23d03f691e883e259f6d06a0ac8eef427455bc7d1cc70b6f0ed260e4ad8f360c836fd4bdc95ec0ca314c887cbf7acbcda60e03cdfe69e4cd275bff5
diff --git a/dev-libs/protobuf/files/protobuf-3.16.0-protoc_input_output_files.patch b/dev-libs/protobuf/files/protobuf-3.16.0-protoc_input_output_files.patch
new file mode 100644
index 000000000000..7295e805a196
--- /dev/null
+++ b/dev-libs/protobuf/files/protobuf-3.16.0-protoc_input_output_files.patch
@@ -0,0 +1,240 @@
+https://github.com/protocolbuffers/protobuf/pull/235
+
+--- /src/google/protobuf/compiler/command_line_interface.cc
++++ /src/google/protobuf/compiler/command_line_interface.cc
+@@ -1110,6 +1110,28 @@
+   }
+ 
+   if (mode_ == MODE_ENCODE || mode_ == MODE_DECODE) {
++    bool success = false;
++    int in_fd = STDIN_FILENO;
++    int out_fd = STDOUT_FILENO;
++
++    if (!protobuf_in_path_.empty()) {
++      in_fd = open(protobuf_in_path_.c_str(), O_RDONLY);
++      if (in_fd == -1) {
++        std::cerr << protobuf_in_path_ << ": error: failed to open file." << std::endl;
++        return 1;
++      }
++    }
++    if (!protobuf_out_path_.empty()) {
++      out_fd = open(protobuf_out_path_.c_str(),
++                    O_WRONLY | O_CREAT | O_TRUNC,
++                    0644);
++      if (out_fd == -1) {
++        std::cerr << protobuf_out_path_ << ": error: failed to open file." << std::endl;
++        close(in_fd);
++        return 1;
++      }
++    }
++
+     if (codec_type_.empty()) {
+       // HACK:  Define an EmptyMessage type to use for decoding.
+       DescriptorPool pool;
+@@ -1118,13 +1140,20 @@
+       file.add_message_type()->set_name("EmptyMessage");
+       GOOGLE_CHECK(pool.BuildFile(file) != NULL);
+       codec_type_ = "EmptyMessage";
+-      if (!EncodeOrDecode(&pool)) {
+-        return 1;
+-      }
++      success = EncodeOrDecode(&pool, in_fd, out_fd);
+     } else {
+-      if (!EncodeOrDecode(descriptor_pool.get())) {
+-        return 1;
+-      }
++      success = EncodeOrDecode(descriptor_pool.get(), in_fd, out_fd);
++    }
++
++    if (in_fd != STDIN_FILENO) {
++      close(in_fd);
++    }
++    if (out_fd != STDOUT_FILENO) {
++      close(out_fd);
++    }
++
++    if (!success) {
++      return 1;
+     }
+   }
+ 
+@@ -1163,6 +1192,11 @@
+   for (int i = 0; i < proto_path_.size(); i++) {
+     source_tree->MapPath(proto_path_[i].first, proto_path_[i].second);
+   }
++  if (mode_ == MODE_COMPILE &&
++      (!protobuf_in_path_.empty() || !protobuf_out_path_.empty())) {
++    std::cerr << "--protobuf_in and --protobuf_out are only valid with "
++         << "decode operations. Ignoring.";
++  }
+ 
+   // Map input files to virtual paths if possible.
+   if (!MakeInputsBeProtoPathRelative(source_tree, fallback_database)) {
+@@ -1885,6 +1919,12 @@
+   } else if (name == "--deterministic_output") {
+     deterministic_output_ = true;
+ 
++  } else if (name == "--protobuf_in") {
++    protobuf_in_path_ = value;
++
++  } else if (name == "--protobuf_out") {
++    protobuf_out_path_ = value;
++
+   } else if (name == "--error_format") {
+     if (value == "gcc") {
+       error_format_ = ERROR_FORMAT_GCC;
+@@ -2018,22 +2058,38 @@
+   --version                   Show version info and exit.
+   -h, --help                  Show this text and exit.
+   --encode=MESSAGE_TYPE       Read a text-format message of the given type
+-                              from standard input and write it in binary
+-                              to standard output.  The message type must
++                              from input protobuf file and write it in binary
++                              to output protobuf file.  The message type must
+                               be defined in PROTO_FILES or their imports.
