Adding upstream version 115.8.0esr.upstream/115.8.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

16 files changed, 1033 insertions, 0 deletions

diff --git a/config/external/icu/common/moz.build b/config/external/icu/common/moz.build
new file mode 100644
index 0000000000..b670c06222
--- /dev/null
+++ b/config/external/icu/common/moz.build
@@ -0,0 +1,34 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+Library("icuuc")
+FINAL_LIBRARY = "icu"
+
+DEFINES["U_COMMON_IMPLEMENTATION"] = True
+
+LOCAL_INCLUDES += ["/intl/icu/source/i18n"]
+
+include("../defs.mozbuild")
+include("sources.mozbuild")
+
+SOURCES += sources
+
+if CONFIG["TARGET_ENDIANNESS"] == "big":
+    HostLibrary("host_icuuc")
+    HOST_DEFINES["U_COMMON_IMPLEMENTATION"] = True
+    HOST_SOURCES += sources
+    HOST_SOURCES += other_sources
+
+# Clang 16 added an error that can be downgraded, but won't be downgradable
+# in clang 17.
+# https://unicode-org.atlassian.net/browse/ICU-22113
+if (
+    CONFIG["CC_TYPE"] in ("clang", "clang-cl")
+    and int(CONFIG["CC_VERSION"].split(".")[0]) == 16
+):
+    SOURCES["/intl/icu/source/common/ubidi.cpp"].flags += [
+        "-Wno-error=enum-constexpr-conversion"
+    ]
diff --git a/config/external/icu/common/sources.mozbuild b/config/external/icu/common/sources.mozbuild
new file mode 100644
index 0000000000..5ffd366683
--- /dev/null
+++ b/config/external/icu/common/sources.mozbuild
@@ -0,0 +1,305 @@
+# THIS FILE IS GENERATED BY /intl/icu_sources_data.py DO NOT EDIT
+sources = [
+   '/intl/icu/source/common/appendable.cpp',
+   '/intl/icu/source/common/bmpset.cpp',
+   '/intl/icu/source/common/brkeng.cpp',
+   '/intl/icu/source/common/brkiter.cpp',
+   '/intl/icu/source/common/bytesinkutil.cpp',
+   '/intl/icu/source/common/bytestream.cpp',
+   '/intl/icu/source/common/bytestrie.cpp',
+   '/intl/icu/source/common/bytestriebuilder.cpp',
+   '/intl/icu/source/common/caniter.cpp',
+   '/intl/icu/source/common/characterproperties.cpp',
+   '/intl/icu/source/common/chariter.cpp',
+   '/intl/icu/source/common/charstr.cpp',
+   '/intl/icu/source/common/cmemory.cpp',
+   '/intl/icu/source/common/cstring.cpp',
+   '/intl/icu/source/common/dictbe.cpp',
+   '/intl/icu/source/common/dictionarydata.cpp',
+   '/intl/icu/source/common/dtintrv.cpp',
+   '/intl/icu/source/common/edits.cpp',
+   '/intl/icu/source/common/emojiprops.cpp',
+   '/intl/icu/source/common/errorcode.cpp',
+   '/intl/icu/source/common/filteredbrk.cpp',
+   '/intl/icu/source/common/filterednormalizer2.cpp',
+   '/intl/icu/source/common/loadednormalizer2impl.cpp',
+   '/intl/icu/source/common/localebuilder.cpp',
+   '/intl/icu/source/common/localematcher.cpp',
+   '/intl/icu/source/common/localeprioritylist.cpp',
+   '/intl/icu/source/common/locavailable.cpp',
+   '/intl/icu/source/common/locbased.cpp',
+   '/intl/icu/source/common/locdispnames.cpp',
+   '/intl/icu/source/common/locdistance.cpp',
+   '/intl/icu/source/common/locdspnm.cpp',
+   '/intl/icu/source/common/locid.cpp',
+   '/intl/icu/source/common/loclikely.cpp',
+   '/intl/icu/source/common/loclikelysubtags.cpp',
+   '/intl/icu/source/common/locmap.cpp',
+   '/intl/icu/source/common/locresdata.cpp',
+   '/intl/icu/source/common/locutil.cpp',
+   '/intl/icu/source/common/lsr.cpp',
+   '/intl/icu/source/common/lstmbe.cpp',
+   '/intl/icu/source/common/messagepattern.cpp',
+   '/intl/icu/source/common/mlbe.cpp',
+   '/intl/icu/source/common/normalizer2.cpp',
+   '/intl/icu/source/common/normalizer2impl.cpp',
+   '/intl/icu/source/common/normlzr.cpp',
+   '/intl/icu/source/common/parsepos.cpp',
+   '/intl/icu/source/common/patternprops.cpp',
+   '/intl/icu/source/common/propname.cpp',
+   '/intl/icu/source/common/punycode.cpp',
+   '/intl/icu/source/common/putil.cpp',
+   '/intl/icu/source/common/rbbi.cpp',
+   '/intl/icu/source/common/rbbi_cache.cpp',
+   '/intl/icu/source/common/rbbidata.cpp',
+   '/intl/icu/source/common/rbbinode.cpp',
+   '/intl/icu/source/common/rbbirb.cpp',
+   '/intl/icu/source/common/rbbiscan.cpp',
+   '/intl/icu/source/common/rbbisetb.cpp',
+   '/intl/icu/source/common/rbbistbl.cpp',
+   '/intl/icu/source/common/rbbitblb.cpp',
+   '/intl/icu/source/common/resbund.cpp',
+   '/intl/icu/source/common/resource.cpp',
+   '/intl/icu/source/common/restrace.cpp',
+   '/intl/icu/source/common/ruleiter.cpp',
+   '/intl/icu/source/common/schriter.cpp',
+   '/intl/icu/source/common/serv.cpp',
+   '/intl/icu/source/common/servlk.cpp',
+   '/intl/icu/source/common/servlkf.cpp',
+   '/intl/icu/source/common/servls.cpp',
+   '/intl/icu/source/common/servnotf.cpp',
+   '/intl/icu/source/common/servrbf.cpp',
+   '/intl/icu/source/common/servslkf.cpp',
+   '/intl/icu/source/common/sharedobject.cpp',
+   '/intl/icu/source/common/simpleformatter.cpp',
+   '/intl/icu/source/common/static_unicode_sets.cpp',
+   '/intl/icu/source/common/stringpiece.cpp',
+   '/intl/icu/source/common/stringtriebuilder.cpp',
+   '/intl/icu/source/common/uarrsort.cpp',
+   '/intl/icu/source/common/ubidi.cpp',
+   '/intl/icu/source/common/ubidi_props.cpp',
+   '/intl/icu/source/common/ubidiln.cpp',
+   '/intl/icu/source/common/ubidiwrt.cpp',
+   '/intl/icu/source/common/ubrk.cpp',
+   '/intl/icu/source/common/ucase.cpp',
+   '/intl/icu/source/common/ucasemap.cpp',
+   '/intl/icu/source/common/ucasemap_titlecase_brkiter.cpp',
+   '/intl/icu/source/common/uchar.cpp',
+   '/intl/icu/source/common/ucharstrie.cpp',
+   '/intl/icu/source/common/ucharstriebuilder.cpp',
+   '/intl/icu/source/common/ucharstrieiterator.cpp',
+   '/intl/icu/source/common/uchriter.cpp',
+   '/intl/icu/source/common/ucln_cmn.cpp',
+   '/intl/icu/source/common/ucmndata.cpp',
+   '/intl/icu/source/common/ucnv.cpp',
+   '/intl/icu/source/common/ucnv_bld.cpp',
