dev-libs/protobuf: Version bump (3.12.2).

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

6 files changed, 534 insertions, 3 deletions

diff --git a/dev-libs/protobuf/Manifest b/dev-libs/protobuf/Manifest
index 806addb1d665..4667b310046c 100644
--- a/dev-libs/protobuf/Manifest
+++ b/dev-libs/protobuf/Manifest
@@ -1,2 +1,3 @@
 DIST protobuf-3.10.1.tar.gz 4905995 BLAKE2B 1dde3b6260918da8430c2ce69210462f339c492b2a4e53d5d9c1bea3747aead905370507fc4bd703560f6885c0f3f8393a998b875c19744ad94827109ecbb49f SHA512 aba0c4034c0d3b1759904adb6270eee94dd5dc568f433b219e3f1f70c0033993cdfa3bf476ad3f5767c7629edb9fd029c686405abf93731dde808286b336330d
 DIST protobuf-3.11.4.tar.gz 5140799 BLAKE2B 97b450c0623593efe6a42b66582ff183344b8831689e6a5b4d36096dbd57c33da9569bbf26578536aaf73ecd866ac0588b6cb7d55a6a9b9a6e840d4c57099001 SHA512 777bbb0e9e2375eaebe6b8c87abd660bac70ee469c9ad00dd25917b82d7fb5bbe33cf87f0d69c90e19d55c07a7285ec20974ba4768623ce9ccfadf147fd5e261
+DIST protobuf-3.12.2.tar.gz 5309688 BLAKE2B 6f04ab75a165d8135b4c1de210f8698f56f309f73d664192209de10580e0ef850bf56f6f394b860f21912e341141f7bbb1f63198eaee55fd7ad74d86b00c3b1f SHA512 84a349a1dcb5bce6a6a892cf11264390b557ed1e7b05883b71fa9cfb7460d9f73119da1f2861066869e33c752246ea438d5ce2c2b3ff7a4b07696d9450b7916b
diff --git a/dev-libs/protobuf/files/protobuf-3.12.0-disable_no-warning-test.patch b/dev-libs/protobuf/files/protobuf-3.12.0-disable_no-warning-test.patch
new file mode 100644
index 000000000000..d7dd5b5b1bb9
--- /dev/null
+++ b/dev-libs/protobuf/files/protobuf-3.12.0-disable_no-warning-test.patch
@@ -0,0 +1,19 @@
+Disable no-warning-test which is compiled with -Werror option and whose only purpose is checking if compilation results in any warnings.
+
+--- /src/Makefile.am
++++ /src/Makefile.am
+@@ -717,7 +717,7 @@
+ 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 \
+-                 no-warning-test $(GZCHECKPROGRAMS)
++                 $(GZCHECKPROGRAMS)
+ protobuf_test_LDADD = $(PTHREAD_LIBS) libprotobuf.la libprotoc.la \
+                       $(GOOGLETEST_BUILD_DIR)/lib/libgtest.la     \
+                       $(GOOGLEMOCK_BUILD_DIR)/lib/libgmock.la     \
+@@ -904,4 +904,4 @@
+ 
+ TESTS = protobuf-test protobuf-lazy-descriptor-test protobuf-lite-test \
+         google/protobuf/compiler/zip_output_unittest.sh $(GZTESTS)     \
+-        protobuf-lite-arena-test no-warning-test
++        protobuf-lite-arena-test
diff --git a/dev-libs/protobuf/files/protobuf-3.12.0-protoc_input_output_files.patch b/dev-libs/protobuf/files/protobuf-3.12.0-protoc_input_output_files.patch
new file mode 100644
index 000000000000..3123ae5b27b5
--- /dev/null
+++ b/dev-libs/protobuf/files/protobuf-3.12.0-protoc_input_output_files.patch
@@ -0,0 +1,262 @@
+https://github.com/protocolbuffers/protobuf/pull/235
+
+--- /src/google/protobuf/compiler/command_line_interface.cc
++++ /src/google/protobuf/compiler/command_line_interface.cc
+@@ -997,6 +997,28 @@
+   }
+ 
+   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;
+@@ -1005,13 +1027,20 @@
+       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;
+     }
+   }
+ 
+@@ -1049,6 +1078,11 @@
+   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)) {
+@@ -1750,6 +1784,12 @@
+ 
+     codec_type_ = value;
+ 
++  } 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;
+@@ -1886,29 +1926,50 @@
+          "  -h, --help                  Show this text and exit.\n"
+          "  --encode=MESSAGE_TYPE       Read a text-format message of the "
+          "given type\n"
+-         "                              from standard input and write it in "
+-         "binary\n"
+-         "                              to standard output.  The message type "
