app-i18n/mozc: Version bump (2.26.4220_p20201212102434_p20201219202429).

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

8 files changed, 1307 insertions, 62 deletions

diff --git a/app-i18n/mozc/Manifest b/app-i18n/mozc/Manifest
index 72d8dc73f386..c9793aee241a 100644
--- a/app-i18n/mozc/Manifest
+++ b/app-i18n/mozc/Manifest
@@ -1,4 +1,7 @@
 DIST fcitx-mozc-2.23.2815.102.1.patch 295112 BLAKE2B 709b84f6eaed16da38a173f40ae7cccff362fd167e6deb4090ae8a9ec522ac8e11ccff3c9ef6433907249af8c9eb4b7be12d2c05564cabd45c25e26764286ed3 SHA512 e0d4645df919838f0fe31a97bf6dd759c222a696f68133f7584d2c771f70734ea634a25bebb03a756221000d3552423207ee5163d75778dbf480b6e267ba4cd0
+DIST fcitx-mozc-2.26.4220-20201219202429.tar.gz 37174759 BLAKE2B 3f320523103ee7a35a763f6613889e282e8a654db8ef11b5a1168db12611387e300621f015977875ffec3c10c055e36b3cb525a1e8559013f3ac42bc5b0cc296 SHA512 823e64267aa69e4d30dd7408f946a54072994f9a2d68691a3d393b216a15e70fd28bcb24705f9d9f483a2291517c48c5a1aeda893d2315f9a1d9cd352fb3feb2
 DIST japanese-usage-dictionary-20120416091336.tar.gz 71051 BLAKE2B 08eecf0aa021e27a2813f58c2d37f1cec760448f6ae086ae7468b8a11575c6ef9f72f656cb4d53e0179b8a7b00f2d91ff51a0ad7825e078dcbac0810f1d8b3e1 SHA512 b7e997a979b6d50e49b9af5dc830ea4df0532f6ab1321b9ef14983f65bb54f1b2967375c82e07957ae7693ebbf43c9b56ecea6bfea8dd1fdaee444bd549d83a7
+DIST japanese-usage-dictionary-20180701040110.tar.gz 71285 BLAKE2B dfad056a1d5061b6764f583da15b9ad60a3c4421cee0430c4665d1c2779a64f9b31473c1746a3e2b9bda5167349432e51dcf7d4d48f75fde9543e9c16ff74c0d SHA512 68b4d3f52dd6cd4f00a8012a870b4f5929519cd69815b1729f3881d1f964802308f4aa101e236824b4c0f832183a9e8097437ed620403f2a652f126e7cdc1eb3
 DIST mozc-2.23.2815.102-protobuf_generated_classes_no_inheritance.patch 40296 BLAKE2B 982f43fa68031eb0f779ec4d034fef838a4fce7834291db889c9edffba3df4acd5bfdf187dd4a52ee8fd0714de943f9d5112070cd69502e1449dab4dbf8543b2 SHA512 6e05b2f22663ddbfb24a8344928ec24c0b4cf523728c1623367970b8f263142af95c056c82d0827414833d5b9f26c3a024a04a688851021601a5cbcc1474e754
 DIST mozc-2.23.2815.102.tar.gz 47739041 BLAKE2B 045a8a4a07e09cf923b67824111cdf672febc30256a6aef951ae779a3f582b3860042750d766120e376898c63be5b4baea870798a192cee34b0d48647e1ec5e6 SHA512 a3face616ca89990bca52371dcc8003604ebe0e9633116a64550add070152b1bc4d9b21e9f102c5afa6f8b1aa11d8dbc4bafbcebfaf4a12a934f085f245d548f
+DIST mozc-2.26.4220-20201212102434.tar.gz 37106063 BLAKE2B 7d3c236809c8feb017f35e3f7a9b024ac34204f483c69913a2d1ae6b771054548f7f81afde35ed3a6887c9f7503584cee0fc646653fc7cde6fd015158de9c3d3 SHA512 9d87947b9b9256a3cc66cb23ab6caf4b6974142090b0d315c101bdc700fd289c259d09cb7f02f5f9e7462f48d652cd2d5b4822a645751fdcaed88b939520c429
diff --git a/app-i18n/mozc/files/mozc-2.26.4220-environmental_variables.patch b/app-i18n/mozc/files/mozc-2.26.4220-environmental_variables.patch
new file mode 100644
index 000000000000..dccdff76f15d
--- /dev/null
+++ b/app-i18n/mozc/files/mozc-2.26.4220-environmental_variables.patch
@@ -0,0 +1,89 @@
+https://github.com/google/mozc/issues/470
+
+--- /src/base/system_util.cc
++++ /src/base/system_util.cc
+@@ -226,6 +226,11 @@
+ 
+ std::string UserProfileDirectoryImpl::GetUserProfileDirectory() const {
+ #if defined(OS_CHROMEOS)
++  const char *configuration_directory_env = Environ::GetEnv("MOZC_CONFIGURATION_DIRECTORY");
++  if (configuration_directory_env) {
++    return configuration_directory_env;
++  }
++
+   // TODO(toka): Must use passed in user profile dir which passed in. If mojo
+   // platform the user profile is determined on runtime.
+   // It's hack, the user profile dir should be passed in. Although the value in
+@@ -245,13 +250,23 @@
+ #elif defined(OS_IOS)
+   // OS_IOS block must be placed before __APPLE__ because both macros are
+   // currently defined on iOS.
+-  //
++
++  const char *configuration_directory_env = Environ::GetEnv("MOZC_CONFIGURATION_DIRECTORY");
++  if (configuration_directory_env) {
++    return configuration_directory_env;
++  }
++
+   // On iOS, use Caches directory instead of Application Spport directory
+   // because the support directory doesn't exist by default.  Also, it is backed
+   // up by iTunes and iCloud.
+   return FileUtil::JoinPath({MacUtil::GetCachesDirectory(), kProductPrefix});
+ 
+ #elif defined(OS_WIN)
++  const char *configuration_directory_env = Environ::GetEnv("MOZC_CONFIGURATION_DIRECTORY");
++  if (configuration_directory_env) {
++    return configuration_directory_env;
++  }
++
+   DCHECK(SUCCEEDED(Singleton<LocalAppDataDirectoryCache>::get()->result()));
+   std::string dir = Singleton<LocalAppDataDirectoryCache>::get()->path();
+ 
+@@ -263,6 +278,11 @@
+ 
+ 
+ #elif defined(__APPLE__)
++  const char *configuration_directory_env = Environ::GetEnv("MOZC_CONFIGURATION_DIRECTORY");
++  if (configuration_directory_env) {
++    return configuration_directory_env;
++  }
++
+   std::string dir = MacUtil::GetApplicationSupportDirectory();
+ # ifdef GOOGLE_JAPANESE_INPUT_BUILD
+   dir = FileUtil::JoinPath(dir, "Google");
+@@ -276,6 +296,11 @@
+ 
+ 
+ #elif defined(OS_LINUX)
++  const char *configuration_directory_env = Environ::GetEnv("MOZC_CONFIGURATION_DIRECTORY");
++  if (configuration_directory_env) {
++    return configuration_directory_env;
++  }
++
+   // 1. If "$HOME/.mozc" already exists,
+   //    use "$HOME/.mozc" for backward compatibility.
+   // 2. If $XDG_CONFIG_HOME is defined
+@@ -395,6 +420,11 @@
+ #endif  // OS_WIN
+ 
+ std::string SystemUtil::GetServerDirectory() {
++  const char *server_directory_env = Environ::GetEnv("MOZC_SERVER_DIRECTORY");
++  if (server_directory_env) {
++    return server_directory_env;
++  }
++
+ #ifdef OS_WIN
+   DCHECK(SUCCEEDED(Singleton<ProgramFilesX86Cache>::get()->result()));
+ # if defined(GOOGLE_JAPANESE_INPUT_BUILD)
+@@ -453,6 +483,11 @@
+ }
+ 
+ std::string SystemUtil::GetDocumentDirectory() {
++  const char *documents_directory_env = Environ::GetEnv("MOZC_DOCUMENTS_DIRECTORY");
++  if (documents_directory_env) {
++    return documents_directory_env;
++  }
++
+ #if defined(__APPLE__)
+   return GetServerDirectory();
+ #elif defined(MOZC_DOCUMENT_DIRECTORY)
diff --git a/app-i18n/mozc/files/mozc-2.26.4220-server_path_check.patch b/app-i18n/mozc/files/mozc-2.26.4220-server_path_check.patch
new file mode 100644
index 000000000000..8dbabeac0038
--- /dev/null
+++ b/app-i18n/mozc/files/mozc-2.26.4220-server_path_check.patch
@@ -0,0 +1,95 @@
+https://github.com/google/mozc/issues/471
+
+--- /src/ipc/ipc_path_manager.cc
++++ /src/ipc/ipc_path_manager.cc
+@@ -340,9 +340,21 @@
+     return false;
+   }
+ 
++  // Expand symbolic links in the expected server path to avoid false negatives
++  // during comparisons of the expected server path and the actual server path.
++  string real_server_path = server_path;
++#ifndef OS_WIN
++  char real_server_path_[PATH_MAX];
++  if (realpath(server_path.c_str(), real_server_path_) == NULL) {
++    LOG(ERROR) << "realpath failed: " << strerror(errno);
++    return false;
++  }
++  real_server_path = real_server_path_;
++#endif
++
+   // compare path name
+   if (pid == server_pid_) {
+-    return (server_path == server_path_);
++    return (real_server_path == server_path_);
+   }
+ 
+   server_pid_ = 0;
+@@ -352,17 +364,17 @@
+   {
+     std::wstring expected_server_ntpath;
+     const std::map<string, std::wstring>::const_iterator it =
+-        expected_server_ntpath_cache_.find(server_path);
++        expected_server_ntpath_cache_.find(real_server_path);
+     if (it != expected_server_ntpath_cache_.end()) {
+       expected_server_ntpath = it->second;
+     } else {
+       std::wstring wide_server_path;
+-      Util::UTF8ToWide(server_path, &wide_server_path);
++      Util::UTF8ToWide(real_server_path, &wide_server_path);
+       if (WinUtil::GetNtPath(wide_server_path, &expected_server_ntpath)) {
+-        // Caches the relationship from |server_path| to
+-        // |expected_server_ntpath| in case |server_path| is renamed later.
++        // Caches the relationship from |real_server_path| to
++        // |expected_server_ntpath| in case |real_server_path| is renamed later.
+         // (This can happen during the updating).
+-        expected_server_ntpath_cache_[server_path] = expected_server_ntpath;
++        expected_server_ntpath_cache_[real_server_path] = expected_server_ntpath;
+       }
+     }
+ 
+@@ -379,9 +391,9 @@
+       return false;
+     }
+ 
+-    // Here we can safely assume that |server_path| (expected one) should be
++    // Here we can safely assume that |real_server_path| (expected one) should be
+     // the same to |server_path_| (actual one).
+-    server_path_ = server_path;
++    server_path_ = real_server_path;
+     server_pid_ = pid;
+   }
+ #endif  // OS_WIN
+@@ -406,7 +418,7 @@
+ #ifdef OS_LINUX
+   // load from /proc/<pid>/exe
+   char proc[128];
+-  char filename[512];
++  char filename[PATH_MAX];
+   absl::SNPrintF(proc, sizeof(proc) - 1, "/proc/%u/exe", pid);
+   const ssize_t size = readlink(proc, filename, sizeof(filename) - 1);
+   if (size == -1) {
+@@ -419,18 +431,18 @@
+   server_pid_ = pid;
+ #endif  // OS_LINUX
+ 
+-  VLOG(1) << "server path: " << server_path << " " << server_path_;