+   '/intl/icu/source/common/ucnv_cb.cpp',
+   '/intl/icu/source/common/ucnv_cnv.cpp',
+   '/intl/icu/source/common/ucnv_err.cpp',
+   '/intl/icu/source/common/ucnv_io.cpp',
+   '/intl/icu/source/common/ucnv_u16.cpp',
+   '/intl/icu/source/common/ucnv_u32.cpp',
+   '/intl/icu/source/common/ucnv_u7.cpp',
+   '/intl/icu/source/common/ucnv_u8.cpp',
+   '/intl/icu/source/common/ucnvbocu.cpp',
+   '/intl/icu/source/common/ucnvlat1.cpp',
+   '/intl/icu/source/common/ucnvscsu.cpp',
+   '/intl/icu/source/common/ucol_swp.cpp',
+   '/intl/icu/source/common/ucptrie.cpp',
+   '/intl/icu/source/common/ucurr.cpp',
+   '/intl/icu/source/common/udata.cpp',
+   '/intl/icu/source/common/udatamem.cpp',
+   '/intl/icu/source/common/udataswp.cpp',
+   '/intl/icu/source/common/uenum.cpp',
+   '/intl/icu/source/common/uhash.cpp',
+   '/intl/icu/source/common/uhash_us.cpp',
+   '/intl/icu/source/common/uinit.cpp',
+   '/intl/icu/source/common/uinvchar.cpp',
+   '/intl/icu/source/common/uiter.cpp',
+   '/intl/icu/source/common/ulist.cpp',
+   '/intl/icu/source/common/uloc.cpp',
+   '/intl/icu/source/common/uloc_keytype.cpp',
+   '/intl/icu/source/common/uloc_tag.cpp',
+   '/intl/icu/source/common/umapfile.cpp',
+   '/intl/icu/source/common/umath.cpp',
+   '/intl/icu/source/common/umutablecptrie.cpp',
+   '/intl/icu/source/common/umutex.cpp',
+   '/intl/icu/source/common/unames.cpp',
+   '/intl/icu/source/common/unifiedcache.cpp',
+   '/intl/icu/source/common/unifilt.cpp',
+   '/intl/icu/source/common/unifunct.cpp',
+   '/intl/icu/source/common/uniset.cpp',
+   '/intl/icu/source/common/uniset_closure.cpp',
+   '/intl/icu/source/common/uniset_props.cpp',
+   '/intl/icu/source/common/unisetspan.cpp',
+   '/intl/icu/source/common/unistr.cpp',
+   '/intl/icu/source/common/unistr_case.cpp',
+   '/intl/icu/source/common/unistr_case_locale.cpp',
+   '/intl/icu/source/common/unistr_cnv.cpp',
+   '/intl/icu/source/common/unistr_props.cpp',
+   '/intl/icu/source/common/unistr_titlecase_brkiter.cpp',
+   '/intl/icu/source/common/unormcmp.cpp',
+   '/intl/icu/source/common/uobject.cpp',
+   '/intl/icu/source/common/uprops.cpp',
+   '/intl/icu/source/common/uresbund.cpp',
+   '/intl/icu/source/common/uresdata.cpp',
+   '/intl/icu/source/common/uscript.cpp',
+   '/intl/icu/source/common/uscript_props.cpp',
+   '/intl/icu/source/common/uset.cpp',
+   '/intl/icu/source/common/uset_props.cpp',
+   '/intl/icu/source/common/usetiter.cpp',
+   '/intl/icu/source/common/usprep.cpp',
+   '/intl/icu/source/common/ustack.cpp',
+   '/intl/icu/source/common/ustr_cnv.cpp',
+   '/intl/icu/source/common/ustr_titlecase_brkiter.cpp',
+   '/intl/icu/source/common/ustrcase.cpp',
+   '/intl/icu/source/common/ustrcase_locale.cpp',
+   '/intl/icu/source/common/ustrenum.cpp',
+   '/intl/icu/source/common/ustrfmt.cpp',
+   '/intl/icu/source/common/ustring.cpp',
+   '/intl/icu/source/common/ustrtrns.cpp',
+   '/intl/icu/source/common/utext.cpp',
+   '/intl/icu/source/common/utf_impl.cpp',
+   '/intl/icu/source/common/util.cpp',
+   '/intl/icu/source/common/utrace.cpp',
+   '/intl/icu/source/common/utrie.cpp',
+   '/intl/icu/source/common/utrie2.cpp',
+   '/intl/icu/source/common/utrie2_builder.cpp',
+   '/intl/icu/source/common/utrie_swap.cpp',
+   '/intl/icu/source/common/uts46.cpp',
+   '/intl/icu/source/common/utypes.cpp',
+   '/intl/icu/source/common/uvector.cpp',
+   '/intl/icu/source/common/uvectr32.cpp',
+   '/intl/icu/source/common/uvectr64.cpp',
+   '/intl/icu/source/common/wintz.cpp',
+]
+other_sources = [
+   '/intl/icu/source/common/bytestrieiterator.cpp',
+   '/intl/icu/source/common/cstr.cpp',
+   '/intl/icu/source/common/cwchar.cpp',
+   '/intl/icu/source/common/icudataver.cpp',
+   '/intl/icu/source/common/icuplug.cpp',
+   '/intl/icu/source/common/pluralmap.cpp',
+   '/intl/icu/source/common/propsvec.cpp',
+   '/intl/icu/source/common/resbund_cnv.cpp',
+   '/intl/icu/source/common/ubiditransform.cpp',
+   '/intl/icu/source/common/ucat.cpp',
+   '/intl/icu/source/common/ucnv2022.cpp',
+   '/intl/icu/source/common/ucnv_ct.cpp',
+   '/intl/icu/source/common/ucnv_ext.cpp',
+   '/intl/icu/source/common/ucnv_lmb.cpp',
+   '/intl/icu/source/common/ucnv_set.cpp',
+   '/intl/icu/source/common/ucnvdisp.cpp',
+   '/intl/icu/source/common/ucnvhz.cpp',
+   '/intl/icu/source/common/ucnvisci.cpp',
+   '/intl/icu/source/common/ucnvmbcs.cpp',
+   '/intl/icu/source/common/ucnvsel.cpp',
+   '/intl/icu/source/common/uidna.cpp',
+   '/intl/icu/source/common/unorm.cpp',
+   '/intl/icu/source/common/ures_cnv.cpp',
+   '/intl/icu/source/common/usc_impl.cpp',
+   '/intl/icu/source/common/ushape.cpp',
+   '/intl/icu/source/common/ustr_wcs.cpp',
+   '/intl/icu/source/common/util_props.cpp',
+]
+EXPORTS.unicode += [
+   '/intl/icu/source/common/unicode/appendable.h',
+   '/intl/icu/source/common/unicode/brkiter.h',
+   '/intl/icu/source/common/unicode/bytestream.h',
+   '/intl/icu/source/common/unicode/bytestrie.h',
+   '/intl/icu/source/common/unicode/bytestriebuilder.h',
+   '/intl/icu/source/common/unicode/caniter.h',
+   '/intl/icu/source/common/unicode/casemap.h',
+   '/intl/icu/source/common/unicode/char16ptr.h',
+   '/intl/icu/source/common/unicode/chariter.h',
+   '/intl/icu/source/common/unicode/dbbi.h',
+   '/intl/icu/source/common/unicode/docmain.h',
+   '/intl/icu/source/common/unicode/dtintrv.h',
+   '/intl/icu/source/common/unicode/edits.h',
+   '/intl/icu/source/common/unicode/enumset.h',
+   '/intl/icu/source/common/unicode/errorcode.h',
+   '/intl/icu/source/common/unicode/filteredbrk.h',
+   '/intl/icu/source/common/unicode/icudataver.h',
+   '/intl/icu/source/common/unicode/icuplug.h',
+   '/intl/icu/source/common/unicode/idna.h',
+   '/intl/icu/source/common/unicode/localebuilder.h',
+   '/intl/icu/source/common/unicode/localematcher.h',
