2 URL: http://site.icu-project.org/
8 This directory contains the source code of ICU 52.1 for C/C++
10 1. It was obtained with the following:
12 $ svn export --native-eol LF http://source.icu-project.org/repos/icu/icu/tags/release-52-1 icu52
14 The following directories we don't use are removed:
22 patches/configure.patch is applied to get runConfigureICU work in the
23 icudata generation step without layout and layoutex directory by removing the
24 corresponding Makefile's from ac_config variable.
26 2. Apply the following patch for platform related headers (putilimpl.h and
29 - patches/putil.patch for Android, QNX and newlib(NaCl-newlib).
30 Upstream bug for Android : http://bugs.icu-project.org/trac/ticket/10478
31 Upstream bug for QNX : http://bugs.icu-project.org/trac/ticket/10811
32 Upstream bug for newlib : http://bugs.icu-project.org/trac/ticket/10873
34 - patches/platform_nacl.patch to add U_PF_NATIVE_CLIENT
35 Upstream bug : http://bugs.icu-project.org/trac/ticket/11033
38 3. Breakiterator patches
40 - Apply patches/brkitr.patch
42 a. Move full stops (U+002E, U+FF0E) from MidNumLet to MidNum so that
43 FQDN labels can be split at '.'
44 b. Move fullwidth digits (U+FF10 - U+FF19) from Ideographic to Numeric.
45 See http://unicode.org/cldr/trac/ticket/6555
47 a. Use Japanese rules for all locales because Japanese tailoring only
48 affects Japanese specific characters.
49 See http://unicode.org/cldr/trac/ticket/3974
50 b. Minor changes in CL, OP and IS definitions to handle 'comma-variants'
52 See http://unicode.org/cldr/trac/ticket/6557
53 c. Fix line breaking for Chinese characters and quotation marks
54 See http://unicode.org/cldr/trac/ticket/4200 and
55 http://crbug.com/39779
58 - Add a new file brklocal.mk (copied from brkfiles.mk) with line_ja.txt
59 and word_POSIX.txt dropped from the build list.
61 - Apply patches/khmer-dictbe.patch and put in a smaller Khmer dictionary
62 (source/data/brkitr/khmerdict.txt) obtained from
63 http://bugs.icu-project.org/trac/ticket/9451
65 - Add several common Chinese words that were dropped previously to
66 source/data/cjdict/brkitr/cjdict.txt
67 patch: patches/cjdict.patch
68 upstream bug: http://bugs.icu-project.org/trac/ticket/10888
71 - android/brkitr.patch (to be applied for Android build only) :
72 Do not use the C+J dictionary for Chinese/Japanese segmentation
73 to reduce the data size. Adjust word.txt and a few other files.
75 - source/data/brkitr/word_ja.txt (used only on Android)
76 Added for Japanese-specific word-breaking without the C+J dictionary.
78 4. Converter changes :
80 - convrtrs.txt : Replaced the original by our own that only lists encodings
81 and aliases required by the WHATWG Encoding spec plus a few extra (see
84 - Add source/data/mappings/ucmlocal.txt : to list only converters we need.
86 - Add new tables per the WHATWG encoding standards for EUC-JP,
87 Shift_JIS and all the single byte encodings.
88 They're generated with scripts : scripts/{eucjp, sjis, single_byte}_gen.sh
91 a. ISO-2022-JP-[1-4] is dropped.
92 b. SCSU, BOCU, ISCII, UTF-7, LMB, ibm42*, ISO-2022-{KR,CN*} and HZ-GB :
93 converters and detectors are dropped leading to the ~100kB reduction
98 - patches/locale1.patch :
99 a. Exemplar character set changes for zh*, ja + 9 Indian locales
100 b. Minor fixes for Korean, a few Indic (AmPmMarkers) and
101 others (datetime format)
103 - Locale build configuration files: To include the full locale data
104 for Chrome's UI languages and the minimum locale data for other locales,
105 add reslocal.mk or {trns,sprep,rbnf,coll}local.mk files to
106 source/data/{coll,curr,lang.locale,curr,region,translit,zone,rbnf,sprep}.
108 This along with #8 (data.build.patch), #3 (brkiter) and #4 (converter)
109 cuts down the data size by ~ 11MB.
111 - Run scripts/trim_data.sh : About 2.1MB data size reduction.
112 a. Trim the locale data for Chrome's UI langauges :
113 locales, lang, region, currency
114 b. Trim the locale data for non-UI languages to the bare minimum :
115 ExemplarCharacters, LocaleScript, layout, and the name of the
116 language for a locale in its native language.
117 c. Remove the legacy Chinese character set-based collation
118 (big5han/gb2312han) that don't make any sense and nobdoy uses.
120 - android/patch_locale.sh (to be run for Android build only):
121 a. Makes changes to source/data/{curr,region,lang} to exclude these data
122 except the language and script names of zh_Hans and zh_Hant.
123 b. Remove exemplar cities in timezone data (data/zone)
124 c. Keep only the minimal calendar data in data/locales
126 - Add tg.txt to source/data/locale source/data/lang to add the minimal locale
127 data necessary for the spellchecker. In both directories, add tg.txt to
130 6. Timezone data update
131 - Grab the latest version of the following timezone data files and
132 put them in source/data/misc.