+-  if (server_path == server_path_) {
++  VLOG(1) << "server path: " << real_server_path << " " << server_path_;
++  if (real_server_path == server_path_) {
+     return true;
+   }
+ 
+ #ifdef OS_LINUX
+-  if ((server_path + " (deleted)") == server_path_) {
+-    LOG(WARNING) << server_path << " on disk is modified";
++  if ((real_server_path + " (deleted)") == server_path_) {
++    LOG(WARNING) << real_server_path << " on disk is modified";
+     // If a user updates the server binary on disk during the server is running,
+     // "readlink /proc/<pid>/exe" returns a path with the " (deleted)" suffix.
+     // We allow the special case.
+-    server_path_ = server_path;
++    server_path_ = real_server_path;
+     return true;
+   }
+ #endif  // OS_LINUX
diff --git a/app-i18n/mozc/files/mozc-2.26.4220-system_abseil-cpp.patch b/app-i18n/mozc/files/mozc-2.26.4220-system_abseil-cpp.patch
new file mode 100644
index 000000000000..33f72b8f7a63
--- /dev/null
+++ b/app-i18n/mozc/files/mozc-2.26.4220-system_abseil-cpp.patch
@@ -0,0 +1,407 @@
+https://github.com/google/mozc/issues/490
+
+--- /src/base/absl.gyp
++++ /src/base/absl.gyp
+@@ -28,119 +28,209 @@
+ # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ 
+ {
+-  'variables': {
+-    'absl_srcdir': '<(DEPTH)/third_party/abseil-cpp/absl',
+-    'gen_absl_dir': '<(SHARED_INTERMEDIATE_DIR)/third_party/abseil-cpp/absl',
+-  },
++  'conditions': [
++    ['use_system_abseil_cpp==0', {
++      'variables': {
++        'absl_srcdir': '<(DEPTH)/third_party/abseil-cpp/absl',
++        'gen_absl_dir': '<(SHARED_INTERMEDIATE_DIR)/third_party/abseil-cpp/absl',
++      },
++    }],
++  ],
+   'targets': [
+     {
+       'target_name': 'absl_base',
+-      'type': 'static_library',
+       'toolsets': ['host', 'target'],
+-      'sources': [
+-        '<(absl_srcdir)/base/internal/cycleclock.cc',
+-        '<(absl_srcdir)/base/internal/low_level_alloc.cc',
+-        '<(absl_srcdir)/base/internal/raw_logging.cc',
+-        '<(absl_srcdir)/base/internal/spinlock.cc',
+-        '<(absl_srcdir)/base/internal/spinlock_wait.cc',
+-        '<(absl_srcdir)/base/internal/sysinfo.cc',
+-        '<(absl_srcdir)/base/internal/thread_identity.cc',
+-        '<(absl_srcdir)/base/internal/throw_delegate.cc',
+-        '<(absl_srcdir)/base/internal/unscaledcycleclock.cc',
+-        '<(absl_srcdir)/container/internal/raw_hash_set.cc',
+-        '<(absl_srcdir)/hash/internal/city.cc',
+-        '<(absl_srcdir)/hash/internal/hash.cc',
+-      ],
+-      'msvs_disabled_warnings': [
+-        # 'type' : forcing value to bool 'true' or 'false'
+-        # (performance warning)
+-        # http://msdn.microsoft.com/en-us/library/b6801kcy.aspx
+-        '4800',
++      'conditions': [
++        ['use_system_abseil_cpp==1', {
++          'type': 'none',
++          'all_dependent_settings': {
++            'link_settings': {
++              'libraries': [
++                '-labsl_base -labsl_city -labsl_hash -labsl_malloc_internal -labsl_raw_hash_set -labsl_raw_logging_internal -labsl_spinlock_wait -labsl_throw_delegate',
++              ],
++            },
++          },
++        }, {
++          'type': 'static_library',
++          'sources': [
++            # libabsl_base
++            '<(absl_srcdir)/base/internal/cycleclock.cc',
++            # libabsl_malloc_internal
++            '<(absl_srcdir)/base/internal/low_level_alloc.cc',
++            # libabsl_raw_logging_internal
++            '<(absl_srcdir)/base/internal/raw_logging.cc',
++            # libabsl_base
++            '<(absl_srcdir)/base/internal/spinlock.cc',
++            # libabsl_spinlock_wait
++            '<(absl_srcdir)/base/internal/spinlock_wait.cc',
++            # libabsl_base
++            '<(absl_srcdir)/base/internal/sysinfo.cc',
++            '<(absl_srcdir)/base/internal/thread_identity.cc',
++            # libabsl_throw_delegate
++            '<(absl_srcdir)/base/internal/throw_delegate.cc',
++            # libabsl_base
++            '<(absl_srcdir)/base/internal/unscaledcycleclock.cc',
++            # libabsl_raw_hash_set
++            '<(absl_srcdir)/container/internal/raw_hash_set.cc',
++            # libabsl_city
++            '<(absl_srcdir)/hash/internal/city.cc',
++            # libabsl_hash
++            '<(absl_srcdir)/hash/internal/hash.cc',
++          ],
++          'msvs_disabled_warnings': [
++            # 'type' : forcing value to bool 'true' or 'false'
++            # (performance warning)
++            # http://msdn.microsoft.com/en-us/library/b6801kcy.aspx
++            '4800',
++          ],
++        }],
+       ],
+     },
+     {
+       'target_name': 'absl_numeric',
+-      'type': 'static_library',
+       'toolsets': ['host', 'target'],
+-      'sources': [
+-        '<(absl_srcdir)/numeric/int128.cc',
+-      ],
+-      'dependencies': [
+-        'absl_base',
++      'conditions': [
++        ['use_system_abseil_cpp==1', {
++          'type': 'none',
++          'all_dependent_settings': {
++            'link_settings': {
++              'libraries': [
++                '-labsl_int128',
++              ],
++            },
++          },
++        }, {
++          'type': 'static_library',
++          'sources': [
++            # libabsl_int128
++            '<(absl_srcdir)/numeric/int128.cc',
++          ],
++          'dependencies': [
++            'absl_base',
++          ],
++        }],
+       ],
+     },
+     {
+       'target_name': 'absl_strings_internal',
+-      'type': 'static_library',
+       'toolsets': ['host', 'target'],
+-      'sources': [
+-        '<(absl_srcdir)/strings/internal/charconv_bigint.cc',
+-        '<(absl_srcdir)/strings/internal/charconv_parse.cc',
+-        '<(absl_srcdir)/strings/internal/escaping.cc',
+-        '<(absl_srcdir)/strings/internal/memutil.cc',
+-        '<(absl_srcdir)/strings/internal/str_format/arg.cc',
+-        '<(absl_srcdir)/strings/internal/str_format/bind.cc',
+-        '<(absl_srcdir)/strings/internal/str_format/extension.cc',
+-        '<(absl_srcdir)/strings/internal/str_format/float_conversion.cc',
+-        '<(absl_srcdir)/strings/internal/str_format/output.cc',
+-        '<(absl_srcdir)/strings/internal/str_format/parser.cc',
+-        '<(absl_srcdir)/strings/internal/utf8.cc',
+-      ],
+-      'dependencies': [
+-        'absl_base',
+-        'absl_numeric',
++      'conditions': [
++        ['use_system_abseil_cpp==1', {
++          'type': 'none',
++          'all_dependent_settings': {
++            'link_settings': {
++              'libraries': [
++                '-labsl_strings_internal',
++              ],
++            },
++          },
++        }, {
++          'type': 'static_library',
++          'sources': [
++            # libabsl_strings
++            '<(absl_srcdir)/strings/internal/charconv_bigint.cc',
++            '<(absl_srcdir)/strings/internal/charconv_parse.cc',
++            # libabsl_strings_internal
++            '<(absl_srcdir)/strings/internal/escaping.cc',
++            # libabsl_strings
++            '<(absl_srcdir)/strings/internal/memutil.cc',
++            # libabsl_str_format_internal
++            '<(absl_srcdir)/strings/internal/str_format/arg.cc',
++            '<(absl_srcdir)/strings/internal/str_format/bind.cc',
++            '<(absl_srcdir)/strings/internal/str_format/extension.cc',
++            '<(absl_srcdir)/strings/internal/str_format/float_conversion.cc',
++            '<(absl_srcdir)/strings/internal/str_format/output.cc',
++            '<(absl_srcdir)/strings/internal/str_format/parser.cc',
++            # libabsl_strings_internal
++            '<(absl_srcdir)/strings/internal/utf8.cc',
++          ],
++          'dependencies': [
++            'absl_base',
++            'absl_numeric',
++          ],
++        }],
+       ],
+     },
+     {
+       'target_name': 'absl_strings',
+-      'type': 'static_library',
+       'toolsets': ['host', 'target'],
+-      'sources': [
+-        '<(absl_srcdir)/strings/ascii.cc',
+-        '<(absl_srcdir)/strings/charconv.cc',
+-        '<(absl_srcdir)/strings/escaping.cc',
+-        '<(absl_srcdir)/strings/match.cc',
+-        '<(absl_srcdir)/strings/numbers.cc',
+-        '<(absl_srcdir)/strings/str_cat.cc',
+-        '<(absl_srcdir)/strings/str_replace.cc',
+-        '<(absl_srcdir)/strings/str_split.cc',
+-        '<(absl_srcdir)/strings/string_view.cc',
+-        '<(absl_srcdir)/strings/substitute.cc',
+-      ],
+-      'dependencies': [
+-        'absl_base',
+-        'absl_numeric',
+-        'absl_strings_internal',
++      'conditions': [
++        ['use_system_abseil_cpp==1', {
++          'type': 'none',
++          'all_dependent_settings': {
++            'link_settings': {
++              'libraries': [
++                '-labsl_str_format_internal -labsl_strings -labsl_strings_internal',
++              ],
++            },
++          },
++        }, {
++          'type': 'static_library',
++          'sources': [
++            # libabsl_strings
++            '<(absl_srcdir)/strings/ascii.cc',
++            '<(absl_srcdir)/strings/charconv.cc',