+   '/intl/icu/source/common/unicode/localpointer.h',
+   '/intl/icu/source/common/unicode/locdspnm.h',
+   '/intl/icu/source/common/unicode/locid.h',
+   '/intl/icu/source/common/unicode/messagepattern.h',
+   '/intl/icu/source/common/unicode/normalizer2.h',
+   '/intl/icu/source/common/unicode/normlzr.h',
+   '/intl/icu/source/common/unicode/parseerr.h',
+   '/intl/icu/source/common/unicode/parsepos.h',
+   '/intl/icu/source/common/unicode/platform.h',
+   '/intl/icu/source/common/unicode/ptypes.h',
+   '/intl/icu/source/common/unicode/putil.h',
+   '/intl/icu/source/common/unicode/rbbi.h',
+   '/intl/icu/source/common/unicode/rep.h',
+   '/intl/icu/source/common/unicode/resbund.h',
+   '/intl/icu/source/common/unicode/schriter.h',
+   '/intl/icu/source/common/unicode/simpleformatter.h',
+   '/intl/icu/source/common/unicode/std_string.h',
+   '/intl/icu/source/common/unicode/strenum.h',
+   '/intl/icu/source/common/unicode/stringoptions.h',
+   '/intl/icu/source/common/unicode/stringpiece.h',
+   '/intl/icu/source/common/unicode/stringtriebuilder.h',
+   '/intl/icu/source/common/unicode/symtable.h',
+   '/intl/icu/source/common/unicode/ubidi.h',
+   '/intl/icu/source/common/unicode/ubiditransform.h',
+   '/intl/icu/source/common/unicode/ubrk.h',
+   '/intl/icu/source/common/unicode/ucasemap.h',
+   '/intl/icu/source/common/unicode/ucat.h',
+   '/intl/icu/source/common/unicode/uchar.h',
+   '/intl/icu/source/common/unicode/ucharstrie.h',
+   '/intl/icu/source/common/unicode/ucharstriebuilder.h',
+   '/intl/icu/source/common/unicode/uchriter.h',
+   '/intl/icu/source/common/unicode/uclean.h',
+   '/intl/icu/source/common/unicode/ucnv.h',
+   '/intl/icu/source/common/unicode/ucnv_cb.h',
+   '/intl/icu/source/common/unicode/ucnv_err.h',
+   '/intl/icu/source/common/unicode/ucnvsel.h',
+   '/intl/icu/source/common/unicode/uconfig.h',
+   '/intl/icu/source/common/unicode/ucpmap.h',
+   '/intl/icu/source/common/unicode/ucptrie.h',
+   '/intl/icu/source/common/unicode/ucurr.h',
+   '/intl/icu/source/common/unicode/udata.h',
+   '/intl/icu/source/common/unicode/udisplaycontext.h',
+   '/intl/icu/source/common/unicode/uenum.h',
+   '/intl/icu/source/common/unicode/uidna.h',
+   '/intl/icu/source/common/unicode/uiter.h',
+   '/intl/icu/source/common/unicode/uldnames.h',
+   '/intl/icu/source/common/unicode/uloc.h',
+   '/intl/icu/source/common/unicode/umachine.h',
+   '/intl/icu/source/common/unicode/umisc.h',
+   '/intl/icu/source/common/unicode/umutablecptrie.h',
+   '/intl/icu/source/common/unicode/unifilt.h',
+   '/intl/icu/source/common/unicode/unifunct.h',
+   '/intl/icu/source/common/unicode/unimatch.h',
+   '/intl/icu/source/common/unicode/uniset.h',
+   '/intl/icu/source/common/unicode/unistr.h',
+   '/intl/icu/source/common/unicode/unorm.h',
+   '/intl/icu/source/common/unicode/unorm2.h',
+   '/intl/icu/source/common/unicode/uobject.h',
+   '/intl/icu/source/common/unicode/urename.h',
+   '/intl/icu/source/common/unicode/urep.h',
+   '/intl/icu/source/common/unicode/ures.h',
+   '/intl/icu/source/common/unicode/uscript.h',
+   '/intl/icu/source/common/unicode/uset.h',
+   '/intl/icu/source/common/unicode/usetiter.h',
+   '/intl/icu/source/common/unicode/ushape.h',
+   '/intl/icu/source/common/unicode/usprep.h',
+   '/intl/icu/source/common/unicode/ustring.h',
+   '/intl/icu/source/common/unicode/ustringtrie.h',
+   '/intl/icu/source/common/unicode/utext.h',
+   '/intl/icu/source/common/unicode/utf.h',
+   '/intl/icu/source/common/unicode/utf16.h',
+   '/intl/icu/source/common/unicode/utf32.h',
+   '/intl/icu/source/common/unicode/utf8.h',
+   '/intl/icu/source/common/unicode/utf_old.h',
+   '/intl/icu/source/common/unicode/utrace.h',
+   '/intl/icu/source/common/unicode/utypes.h',
+   '/intl/icu/source/common/unicode/uvernum.h',
+   '/intl/icu/source/common/unicode/uversion.h',
+]
diff --git a/config/external/icu/data/convert_icudata.py b/config/external/icu/data/convert_icudata.py
new file mode 100644
index 0000000000..b09affb9d8
--- /dev/null
+++ b/config/external/icu/data/convert_icudata.py
@@ -0,0 +1,20 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import os
+import subprocess
+
+import buildconfig
+
+
+def main(output, data_file):
+    output.close()
+    subprocess.run(
+        [
+            os.path.join(buildconfig.topobjdir, "dist", "host", "bin", "icupkg"),
+            "-tb",
+            data_file,
+            output.name,
+        ]
+    )
diff --git a/config/external/icu/data/icu_data.S b/config/external/icu/data/icu_data.S
new file mode 100644
index 0000000000..6ca4ce5973
--- /dev/null
+++ b/config/external/icu/data/icu_data.S
@@ -0,0 +1,29 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#if defined(_WIN32) && defined(__i386__)
+// Mark the object as SAFESEH-enabled.
+.def @feat.00;
+.scl 3;
+.type 0;
+.endef
+.global @feat.00
+.set @feat.00, 1
+#endif
+
+.global ICU_DATA_SYMBOL
+#if defined(__APPLE__)
+.data
+.const
+#elif defined(__wasi__)
+.section .rodata,"",@
+#else
+.section .rodata
+#endif
+.balign 16
+ICU_DATA_SYMBOL:
+.incbin ICU_DATA_FILE
+#ifdef __wasi__
+.size ICU_DATA_SYMBOL, . - ICU_DATA_SYMBOL
+#endif
diff --git a/config/external/icu/data/icudt73l.dat b/config/external/icu/data/icudt73l.dat
new file mode 100644
index 0000000000..b2780e7c75
--- /dev/null
+++ b/config/external/icu/data/icudt73l.dat
diff --git a/config/external/icu/data/moz.build b/config/external/icu/data/moz.build
new file mode 100644
index 0000000000..715f73550d
--- /dev/null
+++ b/config/external/icu/data/moz.build
@@ -0,0 +1,40 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Build a library containing the ICU data for use in the JS shell, so that
+# JSAPI consumers don't have to deal with setting ICU's data path.