++                              The input/output protobuf files are specified
++                              using the --protobuf_in and --protobuf_out
++                              command line flags.
+   --deterministic_output      When using --encode, ensure map fields are
+                               deterministically ordered. Note that this order
+                               is not canonical, and changes across builds or
+                               releases of protoc.
+   --decode=MESSAGE_TYPE       Read a binary message of the given type from
+-                              standard input and write it in text format
+-                              to standard output.  The message type must
++                              input protobuf file and write it in text format
++                              to output protobuf file.  The message type must
+                               be defined in PROTO_FILES or their imports.
++                              The input/output protobuf files are specified
++                              using the --protobuf_in and --protobuf_out
++                              command line flags.
+   --decode_raw                Read an arbitrary protocol message from
+-                              standard input and write the raw tag/value
+-                              pairs in text format to standard output.  No
++                              input protobuf file and write the raw tag/value
++                              pairs in text format to output protobuf file.  No
+                               PROTO_FILES should be given when using this
+-                              flag.
++                              flag.  The input/output protobuf files are
++                              specified using the --protobuf_in and
++                              --protobuf_out command line flags.
++  --protobuf_in=FILE          Absolute path to the protobuf file from which
++                              input of encoding/decoding operation will be
++                              read.  If omitted, input will be read from
++                              standard input.
++  --protobuf_out=FILE         Absolute path to the protobuf file to which
++                              output of encoding/decoding operation will be
++                              written.  If omitted, output will be written to
++                              standard output.
+   --descriptor_set_in=FILES   Specifies a delimited list of FILES
+                               each containing a FileDescriptorSet (a
+                               protocol buffer defined in descriptor.proto).
+@@ -2344,7 +2400,9 @@
+   return true;
+ }
+ 
+-bool CommandLineInterface::EncodeOrDecode(const DescriptorPool* pool) {
++bool CommandLineInterface::EncodeOrDecode(const DescriptorPool* pool,
++                                          int in_fd,
++                                          int out_fd) {
+   // Look up the type.
+   const Descriptor* type = pool->FindMessageTypeByName(codec_type_);
+   if (type == NULL) {
+@@ -2356,15 +2414,15 @@
+   std::unique_ptr<Message> message(dynamic_factory.GetPrototype(type)->New());
+ 
+   if (mode_ == MODE_ENCODE) {
+-    SetFdToTextMode(STDIN_FILENO);
+-    SetFdToBinaryMode(STDOUT_FILENO);
++    SetFdToTextMode(in_fd);
++    SetFdToBinaryMode(out_fd);
+   } else {
+-    SetFdToBinaryMode(STDIN_FILENO);
+-    SetFdToTextMode(STDOUT_FILENO);
++    SetFdToBinaryMode(in_fd);
++    SetFdToTextMode(out_fd);
+   }
+ 
+-  io::FileInputStream in(STDIN_FILENO);
+-  io::FileOutputStream out(STDOUT_FILENO);
++  io::FileInputStream in(in_fd);
++  io::FileOutputStream out(out_fd);
+ 
+   if (mode_ == MODE_ENCODE) {
+     // Input is text.
+--- /src/google/protobuf/compiler/command_line_interface.h
++++ /src/google/protobuf/compiler/command_line_interface.h
+@@ -292,7 +292,9 @@
+       GeneratorContext* generator_context, std::string* error);
+ 
+   // Implements --encode and --decode.
+-  bool EncodeOrDecode(const DescriptorPool* pool);
++  bool EncodeOrDecode(const DescriptorPool* pool,
++                      int in_fd,
++                      int out_fd);
+ 
+   // Implements the --descriptor_set_out option.
+   bool WriteDescriptorSet(
+@@ -427,6 +429,13 @@
+   // parsed FileDescriptorSets to be used for loading protos.  Otherwise, empty.
+   std::vector<std::string> descriptor_set_in_names_;
+ 
++  // When using --encode / --decode / --decode_raw absolute path to the output
++  // file. (Empty string indicates write to STDOUT).
++  std::string protobuf_out_path_;
++  // When using --encode / --decode / --decode_raw, absolute path to the input
++  // file. (Empty string indicates read from STDIN).