++            '<(absl_srcdir)/strings/escaping.cc',
++            '<(absl_srcdir)/strings/match.cc',
++            '<(absl_srcdir)/strings/numbers.cc',
++            '<(absl_srcdir)/strings/str_cat.cc',
++            '<(absl_srcdir)/strings/str_replace.cc',
++            '<(absl_srcdir)/strings/str_split.cc',
++            '<(absl_srcdir)/strings/string_view.cc',
++            '<(absl_srcdir)/strings/substitute.cc',
++          ],
++          'dependencies': [
++            'absl_base',
++            'absl_numeric',
++            'absl_strings_internal',
++          ],
++        }],
+       ],
+     },
+     {
+       'target_name': 'absl_time',
+-      'type': 'static_library',
+       'toolsets': ['host', 'target'],
+-      'sources': [
+-        '<(absl_srcdir)/time/civil_time.cc',
+-        '<(absl_srcdir)/time/clock.cc',
+-        '<(absl_srcdir)/time/duration.cc',
+-        '<(absl_srcdir)/time/format.cc',
+-        '<(absl_srcdir)/time/time.cc',
+-        '<(absl_srcdir)/time/internal/cctz/src/civil_time_detail.cc',
+-        '<(absl_srcdir)/time/internal/cctz/src/time_zone_fixed.cc',
+-        '<(absl_srcdir)/time/internal/cctz/src/time_zone_format.cc',
+-        '<(absl_srcdir)/time/internal/cctz/src/time_zone_if.cc',
+-        '<(absl_srcdir)/time/internal/cctz/src/time_zone_impl.cc',
+-        '<(absl_srcdir)/time/internal/cctz/src/time_zone_info.cc',
+-        '<(absl_srcdir)/time/internal/cctz/src/time_zone_libc.cc',
+-        '<(absl_srcdir)/time/internal/cctz/src/time_zone_lookup.cc',
+-        '<(absl_srcdir)/time/internal/cctz/src/time_zone_posix.cc',
+-        '<(absl_srcdir)/time/internal/cctz/src/zone_info_source.cc',
+-      ],
+-      'cflags': [
+-        '-Wno-error',
+-      ],
+-      'dependencies': [
+-        'absl_base',
+-        'absl_numeric',
+-        'absl_strings_internal',
++      'conditions': [
++        ['use_system_abseil_cpp==1', {
++          'type': 'none',
++          'all_dependent_settings': {
++            'link_settings': {
++              'libraries': [
++                '-labsl_civil_time -labsl_time -labsl_time_zone',
++              ],
++            },
++          },
++        }, {
++          'type': 'static_library',
++          'sources': [
++            # libabsl_time
++            '<(absl_srcdir)/time/civil_time.cc',
++            '<(absl_srcdir)/time/clock.cc',
++            '<(absl_srcdir)/time/duration.cc',
++            '<(absl_srcdir)/time/format.cc',
++            '<(absl_srcdir)/time/time.cc',
++            # libabsl_civil_time
++            '<(absl_srcdir)/time/internal/cctz/src/civil_time_detail.cc',
++            # libabsl_time_zone
++            '<(absl_srcdir)/time/internal/cctz/src/time_zone_fixed.cc',
++            '<(absl_srcdir)/time/internal/cctz/src/time_zone_format.cc',
++            '<(absl_srcdir)/time/internal/cctz/src/time_zone_if.cc',
++            '<(absl_srcdir)/time/internal/cctz/src/time_zone_impl.cc',
++            '<(absl_srcdir)/time/internal/cctz/src/time_zone_info.cc',
++            '<(absl_srcdir)/time/internal/cctz/src/time_zone_libc.cc',
++            '<(absl_srcdir)/time/internal/cctz/src/time_zone_lookup.cc',
++            '<(absl_srcdir)/time/internal/cctz/src/time_zone_posix.cc',
++            '<(absl_srcdir)/time/internal/cctz/src/zone_info_source.cc',
++          ],
++          'cflags': [
++            '-Wno-error',
++          ],
++          'dependencies': [
++            'absl_base',
++            'absl_numeric',
++            'absl_strings_internal',
++          ],
++        }],
+       ],
+     },
+   ],
+--- /src/config/config_test.gyp
++++ /src/config/config_test.gyp
+@@ -36,6 +36,7 @@
+         'config_handler_test.cc',
+       ],
+       'dependencies': [
++        '../base/absl.gyp:absl_base',
+         '../testing/testing.gyp:gtest_main',
+         '../testing/testing.gyp:mozctest',
+         'config.gyp:config_handler',
+@@ -80,6 +81,7 @@
+         'character_form_manager_test.cc',
+       ],
+       'dependencies': [
++        '../base/absl.gyp:absl_base',
+         '../testing/testing.gyp:gtest_main',
+         'config.gyp:character_form_manager',
+       ],
+--- /src/gyp/common.gypi
++++ /src/gyp/common.gypi
+@@ -194,7 +194,13 @@
+     'include_dirs': [
+       '<(abs_depth)',
+       '<(SHARED_INTERMEDIATE_DIR)',
+-      '<(absl_dir)',
++    ],
++    'conditions': [
++      ['use_system_abseil_cpp==0', {
++        'include_dirs': [
++          '<(absl_dir)',
++        ],
++      }],
+     ],
+     'mac_framework_headers': [],
+     'target_conditions': [
+--- /src/gyp/common_win.gypi
++++ /src/gyp/common_win.gypi
+@@ -307,10 +307,16 @@
+     'include_dirs': [
+       '<(abs_depth)',
+       '<(SHARED_INTERMEDIATE_DIR)',
+-      '<(absl_dir)',
+       '<@(msvs_includes)',
+       '<(wtl_dir)/include',
+     ],
++    'conditions': [
++      ['use_system_abseil_cpp==0', {
++        'include_dirs': [
++          '<(absl_dir)',
++        ],
++      }],
++    ],
+     'msvs_configuration_attributes': {
+       'CharacterSet': '<(win_char_set_unicode)',
+     },
+--- /src/gyp/defines.gypi
++++ /src/gyp/defines.gypi
+@@ -63,6 +63,10 @@
+     # use_libibus represents if ibus library is used or not.
+     # This option is only for Linux.
+     'use_libibus%': '0',
++
++    # use_system_abseil_cpp represents if system version or bundled version
++    # of abseil-cpp library is used.
++    'use_system_abseil_cpp%': '0',
+   },
+   'target_defaults': {
+     'defines': [
+--- /src/gyp/directories.gypi
++++ /src/gyp/directories.gypi
+@@ -31,7 +31,12 @@
+   'variables': {
+     # Top directory of third party libraries.
+     'third_party_dir': '<(DEPTH)/third_party',
+-    'absl_dir': '<(DEPTH)/third_party/abseil-cpp',
++
++    'conditions': [
++      ['use_system_abseil_cpp==0', {
++        'absl_dir': '<(DEPTH)/third_party/abseil-cpp',
++      }],
++    ],
+ 
+     # Top directory of additional third party libraries.
+     'ext_third_party_dir%': '<(abs_depth)/third_party',
+--- /src/session/session_test.gyp
++++ /src/session/session_test.gyp
+@@ -221,6 +221,7 @@
+         'internal/key_event_transformer_test.cc',
+       ],
+       'dependencies': [
++        '../base/absl.gyp:absl_base',
+         '../base/base.gyp:base',
+         '../converter/converter_base.gyp:converter_mock',
+         '../engine/engine.gyp:mock_converter_engine',
+--- /src/storage/storage_test.gyp
++++ /src/storage/storage_test.gyp
+@@ -41,6 +41,7 @@
+         'tiny_storage_test.cc',
+       ],
+       'dependencies': [
++        '../base/absl.gyp:absl_base',
+         '../testing/testing.gyp:gtest_main',
+         'storage.gyp:storage',
+       ],
diff --git a/app-i18n/mozc/files/mozc-2.26.4220-system_gtest.patch b/app-i18n/mozc/files/mozc-2.26.4220-system_gtest.patch
new file mode 100644
index 000000000000..47891fab9b47
--- /dev/null
+++ b/app-i18n/mozc/files/mozc-2.26.4220-system_gtest.patch
@@ -0,0 +1,141 @@
+https://github.com/google/mozc/issues/490
+
+--- /src/gyp/defines.gypi
++++ /src/gyp/defines.gypi
+@@ -67,6 +67,10 @@
+     # use_system_abseil_cpp represents if system version or bundled version
+     # of abseil-cpp library is used.
+     'use_system_abseil_cpp%': '0',
++
++    # use_system_gtest represents if system version or bundled version
++    # of gtest library is used.
++    'use_system_gtest%': '0',
+   },
+   'target_defaults': {
+     'defines': [
+--- /src/testing/testing.gyp
++++ /src/testing/testing.gyp
+@@ -59,54 +59,76 @@
+   'targets': [
+     {
+       'target_name': 'testing',
+-      'type': 'static_library',
+-      'variables': {
+-        'gtest_defines': [
+-          'GTEST_LANG_CXX11=1',
+-          'GTEST_HAS_TR1_TUPLE=0',  # disable tr1 tuple in favor of C++11 tuple.
+-        ],
+-        'gtest_dir': '<(third_party_dir)/gtest/googletest',
+-        'gmock_dir': '<(third_party_dir)/gtest/googlemock',
+-      },
+-      'sources': [
+-        '<(gmock_dir)/src/gmock-cardinalities.cc',
+-        '<(gmock_dir)/src/gmock-internal-utils.cc',
+-        '<(gmock_dir)/src/gmock-matchers.cc',
+-        '<(gmock_dir)/src/gmock-spec-builders.cc',
+-        '<(gmock_dir)/src/gmock.cc',
+-        '<(gtest_dir)/src/gtest-death-test.cc',
+-        '<(gtest_dir)/src/gtest-filepath.cc',
+-        '<(gtest_dir)/src/gtest-matchers.cc',
+-        '<(gtest_dir)/src/gtest-port.cc',
+-        '<(gtest_dir)/src/gtest-printers.cc',
+-        '<(gtest_dir)/src/gtest-test-part.cc',
+-        '<(gtest_dir)/src/gtest-typed-test.cc',
+-        '<(gtest_dir)/src/gtest.cc',
+-      ],
+-      'include_dirs': [
+-        '<(gmock_dir)',
+-        '<(gmock_dir)/include',
+-        '<(gtest_dir)',
+-        '<(gtest_dir)/include',
+-      ],
+-      'defines': [
+-        '<@(gtest_defines)',
+-      ],
+-      'all_dependent_settings': {
+-        'defines': [
+-          '<@(gtest_defines)',
+-        ],
+-        'include_dirs': [
+-          '<(gmock_dir)/include',
+-          '<(gtest_dir)/include',
+-        ],
+-      },
+       'conditions': [
+-        ['(_toolset=="target" and compiler_target=="clang") or '
+-         '(_toolset=="host" and compiler_host=="clang")', {