+Library("icudata")
+
+LOCAL_INCLUDES += ["."]
+
+prefix = ""
+if (CONFIG["OS_ARCH"] == "WINNT" and CONFIG["CPU_ARCH"] == "x86") or CONFIG[
+    "OS_ARCH"
+] == "Darwin":
+    prefix = "_"
+
+data_file = {
+    "little": "icudt%sl.dat" % CONFIG["MOZ_ICU_VERSION"],
+    "big": "icudt%sb.dat" % CONFIG["MOZ_ICU_VERSION"],
+}
+data_dir = {
+    "little": SRCDIR,
+    "big": OBJDIR,
+}
+endianness = CONFIG["TARGET_ENDIANNESS"] or "little"
+DEFINES["ICU_DATA_FILE"] = '"%s/%s"' % (data_dir[endianness], data_file[endianness])
+DEFINES["ICU_DATA_SYMBOL"] = "%sicudt%s_dat" % (prefix, CONFIG["MOZ_ICU_VERSION"])
+SOURCES += [
+    "icu_data.S",
+]
+
+if CONFIG["OS_ARCH"] == "WINNT" and CONFIG["CC_TYPE"] == "clang-cl":
+    USE_INTEGRATED_CLANGCL_AS = True
+
+if CONFIG["TARGET_ENDIANNESS"] == "big":
+    GeneratedFile(
+        data_file["big"], script="convert_icudata.py", inputs=[data_file["little"]]
+    )
diff --git a/config/external/icu/defs.mozbuild b/config/external/icu/defs.mozbuild
new file mode 100644
index 0000000000..bcb9f3b301
--- /dev/null
+++ b/config/external/icu/defs.mozbuild
@@ -0,0 +1,74 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Also see <http://www.icu-project.org/repos/icu/tags/latest/icu4c/readme.html#RecBuild> for the
+# recommended build options when compiling ICU.
+# Don't use icu namespace automatically in client code.
+DEFINES['U_USING_ICU_NAMESPACE'] = 0
+# Don't include obsolete header files.
+DEFINES['U_NO_DEFAULT_INCLUDE_UTF_HEADERS'] = 1
+DEFINES['U_HIDE_OBSOLETE_UTF_OLD_H'] = 1
+
+# Remove chunks of the library that we don't need (yet).
+DEFINES['UCONFIG_NO_LEGACY_CONVERSION'] = True
+DEFINES['UCONFIG_NO_TRANSLITERATION'] = True
+DEFINES['UCONFIG_NO_REGULAR_EXPRESSIONS'] = True
+
+# We don't need to pass data to and from legacy char* APIs.
+DEFINES['U_CHARSET_IS_UTF8'] = True
+
+# Add 'explicit' keyword to UnicodeString constructors.
+DEFINES['UNISTR_FROM_CHAR_EXPLICIT'] = "explicit"
+DEFINES['UNISTR_FROM_STRING_EXPLICIT'] = "explicit"
+
+# Disable dynamic loading of ICU data as a loadable library.
+DEFINES['U_ENABLE_DYLOAD'] = 0
+
+if not CONFIG['HAVE_LANGINFO_CODESET']:
+    DEFINES['U_HAVE_NL_LANGINFO_CODESET'] = 0
+
+if CONFIG['MOZ_DEBUG']:
+    DEFINES['U_DEBUG'] = 1
+
+# ICU requires RTTI
+if CONFIG['CC_TYPE'] in ('clang', 'gcc'):
+    CXXFLAGS += ['-frtti']
+elif CONFIG['OS_TARGET'] == 'WINNT':
+    # Remove the -GR- flag so we don't get a bunch of warning spam.
+    COMPILE_FLAGS['OS_CXXFLAGS'] = [
+        f for f in COMPILE_FLAGS['OS_CXXFLAGS'] if f != '-GR-'
+    ] + ['-GR']
+
+DisableStlWrapping()
+AllowCompilerWarnings()
+
+# We allow compiler warnings, but we can at least cut down on spammy
+# warnings that get triggered for every file.
+if CONFIG['CC_TYPE'] in ('clang', 'clang-cl'):
+    CFLAGS += [
+        '-Wno-c++20-compat',
+        '-Wno-comma',
+        '-Wno-implicit-const-int-float-conversion',
+        '-Wno-macro-redefined',
+        '-Wno-microsoft-include',
+        '-Wno-tautological-unsigned-enum-zero-compare',
+        '-Wno-unreachable-code-loop-increment',
+        '-Wno-unreachable-code-return',
+    ]
+    CXXFLAGS += [
+        '-Wno-c++20-compat',
+        '-Wno-comma',
+        '-Wno-implicit-const-int-float-conversion',
+        '-Wno-macro-redefined',
+        '-Wno-microsoft-include',
+        '-Wno-tautological-unsigned-enum-zero-compare',
+        '-Wno-unreachable-code-loop-increment',
+        '-Wno-unreachable-code-return',
+    ]
+
+for k, v in DEFINES.items():
+    if k != 'UCONFIG_NO_LEGACY_CONVERSION':
+        HOST_DEFINES[k] = v
diff --git a/config/external/icu/i18n/moz.build b/config/external/icu/i18n/moz.build
new file mode 100644
index 0000000000..07adbcc7a1
--- /dev/null
+++ b/config/external/icu/i18n/moz.build
@@ -0,0 +1,23 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+Library("icui18n")
+FINAL_LIBRARY = "icu"
+
+DEFINES["U_I18N_IMPLEMENTATION"] = True
+
+LOCAL_INCLUDES += ["/intl/icu/source/common"]
+
+include("../defs.mozbuild")
+include("sources.mozbuild")
+
+SOURCES += sources
+
+if CONFIG["TARGET_ENDIANNESS"] == "big":
+    HostLibrary("host_icui18n")
+    HOST_DEFINES["U_I18N_IMPLEMENTATION"] = True
+    HOST_SOURCES += sources
+    HOST_SOURCES += other_sources
diff --git a/config/external/icu/i18n/sources.mozbuild b/config/external/icu/i18n/sources.mozbuild
new file mode 100644
index 0000000000..676c808eef
--- /dev/null
+++ b/config/external/icu/i18n/sources.mozbuild
@@ -0,0 +1,344 @@
+# THIS FILE IS GENERATED BY /intl/icu_sources_data.py DO NOT EDIT
+sources = [
+   '/intl/icu/source/i18n/astro.cpp',
+   '/intl/icu/source/i18n/basictz.cpp',
+   '/intl/icu/source/i18n/bocsu.cpp',
+   '/intl/icu/source/i18n/buddhcal.cpp',
+   '/intl/icu/source/i18n/calendar.cpp',
+   '/intl/icu/source/i18n/cecal.cpp',
+   '/intl/icu/source/i18n/chnsecal.cpp',
+   '/intl/icu/source/i18n/choicfmt.cpp',
+   '/intl/icu/source/i18n/coleitr.cpp',
+   '/intl/icu/source/i18n/coll.cpp',
+   '/intl/icu/source/i18n/collation.cpp',
+   '/intl/icu/source/i18n/collationbuilder.cpp',
+   '/intl/icu/source/i18n/collationcompare.cpp',
+   '/intl/icu/source/i18n/collationdata.cpp',
+   '/intl/icu/source/i18n/collationdatabuilder.cpp',