+-         "must\n"
++         "                              and write it in binary.  The message "
++         "type must\n"
+          "                              be defined in PROTO_FILES or their "
+          "imports.\n"
++         "                              The input/output protobuf files are "
++         "specified\n"
++         "                              using the --protobuf_in and "
++         "--protobuf_out\n"
++         "                              command line flags.\n"
+          "  --decode=MESSAGE_TYPE       Read a binary message of the given "
+-         "type from\n"
+-         "                              standard input and write it in text "
+-         "format\n"
+-         "                              to standard output.  The message type "
+-         "must\n"
+-         "                              be defined in PROTO_FILES or their "
+-         "imports.\n"
++         "type and\n"
++         "                              write it in text format.  The message "
++         "type\n"
++         "                              must be defined in PROTO_FILES or "
++         "their imports.\n"
++         "                              The input/output protobuf files are "
++         "specified\n"
++         "                              using the --protobuf_in and "
++         "--protobuf_out\n"
++         "                              command line flags.\n"
+          "  --decode_raw                Read an arbitrary protocol message "
+-         "from\n"
+-         "                              standard input and write the raw "
+-         "tag/value\n"
+-         "                              pairs in text format to standard "
+-         "output.  No\n"
++         "and write\n"
++         "                              the raw tag/value pairs in text format."
++         "  No\n"
+          "                              PROTO_FILES should be given when using "
+          "this\n"
+-         "                              flag.\n"
++         "                              flag.  The input/output protobuf files "
++         "are\n"
++         "                              specified using the --protobuf_in and\n"
++         "                              --protobuf_out command line flags.\n"
++         "  --protobuf_in=FILE          Absolute path to the protobuf file "
++         "from which\n"
++         "                              input of encoding/decoding operation "
++         "will be\n"
++         "                              read.  If omitted, input will be read "
++         "from\n"
++         "                              standard input.\n"
++         "  --protobuf_out=FILE         Absolute path to the protobuf file "
++         "to which\n"
++         "                              output of encoding/decoding operation "
++         "will be\n"
++         "                              written.  If omitted, output will be "
++         "written to\n"
++         "                              standard output.\n"
+          "  --descriptor_set_in=FILES   Specifies a delimited list of FILES\n"
+          "                              each containing a FileDescriptorSet "
+          "(a\n"
+@@ -2254,7 +2315,9 @@
+   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) {
+@@ -2266,15 +2329,15 @@
+   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
+@@ -296,7 +296,9 @@
+       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(
+@@ -428,6 +430,13 @@
+   // 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
+@@ -95,7 +95,7 @@
+   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);
+@@ -2625,6 +2625,17 @@
+               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_ =