+-          'cflags': [
+-            '-Wno-missing-field-initializers',
+-            '-Wno-unused-private-field',
++        ['use_system_gtest==1', {
++          'type': 'none',
++          'variables': {
++            'gtest_defines': [
++              'GTEST_LANG_CXX11=1',
++              'GTEST_HAS_TR1_TUPLE=0',  # disable tr1 tuple in favor of C++11 tuple.
++            ],
++          },
++          'all_dependent_settings': {
++            'defines': [
++              '<@(gtest_defines)',
++            ],
++            'link_settings': {
++              'libraries': [
++                '-lgmock -lgtest',
++              ],
++            },
++          },
++        }, {
++          'type': 'static_library',
++          'variables': {
++            'gtest_defines': [
++              'GTEST_LANG_CXX11=1',
++              'GTEST_HAS_TR1_TUPLE=0',  # disable tr1 tuple in favor of C++11 tuple.
++            ],
++            'gtest_dir': '<(third_party_dir)/gtest/googletest',
++            'gmock_dir': '<(third_party_dir)/gtest/googlemock',
++          },
++          'sources': [
++            '<(gmock_dir)/src/gmock-cardinalities.cc',
++            '<(gmock_dir)/src/gmock-internal-utils.cc',
++            '<(gmock_dir)/src/gmock-matchers.cc',
++            '<(gmock_dir)/src/gmock-spec-builders.cc',
++            '<(gmock_dir)/src/gmock.cc',
++            '<(gtest_dir)/src/gtest-death-test.cc',
++            '<(gtest_dir)/src/gtest-filepath.cc',
++            '<(gtest_dir)/src/gtest-matchers.cc',
++            '<(gtest_dir)/src/gtest-port.cc',
++            '<(gtest_dir)/src/gtest-printers.cc',
++            '<(gtest_dir)/src/gtest-test-part.cc',
++            '<(gtest_dir)/src/gtest-typed-test.cc',
++            '<(gtest_dir)/src/gtest.cc',
++          ],
++          'include_dirs': [
++            '<(gmock_dir)',
++            '<(gmock_dir)/include',
++            '<(gtest_dir)',
++            '<(gtest_dir)/include',
++          ],
++          'defines': [
++            '<@(gtest_defines)',
++          ],
++          'all_dependent_settings': {
++            'defines': [
++              '<@(gtest_defines)',
++            ],
++            'include_dirs': [
++              '<(gmock_dir)/include',
++              '<(gtest_dir)/include',
++            ],
++          },
++          'conditions': [
++            ['(_toolset=="target" and compiler_target=="clang") or '
++             '(_toolset=="host" and compiler_host=="clang")', {
++              'cflags': [
++                '-Wno-missing-field-initializers',
++                '-Wno-unused-private-field',
++              ],
++            }],
+           ],
+         }],
+       ],
diff --git a/app-i18n/mozc/files/mozc-2.26.4220-system_jsoncpp.patch b/app-i18n/mozc/files/mozc-2.26.4220-system_jsoncpp.patch
new file mode 100644
index 000000000000..7ff132eaa591
--- /dev/null
+++ b/app-i18n/mozc/files/mozc-2.26.4220-system_jsoncpp.patch
@@ -0,0 +1,117 @@
+https://github.com/google/mozc/issues/490
+
+--- /src/gyp/defines.gypi
++++ /src/gyp/defines.gypi
+@@ -71,6 +71,10 @@
+     # use_system_gtest represents if system version or bundled version
+     # of gtest library is used.
+     'use_system_gtest%': '0',
++
++    # use_system_jsoncpp represents if system version or bundled version
++    # of jsoncpp library is used.
++    'use_system_jsoncpp%': '0',
+   },
+   'target_defaults': {
+     'defines': [
+--- /src/net/jsoncpp.gyp
++++ /src/net/jsoncpp.gyp
+@@ -31,32 +31,60 @@
+   'targets': [
+     {
+       'target_name': 'jsoncpp',
+-      'type': 'static_library',
+-      'variables': {
+-        'jsoncpp_root': '<(third_party_dir)/jsoncpp',
+-        'jsoncpp_srcs': [
+-          '<(jsoncpp_root)/src/lib_json/json_reader.cpp',
+-          '<(jsoncpp_root)/src/lib_json/json_value.cpp',
+-          '<(jsoncpp_root)/src/lib_json/json_writer.cpp',
+-        ],
+-        'jsoncpp_include_dirs': ['<(jsoncpp_root)/include'],
+-        'jsoncpp_additional_macros': ['JSON_USE_EXCEPTION=0'],
+-      },
+-      'defines': [
+-        '<@(jsoncpp_additional_macros)',
++      'conditions': [
++        ['use_system_jsoncpp==1', {
++          'type': 'none',
++          'variables': {
++            'jsoncpp_additional_macros': [
++              'JSON_USE_EXCEPTION=0',
++              'MOZC_USE_SYSTEM_JSONCPP',
++            ],
++          },
++          'all_dependent_settings': {
++            'defines': [
++              '<@(jsoncpp_additional_macros)',
++            ],
++            'cflags': [
++              '<!@(pkg-config --cflags jsoncpp)',
++            ],
++            'link_settings': {
++              'libraries': [
++                '<!@(pkg-config --libs-only-l jsoncpp)',
++              ],
++              'ldflags': [
++                '<!@(pkg-config --libs-only-L jsoncpp)',
++              ],
++            }
++          },
++        }, {
++          'type': 'static_library',
++          'variables': {
++            'jsoncpp_root': '<(third_party_dir)/jsoncpp',
++            'jsoncpp_srcs': [
++              '<(jsoncpp_root)/src/lib_json/json_reader.cpp',
++              '<(jsoncpp_root)/src/lib_json/json_value.cpp',
++              '<(jsoncpp_root)/src/lib_json/json_writer.cpp',
++            ],
++            'jsoncpp_include_dirs': ['<(jsoncpp_root)/include'],
++            'jsoncpp_additional_macros': ['JSON_USE_EXCEPTION=0'],
++          },
++          'defines': [
++            '<@(jsoncpp_additional_macros)',
++          ],
++          'sources': [
++            '<@(jsoncpp_srcs)',
++            'jsoncpp.h',
++          ],
++          'include_dirs': [
++            '<@(jsoncpp_include_dirs)',
++          ],
++          'all_dependent_settings': {
++            'defines': [
++              '<@(jsoncpp_additional_macros)',
++            ],
++          },
++        }],
+       ],
+-      'sources': [
+-        '<@(jsoncpp_srcs)',
+-        'jsoncpp.h',
+-      ],
+-      'include_dirs': [
+-        '<@(jsoncpp_include_dirs)',
+-      ],
+-      'all_dependent_settings': {
+-        'defines': [
+-          '<@(jsoncpp_additional_macros)',
+-        ],
+-      },
+     },
+   ],
+ }
+--- /src/net/jsoncpp.h
++++ /src/net/jsoncpp.h
+@@ -35,7 +35,11 @@
+ // Mozc basically disables C++ exception.
+ #define JSON_USE_EXCEPTION 0
+ #endif  // !JSON_USE_EXCEPTION
++#ifdef MOZC_USE_SYSTEM_JSONCPP
++#include <json/json.h>
++#else
+ #include "third_party/jsoncpp/include/json/json.h"
++#endif
+ #define MOZC_JSONCPP_JSON_H_INCLUDED
+ #endif  // !MOZC_JSONCPP_JSON_H_INCLUDED
+ 
diff --git a/app-i18n/mozc/mozc-2.26.4220_p20201212102434_p20201219202429.ebuild b/app-i18n/mozc/mozc-2.26.4220_p20201212102434_p20201219202429.ebuild
new file mode 100644
index 000000000000..d6d44a3758f6
--- /dev/null
+++ b/app-i18n/mozc/mozc-2.26.4220_p20201212102434_p20201219202429.ebuild
@@ -0,0 +1,380 @@
+# Copyright 2010-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI="7"
+PYTHON_COMPAT=(python{3_7,3_8,3_9})
+
+inherit elisp-common multiprocessing python-any-r1 toolchain-funcs
+
+if [[ "${PV}" == "9999" ]]; then
+	inherit git-r3
+
+	EGIT_REPO_URI="https://github.com/google/mozc"
+	EGIT_SUBMODULES=(src/third_party/japanese_usage_dictionary)
+else
+	MOZC_GIT_REVISION="9ba59b64d53365c1fe93c1c245b4ec3e35bdadf0"
+	MOZC_DATE="${PV#*_p}"
+	MOZC_DATE="${MOZC_DATE%%_p*}"
+
+	FCITX_MOZC_GIT_REVISION="1ea089debc31ff216473369ad71c08318384ee06"
+	FCITX_MOZC_DATE="${PV#*_p}"
+	FCITX_MOZC_DATE="${FCITX_MOZC_DATE#*_p}"
+	FCITX_MOZC_DATE="${FCITX_MOZC_DATE%%_p*}"
+
+	JAPANESE_USAGE_DICTIONARY_GIT_REVISION="a4a66772e33746b91e99caceecced9a28507e925"
+	JAPANESE_USAGE_DICTIONARY_DATE="20180701040110"
+fi
+
+DESCRIPTION="Mozc - Japanese input method editor"
+HOMEPAGE="https://github.com/google/mozc"
+if [[ "${PV}" == "9999" ]]; then
+	SRC_URI=""
+else
+	SRC_URI="https://github.com/google/${PN}/archive/${MOZC_GIT_REVISION}.tar.gz -> ${PN}-${PV%%_p*}-${MOZC_DATE}.tar.gz
+		https://github.com/hiroyuki-komatsu/japanese-usage-dictionary/archive/${JAPANESE_USAGE_DICTIONARY_GIT_REVISION}.tar.gz -> japanese-usage-dictionary-${JAPANESE_USAGE_DICTIONARY_DATE}.tar.gz
+		fcitx4? ( https://github.com/fcitx/${PN}/archive/${FCITX_MOZC_GIT_REVISION}.tar.gz -> fcitx-${PN}-${PV%%_p*}-${FCITX_MOZC_DATE}.tar.gz )"
+fi
+
+# Mozc: BSD
+# src/data/dictionary_oss: ipadic, public-domain
+# src/data/unicode: unicode
+# japanese-usage-dictionary: BSD-2
+LICENSE="BSD BSD-2 ipadic public-domain unicode"
+SLOT="0"
+KEYWORDS="~amd64 ~ppc64 ~x86"
+IUSE="debug emacs fcitx4 +gui ibus renderer test"
+REQUIRED_USE="|| ( emacs fcitx4 ibus )"
+RESTRICT="!test? ( test )"
+
+BDEPEND="$(python_gen_any_dep 'dev-python/six[${PYTHON_USEDEP}]')
+	>=dev-libs/protobuf-3.0.0
+	dev-util/gyp
+	dev-util/ninja
+	virtual/pkgconfig
+	emacs? ( app-editors/emacs:* )
+	fcitx4? ( sys-devel/gettext )"
+DEPEND=">=dev-cpp/abseil-cpp-20200923[cxx17(+)]
+	>=dev-libs/protobuf-3.0.0:=
+	fcitx4? (
+		app-i18n/fcitx:4
+		virtual/libintl
+	)
+	gui? (
+		dev-qt/qtcore:5
+		dev-qt/qtgui:5
+		dev-qt/qtwidgets:5
+	)
+	ibus? (
+		>=app-i18n/ibus-1.4.1
+		dev-libs/glib:2
+		x11-libs/libxcb
+	)
+	renderer? (