+   '/intl/icu/source/i18n/collationdatareader.cpp',
+   '/intl/icu/source/i18n/collationdatawriter.cpp',
+   '/intl/icu/source/i18n/collationfastlatin.cpp',
+   '/intl/icu/source/i18n/collationfastlatinbuilder.cpp',
+   '/intl/icu/source/i18n/collationfcd.cpp',
+   '/intl/icu/source/i18n/collationiterator.cpp',
+   '/intl/icu/source/i18n/collationkeys.cpp',
+   '/intl/icu/source/i18n/collationroot.cpp',
+   '/intl/icu/source/i18n/collationrootelements.cpp',
+   '/intl/icu/source/i18n/collationruleparser.cpp',
+   '/intl/icu/source/i18n/collationsets.cpp',
+   '/intl/icu/source/i18n/collationsettings.cpp',
+   '/intl/icu/source/i18n/collationtailoring.cpp',
+   '/intl/icu/source/i18n/collationweights.cpp',
+   '/intl/icu/source/i18n/compactdecimalformat.cpp',
+   '/intl/icu/source/i18n/coptccal.cpp',
+   '/intl/icu/source/i18n/curramt.cpp',
+   '/intl/icu/source/i18n/currfmt.cpp',
+   '/intl/icu/source/i18n/currpinf.cpp',
+   '/intl/icu/source/i18n/currunit.cpp',
+   '/intl/icu/source/i18n/dangical.cpp',
+   '/intl/icu/source/i18n/datefmt.cpp',
+   '/intl/icu/source/i18n/dayperiodrules.cpp',
+   '/intl/icu/source/i18n/dcfmtsym.cpp',
+   '/intl/icu/source/i18n/decContext.cpp',
+   '/intl/icu/source/i18n/decimfmt.cpp',
+   '/intl/icu/source/i18n/decNumber.cpp',
+   '/intl/icu/source/i18n/displayoptions.cpp',
+   '/intl/icu/source/i18n/double-conversion-bignum-dtoa.cpp',
+   '/intl/icu/source/i18n/double-conversion-bignum.cpp',
+   '/intl/icu/source/i18n/double-conversion-cached-powers.cpp',
+   '/intl/icu/source/i18n/double-conversion-double-to-string.cpp',
+   '/intl/icu/source/i18n/double-conversion-fast-dtoa.cpp',
+   '/intl/icu/source/i18n/double-conversion-string-to-double.cpp',
+   '/intl/icu/source/i18n/double-conversion-strtod.cpp',
+   '/intl/icu/source/i18n/dtfmtsym.cpp',
+   '/intl/icu/source/i18n/dtitvfmt.cpp',
+   '/intl/icu/source/i18n/dtitvinf.cpp',
+   '/intl/icu/source/i18n/dtptngen.cpp',
+   '/intl/icu/source/i18n/dtrule.cpp',
+   '/intl/icu/source/i18n/erarules.cpp',
+   '/intl/icu/source/i18n/ethpccal.cpp',
+   '/intl/icu/source/i18n/fmtable.cpp',
+   '/intl/icu/source/i18n/format.cpp',
+   '/intl/icu/source/i18n/formatted_string_builder.cpp',
+   '/intl/icu/source/i18n/formattedval_iterimpl.cpp',
+   '/intl/icu/source/i18n/formattedval_sbimpl.cpp',
+   '/intl/icu/source/i18n/formattedvalue.cpp',
+   '/intl/icu/source/i18n/fphdlimp.cpp',
+   '/intl/icu/source/i18n/fpositer.cpp',
+   '/intl/icu/source/i18n/gregocal.cpp',
+   '/intl/icu/source/i18n/gregoimp.cpp',
+   '/intl/icu/source/i18n/hebrwcal.cpp',
+   '/intl/icu/source/i18n/indiancal.cpp',
+   '/intl/icu/source/i18n/islamcal.cpp',
+   '/intl/icu/source/i18n/iso8601cal.cpp',
+   '/intl/icu/source/i18n/japancal.cpp',
+   '/intl/icu/source/i18n/listformatter.cpp',
+   '/intl/icu/source/i18n/measfmt.cpp',
+   '/intl/icu/source/i18n/measunit.cpp',
+   '/intl/icu/source/i18n/measunit_extra.cpp',
+   '/intl/icu/source/i18n/measure.cpp',
+   '/intl/icu/source/i18n/msgfmt.cpp',
+   '/intl/icu/source/i18n/nfrs.cpp',
+   '/intl/icu/source/i18n/nfrule.cpp',
+   '/intl/icu/source/i18n/nfsubs.cpp',
+   '/intl/icu/source/i18n/number_affixutils.cpp',
+   '/intl/icu/source/i18n/number_asformat.cpp',
+   '/intl/icu/source/i18n/number_capi.cpp',
+   '/intl/icu/source/i18n/number_compact.cpp',
+   '/intl/icu/source/i18n/number_currencysymbols.cpp',
+   '/intl/icu/source/i18n/number_decimalquantity.cpp',
+   '/intl/icu/source/i18n/number_decimfmtprops.cpp',
+   '/intl/icu/source/i18n/number_fluent.cpp',
+   '/intl/icu/source/i18n/number_formatimpl.cpp',
+   '/intl/icu/source/i18n/number_grouping.cpp',
+   '/intl/icu/source/i18n/number_integerwidth.cpp',
+   '/intl/icu/source/i18n/number_longnames.cpp',
+   '/intl/icu/source/i18n/number_mapper.cpp',
+   '/intl/icu/source/i18n/number_modifiers.cpp',
+   '/intl/icu/source/i18n/number_multiplier.cpp',
+   '/intl/icu/source/i18n/number_notation.cpp',
+   '/intl/icu/source/i18n/number_output.cpp',
+   '/intl/icu/source/i18n/number_padding.cpp',
+   '/intl/icu/source/i18n/number_patternmodifier.cpp',
+   '/intl/icu/source/i18n/number_patternstring.cpp',
+   '/intl/icu/source/i18n/number_rounding.cpp',
+   '/intl/icu/source/i18n/number_scientific.cpp',
+   '/intl/icu/source/i18n/number_simple.cpp',
+   '/intl/icu/source/i18n/number_skeletons.cpp',
+   '/intl/icu/source/i18n/number_symbolswrapper.cpp',
+   '/intl/icu/source/i18n/number_usageprefs.cpp',
+   '/intl/icu/source/i18n/number_utils.cpp',
+   '/intl/icu/source/i18n/numfmt.cpp',
+   '/intl/icu/source/i18n/numparse_affixes.cpp',
+   '/intl/icu/source/i18n/numparse_compositions.cpp',
+   '/intl/icu/source/i18n/numparse_currency.cpp',
+   '/intl/icu/source/i18n/numparse_decimal.cpp',
+   '/intl/icu/source/i18n/numparse_impl.cpp',
+   '/intl/icu/source/i18n/numparse_parsednumber.cpp',
+   '/intl/icu/source/i18n/numparse_scientific.cpp',
+   '/intl/icu/source/i18n/numparse_symbols.cpp',
+   '/intl/icu/source/i18n/numparse_validators.cpp',
+   '/intl/icu/source/i18n/numrange_capi.cpp',
+   '/intl/icu/source/i18n/numrange_fluent.cpp',
+   '/intl/icu/source/i18n/numrange_impl.cpp',
+   '/intl/icu/source/i18n/numsys.cpp',