++  std::string protobuf_in_path_;
++
+   // If --descriptor_set_out was given, this is the filename to which the
+   // FileDescriptorSet should be written.  Otherwise, empty.
+   std::string descriptor_set_out_name_;
+--- /src/google/protobuf/compiler/command_line_interface_unittest.cc
++++ /src/google/protobuf/compiler/command_line_interface_unittest.cc
+@@ -99,7 +99,7 @@
+   virtual void SetUp();
+   virtual void TearDown();
+ 
+-  // Runs the CommandLineInterface with the given command line.  The
++  // Run the CommandLineInterface with the given command line.  The
+   // command is automatically split on spaces, and the string "$tmpdir"
+   // is replaced with TestTempDir().
+   void Run(const std::string& command);
+@@ -2626,6 +2626,17 @@
+               std::string::npos);
+   }
+ 
++  void ExpectBinaryFilesMatch(const string &expected_file,
++                              const string &actual_file) {
++    string expected_output, actual_output;
++    ASSERT_TRUE(File::ReadFileToString(expected_file, &expected_output));
++    ASSERT_TRUE(File::ReadFileToString(actual_file, &actual_output));
++
++    // Don't use EXPECT_EQ because we don't want to print raw binary data to
++    // stdout on failure.
++    EXPECT_TRUE(expected_output == actual_output);
++  }
++
+  private:
+   void WriteUnittestProtoDescriptorSet() {
+     unittest_proto_descriptor_set_filename_ =
+@@ -2749,6 +2760,19 @@
+       "Can only use --deterministic_output with --encode.\n");
+ }
+ 
++TEST_P(EncodeDecodeTest, RedirectInputOutput) {
++  string out_file = TestTempDir() + "/golden_message_out.pbf";
++  EXPECT_TRUE(
++      Run(TestUtil::MaybeTranslatePath("net/proto2/internal/unittest.proto") +
++          " --encode=protobuf_unittest.TestAllTypes" +
++          " --protobuf_in=" + TestUtil::GetTestDataPath(
++              "net/proto2/internal/"
++              "testdata/text_format_unittest_data_oneof_implemented.txt") +
++          " --protobuf_out=" + out_file));
++  ExpectBinaryFilesMatch(out_file, TestUtil::GetTestDataPath(
++      "net/proto2/internal/testdata/golden_message_oneof_implemented"));
++}
++
+ INSTANTIATE_TEST_SUITE_P(FileDescriptorSetSource, EncodeDecodeTest,
+                          testing::Values(PROTO_PATH, DESCRIPTOR_SET_IN));
+ }  // anonymous namespace
diff --git a/dev-libs/protobuf/files/protobuf-3.16.0-system_libraries.patch b/dev-libs/protobuf/files/protobuf-3.16.0-system_libraries.patch
new file mode 100644
index 000000000000..5b6f4101e9ca
--- /dev/null
+++ b/dev-libs/protobuf/files/protobuf-3.16.0-system_libraries.patch
@@ -0,0 +1,121 @@
+--- /Makefile.am
++++ /Makefile.am
+@@ -11,28 +11,10 @@
+ # Always include third_party directories in distributions.
+ DIST_SUBDIRS = src conformance benchmarks third_party/googletest
+ 
+-# Build gmock before we build protobuf tests.  We don't add gmock to SUBDIRS
+-# because then "make check" would also build and run all of gmock's own tests,
+-# which takes a lot of time and is generally not useful to us.  Also, we don't
+-# want "make install" to recurse into gmock since we don't want to overwrite
+-# the installed version of gmock if there is one.
+ check-local:
+-	@echo "Making lib/libgmock.a lib/libgmock_main.a in gmock"
+-	@cd third_party/googletest/googletest && $(MAKE) $(AM_MAKEFLAGS) lib/libgtest.la lib/libgtest_main.la
+-	@cd third_party/googletest/googlemock && $(MAKE) $(AM_MAKEFLAGS) lib/libgmock.la lib/libgmock_main.la
+ 
+-# We would like to clean gmock when "make clean" is invoked.  But we have to
+-# be careful because clean-local is also invoked during "make distclean", but
+-# "make distclean" already recurses into gmock because it's listed among the
+-# DIST_SUBDIRS.  distclean will delete gmock/Makefile, so if we then try to
+-# cd to the directory again and "make clean" it will fail.  So, check that the
+-# Makefile exists before recursing.