+		dev-libs/glib:2
+		x11-libs/cairo
+		x11-libs/gtk+:2
+		x11-libs/pango
+	)
+	test? (
+		>=dev-cpp/gtest-1.8.0
+		dev-libs/jsoncpp
+	)"
+RDEPEND=">=dev-cpp/abseil-cpp-20200923[cxx17(+)]
+	>=dev-libs/protobuf-3.0.0:=
+	emacs? ( app-editors/emacs:* )
+	fcitx4? (
+		app-i18n/fcitx:4
+		virtual/libintl
+	)
+	gui? (
+		dev-qt/qtcore:5
+		dev-qt/qtgui:5
+		dev-qt/qtwidgets:5
+	)
+	ibus? (
+		>=app-i18n/ibus-1.4.1
+		dev-libs/glib:2
+		x11-libs/libxcb
+	)
+	renderer? (
+		dev-libs/glib:2
+		x11-libs/cairo
+		x11-libs/gtk+:2
+		x11-libs/pango
+	)"
+
+S="${WORKDIR}/${P}/src"
+
+SITEFILE="50${PN}-gentoo.el"
+
+execute() {
+	einfo "$@"
+	"$@"
+}
+
+python_check_deps() {
+	has_version -b "dev-python/six[${PYTHON_USEDEP}]"
+}
+
+src_unpack() {
+	if [[ "${PV}" == "9999" ]]; then
+		git-r3_src_unpack
+
+		if use fcitx4; then
+			local EGIT_SUBMODULES=()
+			git-r3_fetch https://github.com/fcitx/mozc refs/heads/fcitx
+			git-r3_checkout https://github.com/fcitx/mozc "${WORKDIR}/fcitx-mozc"
+		fi
+	else
+		unpack ${PN}-${PV%%_p*}-${MOZC_DATE}.tar.gz
+		mv mozc-${MOZC_GIT_REVISION} ${P} || die
+
+		unpack japanese-usage-dictionary-${JAPANESE_USAGE_DICTIONARY_DATE}.tar.gz
+		cp -p japanese-usage-dictionary-${JAPANESE_USAGE_DICTIONARY_GIT_REVISION}/usage_dict.txt ${P}/src/third_party/japanese_usage_dictionary || die
+
+		if use fcitx4; then
+			unpack fcitx-${PN}-${PV%%_p*}-${FCITX_MOZC_DATE}.tar.gz
+			mv mozc-${FCITX_MOZC_GIT_REVISION} fcitx-${PN}
+		fi
+	fi
+}
+
+src_prepare() {
+	if use fcitx4; then
+		cp -pr "${WORKDIR}/fcitx-mozc/src/unix/fcitx" unix || die
+	fi
+
+	pushd "${WORKDIR}/${P}" > /dev/null || die
+
+	eapply "${FILESDIR}/${PN}-2.26.4220-system_abseil-cpp.patch"
+	eapply "${FILESDIR}/${PN}-2.26.4220-system_gtest.patch"
+	eapply "${FILESDIR}/${PN}-2.26.4220-system_jsoncpp.patch"
+	eapply "${FILESDIR}/${PN}-2.26.4220-environmental_variables.patch"
+	eapply "${FILESDIR}/${PN}-2.26.4220-server_path_check.patch"
+
+	eapply_user
+
+	popd > /dev/null || die
+
+	sed \
+		-e "s/def GypMain(options, unused_args):/def GypMain(options, gyp_args):/" \
+		-e "s/RunOrDie(gyp_command + gyp_options)/RunOrDie(gyp_command + gyp_options + gyp_args)/" \
+		-e "s/RunOrDie(\[ninja/&, '-j$(makeopts_jobs)', '-l$(makeopts_loadavg "${MAKEOPTS}" 0)', '-v'/" \
+		-i build_mozc.py || die
+
+	local ar=($(tc-getAR))
+	local cc=($(tc-getCC))
+	local cxx=($(tc-getCXX))
+	local ld=($(tc-getLD))
+	local nm=($(tc-getNM))
+	local readelf=($(tc-getREADELF))
+
+	# Use absolute paths. Non-absolute paths are mishandled by GYP.
+	ar[0]=$(type -P ${ar[0]})
+	cc[0]=$(type -P ${cc[0]})
+	cxx[0]=$(type -P ${cxx[0]})
+	ld[0]=$(type -P ${ld[0]})
+	nm[0]=$(type -P ${nm[0]})
+	readelf[0]=$(type -P ${readelf[0]})
+
+	sed \
+		-e "s:<!(which ar):${ar[@]}:" \
+		-e "s:<!(which clang):${cc[@]}:" \
+		-e "s:<!(which clang++):${cxx[@]}:" \
+		-e "s:<!(which ld):${ld[@]}:" \
+		-e "s:<!(which nm):${nm[@]}:" \
+		-e "s:<!(which readelf):${readelf[@]}:" \
+		-i gyp/common.gypi || die
+
+	# https://github.com/google/mozc/issues/489
+	sed \
+		-e "/'-lc++'/d" \
+		-e "/'-stdlib=libc++'/d" \
+		-i gyp/common.gypi || die
+}
+
+src_configure() {
+	if use debug; then
+		BUILD_TYPE="Debug"
+	else
+		BUILD_TYPE="Release"
+	fi
+
+	local gyp_arguments=()
+
+	if tc-is-gcc; then
+		gyp_arguments+=(-D compiler_host=gcc -D compiler_target=gcc)
+	elif tc-is-clang; then
+		gyp_arguments+=(-D compiler_host=clang -D compiler_target=clang)
+	else
+		gyp_arguments+=(-D compiler_host=unknown -D compiler_target=unknown)
+	fi
+
+	gyp_arguments+=(-D debug_extra_cflags=)
+	gyp_arguments+=(-D release_extra_cflags=)
+
+	gyp_arguments+=(-D use_fcitx=$(usex fcitx4 YES NO))
+	gyp_arguments+=(-D use_libibus=$(usex ibus 1 0))
+	gyp_arguments+=(-D use_libprotobuf=1)
+	gyp_arguments+=(-D use_system_abseil_cpp=1)
+	gyp_arguments+=(-D use_system_gtest=$(usex test 1 0))
+	gyp_arguments+=(-D use_system_jsoncpp=$(usex test 1 0))
+	gyp_arguments+=(-D enable_gtk_renderer=$(usex renderer 1 0))
+
+	gyp_arguments+=(-D server_dir="${EPREFIX}/usr/libexec/mozc")
+	gyp_arguments+=(-D document_dir="${EPREFIX}/usr/libexec/mozc/documents")
+
+	if use ibus; then
+		gyp_arguments+=(-D ibus_mozc_path="${EPREFIX}/usr/libexec/ibus-engine-mozc")
+		gyp_arguments+=(-D ibus_mozc_icon_path="${EPREFIX}/usr/share/ibus-mozc/product_icon.png")
+	fi
+
+	unset AR CC CXX LD NM READELF
+
+	execute "${PYTHON}" build_mozc.py gyp \
+		--gypdir="${EPREFIX}/usr/bin" \
+		--server_dir="${EPREFIX}/usr/libexec/mozc" \
+		--verbose \
+		$(usex gui "" --noqt) \
+		-- "${gyp_arguments[@]}" || die "Configuration failed"
+}
+
+src_compile() {
+	local targets=(server/server.gyp:mozc_server)
+	if use emacs; then
+		targets+=(unix/emacs/emacs.gyp:mozc_emacs_helper)
+	fi
+	if use fcitx4; then
+		targets+=(unix/fcitx/fcitx.gyp:fcitx-mozc)
+	fi
+	if use gui; then
+		targets+=(gui/gui.gyp:mozc_tool)
+	fi
+	if use ibus; then
+		targets+=(unix/ibus/ibus.gyp:ibus_mozc)
+	fi
+	if use renderer; then
+		targets+=(renderer/renderer.gyp:mozc_renderer)
+	fi
+	if use test; then
+		targets+=(gyp/tests.gyp:unittests)
+	fi
+
+	execute "${PYTHON}" build_mozc.py build -c ${BUILD_TYPE} -v "${targets[@]}" || die "Building failed"
+
+	if use emacs; then
+		elisp-compile unix/emacs/*.el
+	fi
+}
+
+src_test() {
+	execute "${PYTHON}" build_mozc.py runtests -c ${BUILD_TYPE} --test_jobs 1 || die "Testing failed"
+}
+
+src_install() {
+	exeinto /usr/libexec/mozc
+	doexe out_linux/${BUILD_TYPE}/mozc_server
+
+	if use gui; then
+		doexe out_linux/${BUILD_TYPE}/mozc_tool
+	fi
+
+	if use renderer; then
+		doexe out_linux/${BUILD_TYPE}/mozc_renderer
+	fi
+
+	insinto /usr/libexec/mozc/documents
+	doins data/installer/credits_en.html
+
+	if use emacs; then
+		dobin out_linux/${BUILD_TYPE}/mozc_emacs_helper
+		elisp-install ${PN} unix/emacs/*.{el,elc}
+		elisp-site-file-install "${FILESDIR}/${SITEFILE}" ${PN}
+	fi
+
+	if use fcitx4; then
+		exeinto /usr/$(get_libdir)/fcitx
+		doexe out_linux/${BUILD_TYPE}/fcitx-mozc.so
+
+		insinto /usr/share/fcitx/addon
+		doins unix/fcitx/fcitx-mozc.conf
+
+		insinto /usr/share/fcitx/inputmethod
+		doins unix/fcitx/mozc.conf
+
+		insinto /usr/share/fcitx/mozc/icon
+		newins data/images/product_icon_32bpp-128.png mozc.png
+		local image
+		for image in ../../fcitx-${PN}/src/data/images/unix/ui-*.png; do
+			newins "${image}" "mozc-${image#../../fcitx-${PN}/src/data/images/unix/ui-}"
+		done
+
+		local locale mo_file
+		for mo_file in out_linux/${BUILD_TYPE}/gen/unix/fcitx/po/*.mo; do
+			locale="${mo_file##*/}"
+			locale="${locale%.mo}"
+			insinto /usr/share/locale/${locale}/LC_MESSAGES
+			newins "${mo_file}" fcitx-mozc.mo
+		done
+	fi
+
+	if use ibus; then
+		exeinto /usr/libexec
+		newexe out_linux/${BUILD_TYPE}/ibus_mozc ibus-engine-mozc
+
+		insinto /usr/share/ibus/component
+		doins out_linux/${BUILD_TYPE}/gen/unix/ibus/mozc.xml
+
+		insinto /usr/share/ibus-mozc
+		newins data/images/unix/ime_product_icon_opensource-32.png product_icon.png
+		local image
+		for image in data/images/unix/ui-*.png; do
+			newins "${image}" "${image#data/images/unix/ui-}"
+		done
+	fi
+}
+
+pkg_postinst() {
+	elog
+	elog "ENVIRONMENTAL VARIABLES"
+	elog
+	elog "MOZC_SERVER_DIRECTORY"
+	elog "  Mozc server directory"
+	elog "  Value used by default: \"${EPREFIX}/usr/libexec/mozc\""
+	elog "MOZC_DOCUMENTS_DIRECTORY"
+	elog "  Mozc documents directory"
+	elog "  Value used by default: \"${EPREFIX}/usr/libexec/mozc/documents\""
+	elog "MOZC_CONFIGURATION_DIRECTORY"
+	elog "  Mozc configuration directory"
+	elog "  Value used by default: \"~/.mozc\""
+	elog
+	if use emacs; then
+		elog
+		elog "USAGE IN EMACS"
+		elog
+		elog "mozc-mode is minor mode to input Japanese text using Mozc server."
+		elog "mozc-mode can be used via LEIM (Library of Emacs Input Method)."
+		elog
+		elog "In order to use mozc-mode by default, the following settings should be added to"
+		elog "Emacs init file (~/.emacs.d/init.el or ~/.emacs):"
+		elog
+		elog "  (require 'mozc)"
+		elog "  (set-language-environment \"Japanese\")"
+		elog "  (setq default-input-method \"japanese-mozc\")"
+		elog
+		elog "With the above settings, typing C-\\ (which is bound to \"toggle-input-method\""
+		elog "by default) will enable mozc-mode."
+		elog
+		elog "Alternatively, at run time, after loading mozc.el, mozc-mode can be activated by"
+		elog "calling \"set-input-method\" and entering \"japanese-mozc\"."
+		elog
+
+		elisp-site-regen
+	fi
+}
+
+pkg_postrm() {
+	if use emacs; then
+		elisp-site-regen
+	fi
+}
diff --git a/app-i18n/mozc/mozc-9999.ebuild b/app-i18n/mozc/mozc-9999.ebuild
index b93a912f62ea..020c3b037550 100644
--- a/app-i18n/mozc/mozc-9999.ebuild
+++ b/app-i18n/mozc/mozc-9999.ebuild
@@ -13,9 +13,16 @@ if [[ "${PV}" == "9999" ]]; then
 	EGIT_SUBMODULES=(src/third_party/japanese_usage_dictionary)
 else
 	MOZC_GIT_REVISION=""
+	MOZC_DATE="${PV#*_p}"
+	MOZC_DATE="${MOZC_DATE%%_p*}"
+
+	FCITX_MOZC_GIT_REVISION=""
+	FCITX_MOZC_DATE="${PV#*_p}"
+	FCITX_MOZC_DATE="${FCITX_MOZC_DATE#*_p}"
+	FCITX_MOZC_DATE="${FCITX_MOZC_DATE%%_p*}"
+
 	JAPANESE_USAGE_DICTIONARY_GIT_REVISION=""
 	JAPANESE_USAGE_DICTIONARY_DATE=""
-	FCITX_PATCH_VERSION=""
 fi
 