+   '/intl/icu/source/i18n/olsontz.cpp',
+   '/intl/icu/source/i18n/persncal.cpp',
+   '/intl/icu/source/i18n/pluralranges.cpp',
+   '/intl/icu/source/i18n/plurfmt.cpp',
+   '/intl/icu/source/i18n/plurrule.cpp',
+   '/intl/icu/source/i18n/quantityformatter.cpp',
+   '/intl/icu/source/i18n/rbnf.cpp',
+   '/intl/icu/source/i18n/rbtz.cpp',
+   '/intl/icu/source/i18n/region.cpp',
+   '/intl/icu/source/i18n/reldatefmt.cpp',
+   '/intl/icu/source/i18n/reldtfmt.cpp',
+   '/intl/icu/source/i18n/rulebasedcollator.cpp',
+   '/intl/icu/source/i18n/scriptset.cpp',
+   '/intl/icu/source/i18n/search.cpp',
+   '/intl/icu/source/i18n/selfmt.cpp',
+   '/intl/icu/source/i18n/sharedbreakiterator.cpp',
+   '/intl/icu/source/i18n/simpletz.cpp',
+   '/intl/icu/source/i18n/smpdtfmt.cpp',
+   '/intl/icu/source/i18n/smpdtfst.cpp',
+   '/intl/icu/source/i18n/sortkey.cpp',
+   '/intl/icu/source/i18n/standardplural.cpp',
+   '/intl/icu/source/i18n/string_segment.cpp',
+   '/intl/icu/source/i18n/stsearch.cpp',
+   '/intl/icu/source/i18n/taiwncal.cpp',
+   '/intl/icu/source/i18n/timezone.cpp',
+   '/intl/icu/source/i18n/tmunit.cpp',
+   '/intl/icu/source/i18n/tmutamt.cpp',
+   '/intl/icu/source/i18n/tmutfmt.cpp',
+   '/intl/icu/source/i18n/tzfmt.cpp',
+   '/intl/icu/source/i18n/tzgnames.cpp',
+   '/intl/icu/source/i18n/tznames.cpp',
+   '/intl/icu/source/i18n/tznames_impl.cpp',
+   '/intl/icu/source/i18n/tzrule.cpp',
+   '/intl/icu/source/i18n/tztrans.cpp',
+   '/intl/icu/source/i18n/ucal.cpp',
+   '/intl/icu/source/i18n/ucln_in.cpp',
+   '/intl/icu/source/i18n/ucol.cpp',
+   '/intl/icu/source/i18n/ucol_res.cpp',
+   '/intl/icu/source/i18n/ucol_sit.cpp',
+   '/intl/icu/source/i18n/ucoleitr.cpp',
+   '/intl/icu/source/i18n/udat.cpp',
+   '/intl/icu/source/i18n/udateintervalformat.cpp',
+   '/intl/icu/source/i18n/udatpg.cpp',
+   '/intl/icu/source/i18n/ufieldpositer.cpp',
+   '/intl/icu/source/i18n/uitercollationiterator.cpp',
+   '/intl/icu/source/i18n/ulistformatter.cpp',
+   '/intl/icu/source/i18n/umsg.cpp',
+   '/intl/icu/source/i18n/units_complexconverter.cpp',
+   '/intl/icu/source/i18n/units_converter.cpp',
+   '/intl/icu/source/i18n/units_data.cpp',
+   '/intl/icu/source/i18n/units_router.cpp',
+   '/intl/icu/source/i18n/unum.cpp',
+   '/intl/icu/source/i18n/unumsys.cpp',
+   '/intl/icu/source/i18n/upluralrules.cpp',
+   '/intl/icu/source/i18n/usearch.cpp',
+   '/intl/icu/source/i18n/uspoof.cpp',
+   '/intl/icu/source/i18n/uspoof_impl.cpp',
+   '/intl/icu/source/i18n/utf16collationiterator.cpp',
+   '/intl/icu/source/i18n/utf8collationiterator.cpp',
+   '/intl/icu/source/i18n/utmscale.cpp',
+   '/intl/icu/source/i18n/vtzone.cpp',
+   '/intl/icu/source/i18n/windtfmt.cpp',
+   '/intl/icu/source/i18n/winnmfmt.cpp',
+   '/intl/icu/source/i18n/wintzimpl.cpp',
+   '/intl/icu/source/i18n/zonemeta.cpp',
+]
+other_sources = [
+   '/intl/icu/source/i18n/alphaindex.cpp',
+   '/intl/icu/source/i18n/anytrans.cpp',
+   '/intl/icu/source/i18n/brktrans.cpp',
+   '/intl/icu/source/i18n/casetrn.cpp',
+   '/intl/icu/source/i18n/cpdtrans.cpp',
+   '/intl/icu/source/i18n/csdetect.cpp',
+   '/intl/icu/source/i18n/csmatch.cpp',
+   '/intl/icu/source/i18n/csr2022.cpp',
+   '/intl/icu/source/i18n/csrecog.cpp',
+   '/intl/icu/source/i18n/csrmbcs.cpp',
+   '/intl/icu/source/i18n/csrsbcs.cpp',
+   '/intl/icu/source/i18n/csrucode.cpp',
+   '/intl/icu/source/i18n/csrutf8.cpp',
+   '/intl/icu/source/i18n/esctrn.cpp',
+   '/intl/icu/source/i18n/fmtable_cnv.cpp',
+   '/intl/icu/source/i18n/funcrepl.cpp',
+   '/intl/icu/source/i18n/gender.cpp',
+   '/intl/icu/source/i18n/inputext.cpp',
+   '/intl/icu/source/i18n/name2uni.cpp',
+   '/intl/icu/source/i18n/nortrans.cpp',
+   '/intl/icu/source/i18n/nultrans.cpp',
+   '/intl/icu/source/i18n/quant.cpp',
+   '/intl/icu/source/i18n/rbt.cpp',
+   '/intl/icu/source/i18n/rbt_data.cpp',
+   '/intl/icu/source/i18n/rbt_pars.cpp',
+   '/intl/icu/source/i18n/rbt_rule.cpp',
+   '/intl/icu/source/i18n/rbt_set.cpp',
+   '/intl/icu/source/i18n/regexcmp.cpp',
+   '/intl/icu/source/i18n/regeximp.cpp',
+   '/intl/icu/source/i18n/regexst.cpp',
+   '/intl/icu/source/i18n/regextxt.cpp',
+   '/intl/icu/source/i18n/rematch.cpp',
+   '/intl/icu/source/i18n/remtrans.cpp',
+   '/intl/icu/source/i18n/repattrn.cpp',
+   '/intl/icu/source/i18n/scientificnumberformatter.cpp',
+   '/intl/icu/source/i18n/strmatch.cpp',
+   '/intl/icu/source/i18n/strrepl.cpp',
+   '/intl/icu/source/i18n/titletrn.cpp',
+   '/intl/icu/source/i18n/tolowtrn.cpp',
+   '/intl/icu/source/i18n/toupptrn.cpp',
+   '/intl/icu/source/i18n/translit.cpp',
+   '/intl/icu/source/i18n/transreg.cpp',
+   '/intl/icu/source/i18n/tridpars.cpp',
+   '/intl/icu/source/i18n/ucsdet.cpp',
+   '/intl/icu/source/i18n/ulocdata.cpp',
+   '/intl/icu/source/i18n/unesctrn.cpp',
+   '/intl/icu/source/i18n/uni2name.cpp',
+   '/intl/icu/source/i18n/uregex.cpp',
+   '/intl/icu/source/i18n/uregexc.cpp',
+   '/intl/icu/source/i18n/uregion.cpp',
+   '/intl/icu/source/i18n/uspoof_build.cpp',
+   '/intl/icu/source/i18n/uspoof_conf.cpp',
+   '/intl/icu/source/i18n/utrans.cpp',
+   '/intl/icu/source/i18n/vzone.cpp',
+   '/intl/icu/source/i18n/zrule.cpp',
+   '/intl/icu/source/i18n/ztrans.cpp',