+@@ -2719,6 +2730,19 @@
+       "net/proto2/internal/no_such_file.proto: No such file or directory\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-3.12.0-system_libraries.patch b/dev-libs/protobuf/files/protobuf-3.12.0-system_libraries.patch
new file mode 100644
index 000000000000..cd7c3493da86
--- /dev/null
+++ b/dev-libs/protobuf/files/protobuf-3.12.0-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
+@@ -223,12 +223,5 @@
+ esac
+ AM_CONDITIONAL([OBJC_CONFORMANCE_TEST], [test $OBJC_CONFORMANCE_TEST = 1])
+ 
+-# HACK:  Make gmock's configure script pick up our copy of CFLAGS and CXXFLAGS,
+-#   since the flags added by ACX_CHECK_SUNCC must be used when compiling gmock
+-#   too.
+-export CFLAGS
+-export CXXFLAGS
+-AC_CONFIG_SUBDIRS([third_party/googletest])
+-
+ AC_CONFIG_FILES([Makefile src/Makefile benchmarks/Makefile conformance/Makefile protobuf.pc protobuf-lite.pc])
+ AC_OUTPUT
+--- /src/Makefile.am
++++ /src/Makefile.am
+@@ -711,19 +711,11 @@
+   google/protobuf/testing/file.cc                              \
+   google/protobuf/testing/file.h
+ 
+-GOOGLETEST_BUILD_DIR=../third_party/googletest/googletest
+-GOOGLEMOCK_BUILD_DIR=../third_party/googletest/googlemock
+-GOOGLETEST_SRC_DIR=$(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.
+@@ -815,12 +807,8 @@
+ # 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                 \
+@@ -841,11 +829,7 @@
+ # 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                                     \
+@@ -857,11 +841,7 @@
+ # 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 \
+@@ -871,8 +851,7 @@
+ 
+ # 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-3.12.2.ebuild b/dev-libs/protobuf/protobuf-3.12.2.ebuild
new file mode 100644
index 000000000000..16f0b7ed8c10
--- /dev/null
+++ b/dev-libs/protobuf/protobuf-3.12.2.ebuild
@@ -0,0 +1,128 @@
+# Copyright 2008-2020 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 -> ${P}.tar.gz"
+fi
+
+LICENSE="BSD"
+SLOT="0/23"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~mips ~ppc ~ppc64 ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~x64-macos ~x86-macos"
+IUSE="emacs examples static-libs test zlib"
+RESTRICT="!test? ( test )"
+
+BDEPEND="emacs? ( app-editors/emacs:* )"
+DEPEND="test? ( >=dev-cpp/gtest-1.9[${MULTILIB_USEDEP}] )
+	zlib? ( sys-libs/zlib[${MULTILIB_USEDEP}] )"
+RDEPEND="emacs? ( app-editors/emacs:* )
+	zlib? ( sys-libs/zlib[${MULTILIB_USEDEP}] )"
+
+PATCHES=(
+	"${FILESDIR}/${PN}-3.12.0-disable_no-warning-test.patch"
+	"${FILESDIR}/${PN}-3.12.0-system_libraries.patch"
+	"${FILESDIR}/${PN}-3.12.0-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
+
+	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 "${WORKDIR}/build/src" protoc
+	fi
+
+	default
+}
+
+multilib_src_test() {
+	emake check
+}
+
+multilib_src_install_all() {
+	find "${D}" -name "*.la" -type f -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
+}
diff --git a/dev-libs/protobuf/protobuf-9999.ebuild b/dev-libs/protobuf/protobuf-9999.ebuild
index 5eddabdf1771..4b1a78fbac4b 100644
--- a/dev-libs/protobuf/protobuf-9999.ebuild
+++ b/dev-libs/protobuf/protobuf-9999.ebuild
@@ -33,9 +33,9 @@ RDEPEND="emacs? ( app-editors/emacs:* )
 	zlib? ( sys-libs/zlib[${MULTILIB_USEDEP}] )"
 
 PATCHES=(
-	"${FILESDIR}/${PN}-3.11.0-disable_no-warning-test.patch"
-	"${FILESDIR}/${PN}-3.11.0-system_libraries.patch"
-	"${FILESDIR}/${PN}-3.11.0-protoc_input_output_files.patch"
+	"${FILESDIR}/${PN}-3.12.0-disable_no-warning-test.patch"
+	"${FILESDIR}/${PN}-3.12.0-system_libraries.patch"
+	"${FILESDIR}/${PN}-3.12.0-protoc_input_output_files.patch"
 )
 
 DOCS=(CHANGES.txt CONTRIBUTORS.txt README.md)