 DESCRIPTION="Mozc - Japanese input method editor"
@@ -23,10 +30,9 @@ HOMEPAGE="https://github.com/google/mozc"
 if [[ "${PV}" == "9999" ]]; then
 	SRC_URI=""
 else
-	SRC_URI="https://github.com/google/${PN}/archive/${MOZC_GIT_REVISION}.tar.gz -> ${P}.tar.gz
+	SRC_URI="https://github.com/google/${PN}/archive/${MOZC_GIT_REVISION}.tar.gz -> ${PN}-${PV%%_p*}-${MOZC_DATE}.tar.gz
 		https://github.com/hiroyuki-komatsu/japanese-usage-dictionary/archive/${JAPANESE_USAGE_DICTIONARY_GIT_REVISION}.tar.gz -> japanese-usage-dictionary-${JAPANESE_USAGE_DICTIONARY_DATE}.tar.gz
-	https://dev.gentoo.org/~juippis/distfiles/tmp/mozc-2.23.2815.102-protobuf_generated_classes_no_inheritance.patch
-		fcitx4? ( https://download.fcitx-im.org/fcitx-mozc/fcitx-mozc-${FCITX_PATCH_VERSION}.patch )"
+		fcitx4? ( https://github.com/fcitx/${PN}/archive/${FCITX_MOZC_GIT_REVISION}.tar.gz -> fcitx-${PN}-${PV%%_p*}-${FCITX_MOZC_DATE}.tar.gz )"
 fi
 