139 As of August 2014, the latest version is 2014f and the above files
141 http://source.icu-project.org/repos/icu/data/trunk/tzdata/icunew/2014f/44/
143 7. Transliterator customization
145 - Also add css3transform.txt to source/data/trnslit.
146 - Put the following line in trnslocal.mk
148 TRANSLIT_SOURCE=css3transform.txt
150 8. Build-related changes
153 Upstream bugs : http://bugs.icu-project.org/trac/ticket/8043
154 http://bugs.icu-project.org/trac/ticket/5701
155 - patches/vscomp.patch for building with Visual Studio on Windows.
156 a. do not use WINDOWS_LOCALE_API in locmap.c
157 b. do not redefine stringpiece::npos
158 c. fix a Windows build failure with U_USING_ICU_NAMESPACE=0
159 upstream bug: http://bugs.icu-project.org/trac/ticket/10486
161 d. Explicitly use Windows 'A' API when argument is an LPSTR in wintz.c
162 upstream bug : http://bugs.icu-project.org/trac/ticket/10870
164 - patches/data.build.patch :
165 Remove unnecessary resources : invuca, unames, collator source, stringprep
166 - patches/data.build.win.patch :
167 Windows-only data build patch.
169 - patches/clang_win.patch :
170 Take care of 3 warnings from clang and MSVC 2013.
171 upstream bug : http://bugs.icu-project.org/trac/ticket/11102
173 9. Pre-built data files are checked in with the following steps on Linux:
175 a. Make a icu data build directory outside the Chromium source tree
176 and cd to that directory.
179 ${CHROME_ICU_TREE_TOP}/source/runConfigureICU Linux --disable-layout
182 d. 'make' will fail in the 1st pass. Copy
183 ${CHROME_ICU_TREE_TOP}/source/data/in/coll/invuca.icu
184 to {BUILD_DIR_ROOT}/data/out/build/icudt52l/coll and re-run 'make'
185 in {BUILD_DIR_ROOT}/data.
187 e. 'make' will fail again when pkgdata looks for css3transform.res. Edit
188 data/out/tmp/icudata.lst to replace 'css3transform.res' with 'root.res'.
189 (see http://bugs.icu-project.org/trac/ticket/10570 ) and run 'make' again.
192 - source/data/in/icudtl.dat : Built on Linux with all the patches
193 above applied. icudt52l.dat is generated in
194 {BUILD_DIR_ROOT}/data/out/tmp and copied to the above location with a
195 version number (52) dropped.
198 - {mac,linux}/icudtl_dat.S : Built on Linux with all the
199 patches above (except android/brkitr.patch) applied and checked in.
200 This file will be generated in {BUILD_DIR_ROOT}/data/out/tmp as
201 icudt52l_dat.S, but '52' is dropped while copying.
203 mac/icudtl_dat.S is identical to linux/icudtl_dat.S except for
204 the header portion. With "linux/icudtl_dat.S" in its place,
205 run scripts/make_mac_assembly.sh to generate it.
207 - android/icudtl_dat.S : Built on Linux with all the patches above and
208 android/brkitr.patch applied and android/patch_locale.sh executed.
209 '52' is dropped from the name generated in the build tree.
211 - android/icudtl.dat : Generated as icudt52l.dat in
212 {BUILD_DIR_ROOT}/data/out/tmp along with icudt52l_dat.S and
213 copied to the above location with '52' dropped in its name.
215 - windows/icudt.dll (by default, we set icu_use_icu_data_flag to 1
216 and don't use this file.)
218 a. check out a clean copy of icu52 from the upstream on Windows
219 outside the Chrome tree.
221 $ svn export --native-eol LF http://source.icu-project.org/repos/icu/icu/tags/release-52-1 ${SEPARATE_ICU_ROOT}/icu52
223 b. copy ${CHROME_ICU_ROOT}/source/data/in/icudtl.dat to
224 ${SEPARATE_ICU_ROOT}/source/data/in/icudt52l.dat
225 c. copy ${CHROME_ICU_ROOT}/source/data/makedata.mak to
226 ${SEPARATE_ICU_ROOT}/source/data/makedata.mak
227 c. In Visual Studio, open source/allinone/allinone.sln solution
228 in ${SEPARATE_ICU_ROOT}
229 d. Build 'makedata' target
230 e. icudt52.dll will be generated in ${SEPARATE_ICU_ROOT}/bin
231 f. Copy that icudt52.dll to ${CHROME_ICU_ROOT}/windows/icudt.dll
235 10. Change export of U_ICUDATA_ENTRY_POINT from U_IMPORT to U_EXPORT.
236 - patches/declspec.patch
238 11. Cherry-pick an upstream patch to fix a bug in bidi.
240 - upstream bug : http://bugs.icu-project.org/trac/ticket/11054
242 12. Apply the following patches for regex
243 - patches/regex.patch and patches/regex2.patch
244 - upstream bugs : http://bugs.icu-project.org/trac/ticket/11369
245 http://bugs.icu-project.org/trac/ticket/11370
246 http://bugs.icu-project.org/trac/ticket/11371