+ clean-local:
+-	@if test -e third_party/googletest/Makefile; then \
+-	  echo "Making clean in googletest"; \
+-	  cd third_party/googletest && $(MAKE) $(AM_MAKEFLAGS) clean; \
+-	fi; \
+-	if test -e conformance/Makefile; then \
++	@if test -e conformance/Makefile; then \
+ 	  echo "Making clean in conformance"; \
+ 	  cd conformance && $(MAKE) $(AM_MAKEFLAGS) clean; \
+ 	fi; \
+--- /configure.ac
++++ /configure.ac
+@@ -236,12 +236,5 @@
+ fi
+ AC_SUBST([LIBLOG_LIBS])
+ 
+-# HACK:  Make gmock's configure script pick up our copy of CFLAGS and CXXFLAGS,
+-#   since the flags added by ACX_CHECK_SUNCC must be used when compiling gmock
+-#   too.
+-export CFLAGS
+-export CXXFLAGS
+-AC_CONFIG_SUBDIRS([third_party/googletest])
+-
+ AC_CONFIG_FILES([Makefile src/Makefile benchmarks/Makefile conformance/Makefile protobuf.pc protobuf-lite.pc])
+ AC_OUTPUT
+--- /src/Makefile.am
++++ /src/Makefile.am
+@@ -703,19 +703,11 @@
+   google/protobuf/testing/file.cc                              \
+   google/protobuf/testing/file.h
+ 
+-GOOGLETEST_BUILD_DIR=../third_party/googletest/googletest
+-GOOGLEMOCK_BUILD_DIR=../third_party/googletest/googlemock
+-GOOGLETEST_SRC_DIR=$(srcdir)/../third_party/googletest/googletest
+-GOOGLEMOCK_SRC_DIR=$(srcdir)/../third_party/googletest/googlemock
+ check_PROGRAMS = protoc protobuf-test protobuf-lazy-descriptor-test \
+                  protobuf-lite-test test_plugin protobuf-lite-arena-test \
+                  $(GZCHECKPROGRAMS)
+ protobuf_test_LDADD = $(PTHREAD_LIBS) libprotobuf.la libprotoc.la \
+-                      $(GOOGLETEST_BUILD_DIR)/lib/libgtest.la     \
+-                      $(GOOGLEMOCK_BUILD_DIR)/lib/libgmock.la     \
+-                      $(GOOGLEMOCK_BUILD_DIR)/lib/libgmock_main.la
+-protobuf_test_CPPFLAGS = -I$(GOOGLETEST_SRC_DIR)/include \
+-                         -I$(GOOGLEMOCK_SRC_DIR)/include
++                      -lgtest -lgmock -lgmock_main
+ # Disable optimization for tests unless the user explicitly asked for it,
+ # since test_util.cc takes forever to compile with optimization (with GCC).
+ # See configure.ac for more info.
+@@ -807,12 +799,8 @@
+ # Run cpp_unittest again with PROTOBUF_TEST_NO_DESCRIPTORS defined.
+ protobuf_lazy_descriptor_test_LDADD = $(PTHREAD_LIBS) libprotobuf.la \
+                       libprotoc.la                                   \
+-                      $(GOOGLETEST_BUILD_DIR)/lib/libgtest.la        \
+-                      $(GOOGLEMOCK_BUILD_DIR)/lib/libgmock.la        \
+-                      $(GOOGLEMOCK_BUILD_DIR)/lib/libgmock_main.la
+-protobuf_lazy_descriptor_test_CPPFLAGS = -I$(GOOGLEMOCK_SRC_DIR)/include \
+-                                         -I$(GOOGLETEST_SRC_DIR)/include \
+-                                         -DPROTOBUF_TEST_NO_DESCRIPTORS
++                      -lgtest -lgmock -lgmock_main
++protobuf_lazy_descriptor_test_CPPFLAGS = -DPROTOBUF_TEST_NO_DESCRIPTORS
+ protobuf_lazy_descriptor_test_CXXFLAGS = $(NO_OPT_CXXFLAGS)
+ protobuf_lazy_descriptor_test_SOURCES =                        \
+   google/protobuf/compiler/cpp/cpp_unittest.cc                 \
+@@ -833,11 +821,7 @@
+ # full runtime and we want to make sure this test builds without full
+ # runtime.