+]
+EXPORTS.unicode += [
+   '/intl/icu/source/i18n/unicode/alphaindex.h',
+   '/intl/icu/source/i18n/unicode/basictz.h',
+   '/intl/icu/source/i18n/unicode/calendar.h',
+   '/intl/icu/source/i18n/unicode/choicfmt.h',
+   '/intl/icu/source/i18n/unicode/coleitr.h',
+   '/intl/icu/source/i18n/unicode/coll.h',
+   '/intl/icu/source/i18n/unicode/compactdecimalformat.h',
+   '/intl/icu/source/i18n/unicode/curramt.h',
+   '/intl/icu/source/i18n/unicode/currpinf.h',
+   '/intl/icu/source/i18n/unicode/currunit.h',
+   '/intl/icu/source/i18n/unicode/datefmt.h',
+   '/intl/icu/source/i18n/unicode/dcfmtsym.h',
+   '/intl/icu/source/i18n/unicode/decimfmt.h',
+   '/intl/icu/source/i18n/unicode/displayoptions.h',
+   '/intl/icu/source/i18n/unicode/dtfmtsym.h',
+   '/intl/icu/source/i18n/unicode/dtitvfmt.h',
+   '/intl/icu/source/i18n/unicode/dtitvinf.h',
+   '/intl/icu/source/i18n/unicode/dtptngen.h',
+   '/intl/icu/source/i18n/unicode/dtrule.h',
+   '/intl/icu/source/i18n/unicode/fieldpos.h',
+   '/intl/icu/source/i18n/unicode/fmtable.h',
+   '/intl/icu/source/i18n/unicode/format.h',
+   '/intl/icu/source/i18n/unicode/formattednumber.h',
+   '/intl/icu/source/i18n/unicode/formattedvalue.h',
+   '/intl/icu/source/i18n/unicode/fpositer.h',
+   '/intl/icu/source/i18n/unicode/gender.h',
+   '/intl/icu/source/i18n/unicode/gregocal.h',
+   '/intl/icu/source/i18n/unicode/listformatter.h',
+   '/intl/icu/source/i18n/unicode/measfmt.h',
+   '/intl/icu/source/i18n/unicode/measunit.h',
+   '/intl/icu/source/i18n/unicode/measure.h',
+   '/intl/icu/source/i18n/unicode/msgfmt.h',
+   '/intl/icu/source/i18n/unicode/nounit.h',
+   '/intl/icu/source/i18n/unicode/numberformatter.h',
+   '/intl/icu/source/i18n/unicode/numberrangeformatter.h',
+   '/intl/icu/source/i18n/unicode/numfmt.h',
+   '/intl/icu/source/i18n/unicode/numsys.h',
+   '/intl/icu/source/i18n/unicode/plurfmt.h',
+   '/intl/icu/source/i18n/unicode/plurrule.h',
+   '/intl/icu/source/i18n/unicode/rbnf.h',
+   '/intl/icu/source/i18n/unicode/rbtz.h',
+   '/intl/icu/source/i18n/unicode/regex.h',
+   '/intl/icu/source/i18n/unicode/region.h',
+   '/intl/icu/source/i18n/unicode/reldatefmt.h',
+   '/intl/icu/source/i18n/unicode/scientificnumberformatter.h',
+   '/intl/icu/source/i18n/unicode/search.h',
+   '/intl/icu/source/i18n/unicode/selfmt.h',
+   '/intl/icu/source/i18n/unicode/simplenumberformatter.h',
+   '/intl/icu/source/i18n/unicode/simpletz.h',
+   '/intl/icu/source/i18n/unicode/smpdtfmt.h',
+   '/intl/icu/source/i18n/unicode/sortkey.h',
+   '/intl/icu/source/i18n/unicode/stsearch.h',
+   '/intl/icu/source/i18n/unicode/tblcoll.h',
+   '/intl/icu/source/i18n/unicode/timezone.h',
+   '/intl/icu/source/i18n/unicode/tmunit.h',
+   '/intl/icu/source/i18n/unicode/tmutamt.h',
+   '/intl/icu/source/i18n/unicode/tmutfmt.h',
+   '/intl/icu/source/i18n/unicode/translit.h',
+   '/intl/icu/source/i18n/unicode/tzfmt.h',
+   '/intl/icu/source/i18n/unicode/tznames.h',
+   '/intl/icu/source/i18n/unicode/tzrule.h',
+   '/intl/icu/source/i18n/unicode/tztrans.h',
+   '/intl/icu/source/i18n/unicode/ucal.h',
+   '/intl/icu/source/i18n/unicode/ucol.h',
+   '/intl/icu/source/i18n/unicode/ucoleitr.h',
+   '/intl/icu/source/i18n/unicode/ucsdet.h',
+   '/intl/icu/source/i18n/unicode/udat.h',
+   '/intl/icu/source/i18n/unicode/udateintervalformat.h',
+   '/intl/icu/source/i18n/unicode/udatpg.h',
+   '/intl/icu/source/i18n/unicode/udisplayoptions.h',
+   '/intl/icu/source/i18n/unicode/ufieldpositer.h',
+   '/intl/icu/source/i18n/unicode/uformattable.h',
+   '/intl/icu/source/i18n/unicode/uformattednumber.h',
+   '/intl/icu/source/i18n/unicode/uformattedvalue.h',
+   '/intl/icu/source/i18n/unicode/ugender.h',
+   '/intl/icu/source/i18n/unicode/ulistformatter.h',
+   '/intl/icu/source/i18n/unicode/ulocdata.h',
+   '/intl/icu/source/i18n/unicode/umsg.h',
+   '/intl/icu/source/i18n/unicode/unirepl.h',
+   '/intl/icu/source/i18n/unicode/unum.h',
+   '/intl/icu/source/i18n/unicode/unumberformatter.h',
+   '/intl/icu/source/i18n/unicode/unumberoptions.h',
+   '/intl/icu/source/i18n/unicode/unumberrangeformatter.h',
+   '/intl/icu/source/i18n/unicode/unumsys.h',
+   '/intl/icu/source/i18n/unicode/upluralrules.h',
+   '/intl/icu/source/i18n/unicode/uregex.h',
+   '/intl/icu/source/i18n/unicode/uregion.h',
+   '/intl/icu/source/i18n/unicode/ureldatefmt.h',
+   '/intl/icu/source/i18n/unicode/usearch.h',
+   '/intl/icu/source/i18n/unicode/usimplenumberformatter.h',
+   '/intl/icu/source/i18n/unicode/uspoof.h',
+   '/intl/icu/source/i18n/unicode/utmscale.h',
+   '/intl/icu/source/i18n/unicode/utrans.h',
+   '/intl/icu/source/i18n/unicode/vtzone.h',
+]
diff --git a/config/external/icu/icupkg/moz.build b/config/external/icu/icupkg/moz.build
new file mode 100644
index 0000000000..39314fbda7
--- /dev/null
+++ b/config/external/icu/icupkg/moz.build
@@ -0,0 +1,27 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+HostProgram("icupkg")
+
+LOCAL_INCLUDES += [
+    "/intl/icu/source/common",
+    "/intl/icu/source/i18n",
+    "/intl/icu/source/tools/toolutil",
+]
+
+include("../defs.mozbuild")
+include("sources.mozbuild")
+
+HOST_SOURCES += sources
+HOST_SOURCES += [