 # Mozc: BSD
@@ -36,30 +42,27 @@ fi
 LICENSE="BSD BSD-2 ipadic public-domain unicode"
 SLOT="0"
 KEYWORDS=""
-IUSE="debug emacs fcitx4 +gui +handwriting-tegaki handwriting-tomoe ibus renderer test"
-REQUIRED_USE="|| ( emacs fcitx4 ibus ) gui? ( ^^ ( handwriting-tegaki handwriting-tomoe ) ) !gui? ( !handwriting-tegaki !handwriting-tomoe )"
+IUSE="debug emacs fcitx4 +gui ibus renderer test"
+REQUIRED_USE="|| ( emacs fcitx4 ibus )"
 RESTRICT="!test? ( test )"
 
-BDEPEND="${PYTHON_DEPS}
+BDEPEND="$(python_gen_any_dep 'dev-python/six[${PYTHON_USEDEP}]')
 	>=dev-libs/protobuf-3.0.0
 	dev-util/gyp
 	dev-util/ninja
 	virtual/pkgconfig
 	emacs? ( app-editors/emacs:* )
 	fcitx4? ( sys-devel/gettext )"
-RDEPEND=">=dev-libs/protobuf-3.0.0:=
-	emacs? ( app-editors/emacs:* )
+DEPEND=">=dev-cpp/abseil-cpp-20200923[cxx17(+)]
+	>=dev-libs/protobuf-3.0.0:=
 	fcitx4? (
 		app-i18n/fcitx:4
 		virtual/libintl
 	)
 	gui? (
-		app-i18n/zinnia
 		dev-qt/qtcore:5
 		dev-qt/qtgui:5
 		dev-qt/qtwidgets:5
-		handwriting-tegaki? ( app-i18n/tegaki-zinnia-japanese )
-		handwriting-tomoe? ( app-i18n/zinnia-tomoe )
 	)
 	ibus? (
 		>=app-i18n/ibus-1.4.1
@@ -71,12 +74,34 @@ RDEPEND=">=dev-libs/protobuf-3.0.0:=
 		x11-libs/cairo
 		x11-libs/gtk+:2
 		x11-libs/pango
-	)"
-DEPEND="${RDEPEND}
+	)
 	test? (
 		>=dev-cpp/gtest-1.8.0
 		dev-libs/jsoncpp
 	)"
+RDEPEND=">=dev-cpp/abseil-cpp-20200923[cxx17(+)]
+	>=dev-libs/protobuf-3.0.0:=
+	emacs? ( app-editors/emacs:* )
+	fcitx4? (
+		app-i18n/fcitx:4
+		virtual/libintl
+	)
+	gui? (
+		dev-qt/qtcore:5
+		dev-qt/qtgui:5
+		dev-qt/qtwidgets:5
+	)
+	ibus? (
+		>=app-i18n/ibus-1.4.1
+		dev-libs/glib:2
+		x11-libs/libxcb
+	)
+	renderer? (
+		dev-libs/glib:2
+		x11-libs/cairo
+		x11-libs/gtk+:2
+		x11-libs/pango
+	)"
 
 S="${WORKDIR}/${P}/src"
 