+ protobuf_lite_test_LDADD = $(PTHREAD_LIBS) libprotobuf-lite.la     \
+-                           $(GOOGLETEST_BUILD_DIR)/lib/libgtest.la \
+-                           $(GOOGLEMOCK_BUILD_DIR)/lib/libgmock.la \
+-                           $(GOOGLEMOCK_BUILD_DIR)/lib/libgmock_main.la
+-protobuf_lite_test_CPPFLAGS= -I$(GOOGLEMOCK_SRC_DIR)/include \
+-                             -I$(GOOGLETEST_SRC_DIR)/include
++                           -lgtest -lgmock -lgmock_main
+ protobuf_lite_test_CXXFLAGS = $(NO_OPT_CXXFLAGS)
+ protobuf_lite_test_SOURCES =                                           \
+   google/protobuf/lite_unittest.cc                                     \
+@@ -849,11 +833,7 @@
+ # gtest when building the test internally our memory sanitizer doesn't detect
+ # memory leaks (don't know why).
+ protobuf_lite_arena_test_LDADD = $(PTHREAD_LIBS) libprotobuf-lite.la \
+-                      $(GOOGLETEST_BUILD_DIR)/lib/libgtest.la        \
+-                      $(GOOGLEMOCK_BUILD_DIR)/lib/libgmock.la        \
+-                      $(GOOGLEMOCK_BUILD_DIR)/lib/libgmock_main.la
+-protobuf_lite_arena_test_CPPFLAGS = -I$(GOOGLEMOCK_SRC_DIR)/include  \
+-                                    -I$(GOOGLETEST_SRC_DIR)/include
++                      -lgtest -lgmock -lgmock_main
+ protobuf_lite_arena_test_CXXFLAGS = $(NO_OPT_CXXFLAGS)
+ protobuf_lite_arena_test_SOURCES =       \
+   google/protobuf/lite_arena_unittest.cc \
+@@ -863,8 +843,7 @@
+ 
+ # Test plugin binary.
+ test_plugin_LDADD = $(PTHREAD_LIBS) libprotobuf.la libprotoc.la \
+-                    $(GOOGLETEST_BUILD_DIR)/lib/libgtest.la
+-test_plugin_CPPFLAGS = -I$(GOOGLETEST_SRC_DIR)/include
++                    -lgtest
+ test_plugin_SOURCES =                                          \
+   google/protobuf/compiler/mock_code_generator.cc              \
+   google/protobuf/testing/file.cc                              \
diff --git a/dev-libs/protobuf/protobuf-3.16.0.ebuild b/dev-libs/protobuf/protobuf-3.16.0.ebuild
new file mode 100644
index 000000000000..ed6e85a966fb
--- /dev/null
+++ b/dev-libs/protobuf/protobuf-3.16.0.ebuild
@@ -0,0 +1,140 @@
+# Copyright 2008-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI="7"
+
+inherit autotools elisp-common flag-o-matic multilib-minimal toolchain-funcs
+
+if [[ "${PV}" == "9999" ]]; then
+	inherit git-r3
+
+	EGIT_REPO_URI="https://github.com/protocolbuffers/protobuf"
+	EGIT_SUBMODULES=()
+fi
+
+DESCRIPTION="Google's Protocol Buffers - Extensible mechanism for serializing structured data"
+HOMEPAGE="https://developers.google.com/protocol-buffers/ https://github.com/protocolbuffers/protobuf"
+if [[ "${PV}" == "9999" ]]; then
+	SRC_URI=""
+else
+	SRC_URI="https://github.com/protocolbuffers/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+fi
+
+LICENSE="BSD"
+SLOT="0/27"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~mips ~ppc ~ppc64 ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~x64-macos"
+IUSE="emacs examples static-libs test zlib"