+    "/intl/icu/source/stubdata/stubdata.cpp",
+]
+
+HOST_USE_LIBS += [
+    "host_icui18n",
+    "host_icutoolutil",
+    "host_icuuc",
+]
diff --git a/config/external/icu/icupkg/sources.mozbuild b/config/external/icu/icupkg/sources.mozbuild
new file mode 100644
index 0000000000..42bb0447bf
--- /dev/null
+++ b/config/external/icu/icupkg/sources.mozbuild
@@ -0,0 +1,4 @@
+# THIS FILE IS GENERATED BY /intl/icu_sources_data.py DO NOT EDIT
+sources = [
+   '/intl/icu/source/tools/icupkg/icupkg.cpp',
+]
diff --git a/config/external/icu/moz.build b/config/external/icu/moz.build
new file mode 100644
index 0000000000..296d60d521
--- /dev/null
+++ b/config/external/icu/moz.build
@@ -0,0 +1,22 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+Library("icu")
+
+if CONFIG["MOZ_SYSTEM_ICU"]:
+    OS_LIBS += CONFIG["MOZ_ICU_LIBS"]
+else:
+    DIRS += [
+        "common",
+        "data",
+        "i18n",
+    ]
+    if CONFIG["TARGET_ENDIANNESS"] == "big":
+        DIRS += [
+            "toolutil",
+            "icupkg",
+        ]
+    USE_LIBS += ["icudata"]
diff --git a/config/external/icu/toolutil/moz.build b/config/external/icu/toolutil/moz.build
new file mode 100644
index 0000000000..e8dc827c2b
--- /dev/null
+++ b/config/external/icu/toolutil/moz.build
@@ -0,0 +1,20 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+HostLibrary("host_icutoolutil")
+FINAL_LIBRARY = "icu"
+
+DEFINES["U_TOOLUTIL_IMPLEMENTATION"] = True
+
+LOCAL_INCLUDES += [
+    "/intl/icu/source/common",
+    "/intl/icu/source/i18n",
+]
+
+include("../defs.mozbuild")
+include("sources.mozbuild")
+
+HOST_SOURCES += sources
diff --git a/config/external/icu/toolutil/sources.mozbuild b/config/external/icu/toolutil/sources.mozbuild
new file mode 100644
index 0000000000..7810475ec8
--- /dev/null
+++ b/config/external/icu/toolutil/sources.mozbuild
@@ -0,0 +1,27 @@
+# THIS FILE IS GENERATED BY /intl/icu_sources_data.py DO NOT EDIT
+sources = [
+   '/intl/icu/source/tools/toolutil/collationinfo.cpp',
+   '/intl/icu/source/tools/toolutil/dbgutil.cpp',
+   '/intl/icu/source/tools/toolutil/denseranges.cpp',
+   '/intl/icu/source/tools/toolutil/filestrm.cpp',
+   '/intl/icu/source/tools/toolutil/filetools.cpp',
+   '/intl/icu/source/tools/toolutil/flagparser.cpp',
+   '/intl/icu/source/tools/toolutil/package.cpp',
+   '/intl/icu/source/tools/toolutil/pkg_genc.cpp',
+   '/intl/icu/source/tools/toolutil/pkg_gencmn.cpp',
+   '/intl/icu/source/tools/toolutil/pkg_icu.cpp',
+   '/intl/icu/source/tools/toolutil/pkgitems.cpp',
+   '/intl/icu/source/tools/toolutil/ppucd.cpp',
+   '/intl/icu/source/tools/toolutil/swapimpl.cpp',
+   '/intl/icu/source/tools/toolutil/toolutil.cpp',
+   '/intl/icu/source/tools/toolutil/ucbuf.cpp',
+   '/intl/icu/source/tools/toolutil/ucln_tu.cpp',
+   '/intl/icu/source/tools/toolutil/ucm.cpp',
+   '/intl/icu/source/tools/toolutil/ucmstate.cpp',
+   '/intl/icu/source/tools/toolutil/udbgutil.cpp',
+   '/intl/icu/source/tools/toolutil/unewdata.cpp',
+   '/intl/icu/source/tools/toolutil/uoptions.cpp',
+   '/intl/icu/source/tools/toolutil/uparse.cpp',
+   '/intl/icu/source/tools/toolutil/writesrc.cpp',
+   '/intl/icu/source/tools/toolutil/xmlparser.cpp',
+]
diff --git a/config/external/icu4x/icu4x_data.S b/config/external/icu4x/icu4x_data.S
new file mode 100644
index 0000000000..95a647f9ef
--- /dev/null
+++ b/config/external/icu4x/icu4x_data.S
@@ -0,0 +1,29 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#if defined(_WIN32) && defined(__i386__)
+// Mark the object as SAFESEH-enabled.
+.def @feat.00;
+.scl 3;
+.type 0;
+.endef
+.global @feat.00
+.set @feat.00, 1
+#endif
+
+.global ICU4X_DATA_SYMBOL
+#if defined(__APPLE__)
+.data
+.const
+#elif defined(__wasi__)
+.section .rodata,"",@
+#else
+.section .rodata
+#endif
+.balign 16
+ICU4X_DATA_SYMBOL:
+.incbin ICU4X_DATA_FILE
+#ifdef __wasi__
+.size ICU4X_DATA_SYMBOL, . - ICU4X_DATA_SYMBOL
+#endif
diff --git a/config/external/icu4x/moz.build b/config/external/icu4x/moz.build
new file mode 100644
index 0000000000..63273b83ff
--- /dev/null
+++ b/config/external/icu4x/moz.build
@@ -0,0 +1,35 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Build the ICU4X data directly into the binary file. This is an experiment that can
+# be enabled by adding `ac_add_options --enable-icu4x` to your mozconfig.
+# See `intl/ICU4X.md`.
+
+if CONFIG["MOZ_ICU4X"]:
+    DEFINES["MOZ_ICU4X"] = 1
+    Library("icu4xdata")
+    LOCAL_INCLUDES += ["."]
+
+    # The "mangled" symbol gets prefixed by a "_" in certain platforms.
+    symbol_prefix = ""
+    if (CONFIG["OS_ARCH"] == "WINNT" and CONFIG["CPU_ARCH"] == "x86") or CONFIG[
+        "OS_ARCH"
+    ] == "Darwin":
+        symbol_prefix = "_"
+
+    # To re-generate this file run: intl/update-icu4x.sh
+    DEFINES["ICU4X_DATA_FILE"] = '"icu4x.postcard"'
+
+    # In C++ this data will be available via:
+    #
+    #   extern uint8_t icu4x_static_locale_data;
+    #   uint8_t firstByte = (&icu4x_static_locale_data)[0];
+    DEFINES["ICU4X_DATA_SYMBOL"] = "%s%s" % (symbol_prefix, "icu4x_static_locale_data")
+
+    # This is assembly which has instructions to include the binary locale data directly.
+    SOURCES += [
+        "icu4x_data.S",
+    ]