@@ -87,6 +112,10 @@ execute() {
 	"$@"
 }
 
+python_check_deps() {
+	has_version -b "dev-python/six[${PYTHON_USEDEP}]"
+}
+
 src_unpack() {
 	if [[ "${PV}" == "9999" ]]; then
 		git-r3_src_unpack
@@ -97,55 +126,48 @@ src_unpack() {
 			git-r3_checkout https://github.com/fcitx/mozc "${WORKDIR}/fcitx-mozc"
 		fi
 	else
-		unpack ${P}.tar.gz
+		unpack ${PN}-${PV%%_p*}-${MOZC_DATE}.tar.gz
 		mv mozc-${MOZC_GIT_REVISION} ${P} || die
 
 		unpack japanese-usage-dictionary-${JAPANESE_USAGE_DICTIONARY_DATE}.tar.gz
 		cp -p japanese-usage-dictionary-${JAPANESE_USAGE_DICTIONARY_GIT_REVISION}/usage_dict.txt ${P}/src/third_party/japanese_usage_dictionary || die
+
+		if use fcitx4; then
+			unpack fcitx-${PN}-${PV%%_p*}-${FCITX_MOZC_DATE}.tar.gz
+			mv mozc-${FCITX_MOZC_GIT_REVISION} fcitx-${PN}
+		fi
 	fi
 }
 
 src_prepare() {
-	eapply -p2 "${FILESDIR}/${PN}-2.23.2815.102-python-3_1.patch"
-	eapply -p2 "${FILESDIR}/${PN}-2.23.2815.102-python-3_2.patch"
-	eapply -p2 "${FILESDIR}/${PN}-2.23.2815.102-python-3_3.patch"
-	eapply -p2 "${FILESDIR}/${PN}-2.23.2815.102-python-3_4.patch"
-	eapply -p2 "${FILESDIR}/${PN}-2.23.2815.102-system_libraries.patch"
-	eapply -p2 "${FILESDIR}/${PN}-2.23.2815.102-gcc-8.patch"
-	eapply -p2 "${DISTDIR}/${PN}-2.23.2815.102-protobuf_generated_classes_no_inheritance.patch"
-	eapply -p2 "${FILESDIR}/${PN}-2.23.2815.102-environmental_variables.patch"
-	eapply -p2 "${FILESDIR}/${PN}-2.23.2815.102-reiwa.patch"
-	eapply -p2 "${FILESDIR}/${PN}-2.23.2815.102-server_path_check.patch"
-	eapply -p2 "${FILESDIR}/${PN}-2.20.2673.102-tests_build.patch"
-	eapply -p2 "${FILESDIR}/${PN}-2.20.2673.102-tests_skipping.patch"
-
 	if use fcitx4; then
-		if [[ "${PV}" == "9999" ]]; then
-			cp -pr "${WORKDIR}/fcitx-mozc/src/unix/fcitx" unix || die
-		else
-			eapply -p2 "${DISTDIR}/fcitx-mozc-${FCITX_PATCH_VERSION}.patch"
-		fi
+		cp -pr "${WORKDIR}/fcitx-mozc/src/unix/fcitx" unix || die
 	fi
 
+	pushd "${WORKDIR}/${P}" > /dev/null || die
+
+	eapply "${FILESDIR}/${PN}-2.26.4220-system_abseil-cpp.patch"
+	eapply "${FILESDIR}/${PN}-2.26.4220-system_gtest.patch"
+	eapply "${FILESDIR}/${PN}-2.26.4220-system_jsoncpp.patch"
+	eapply "${FILESDIR}/${PN}-2.26.4220-environmental_variables.patch"
+	eapply "${FILESDIR}/${PN}-2.26.4220-server_path_check.patch"
+
 	eapply_user
 
+	popd > /dev/null || die
+
 	sed \
 		-e "s/def GypMain(options, unused_args):/def GypMain(options, gyp_args):/" \
 		-e "s/RunOrDie(gyp_command + gyp_options)/RunOrDie(gyp_command + gyp_options + gyp_args)/" \
 		-e "s/RunOrDie(\[ninja/&, '-j$(makeopts_jobs)', '-l$(makeopts_loadavg "${MAKEOPTS}" 0)', '-v'/" \
 		-i build_mozc.py || die
 
-	sed \
-		-e "s/'release_extra_cflags%': \['-O2'\]/'release_extra_cflags%': []/" \
-		-e "s/'debug_extra_cflags%': \['-O0', '-g'\]/'debug_extra_cflags%': []/" \
-		-i gyp/common.gypi || die
-
 	local ar=($(tc-getAR))
 	local cc=($(tc-getCC))
 	local cxx=($(tc-getCXX))
 	local ld=($(tc-getLD))
 	local nm=($(tc-getNM))
-	local readelf=($(tc-getPROG READELF readelf))
+	local readelf=($(tc-getREADELF))
 
 	# Use absolute paths. Non-absolute paths are mishandled by GYP.
 	ar[0]=$(type -P ${ar[0]})
@@ -163,6 +185,12 @@ src_prepare() {
 		-e "s:<!(which nm):${nm[@]}:" \
 		-e "s:<!(which readelf):${readelf[@]}:" \
 		-i gyp/common.gypi || die
+
+	# https://github.com/google/mozc/issues/489
+	sed \
+		-e "/'-lc++'/d" \
+		-e "/'-stdlib=libc++'/d" \
+		-i gyp/common.gypi || die
 }
 
 src_configure() {
@@ -182,23 +210,20 @@ src_configure() {
 		gyp_arguments+=(-D compiler_host=unknown -D compiler_target=unknown)
 	fi
 
+	gyp_arguments+=(-D debug_extra_cflags=)
+	gyp_arguments+=(-D release_extra_cflags=)
+
 	gyp_arguments+=(-D use_fcitx=$(usex fcitx4 YES NO))
-	gyp_arguments+=(-D use_libgtest=$(usex test 1 0))
 	gyp_arguments+=(-D use_libibus=$(usex ibus 1 0))
-	gyp_arguments+=(-D use_libjsoncpp=$(usex test 1 0))
 	gyp_arguments+=(-D use_libprotobuf=1)
-	gyp_arguments+=(-D use_libzinnia=$(usex gui 1 0))
+	gyp_arguments+=(-D use_system_abseil_cpp=1)
+	gyp_arguments+=(-D use_system_gtest=$(usex test 1 0))
+	gyp_arguments+=(-D use_system_jsoncpp=$(usex test 1 0))
 	gyp_arguments+=(-D enable_gtk_renderer=$(usex renderer 1 0))
 
 	gyp_arguments+=(-D server_dir="${EPREFIX}/usr/libexec/mozc")
 	gyp_arguments+=(-D document_dir="${EPREFIX}/usr/libexec/mozc/documents")
 
-	if use handwriting-tegaki; then
-		gyp_arguments+=(-D zinnia_model_file="${EPREFIX}/usr/share/tegaki/models/zinnia/handwriting-ja.model")
-	elif use handwriting-tomoe; then
-		gyp_arguments+=(-D zinnia_model_file="${EPREFIX}/usr/$(get_libdir)/zinnia/model/tomoe/handwriting-ja.model")
-	fi
-
 	if use ibus; then
 		gyp_arguments+=(-D ibus_mozc_path="${EPREFIX}/usr/libexec/ibus-engine-mozc")
 		gyp_arguments+=(-D ibus_mozc_icon_path="${EPREFIX}/usr/share/ibus-mozc/product_icon.png")
@@ -280,8 +305,8 @@ src_install() {
 		insinto /usr/share/fcitx/mozc/icon
 		newins data/images/product_icon_32bpp-128.png mozc.png
 		local image
-		for image in data/images/unix/ui-*.png; do
-			newins "${image}" "mozc-${image#data/images/unix/ui-}"
+		for image in ../../fcitx-${PN}/src/data/images/unix/ui-*.png; do
+			newins "${image}" "mozc-${image#../../fcitx-${PN}/src/data/images/unix/ui-}"
 		done
 
 		local locale mo_file
@@ -322,18 +347,6 @@ pkg_postinst() {
 	elog "MOZC_CONFIGURATION_DIRECTORY"
 	elog "  Mozc configuration directory"
 	elog "  Value used by default: \"~/.mozc\""
-	if use gui; then
-		elog "MOZC_ZINNIA_MODEL_FILE"
-		elog "  Zinnia handwriting recognition model file"
-		if use handwriting-tegaki; then
-			elog "  Value used by default: \"${EPREFIX}/usr/share/tegaki/models/zinnia/handwriting-ja.model\""
-		elif use handwriting-tomoe; then
-			elog "  Value used by default: \"${EPREFIX}/usr/$(get_libdir)/zinnia/model/tomoe/handwriting-ja.model\""
-		fi
-		elog "  Potential values:"
-		elog "    \"${EPREFIX}/usr/share/tegaki/models/zinnia/handwriting-ja.model\""
-		elog "    \"${EPREFIX}/usr/$(get_libdir)/zinnia/model/tomoe/handwriting-ja.model\""
-	fi
 	elog
 	if use emacs; then
 		elog