+RESTRICT="!test? ( test )"
+
+BDEPEND="emacs? ( app-editors/emacs:* )"
+DEPEND="test? ( >=dev-cpp/gtest-1.9[${MULTILIB_USEDEP}] )
+	zlib? ( sys-libs/zlib[${MULTILIB_USEDEP}] )"
+RDEPEND="emacs? ( app-editors/emacs:* )
+	zlib? ( sys-libs/zlib[${MULTILIB_USEDEP}] )"
+
+PATCHES=(
+	"${FILESDIR}/${PN}-3.15.0-disable_no-warning-test.patch"
+	"${FILESDIR}/${PN}-3.16.0-system_libraries.patch"
+	"${FILESDIR}/${PN}-3.16.0-protoc_input_output_files.patch"
+)
+
+DOCS=(CHANGES.txt CONTRIBUTORS.txt README.md)
+
+src_prepare() {
+	default
+
+	# https://github.com/protocolbuffers/protobuf/issues/7413
+	sed -e "/^AC_PROG_CXX_FOR_BUILD$/d" -i configure.ac || die
+
+	# https://github.com/protocolbuffers/protobuf/issues/8082
+	sed -e "/^TEST_F(IoTest, LargeOutput) {$/,/^}$/d" -i src/google/protobuf/io/zero_copy_stream_unittest.cc || die
+
+	# https://github.com/protocolbuffers/protobuf/issues/8459
+	sed \
+		-e "/^TEST(ArenaTest, BlockSizeSmallerThanAllocation) {$/a\\  if (sizeof(void*) == 4) {\n    GTEST_SKIP();\n  }" \
+		-e "/^TEST(ArenaTest, SpaceAllocated_and_Used) {$/a\\  if (sizeof(void*) == 4) {\n    GTEST_SKIP();\n  }" \
+		-i src/google/protobuf/arena_unittest.cc || die
+
+	# https://github.com/protocolbuffers/protobuf/issues/8460
+	sed -e "/^TEST(AnyTest, TestPackFromSerializationExceedsSizeLimit) {$/a\\  if (sizeof(void*) == 4) {\n    GTEST_SKIP();\n  }" -i src/google/protobuf/any_test.cc || die
+
+	eautoreconf
+}
+
+src_configure() {
+	append-cppflags -DGOOGLE_PROTOBUF_NO_RTTI
+
+	if tc-ld-is-gold; then
+		# https://sourceware.org/bugzilla/show_bug.cgi?id=24527
+		tc-ld-disable-gold
+	fi
+
+	multilib-minimal_src_configure
+}
+
+multilib_src_configure() {
+	local options=(
+		$(use_enable static-libs static)
+		$(use_with zlib)
+	)
+
+	if tc-is-cross-compiler; then
+		# Build system uses protoc when building, so protoc copy runnable on host is needed.
+		mkdir -p "${WORKDIR}/build" || die
+		pushd "${WORKDIR}/build" > /dev/null || die
+		ECONF_SOURCE="${S}" econf_build "${options[@]}"
+		options+=(--with-protoc="$(pwd)/src/protoc")
+		popd > /dev/null || die
+	fi
+
+	ECONF_SOURCE="${S}" econf "${options[@]}"
+}
+
+src_compile() {
+	multilib-minimal_src_compile
+
+	if use emacs; then
+		elisp-compile editors/protobuf-mode.el
+	fi
+}
+
+multilib_src_compile() {
+	if tc-is-cross-compiler; then
+		emake -C "${WORKDIR}/build/src" protoc
+	fi
+
+	default
+}
+
+multilib_src_test() {
+	emake check
+}
+
+multilib_src_install_all() {
+	find "${ED}" -name "*.la" -delete || die
+
+	insinto /usr/share/vim/vimfiles/syntax
+	doins editors/proto.vim
+	insinto /usr/share/vim/vimfiles/ftdetect
+	doins "${FILESDIR}/proto.vim"
+
+	if use emacs; then
+		elisp-install ${PN} editors/protobuf-mode.el*
+		elisp-site-file-install "${FILESDIR}/70${PN}-gentoo.el"
+	fi
+
+	if use examples; then
+		DOCS+=(examples)
+		docompress -x /usr/share/doc/${PF}/examples
+	fi
+
+	einstalldocs
+}
+
+pkg_postinst() {
+	use emacs && elisp-site-regen
+}
+
+pkg_postrm() {
+	use emacs && elisp-site-regen
+}